diff options
38 files changed, 314 insertions, 250 deletions
diff --git a/.github/config.yml b/.github/config.yml index 3fcf78b..ea6bf58 100644 --- a/.github/config.yml +++ b/.github/config.yml @@ -13,7 +13,3 @@ newPRWelcomeComment: > firstPRMergeComment: > 🎉 Congrats on getting your first pull request landed! <br><br>  - -# ProBot WIP (https://probot.github.io/apps/wip/) - -# (Requires no configuration) diff --git a/.github/lock.yml b/.github/lock.yml index 0f82605..5df3141 100644 --- a/.github/lock.yml +++ b/.github/lock.yml @@ -1,4 +1,4 @@ # ProBot Lock (https://probot.github.io/apps/lock/) -daysUntilLock: 90 +daysUntilLock: 365 lockComment: false diff --git a/.github/no-response.yml b/.github/no-response.yml index 714c1e1..7e320d2 100644 --- a/.github/no-response.yml +++ b/.github/no-response.yml @@ -1,6 +1,6 @@ # ProBot No Response (https://probot.github.io/apps/no-response/) -daysUntilClose: 7 +daysUntilClose: 14 responseRequiredLabel: 'need more info' closeComment: > This issue has been automatically closed because there was no response to a diff --git a/.github/stale.yml b/.github/stale.yml index df9115c..4de49ea 100644 --- a/.github/stale.yml +++ b/.github/stale.yml @@ -1,11 +1,14 @@ # ProBot Stale (https://probot.github.io/apps/stale/) daysUntilStale: 90 -daysUntilClose: 7 +daysUntilClose: 14 exemptLabels: - accepted + - blocked - bug - enhancement + - greenkeeper + - 'help wanted' - meta staleLabel: stale markComment: > @@ -133,6 +133,7 @@ - Kaylee (34007889+KayleePop@users.noreply.github.com) - Brad Marsden (silentbot1@gmail.com) - lovefoodcode (38153617+lovefoodcode@users.noreply.github.com) +- Gabriel Almeida (gabrieel@email.com) - filesfm (41144556+filesfm@users.noreply.github.com) - John Hiesey (john@hiesey.com) - KayleePop (34007889+KayleePop@users.noreply.github.com) @@ -140,5 +141,17 @@ - Chris McCormick (chris@mccormick.cx) - Jimmy Wärting (jimmy@warting.se) - Jorge Cuadra (jorgecuadrafueyo@gmail.com) +- Chocobozzz (florian.chocobo@gmail.com) +- Chocobozzz (me@florianbigard.com) +- Gabriel (gabrieel@email.com) +- Shachar Itzhaky (corwin.amber@gmail.com) +- Arnaldas Augutis (info@untitled.lt) +- Diego Rodriguez (diegorbaquero@gmail.com) +- Francois Carpentier (Francewhoa@users.noreply.github.com) +- greenkeeper[bot] (23040076+greenkeeper[bot]@users.noreply.github.com) +- Dan Dumont (ddumont@gmail.com) +- Eric Guan (guanzo91@gmail.com) +- Gabriel Juchault (gabriel.juchault@gmail.com) +- Feross (feross@feross.org) #### Generated by scripts/update-authors.sh. diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md deleted file mode 100644 index 7957636..0000000 --- a/CONTRIBUTING.md +++ /dev/null @@ -1,75 +0,0 @@ -# Contributing Guidelines - -Contributions welcome! - -**Before spending lots of time on something, ask for feedback on your idea first!** - -Please search issues and pull requests before adding something new to avoid duplicating -efforts and conversations. - -This project welcomes non-code contributions, too! The following types of contributions -are welcome: - -- **Ideas**: participate in an issue thread or start your own to have your voice heard. -- **Writing**: contribute your expertise in an area by helping expand the included docs. -- **Copy editing**: fix typos, clarify language, and improve the quality of the docs. -- **Formatting**: help keep docs easy to read with consistent formatting. - -## Code Style - -[![standard][standard-image]][standard-url] - -This repository uses [`standard`][standard-url] to maintain code style and consistency, -and to avoid style arguments. `npm test` runs `standard` automatically, so you don't have -to! - -[standard-image]: https://cdn.rawgit.com/feross/standard/master/badge.svg -[standard-url]: https://standardjs.com - -## Project Governance - -Individuals making significant and valuable contributions are given commit-access to the -project to contribute as they see fit. This project is more like an open wiki than a -standard guarded open source project. - -### Rules - -There are a few basic ground-rules for contributors: - -1. **No `--force` pushes** or modifying the Git history in any way. -2. **Non-master branches** should be used for ongoing work. -3. **Significant modifications** like API changes should be subject to a **pull request** - to solicit feedback from other contributors. -4. **Pull requests** are *encouraged* for all contributions to solicit feedback, but left to - the discretion of the contributor. - -### Releases - -Declaring formal releases remains the prerogative of the project maintainer. - -### Changes to this arrangement - -This is an experiment and feedback is welcome! This document may also be subject to pull- -requests or changes by contributors where you believe you have something valuable to add -or change. - -## Developer's Certificate of Origin 1.1 - -By making a contribution to this project, I certify that: - -- (a) The contribution was created in whole or in part by me and I have the right to - submit it under the open source license indicated in the file; or - -- (b) The contribution is based upon previous work that, to the best of my knowledge, is - covered under an appropriate open source license and I have the right under that license - to submit that work with modifications, whether created in whole or in part by me, under - the same open source license (unless I am permitted to submit under a different - license), as indicated in the file; or - -- (c) The contribution was provided directly to me by some other person who certified - (a), (b) or (c) and I have not modified it. - -- (d) I understand and agree that this project and the contribution are public and that a - record of the contribution (including all personal information I submit with it, - including my sign-off) is maintained indefinitely and may be redistributed consistent - with this project or the open source license(s) involved. @@ -10,7 +10,7 @@ <h4 align="center">The streaming torrent client. For node.js and the web.</h4> <p align="center"> - <a href="https://gitter.im/webtorrent/webtorrent"><img src="https://img.shields.io/badge/gitter-join%20chat%20%E2%86%92-brightgreen.svg" alt="gitter"></a> + <a href="https://discord.gg/cnXkm4Z"><img src="https://img.shields.io/discord/612575111718895616" alt="discord"></a> <a href="https://travis-ci.org/webtorrent/webtorrent"><img src="https://img.shields.io/travis/webtorrent/webtorrent/master.svg" alt="travis"></a> <a href="https://ci.appveyor.com/project/webtorrent/webtorrent"><img src="https://ci.appveyor.com/api/projects/status/cgu85xlgl72uoswq/branch/master?svg=true" alt="appveyor"></a> <a href="https://www.npmjs.com/package/webtorrent"><img src="https://img.shields.io/npm/v/webtorrent.svg" alt="npm version"></a> @@ -54,8 +54,8 @@ they can connect to both normal *and* web peers. We hope other clients will foll ### Open Source Sponsors -[<img src='https://webtorrent.io/img/supporters/popchest.png' width=300>](https://popchest.com) | [<img src='https://webtorrent.io/img/supporters/brave.png' width=300>](https://brave.com) -|---|---| +[<img src='https://webtorrent.io/img/supporters/brave.png' width=300>](https://brave.com) +|---| ### Features diff --git a/SECURITY.md b/SECURITY.md deleted file mode 100644 index fd097c3..0000000 --- a/SECURITY.md +++ /dev/null @@ -1,42 +0,0 @@ -# Security Policies and Procedures - -This document outlines security procedures and general policies for the WebTorrent -project. - - * [Reporting a Bug](#reporting-a-bug) - * [Disclosure Policy](#disclosure-policy) - * [Comments on this Policy](#comments-on-this-policy) - -## Reporting a Bug - -The WebTorrent team and community take all security bugs in WebTorrent seriously. -Thank you for improving the security of WebTorrent. We appreciate your efforts and -responsible disclosure and will make every effort to acknowledge your -contributions. - -Report security bugs by emailing the lead maintainer at feross@feross.org. - -The lead maintainer will acknowledge your email within 48 hours, and will send a -more detailed response within 48 hours indicating the next steps in handling -your report. After the initial reply to your report, the security team will -endeavor to keep you informed of the progress towards a fix and full -announcement, and may ask for additional information or guidance. - -Report security bugs in third-party modules to the person or team maintaining -the module. - -## Disclosure Policy - -When the security team receives a security bug report, they will assign it to a -primary handler. This person will coordinate the fix and release process, -involving the following steps: - - * Confirm the problem and determine the affected versions. - * Audit code to find any potential similar problems. - * Prepare fixes for all releases still under maintenance. These fixes will be - released as fast as possible to npm. - -## Comments on this Policy - -If you have suggestions on how this process could be improved please submit a -pull request. diff --git a/docs/api.md b/docs/api.md index 52d1125..843e5af 100644 --- a/docs/api.md +++ b/docs/api.md @@ -201,6 +201,10 @@ Aggregate "seed ratio" for all torrents (uploaded / downloaded). # Torrent API +## `torrent.name` + +Name of the torrent (string). + ## `torrent.infoHash` Info hash of the torrent (string). @@ -217,11 +221,28 @@ Magnet URI of the torrent (string). `.torrent` file of the torrent (Blob URL). +## `torrent.announce[...]` + +Array of all tracker servers. Each announce is an URL (string). + ## `torrent.files[...]` Array of all files in the torrent. See documentation for `File` below to learn what methods/properties files have. +## `torrent.pieces[...]` + +Array of all pieces in the torrent. See documentation for `Piece` below to learn what +properties pieces have. Some pieces can be null. + +## `torrent.pieceLength` + +Length in bytes of every piece but the last one. + +## `torrent.lastPieceLength` + +Length in bytes of the last piece (<= of `torrent.pieceLength`). + ## `torrent.timeRemaining` Time remaining for download to complete (in milliseconds). @@ -258,10 +279,45 @@ Torrent "seed ratio" (uploaded / downloaded). Number of peers in the torrent swarm. +## `torrent.maxWebConns` + +Max number of simultaneous connections per web seed, as passed in the options. + ## `torrent.path` Torrent download location. +## `torrent.ready` + +True when the torrent is ready to be used (i.e. metadata is available and store is +ready). + +## `torrent.paused` + +True when the torrent has stopped connecting to new peers. Note that this does +not pause new incoming connections, nor does it pause the streams of existing +connections or their wires. + +## `torrent.done` + +True when all the torrent files have been downloaded. + +## `torrent.length` + +Sum of the files length (in bytes). + +## `torrent.created` + +Date of creation of the torrent (as a [Date](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) object). + +## `torrent.createdBy` + +Author of the torrent (string). + +## `torrent.comment` + +A comment optionnaly set by the author (string). + ## `torrent.destroy([callback])` Alias for `client.remove(torrent)`. If `callback` is provided, it will be called when @@ -366,6 +422,14 @@ connections, nor does it pause the streams of existing connections or their wire Resume connecting to new peers. +## `torrent.rescanFiles([function callback (err) {}])` + +Verify the hashes of all pieces in the store and update the bitfield for any new valid +pieces. Useful if data has been added to the store outside WebTorrent, e.g. if another +process puts a valid file in the right place. Once the scan is complete, +`callback(null)` will be called (if provided), unless the torrent was destroyed during +the scan, in which case `callback` will be called with an error. + ## `torrent.on('infoHash', function () {})` Emitted when the info hash of the torrent has been determined. @@ -625,3 +689,13 @@ file.getBlobURL(function (err, url) { document.body.appendChild(a) }) ``` + +# Piece API + +## `piece.length` + +Piece length (in bytes). *Example: 12345* + +## `piece.missing` + +Piece missing length (in bytes). *Example: 100* diff --git a/docs/faq.md b/docs/faq.md index 3d9be9a..e32c1a1 100644 --- a/docs/faq.md +++ b/docs/faq.md @@ -111,6 +111,7 @@ WebTorrent is still pretty new, but it's already being used in cool ways: - **[Bugout][Bugout]** - build and run back-end web services in a browser tab. - **[P2P Media Loader][p2p-media-loader]** - engine for Hls.js and Shaka Player that enables P2P sharing of live and VOD streams over HLS or DASH protocols. - **[Cheff][Cheff]** - Share food recipes between your devices. [source code](https://github.com/vasco3/cheff) +- **[Hubzilla](https://hubzilla.org)** - WebTorrent player integration into posts ([source code](https://github.com/demitas-ace/wtplayer/tree/master/wtplayer)) - ***Your app here – [Send a pull request][pr] with your URL!*** #### WebTorrent Product Alternatives @@ -230,7 +231,7 @@ clients like Transmission, and uTorrent to add support for WebTorrent. **Vuze** ## How do I get started? To start using WebTorrent, simply include the -[`webtorrent.min.js`](https://cdn.jsdelivr.net/webtorrent/latest/webtorrent.min.js) +[`webtorrent.min.js`](https://cdn.jsdelivr.net/npm/webtorrent@latest/webtorrent.min.js) script on your page. If you use [browserify](http://browserify.org/), you can `npm install webtorrent` and `require('webtorrent')`. diff --git a/docs/get-started.md b/docs/get-started.md index 58529d6..362e8fe 100644 --- a/docs/get-started.md +++ b/docs/get-started.md @@ -6,7 +6,7 @@ to get started! ## Install To start using WebTorrent, simply include the -[`webtorrent.min.js`](https://cdn.jsdelivr.net/webtorrent/latest/webtorrent.min.js) +[`webtorrent.min.js`](https://cdn.jsdelivr.net/npm/webtorrent@latest/webtorrent.min.js) script on your page. ```html @@ -129,7 +129,7 @@ downloaded. <div class="log"></div> <!-- Include the latest version of WebTorrent --> - <script src="https://cdn.jsdelivr.net/webtorrent/latest/webtorrent.min.js"></script> + <script src="https://cdn.jsdelivr.net/npm/webtorrent@latest/webtorrent.min.js"></script> <script> var client = new WebTorrent() @@ -282,7 +282,7 @@ or [Instant.io](https://instant.io) to seed torrents to the WebTorrent network. </div> </div> <!-- Include the latest version of WebTorrent --> - <script src="https://cdn.jsdelivr.net/webtorrent/latest/webtorrent.min.js"></script> + <script src="https://cdn.jsdelivr.net/npm/webtorrent@latest/webtorrent.min.js"></script> <!-- Moment is used to show a human-readable remaining time --> <script src="http://momentjs.com/downloads/moment.min.js"></script> @@ -1,6 +1,5 @@ /* global FileList */ -const { Buffer } = require('safe-buffer') const { EventEmitter } = require('events') const concat = require('simple-concat') const createTorrent = require('create-torrent') @@ -153,6 +152,7 @@ class WebTorrent extends EventEmitter { } get downloadSpeed () { return this._downloadSpeed() } + get uploadSpeed () { return this._uploadSpeed() } get progress () { @@ -297,7 +297,7 @@ class WebTorrent extends EventEmitter { let streams if (isFileList(input)) input = Array.from(input) - else if (!Array.isArray(input)) input = [ input ] + else if (!Array.isArray(input)) input = [input] parallel(input.map(item => cb => { if (isReadable(item)) concat(item, cb) diff --git a/lib/file-stream.js b/lib/file-stream.js index 72622b2..f6a8402 100644 --- a/lib/file-stream.js +++ b/lib/file-stream.js @@ -56,9 +56,10 @@ class FileStream extends stream.Readable { this._torrent.store.get(p, (err, buffer) => { this._notifying = false if (this.destroyed) return - if (err) return this._destroy(err) debug('read %s (length %s) (err %s)', p, buffer.length, err && err.message) + if (err) return this._destroy(err) + if (this._offset) { buffer = buffer.slice(this._offset) this._offset = 0 diff --git a/lib/file.js b/lib/file.js index 8bcfe22..381ae5c 100644 --- a/lib/file.js +++ b/lib/file.js @@ -104,12 +104,20 @@ class File extends EventEmitter { getBlob (cb) { if (typeof window === 'undefined') throw new Error('browser-only method') - streamToBlob(this.createReadStream(), this._getMimeType(), cb) + streamToBlob(this.createReadStream(), this._getMimeType()) + .then( + blob => cb(null, blob), + err => cb(err) + ) } getBlobURL (cb) { if (typeof window === 'undefined') throw new Error('browser-only method') - streamToBlobURL(this.createReadStream(), this._getMimeType(), cb) + streamToBlobURL(this.createReadStream(), this._getMimeType()) + .then( + blobUrl => cb(null, blobUrl), + err => cb(err) + ) } appendTo (elem, opts, cb) { diff --git a/lib/rarity-map.js b/lib/rarity-map.js index 7630734..af712cc 100644 --- a/lib/rarity-map.js +++ b/lib/rarity-map.js @@ -45,7 +45,7 @@ class RarityMap { if (availability === min) { candidates.push(i) } else if (availability < min) { - candidates = [ i ] + candidates = [i] min = availability } } diff --git a/lib/server.js b/lib/server.js index 60595a8..0bbdafb 100644 --- a/lib/server.js +++ b/lib/server.js @@ -1,9 +1,9 @@ const arrayRemove = require('unordered-array-remove') +const escapeHtml = require('escape-html') const http = require('http') const mime = require('mime') const pump = require('pump') const rangeParser = require('range-parser') -const url = require('url') function Server (torrent, opts = {}) { const server = http.createServer() @@ -12,11 +12,17 @@ function Server (torrent, opts = {}) { const sockets = [] const pendingReady = [] let closed = false + const _listen = server.listen + const _close = server.close - server.on('connection', onConnection) - server.on('request', onRequest) + server.listen = (...args) => { + closed = false + server.on('connection', onConnection) + server.on('request', onRequest) + _listen.apply(server, args) + return server + } - const _close = server.close server.close = cb => { closed = true server.removeListener('connection', onConnection) @@ -25,7 +31,6 @@ function Server (torrent, opts = {}) { const onReady = pendingReady.pop() torrent.removeListener('ready', onReady) } - torrent = null _close.call(server, cb) } @@ -38,6 +43,7 @@ function Server (torrent, opts = {}) { if (!cb) cb = () => {} if (closed) process.nextTick(cb) else server.close(cb) + torrent = null } function isOriginAllowed (req) { @@ -48,13 +54,6 @@ function Server (torrent, opts = {}) { // deny them if (req.headers.origin == null) return false - // If a 'hostname' string is specified, deny requests with a 'Host' - // header that does not match the origin of the torrent server to prevent - // DNS rebinding attacks. - if (opts.hostname && req.headers.host !== `${opts.hostname}:${server.address().port}`) { - return false - } - // The user allowed all origins if (opts.origin === '*') return true @@ -71,12 +70,15 @@ function Server (torrent, opts = {}) { } function onRequest (req, res) { - const pathname = url.parse(req.url).pathname - - if (pathname === '/favicon.ico') { - return serve404Page() + // If a 'hostname' string is specified, deny requests with a 'Host' + // header that does not match the origin of the torrent server to prevent + // DNS rebinding attacks. + if (opts.hostname && req.headers.host !== `${opts.hostname}:${server.address().port}`) { + return req.destroy() } + const pathname = new URL(req.url, 'http://example.com').pathname + // Allow cross-origin requests (CORS) if (isOriginAllowed(req)) { res.setHeader('Access-Control-Allow-Origin', req.headers.origin) @@ -85,6 +87,13 @@ function Server (torrent, opts = {}) { // Prevent browser mime-type sniffing res.setHeader('X-Content-Type-Options', 'nosniff') + // Defense-in-depth: Set a strict Content Security Policy to mitigate XSS + res.setHeader('Content-Security-Policy', "base-uri 'none'; default-src 'none'; frame-ancestors 'none'; form-action 'none';") + + if (pathname === '/favicon.ico') { + return serve404Page() + } + // Allow CORS requests to specify arbitrary headers, e.g. 'Range', // by responding to the OPTIONS preflight request with the specified // origin and requested headers. @@ -142,11 +151,26 @@ function Server (torrent, opts = {}) { res.statusCode = 200 res.setHeader('Content-Type', 'text/html') - const listHtml = torrent.files.map((file, i) => `<li><a download="${file.name}" href="/${i}/${file.name}">${file.path}</a> (${file.length} bytes)</li>`).join('<br>') + const listHtml = torrent.files + .map((file, i) => ( + `<li> + <a + download="${escapeHtml(file.name)}" + href="${escapeHtml(i)}/${escapeHtml(file.name)}" + > + ${escapeHtml(file.path)} + </a> + (${escapeHtml(file.length)} bytes) + </li>` + )) + .join('<br>') const html = getPageHTML( - `${torrent.name} - WebTorrent`, - `<h1>${torrent.name}</h1><ol>${listHtml}</ol>` + `${escapeHtml(torrent.name)} - WebTorrent`, + ` + <h1>${escapeHtml(torrent.name)}</h1> + <ol>${listHtml}</ol> + ` ) res.end(html) } @@ -155,13 +179,16 @@ function Server (torrent, opts = {}) { res.statusCode = 404 res.setHeader('Content-Type', 'text/html') - const html = getPageHTML('404 - Not Found', '<h1>404 - Not Found</h1>') + const html = getPageHTML( + '404 - Not Found', + '<h1>404 - Not Found</h1>' + ) res.end(html) } function serveFile (file) { res.statusCode = 200 - res.setHeader('Content-Type', mime.getType(file.name)) + res.setHeader('Content-Type', mime.getType(file.name) || 'application/octet-stream') // Support range-requests res.setHeader('Accept-Ranges', 'bytes') @@ -209,7 +236,10 @@ function Server (torrent, opts = {}) { function serveMethodNotAllowed () { res.statusCode = 405 res.setHeader('Content-Type', 'text/html') - const html = getPageHTML('405 - Method Not Allowed', '<h1>405 - Method Not Allowed</h1>') + const html = getPageHTML( + '405 - Method Not Allowed', + '<h1>405 - Method Not Allowed</h1>' + ) res.end(html) } } @@ -217,8 +247,20 @@ function Server (torrent, opts = {}) { return server } +// NOTE: Arguments must already be HTML-escaped function getPageHTML (title, pageHtml) { - return `<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><title>${title}</title></head><body>${pageHtml}</body></html>` + return ` + <!DOCTYPE html> + <html lang="en"> + <head> + <meta charset="utf-8"> + <title>${title}</title> + </head> + <body> + ${pageHtml} + </body> + </html> + ` } // From https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent diff --git a/lib/torrent.js b/lib/torrent.js index f50c107..77cf898 100644 --- a/lib/torrent.js +++ b/lib/torrent.js @@ -1,4 +1,4 @@ -/* global URL, Blob */ +/* global Blob */ const addrToIPPort = require('addr-to-ip-port') const BitField = require('bitfield') @@ -46,7 +46,7 @@ const RECHOKE_OPTIMISTIC_DURATION = 2 // 30 seconds // IndexedDB chunk stores used in the browser benefit from maximum concurrency const FILESYSTEM_CONCURRENCY = process.browser ? Infinity : 2 -const RECONNECT_WAIT = [ 1000, 5000, 15000 ] +const RECONNECT_WAIT = [1000, 5000, 15000] const VERSION = require('../package.json').version const USER_AGENT = `WebTorrent/${VERSION} (https://webtorrent.io)` @@ -169,7 +169,7 @@ class Torrent extends EventEmitter { if (typeof window === 'undefined') throw new Error('browser-only property') if (!this.torrentFile) return null return URL.createObjectURL( - new Blob([ this.torrentFile ], { type: 'application/x-bittorrent' }) + new Blob([this.torrentFile], { type: 'application/x-bittorrent' }) ) } @@ -277,6 +277,19 @@ class Torrent extends EventEmitter { } _onListening () { + if (this.destroyed) return + + if (this.info) { + // if full metadata was included in initial torrent id, use it immediately. Otherwise, + // wait for torrent-discovery to find peers and ut_metadata to get the metadata. + this._onMetadata(this) + } else { + if (this.xs) this._getMetadataFromServer() + this._startDiscovery() + } + } + + _startDiscovery () { if (this.discovery || this.destroyed) return let trackerOpts = this.client.tracker @@ -334,21 +347,13 @@ class Torrent extends EventEmitter { this.discovery.on('warning', (err) => { this.emit('warning', err) }) - - if (this.info) { - // if full metadata was included in initial torrent id, use it immediately. Otherwise, - // wait for torrent-discovery to find peers and ut_metadata to get the metadata. - this._onMetadata(this) - } else if (this.xs) { - this._getMetadataFromServer() - } } _getMetadataFromServer () { // to allow function hoisting const self = this - const urls = Array.isArray(this.xs) ? this.xs : [ this.xs ] + const urls = Array.isArray(this.xs) ? this.xs : [this.xs] const tasks = urls.map(url => cb => { getMetadataFromURL(url, cb) @@ -500,11 +505,23 @@ class Torrent extends EventEmitter { this._onWireWithMetadata(wire) }) + // Emit 'metadata' before 'ready' and 'done' + this.emit('metadata') + + // User might destroy torrent in response to 'metadata' event + if (this.destroyed) return + if (this.skipVerify) { // Skip verifying exisitng data and just assume it's correct this._markAllVerified() this._onStore() } else { + const onPiecesVerified = (err) => { + if (err) return this._destroy(err) + this._debug('done verifying') + this._onStore() + } + this._debug('verifying existing torrent data') if (this._fileModtimes && this._store === FSChunkStore) { // don't verify if the files haven't been modified since we last checked @@ -517,15 +534,13 @@ class Torrent extends EventEmitter { this._markAllVerified() this._onStore() } else { - this._verifyPieces() + this._verifyPieces(onPiecesVerified) } }) } else { - this._verifyPieces() + this._verifyPieces(onPiecesVerified) } } - - this.emit('metadata') } /* @@ -547,8 +562,8 @@ class Torrent extends EventEmitter { }) } - _verifyPieces () { - parallelLimit(this.pieces.map((_, index) => cb => { + _verifyPieces (cb) { + parallelLimit(this.pieces.map((piece, index) => cb => { if (this.destroyed) return cb(new Error('torrent is destroyed')) this.store.get(index, (err, buf) => { @@ -559,7 +574,7 @@ class Torrent extends EventEmitter { if (this.destroyed) return cb(new Error('torrent is destroyed')) if (hash === this._hashes[index]) { - if (!this.pieces[index]) return + if (!this.pieces[index]) return cb(null) this._debug('piece verified %s', index) this._markVerified(index) } else { @@ -568,10 +583,21 @@ class Torrent extends EventEmitter { cb(null) }) }) - }), FILESYSTEM_CONCURRENCY, err => { - if (err) return this._destroy(err) - this._debug('done verifying') - this._onStore() + }), FILESYSTEM_CONCURRENCY, cb) + } + + rescanFiles (cb) { + if (this.destroyed) throw new Error('torrent is destroyed') + if (!cb) cb = noop + + this._verifyPieces((err) => { + if (err) { + this._destroy(err) + return cb(err) + } + + this._checkDone() + cb(null) }) } @@ -594,6 +620,9 @@ class Torrent extends EventEmitter { if (this.destroyed) return this._debug('on store') + // Start discovery before emitting 'ready' + this._startDiscovery() + this.ready = true this.emit('ready') @@ -820,7 +849,7 @@ class Torrent extends EventEmitter { if (this.destroyed) throw new Error('torrent is destroyed') if (start < 0 || end < start || this.pieces.length <= end) { - throw new Error('invalid selection ', start, ':', end) + throw new Error(`invalid selection ${start} : ${end}`) } priority = Number(priority) || 0 @@ -1564,7 +1593,7 @@ class Torrent extends EventEmitter { if (this.destroyed) throw new Error('torrent is destroyed') if (!this.ready) return this.once('ready', () => { this.load(streams, cb) }) - if (!Array.isArray(streams)) streams = [ streams ] + if (!Array.isArray(streams)) streams = [streams] if (!cb) cb = noop const readable = new MultiStream(streams) diff --git a/lib/webconn.js b/lib/webconn.js index 9c2b461..e99c04c 100644 --- a/lib/webconn.js +++ b/lib/webconn.js @@ -1,5 +1,4 @@ const BitField = require('bitfield') -const Buffer = require('safe-buffer').Buffer const debug = require('debug')('webtorrent:webconn') const get = require('simple-get') const sha1 = require('simple-sha1') diff --git a/package.json b/package.json index 1f452ed..eaea8b0 100644 --- a/package.json +++ b/package.json @@ -1,7 +1,7 @@ { "name": "webtorrent", "description": "Streaming torrent client", - "version": "0.103.1", + "version": "0.107.10", "author": { "name": "WebTorrent, LLC", "email": "feross@webtorrent.io", @@ -25,24 +25,34 @@ "bugs": { "url": "https://github.com/webtorrent/webtorrent/issues" }, + "chromeapp": { + "fs-chunk-store": "memory-chunk-store", + "http": "http-node", + "load-ip-set": false, + "net": "chrome-net", + "os": false + }, "dependencies": { "addr-to-ip-port": "^1.4.2", - "bitfield": "^2.0.0", + "bitfield": "^3.0.0", "bittorrent-dht": "^9.0.0", "bittorrent-protocol": "^3.0.0", - "chunk-store-stream": "^3.0.1", - "create-torrent": "^3.33.0", + "chrome-net": "^3.3.2", + "chunk-store-stream": "^4.0.0", + "create-torrent": "^4.0.0", "debug": "^4.1.0", "end-of-stream": "^1.1.0", - "fs-chunk-store": "^1.6.2", + "escape-html": "^1.0.3", + "fs-chunk-store": "^2.0.0", + "http-node": "github:feross/http-node#cddd2872f0020ecf5016f326cf5e58c965eef52a", "immediate-chunk-store": "^2.0.0", "load-ip-set": "^2.1.0", "memory-chunk-store": "^1.2.0", "mime": "^2.4.0", - "multistream": "^2.0.5", + "multistream": "^4.0.0", "package-json-versionify": "^1.0.2", "parse-numeric-range": "^0.0.2", - "parse-torrent": "^6.1.2", + "parse-torrent": "^7.0.0", "pump": "^3.0.0", "random-iterate": "^1.0.1", "randombytes": "^2.0.3", @@ -51,40 +61,38 @@ "render-media": "^3.0.0", "run-parallel": "^1.1.6", "run-parallel-limit": "^1.0.3", - "safe-buffer": "^5.0.1", "simple-concat": "^1.0.0", "simple-get": "^3.0.1", "simple-peer": "^9.0.0", - "simple-sha1": "^2.0.8", + "simple-sha1": "^3.0.0", "speedometer": "^1.0.0", - "stream-to-blob": "^1.0.0", - "stream-to-blob-url": "^2.1.0", + "stream-to-blob": "^2.0.0", + "stream-to-blob-url": "^3.0.0", "stream-with-known-length-to-buffer": "^1.0.0", "torrent-discovery": "^9.1.1", "torrent-piece": "^2.0.0", "uniq": "^1.0.1", "unordered-array-remove": "^1.0.2", "ut_metadata": "^3.3.0", - "ut_pex": "^1.1.1" + "ut_pex": "^2.0.0" }, "devDependencies": { - "airtap": "2.0.2", - "babel-minify": "^0.5.0", - "bittorrent-tracker": "^9.4.0", - "brfs": "^2.0.0", - "browserify": "^16.2.3", - "cross-spawn": "^6.0.3", - "electron": "^4.0.0", + "airtap": "^2.0.3", + "bittorrent-tracker": "^9.14.0", + "browserify": "^16.4.0", + "disc": "^1.3.3", + "electron": "^6.0.1", "finalhandler": "^1.0.0", "network-address": "^1.1.0", "run-series": "^1.1.4", "serve-static": "^1.11.1", "standard": "*", "tape": "^4.6.0", + "tinyify": "^2.5.1", "webtorrent-fixtures": "^1.5.0" }, "engines": { - "node": ">=4" + "node": ">=10" }, "homepage": "https://webtorrent.io", "keywords": [ @@ -110,9 +118,11 @@ "url": "git://github.com/webtorrent/webtorrent.git" }, "scripts": { - "build": "browserify -s WebTorrent -e ./ | minify > webtorrent.min.js", - "build-debug": "browserify -s WebTorrent -e ./ > webtorrent.debug.js", - "size": "npm run build && cat webtorrent.min.js | gzip | wc -c", + "build": "browserify --standalone WebTorrent --plugin tinyify . > webtorrent.min.js", + "build-debug": "browserify --standalone WebTorrent . > webtorrent.debug.js", + "size": "npm run size-js && npm run size-disc", + "size-disc": "browserify --plugin tinyify --full-paths . | discify --open", + "size-js": "npm run build && cat webtorrent.min.js | gzip | wc -c", "test": "standard && npm run test-node && npm run test-browser", "test-browser": "airtap -- test/*.js test/browser/*.js", "test-browser-local": "airtap --local -- test/*.js test/browser/*.js", diff --git a/test/browser/basic.js b/test/browser/basic.js index 7bc488e..a70f530 100644 --- a/test/browser/basic.js +++ b/test/browser/basic.js @@ -1,4 +1,3 @@ -var Buffer = require('safe-buffer').Buffer var test = require('tape') var WebTorrent = require('../../') diff --git a/test/client-add-duplicate-trackers.js b/test/client-add-duplicate-trackers.js index 161e920..3c9c366 100644 --- a/test/client-add-duplicate-trackers.js +++ b/test/client-add-duplicate-trackers.js @@ -11,7 +11,7 @@ test('client.add: duplicate trackers', function (t) { client.on('warning', function (err) { t.fail(err) }) var torrent = client.add(fixtures.leaves.torrent, { - announce: [ 'wss://example.com', 'wss://example.com', 'wss://example.com' ] + announce: ['wss://example.com', 'wss://example.com', 'wss://example.com'] }) torrent.on('ready', function () { @@ -26,7 +26,7 @@ test('client.add: duplicate trackers, with multiple torrents', function (t) { // Re-use this object, in case webtorrent is changing it var opts = { - announce: [ 'wss://example.com', 'wss://example.com', 'wss://example.com' ] + announce: ['wss://example.com', 'wss://example.com', 'wss://example.com'] } var client = new WebTorrent({ dht: false, tracker: false }) @@ -56,15 +56,15 @@ test('client.add: duplicate trackers (including in .torrent file), multiple torr // Re-use this object, in case webtorrent is changing it var opts = { - announce: [ 'wss://example.com', 'wss://example.com', 'wss://example.com' ] + announce: ['wss://example.com', 'wss://example.com', 'wss://example.com'] } // Include the duplicate trackers in the .torrent files var parsedTorrentLeaves = Object.assign({}, fixtures.leaves.parsedTorrent) - parsedTorrentLeaves.announce = [ 'wss://example.com', 'wss://example.com', 'wss://example.com' ] + parsedTorrentLeaves.announce = ['wss://example.com', 'wss://example.com', 'wss://example.com'] var parsedTorrentAlice = Object.assign({}, fixtures.alice.parsedTorrent) - parsedTorrentAlice.announce = [ 'wss://example.com', 'wss://example.com', 'wss://example.com' ] + parsedTorrentAlice.announce = ['wss://example.com', 'wss://example.com', 'wss://example.com'] var client = new WebTorrent({ dht: false, tracker: false }) diff --git a/test/client-add.js b/test/client-add.js index 009cdc6..07de490 100644 --- a/test/client-add.js +++ b/test/client-add.js @@ -1,4 +1,3 @@ -var Buffer = require('safe-buffer').Buffer var fixtures = require('webtorrent-fixtures') var test = require('tape') var WebTorrent = require('../') @@ -135,7 +134,7 @@ test('client.add: parsed torrent, with string type announce property', function t.equal(torrent.magnetURI, expectedMagnetURI) // `torrent.announce` must always be an array - t.deepEqual(torrent.announce, [ 'http://tracker.local:80' ]) + t.deepEqual(torrent.announce, ['http://tracker.local:80']) client.remove(fixtures.leaves.parsedTorrent, function (err) { t.error(err, 'torrent destroyed') }) t.equal(client.torrents.length, 0) @@ -153,7 +152,7 @@ test('client.add: parsed torrent, with array type announce property', function ( client.on('warning', function (err) { t.fail(err) }) var parsedTorrent = Object.assign({}, fixtures.leaves.parsedTorrent) - parsedTorrent.announce = [ 'http://tracker.local:80', 'http://tracker.local:81' ] + parsedTorrent.announce = ['http://tracker.local:80', 'http://tracker.local:81'] var torrent = client.add(parsedTorrent) t.equal(client.torrents.length, 1) @@ -166,7 +165,7 @@ test('client.add: parsed torrent, with array type announce property', function ( '&tr=' + encodeURIComponent('http://tracker.local:81') t.equal(torrent.magnetURI, expectedMagnetURI) - t.deepEqual(torrent.announce, [ 'http://tracker.local:80', 'http://tracker.local:81' ]) + t.deepEqual(torrent.announce, ['http://tracker.local:80', 'http://tracker.local:81']) client.remove(fixtures.leaves.parsedTorrent, function (err) { t.error(err, 'torrent destroyed') }) t.equal(client.torrents.length, 0) diff --git a/test/client-destroy.js b/test/client-destroy.js index 956c966..43992a1 100644 --- a/test/client-destroy.js +++ b/test/client-destroy.js @@ -1,4 +1,3 @@ -var Buffer = require('safe-buffer').Buffer var fixtures = require('webtorrent-fixtures') var test = require('tape') var WebTorrent = require('../') diff --git a/test/client-seed.js b/test/client-seed.js index 48d958d..a50d3cf 100644 --- a/test/client-seed.js +++ b/test/client-seed.js @@ -1,6 +1,5 @@ /* global Blob */ -var Buffer = require('safe-buffer').Buffer var fixtures = require('webtorrent-fixtures') var test = require('tape') var WebTorrent = require('../') @@ -61,7 +60,7 @@ test('client.seed: torrent file (Blob)', function (t) { client.on('error', function (err) { t.fail(err) }) client.on('warning', function (err) { t.fail(err) }) - client.seed(new Blob([ fixtures.leaves.content ]), { + client.seed(new Blob([fixtures.leaves.content]), { name: 'Leaves of Grass by Walt Whitman.epub', announce: [] }, function (torrent) { diff --git a/test/common.js b/test/common.js new file mode 100644 index 0000000..6f2ce1e --- /dev/null +++ b/test/common.js @@ -0,0 +1,13 @@ +const os = require('os') +const fs = require('fs') +const path = require('path') + +exports.getDownloadPath = function (infix, infoHash) { + let tmpPath + try { + tmpPath = path.join(fs.statSync('/tmp') && '/tmp') + } catch (err) { + tmpPath = path.join(typeof os.tmpdir === 'function' ? os.tmpdir() : '/') + } + return path.join(tmpPath, 'webtorrent', 'test', infix, infoHash) +} diff --git a/test/node/blocklist-dht.js b/test/node/blocklist-dht.js index 3e23424..fa3915a 100644 --- a/test/node/blocklist-dht.js +++ b/test/node/blocklist-dht.js @@ -3,6 +3,7 @@ var fixtures = require('webtorrent-fixtures') var series = require('run-series') var test = require('tape') var WebTorrent = require('../../') +var common = require('../common') test('blocklist blocks peers discovered via DHT', function (t) { t.plan(8) @@ -25,7 +26,9 @@ test('blocklist blocks peers discovered via DHT', function (t) { client1.on('error', function (err) { t.fail(err) }) client1.on('warning', function (err) { t.fail(err) }) - var torrent1 = client1.add(fixtures.leaves.parsedTorrent) + var torrent1 = client1.add(fixtures.leaves.parsedTorrent, { + path: common.getDownloadPath('client_1', fixtures.leaves.parsedTorrent.infoHash) + }) torrent1.on('peer', function () { t.fail('client1 should not find any peers') @@ -58,12 +61,14 @@ test('blocklist blocks peers discovered via DHT', function (t) { client2 = new WebTorrent({ tracker: false, dht: { bootstrap: '127.0.0.1:' + dhtServer.address().port }, - blocklist: [ '127.0.0.1' ] + blocklist: ['127.0.0.1'] }) client2.on('error', function (err) { t.fail(err) }) client2.on('warning', function (err) { t.fail(err) }) - var torrent2 = client2.add(fixtures.leaves.parsedTorrent) + var torrent2 = client2.add(fixtures.leaves.parsedTorrent, { + path: common.getDownloadPath('client_2', fixtures.leaves.parsedTorrent.infoHash) + }) torrent2.on('blockedPeer', function (addr) { t.pass('client2 blocked connection to client1: ' + addr) diff --git a/test/node/blocklist-tracker.js b/test/node/blocklist-tracker.js index 7c92e9a..e877d24 100644 --- a/test/node/blocklist-tracker.js +++ b/test/node/blocklist-tracker.js @@ -3,6 +3,7 @@ var series = require('run-series') var test = require('tape') var TrackerServer = require('bittorrent-tracker/server') var WebTorrent = require('../../') +var common = require('../common') test('blocklist blocks peers discovered via tracker', function (t) { t.plan(9) @@ -38,7 +39,9 @@ test('blocklist blocks peers discovered via tracker', function (t) { client1.on('error', function (err) { t.fail(err) }) client1.on('warning', function (err) { t.fail(err) }) - var torrent1 = client1.add(parsedTorrent) + var torrent1 = client1.add(parsedTorrent, { + path: common.getDownloadPath('client_1', parsedTorrent.infoHash) + }) torrent1.on('invalidPeer', function () { t.pass('client1 found itself') @@ -53,12 +56,14 @@ test('blocklist blocks peers discovered via tracker', function (t) { function (cb) { client2 = new WebTorrent({ dht: false, - blocklist: [ '127.0.0.1' ] + blocklist: ['127.0.0.1'] }) client2.on('error', function (err) { t.fail(err) }) client2.on('warning', function (err) { t.fail(err) }) - var torrent2 = client2.add(parsedTorrent) + var torrent2 = client2.add(parsedTorrent, { + path: common.getDownloadPath('client_2', parsedTorrent.infoHash) + }) torrent2.once('blockedPeer', function () { t.pass('client2 blocked first peer') diff --git a/test/node/blocklist.js b/test/node/blocklist.js index f39b232..87c131f 100644 --- a/test/node/blocklist.js +++ b/test/node/blocklist.js @@ -25,7 +25,7 @@ test('blocklist (single IP)', function (t) { var client = new WebTorrent({ dht: false, tracker: false, - blocklist: [ '1.2.3.4' ] + blocklist: ['1.2.3.4'] }) client.on('error', function (err) { t.fail(err) }) client.on('warning', function (err) { t.fail(err) }) @@ -51,7 +51,7 @@ test('blocklist (array of IPs)', function (t) { var client = new WebTorrent({ dht: false, tracker: false, - blocklist: [ '1.2.3.4', '5.6.7.8' ] + blocklist: ['1.2.3.4', '5.6.7.8'] }) .on('error', function (err) { t.fail(err) }) .on('warning', function (err) { t.fail(err) }) diff --git a/test/node/download-dht-magnet.js b/test/node/download-dht-magnet.js index aeb580a..3372317 100644 --- a/test/node/download-dht-magnet.js +++ b/test/node/download-dht-magnet.js @@ -47,7 +47,7 @@ test('Download using DHT (via magnet uri)', function (t) { // torrent metadata has been fetched -- sanity check it t.equal(torrent.name, 'Leaves of Grass by Walt Whitman.epub') - var names = [ 'Leaves of Grass by Walt Whitman.epub' ] + var names = ['Leaves of Grass by Walt Whitman.epub'] t.deepEqual(torrent.files.map(function (file) { return file.name }), names) }) diff --git a/test/node/download-dht-torrent.js b/test/node/download-dht-torrent.js index b9fc932..9d5a93b 100644 --- a/test/node/download-dht-torrent.js +++ b/test/node/download-dht-torrent.js @@ -40,7 +40,7 @@ test('Download using DHT (via .torrent file)', function (t) { // torrent metadata has been fetched -- sanity check it t.equal(torrent.name, 'Leaves of Grass by Walt Whitman.epub') - var names = [ 'Leaves of Grass by Walt Whitman.epub' ] + var names = ['Leaves of Grass by Walt Whitman.epub'] t.deepEqual(torrent.files.map(function (file) { return file.name }), names) }) diff --git a/test/node/download-tracker-magnet.js b/test/node/download-tracker-magnet.js index de56007..e597191 100644 --- a/test/node/download-tracker-magnet.js +++ b/test/node/download-tracker-magnet.js @@ -43,7 +43,7 @@ function magnetDownloadTest (t, serverType) { ? 'http://127.0.0.1:' + port + '/announce' : 'udp://127.0.0.1:' + port - parsedTorrent.announce = [ announceUrl ] + parsedTorrent.announce = [announceUrl] magnetURI = 'magnet:?xt=urn:btih:' + parsedTorrent.infoHash + '&tr=' + encodeURIComponent(announceUrl) client1 = new WebTorrent({ dht: false }) diff --git a/test/node/download-tracker-torrent.js b/test/node/download-tracker-torrent.js index f1a04a9..17f9a0b 100644 --- a/test/node/download-tracker-torrent.js +++ b/test/node/download-tracker-torrent.js @@ -50,7 +50,7 @@ function torrentDownloadTest (t, serverType) { : 'udp://127.0.0.1:' + port // Overwrite announce with our local tracker - parsedTorrent.announce = [ announceUrl ] + parsedTorrent.announce = [announceUrl] client1.on('torrent', function (torrent) { // torrent metadata has been fetched -- sanity check it diff --git a/test/node/seed-stream.js b/test/node/seed-stream.js index eafc9e7..e56964e 100644 --- a/test/node/seed-stream.js +++ b/test/node/seed-stream.js @@ -36,7 +36,7 @@ test('client.seed: stream', function (t) { var seederOpts = { name: 'hello.txt', pieceLength: 5, - announce: [ announceUrl ] + announce: [announceUrl] } seeder.seed([stream], seederOpts, function (torrent) { magnetURI = torrent.magnetURI diff --git a/test/node/swarm-basic.js b/test/node/swarm-basic.js index 3061f8d..d7d4f18 100644 --- a/test/node/swarm-basic.js +++ b/test/node/swarm-basic.js @@ -1,4 +1,3 @@ -// var Buffer = require('safe-buffer').Buffer // var randombytes = require('randombytes') // var Swarm = require('../../lib/swarm') // var test = require('tape') diff --git a/test/node/swarm-reconnect.js b/test/node/swarm-reconnect.js index cd18d1d..591798f 100644 --- a/test/node/swarm-reconnect.js +++ b/test/node/swarm-reconnect.js @@ -1,4 +1,3 @@ -// var Buffer = require('safe-buffer').Buffer // var randombytes = require('randombytes') // var Swarm = require('../../lib/swarm') // var test = require('tape') diff --git a/test/node/swarm-timeout.js b/test/node/swarm-timeout.js index ceac357..61eeeb0 100644 --- a/test/node/swarm-timeout.js +++ b/test/node/swarm-timeout.js @@ -1,4 +1,3 @@ -// var Buffer = require('safe-buffer').Buffer // var randombytes = require('randombytes') // var Swarm = require('../../lib/swarm') // var test = require('tape') diff --git a/test/swarm.js b/test/swarm.js index 1869b87..05b89a1 100644 --- a/test/swarm.js +++ b/test/swarm.js @@ -1,4 +1,3 @@ -// var Buffer = require('safe-buffer').Buffer // var randombytes = require('randombytes') // var Swarm = require('../lib/swarm') // var test = require('tape') diff --git a/webtorrent.min.js b/webtorrent.min.js index 6cf30dd..bc72c45 100644 --- a/webtorrent.min.js +++ b/webtorrent.min.js @@ -1,11 +1 @@ -(function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var t;t="undefined"==typeof window?"undefined"==typeof global?"undefined"==typeof self?this:self:global:window,t.WebTorrent=e()}})(function(){var t=Math.pow,n=Math.floor,r=Math.abs,o=String.fromCharCode,a=Math.ceil,s=Math.max,d=Math.min,l;return function(){function s(d,e,n){function t(o,i){if(!e[o]){if(!d[o]){var l="function"==typeof require&&require;if(!i&&l)return l(o,!0);if(r)return r(o,!0);var c=new Error("Cannot find module '"+o+"'");throw c.code="MODULE_NOT_FOUND",c}var a=e[o]={exports:{}};d[o][0].call(a.exports,function(e){var r=d[o][1][e];return t(r||e)},a,a.exports,s,d,e,n)}return e[o].exports}for(var r="function"==typeof require&&require,o=0;o<n.length;o++)t(n[o]);return t}return s}()({1:[function(e,t){const n=e("debug")("webtorrent:file-stream"),r=e("readable-stream");class o extends r.Readable{constructor(e,t){super(t),this.destroyed=!1,this._torrent=e._torrent;const n=t&&t.start||0,r=t&&t.end&&t.end<e.length?t.end:e.length-1,o=e._torrent.pieceLength;this._startPiece=0|(n+e.offset)/o,this._endPiece=0|(r+e.offset)/o,this._piece=this._startPiece,this._offset=n+e.offset-this._startPiece*o,this._missing=r-n+1,this._reading=!1,this._notifying=!1,this._criticalLength=d(0|1048576/o,2)}_read(){this._reading||(this._reading=!0,this._notify())}_notify(){if(!this._reading||0===this._missing)return;if(!this._torrent.bitfield.get(this._piece))return this._torrent.critical(this._piece,this._piece+this._criticalLength);if(this._notifying)return;if(this._notifying=!0,this._torrent.destroyed)return this._destroy(new Error("Torrent removed"));const e=this._piece;this._torrent.store.get(e,(t,r)=>(this._notifying=!1,this.destroyed?void 0:t?this._destroy(t):void(n("read %s (length %s) (err %s)",e,r.length,t&&t.message),this._offset&&(r=r.slice(this._offset),this._offset=0),this._missing<r.length&&(r=r.slice(0,this._missing)),this._missing-=r.length,n("pushing buffer of length %s",r.length),this._reading=!1,this.push(r),0===this._missing&&this.push(null)))),this._piece+=1}destroy(e){this._destroy(null,e)}_destroy(e,t){this.destroyed||(this.destroyed=!0,!this._torrent.destroyed&&this._torrent.deselect(this._startPiece,this._endPiece,!0),e&&this.emit("error",e),this.emit("close"),t&&t())}}t.exports=o},{debug:69,"readable-stream":168}],2:[function(e,t){(function(n){const{EventEmitter:r}=e("events"),{PassThrough:o}=e("readable-stream"),i=e("end-of-stream"),a=e("path"),l=e("render-media"),c=e("stream-to-blob"),u=e("stream-to-blob-url"),p=e("stream-with-known-length-to-buffer"),f=e("./file-stream");class h extends r{constructor(e,t){super(),this._torrent=e,this._destroyed=!1,this.name=t.name,this.path=t.path,this.length=t.length,this.offset=t.offset,this.done=!1;const n=t.offset,r=n+t.length-1;this._startPiece=0|n/this._torrent.pieceLength,this._endPiece=0|r/this._torrent.pieceLength,0===this.length&&(this.done=!0,this.emit("done"))}get downloaded(){if(!this._torrent.bitfield)return 0;const{pieces:e,bitfield:t,pieceLength:n}=this._torrent,{_startPiece:r,_endPiece:o}=this,i=e[r];let a=t.get(r)?n-this.offset%n:s(i.length-i.missing-this.offset,0);for(let i=r+1;i<=o;++i)if(t.get(i))a+=n;else{const t=e[i];a+=t.length-t.missing}return d(a,this.length)}get progress(){return this.length?this.downloaded/this.length:0}select(e){0===this.length||this._torrent.select(this._startPiece,this._endPiece,e)}deselect(){0===this.length||this._torrent.deselect(this._startPiece,this._endPiece,!1)}createReadStream(e){if(0===this.length){const e=new o;return n.nextTick(()=>{e.end()}),e}const t=new f(this,e);return this._torrent.select(t._startPiece,t._endPiece,!0,()=>{t._notify()}),i(t,()=>{this._destroyed||!this._torrent.destroyed&&this._torrent.deselect(t._startPiece,t._endPiece,!0)}),t}getBuffer(e){p(this.createReadStream(),this.length,e)}getBlob(e){if("undefined"==typeof window)throw new Error("browser-only method");c(this.createReadStream(),this._getMimeType(),e)}getBlobURL(e){if("undefined"==typeof window)throw new Error("browser-only method");u(this.createReadStream(),this._getMimeType(),e)}appendTo(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");l.append(this,e,t,n)}renderTo(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");l.render(this,e,t,n)}_getMimeType(){return l.mime[a.extname(this.name).toLowerCase()]}_destroy(){this._destroyed=!0,this._torrent=null}}t.exports=h}).call(this,e("_process"))},{"./file-stream":1,_process:138,"end-of-stream":72,events:48,path:135,"readable-stream":168,"render-media":169,"stream-to-blob":222,"stream-to-blob-url":221,"stream-with-known-length-to-buffer":223}],3:[function(e,t,n){const r=e("unordered-array-remove"),o=e("debug")("webtorrent:peer"),i=e("bittorrent-protocol"),a=e("./webconn");n.createWebRTCPeer=(e,t)=>{const n=new s(e.id,"webrtc");return n.conn=e,n.swarm=t,n.conn.connected?n.onConnect():(n.conn.once("connect",()=>{n.onConnect()}),n.conn.once("error",e=>{n.destroy(e)}),n.startConnectTimeout()),n},n.createTCPIncomingPeer=e=>{const t=`${e.remoteAddress}:${e.remotePort}`,n=new s(t,"tcpIncoming");return n.conn=e,n.addr=t,n.onConnect(),n},n.createTCPOutgoingPeer=(e,t)=>{const n=new s(e,"tcpOutgoing");return n.addr=e,n.swarm=t,n},n.createWebSeedPeer=(e,t)=>{const n=new s(e,"webSeed");return n.swarm=t,n.conn=new a(e,t),n.onConnect(),n};class s{constructor(e,t){this.id=e,this.type=t,o("new %s Peer %s",t,e),this.addr=null,this.conn=null,this.swarm=null,this.wire=null,this.connected=!1,this.destroyed=!1,this.timeout=null,this.retries=0,this.sentHandshake=!1}onConnect(){if(!this.destroyed){this.connected=!0,o("Peer %s connected",this.id),clearTimeout(this.connectTimeout);const e=this.conn;e.once("end",()=>{this.destroy()}),e.once("close",()=>{this.destroy()}),e.once("finish",()=>{this.destroy()}),e.once("error",e=>{this.destroy(e)});const t=this.wire=new i;t.type=this.type,t.once("end",()=>{this.destroy()}),t.once("close",()=>{this.destroy()}),t.once("finish",()=>{this.destroy()}),t.once("error",e=>{this.destroy(e)}),t.once("handshake",(e,t)=>{this.onHandshake(e,t)}),this.startHandshakeTimeout(),e.pipe(t).pipe(e),this.swarm&&!this.sentHandshake&&this.handshake()}}onHandshake(e,t){if(!this.swarm)return;if(this.destroyed)return;if(this.swarm.destroyed)return this.destroy(new Error("swarm already destroyed"));if(e!==this.swarm.infoHash)return this.destroy(new Error("unexpected handshake info hash for this swarm"));if(t===this.swarm.peerId)return this.destroy(new Error("refusing to connect to ourselves"));o("Peer %s got handshake %s",this.id,e),clearTimeout(this.handshakeTimeout),this.retries=0;let n=this.addr;!n&&this.conn.remoteAddress&&this.conn.remotePort&&(n=`${this.conn.remoteAddress}:${this.conn.remotePort}`),this.swarm._onWire(this.wire,n);this.swarm&&!this.swarm.destroyed&&(this.sentHandshake||this.handshake())}handshake(){const e={dht:!this.swarm.private&&!!this.swarm.client.dht};this.wire.handshake(this.swarm.infoHash,this.swarm.client.peerId,e),this.sentHandshake=!0}startConnectTimeout(){clearTimeout(this.connectTimeout),this.connectTimeout=setTimeout(()=>{this.destroy(new Error("connect timeout"))},"webrtc"===this.type?25e3:5e3),this.connectTimeout.unref&&this.connectTimeout.unref()}startHandshakeTimeout(){clearTimeout(this.handshakeTimeout),this.handshakeTimeout=setTimeout(()=>{this.destroy(new Error("handshake timeout"))},25e3),this.handshakeTimeout.unref&&this.handshakeTimeout.unref()}destroy(e){if(this.destroyed)return;this.destroyed=!0,this.connected=!1,o("destroy %s (error: %s)",this.id,e&&(e.message||e)),clearTimeout(this.connectTimeout),clearTimeout(this.handshakeTimeout);const t=this.swarm,n=this.conn,i=this.wire;this.swarm=null,this.conn=null,this.wire=null,t&&i&&r(t.wires,t.wires.indexOf(i)),n&&(n.on("error",()=>{}),n.destroy()),i&&i.destroy(),t&&t.removePeer(this.id)}}},{"./webconn":6,"bittorrent-protocol":14,debug:69,"unordered-array-remove":237}],4:[function(e,t){t.exports=class{constructor(e){this._torrent=e,this._numPieces=e.pieces.length,this._pieces=Array(this._numPieces),this._onWire=e=>{this.recalculate(),this._initWire(e)},this._onWireHave=e=>{this._pieces[e]+=1},this._onWireBitfield=()=>{this.recalculate()},this._torrent.wires.forEach(e=>{this._initWire(e)}),this._torrent.on("wire",this._onWire),this.recalculate()}getRarestPiece(e){let t=[],n=1/0;for(let r=0;r<this._numPieces;++r){if(e&&!e(r))continue;const o=this._pieces[r];o===n?t.push(r):o<n&&(t=[r],n=o)}return t.length?t[0|Math.random()*t.length]:-1}destroy(){this._torrent.removeListener("wire",this._onWire),this._torrent.wires.forEach(e=>{this._cleanupWireEvents(e)}),this._torrent=null,this._pieces=null,this._onWire=null,this._onWireHave=null,this._onWireBitfield=null}_initWire(e){e._onClose=()=>{this._cleanupWireEvents(e);for(let t=0;t<this._numPieces;++t)this._pieces[t]-=e.peerPieces.get(t)},e.on("have",this._onWireHave),e.on("bitfield",this._onWireBitfield),e.once("close",e._onClose)}recalculate(){this._pieces.fill(0);for(const e of this._torrent.wires)for(let t=0;t<this._numPieces;++t)this._pieces[t]+=e.peerPieces.get(t)}_cleanupWireEvents(e){e.removeListener("have",this._onWireHave),e.removeListener("bitfield",this._onWireBitfield),e._onClose&&e.removeListener("close",e._onClose),e._onClose=null}}},{}],5:[function(e,t){(function(n,r){function o(e,t){return 2+a(t*e.downloadSpeed()/I.BLOCK_LENGTH)}function l(e,t,n){return 1+a(t*e.downloadSpeed()/n)}function c(e){return 0|Math.random()*e}function u(){}const p=e("addr-to-ip-port"),f=e("bitfield"),h=e("chunk-store-stream/write"),m=e("debug")("webtorrent:torrent"),g=e("torrent-discovery"),_=e("events").EventEmitter,b=e("fs"),i=e("fs-chunk-store"),y=e("simple-get"),w=e("immediate-chunk-store"),k=e("multistream"),x=e("net"),C=e("os"),S=e("run-parallel"),v=e("run-parallel-limit"),E=e("parse-torrent"),L=e("path"),I=e("torrent-piece"),B=e("pump"),T=e("random-iterate"),R=e("simple-sha1"),A=e("speedometer"),U=e("uniq"),P=e("ut_metadata"),M=e("ut_pex"),O=e("parse-numeric-range"),j=e("./file"),N=e("./peer"),F=e("./rarity-map"),H=e("./server"),q=5e3,D=3*I.BLOCK_LENGTH,W=1,z=n.browser?1/0:2,V=[1e3,5e3,15e3],G=e("../package.json").version,K=`WebTorrent/${G} (https://webtorrent.io)`;let Y;try{Y=L.join(b.statSync("/tmp")&&"/tmp","webtorrent")}catch(e){Y=L.join("function"==typeof C.tmpdir?C.tmpdir():"/","webtorrent")}class X extends _{constructor(e,t,n){super(),this._debugId="unknown infohash",this.client=t,this.announce=n.announce,this.urlList=n.urlList,this.path=n.path,this.skipVerify=!!n.skipVerify,this._store=n.store||i,this._getAnnounceOpts=n.getAnnounceOpts,this.strategy=n.strategy||"sequential",this.maxWebConns=n.maxWebConns||4,this._rechokeNumSlots=!1===n.uploads||0===n.uploads?0:+n.uploads||10,this._rechokeOptimisticWire=null,this._rechokeOptimisticTime=0,this._rechokeIntervalId=null,this.ready=!1,this.destroyed=!1,this.paused=!1,this.done=!1,this.metadata=null,this.store=null,this.files=[],this.pieces=[],this._amInterested=!1,this._selections=[],this._critical=[],this.wires=[],this._queue=[],this._peers={},this._peersLength=0,this.received=0,this.uploaded=0,this._downloadSpeed=A(),this._uploadSpeed=A(),this._servers=[],this._xsRequests=[],this._fileModtimes=n.fileModtimes,null!==e&&this._onTorrentId(e),this._debug("new torrent")}get timeRemaining(){return this.done?0:0===this.downloadSpeed?1/0:1e3*((this.length-this.downloaded)/this.downloadSpeed)}get downloaded(){if(!this.bitfield)return 0;let e=0;for(let t=0,n=this.pieces.length;t<n;++t)if(this.bitfield.get(t))e+=t==n-1?this.lastPieceLength:this.pieceLength;else{const n=this.pieces[t];e+=n.length-n.missing}return e}get downloadSpeed(){return this._downloadSpeed()}get uploadSpeed(){return this._uploadSpeed()}get progress(){return this.length?this.downloaded/this.length:0}get ratio(){return this.uploaded/(this.received||1)}get numPeers(){return this.wires.length}get torrentFileBlobURL(){if("undefined"==typeof window)throw new Error("browser-only property");return this.torrentFile?URL.createObjectURL(new Blob([this.torrentFile],{type:"application/x-bittorrent"})):null}get _numQueued(){return this._queue.length+(this._peersLength-this._numConns)}get _numConns(){let e=0;for(const t in this._peers)this._peers[t].connected&&(e+=1);return e}get swarm(){return console.warn("WebTorrent: `torrent.swarm` is deprecated. Use `torrent` directly instead."),this}_onTorrentId(e){if(this.destroyed)return;let t;try{t=E(e)}catch(e){}t?(this.infoHash=t.infoHash,this._debugId=t.infoHash.toString("hex").substring(0,7),n.nextTick(()=>{this.destroyed||this._onParsedTorrent(t)})):E.remote(e,(e,t)=>this.destroyed?void 0:e?this._destroy(e):void this._onParsedTorrent(t))}_onParsedTorrent(e){if(!this.destroyed){if(this._processParsedTorrent(e),!this.infoHash)return this._destroy(new Error("Malformed torrent data: No info hash"));(this.path||(this.path=L.join(Y,this.infoHash)),this._rechokeIntervalId=setInterval(()=>{this._rechoke()},1e4),this._rechokeIntervalId.unref&&this._rechokeIntervalId.unref(),this.emit("_infoHash",this.infoHash),!this.destroyed)&&(this.emit("infoHash",this.infoHash),this.destroyed||(this.client.listening?this._onListening():this.client.once("listening",()=>{this._onListening()})))}}_processParsedTorrent(e){this._debugId=e.infoHash.toString("hex").substring(0,7),this.announce&&(e.announce=e.announce.concat(this.announce)),this.client.tracker&&r.WEBTORRENT_ANNOUNCE&&!this.private&&(e.announce=e.announce.concat(r.WEBTORRENT_ANNOUNCE)),this.urlList&&(e.urlList=e.urlList.concat(this.urlList)),U(e.announce),U(e.urlList),Object.assign(this,e),this.magnetURI=E.toMagnetURI(e),this.torrentFile=E.toTorrentFile(e)}_onListening(){if(this.discovery||this.destroyed)return;let e=this.client.tracker;e&&(e=Object.assign({},this.client.tracker,{getAnnounceOpts:()=>{const e={uploaded:this.uploaded,downloaded:this.downloaded,left:s(this.length-this.downloaded,0)};return this.client.tracker.getAnnounceOpts&&Object.assign(e,this.client.tracker.getAnnounceOpts()),this._getAnnounceOpts&&Object.assign(e,this._getAnnounceOpts()),e}})),this.discovery=new g({infoHash:this.infoHash,announce:this.announce,peerId:this.client.peerId,dht:!this.private&&this.client.dht,tracker:e,port:this.client.torrentPort,userAgent:K}),this.discovery.on("error",e=>{this._destroy(e)}),this.discovery.on("peer",e=>{"string"==typeof e&&this.done||this.addPeer(e)}),this.discovery.on("trackerAnnounce",()=>{this.emit("trackerAnnounce"),0===this.numPeers&&this.emit("noPeers","tracker")}),this.discovery.on("dhtAnnounce",()=>{this.emit("dhtAnnounce"),0===this.numPeers&&this.emit("noPeers","dht")}),this.discovery.on("warning",e=>{this.emit("warning",e)}),this.info?this._onMetadata(this):this.xs&&this._getMetadataFromServer()}_getMetadataFromServer(){function e(e,n){function r(r,o,i){if(t.destroyed)return n(null);if(t.metadata)return n(null);if(r)return t.emit("warning",new Error(`http error from xs param: ${e}`)),n(null);if(200!==o.statusCode)return t.emit("warning",new Error(`non-200 status code ${o.statusCode} from xs param: ${e}`)),n(null);let a;try{a=E(i)}catch(e){}return a?a.infoHash===t.infoHash?void(t._onMetadata(a),n(null)):(t.emit("warning",new Error(`got torrent file with incorrect info hash from xs param: ${e}`)),n(null)):(t.emit("warning",new Error(`got invalid torrent file from xs param: ${e}`)),n(null))}if(0!==e.indexOf("http://")&&0!==e.indexOf("https://"))return t.emit("warning",new Error(`skipping non-http xs param: ${e}`)),n(null);let o;try{o=y.concat({url:e,method:"GET",headers:{"user-agent":K}},r)}catch(r){return t.emit("warning",new Error(`skipping invalid url xs param: ${e}`)),n(null)}t._xsRequests.push(o)}const t=this,n=Array.isArray(this.xs)?this.xs:[this.xs],r=n.map(t=>n=>{e(t,n)});S(r)}_onMetadata(e){if(this.metadata||this.destroyed)return;this._debug("got metadata"),this._xsRequests.forEach(e=>{e.abort()}),this._xsRequests=[];let t;if(e&&e.infoHash)t=e;else try{t=E(e)}catch(e){return this._destroy(e)}if(this._processParsedTorrent(t),this.metadata=this.torrentFile,this.client.enableWebSeeds&&this.urlList.forEach(e=>{this.addWebSeed(e)}),this._rarityMap=new F(this),this.store=new w(new this._store(this.pieceLength,{torrent:{infoHash:this.infoHash},files:this.files.map(e=>({path:L.join(this.path,e.path),length:e.length,offset:e.offset})),length:this.length,name:this.infoHash})),this.files=this.files.map(e=>new j(this,e)),this.so){const e=O.parse(this.so);this.files.forEach((t,n)=>{e.includes(n)&&this.files[n].select(!0)})}else 0!==this.pieces.length&&this.select(0,this.pieces.length-1,!1);this._hashes=this.pieces,this.pieces=this.pieces.map((e,t)=>{const n=t===this.pieces.length-1?this.lastPieceLength:this.pieceLength;return new I(n)}),this._reservations=this.pieces.map(()=>[]),this.bitfield=new f(this.pieces.length),this.wires.forEach(e=>{e.ut_metadata&&e.ut_metadata.setMetadata(this.metadata),this._onWireWithMetadata(e)}),this.skipVerify?(this._markAllVerified(),this._onStore()):(this._debug("verifying existing torrent data"),this._fileModtimes&&this._store===i?this.getFileModtimes((e,t)=>{if(e)return this._destroy(e);const n=this.files.map((e,n)=>t[n]===this._fileModtimes[n]).every(e=>e);n?(this._markAllVerified(),this._onStore()):this._verifyPieces()}):this._verifyPieces()),this.emit("metadata")}getFileModtimes(e){const t=[];v(this.files.map((e,n)=>r=>{b.stat(L.join(this.path,e.path),(e,o)=>e&&"ENOENT"!==e.code?r(e):void(t[n]=o&&o.mtime.getTime(),r(null)))}),z,n=>{this._debug("done getting file modtimes"),e(n,t)})}_verifyPieces(){v(this.pieces.map((e,t)=>e=>this.destroyed?e(new Error("torrent is destroyed")):void this.store.get(t,(r,o)=>this.destroyed?e(new Error("torrent is destroyed")):r?n.nextTick(e,null):void R(o,n=>{if(this.destroyed)return e(new Error("torrent is destroyed"));if(n===this._hashes[t]){if(!this.pieces[t])return;this._debug("piece verified %s",t),this._markVerified(t)}else this._debug("piece invalid %s",t);e(null)}))),z,e=>e?this._destroy(e):void(this._debug("done verifying"),this._onStore()))}_markAllVerified(){for(let e=0;e<this.pieces.length;e++)this._markVerified(e)}_markVerified(e){this.pieces[e]=null,this._reservations[e]=null,this.bitfield.set(e,!0)}_onStore(){this.destroyed||(this._debug("on store"),this.ready=!0,this.emit("ready"),this._checkDone(),this._updateSelections())}destroy(e){this._destroy(null,e)}_destroy(e,t){if(!this.destroyed){for(const e in this.destroyed=!0,this._debug("destroy"),this.client._remove(this),clearInterval(this._rechokeIntervalId),this._xsRequests.forEach(e=>{e.abort()}),this._rarityMap&&this._rarityMap.destroy(),this._peers)this.removePeer(e);this.files.forEach(e=>{e instanceof j&&e._destroy()});const n=this._servers.map(e=>t=>{e.destroy(t)});this.discovery&&n.push(e=>{this.discovery.destroy(e)}),this.store&&n.push(e=>{this.store.close(e)}),S(n,t),e&&(0===this.listenerCount("error")?this.client.emit("error",e):this.emit("error",e)),this.emit("close"),this.client=null,this.files=[],this.discovery=null,this.store=null,this._rarityMap=null,this._peers=null,this._servers=null,this._xsRequests=null}}addPeer(t){if(this.destroyed)throw new Error("torrent is destroyed");if(!this.infoHash)throw new Error("addPeer() must not be called before the `infoHash` event");if(this.client.blocked){let e;if("string"==typeof t){let n;try{n=p(t)}catch(n){return this._debug("ignoring peer: invalid %s",t),this.emit("invalidPeer",t),!1}e=n[0]}else"string"==typeof t.remoteAddress&&(e=t.remoteAddress);if(e&&this.client.blocked.contains(e))return this._debug("ignoring peer: blocked %s",t),"string"!=typeof t&&t.destroy(),this.emit("blockedPeer",t),!1}const n=!!this._addPeer(t);return n?this.emit("peer",t):this.emit("invalidPeer",t),n}_addPeer(e){if(this.destroyed)return"string"!=typeof e&&e.destroy(),null;if("string"==typeof e&&!this._validAddr(e))return this._debug("ignoring peer: invalid %s",e),null;const t=e&&e.id||e;if(this._peers[t])return this._debug("ignoring peer: duplicate (%s)",t),"string"!=typeof e&&e.destroy(),null;if(this.paused)return this._debug("ignoring peer: torrent is paused"),"string"!=typeof e&&e.destroy(),null;this._debug("add peer %s",t);let n;return n="string"==typeof e?N.createTCPOutgoingPeer(e,this):N.createWebRTCPeer(e,this),this._peers[n.id]=n,this._peersLength+=1,"string"==typeof e&&(this._queue.push(n),this._drain()),n}addWebSeed(e){if(this.destroyed)throw new Error("torrent is destroyed");if(!/^https?:\/\/.+/.test(e))return this.emit("warning",new Error(`ignoring invalid web seed: ${e}`)),void this.emit("invalidPeer",e);if(this._peers[e])return this.emit("warning",new Error(`ignoring duplicate web seed: ${e}`)),void this.emit("invalidPeer",e);this._debug("add web seed %s",e);const t=N.createWebSeedPeer(e,this);this._peers[t.id]=t,this._peersLength+=1,this.emit("peer",e)}_addIncomingPeer(e){return this.destroyed?e.destroy(new Error("torrent is destroyed")):this.paused?e.destroy(new Error("torrent is paused")):void(this._debug("add incoming peer %s",e.id),this._peers[e.id]=e,this._peersLength+=1)}removePeer(e){const t=e&&e.id||e;e=this._peers[t];e&&(this._debug("removePeer %s",t),delete this._peers[t],this._peersLength-=1,e.destroy(),this._drain())}select(e,t,n,r){if(this.destroyed)throw new Error("torrent is destroyed");if(0>e||t<e||this.pieces.length<=t)throw new Error("invalid selection ",e,":",t);n=+n||0,this._debug("select %s-%s (priority %s)",e,t,n),this._selections.push({from:e,to:t,offset:0,priority:n,notify:r||u}),this._selections.sort((e,t)=>t.priority-e.priority),this._updateSelections()}deselect(e,t,n){if(this.destroyed)throw new Error("torrent is destroyed");n=+n||0,this._debug("deselect %s-%s (priority %s)",e,t,n);for(let r=0;r<this._selections.length;++r){const o=this._selections[r];if(o.from===e&&o.to===t&&o.priority===n){this._selections.splice(r,1);break}}this._updateSelections()}critical(e,t){if(this.destroyed)throw new Error("torrent is destroyed");this._debug("critical %s-%s",e,t);for(let n=e;n<=t;++n)this._critical[n]=!0;this._updateSelections()}_onWire(e,t){if(this._debug("got wire %s (%s)",e._debugId,t||"Unknown"),e.on("download",e=>{this.destroyed||(this.received+=e,this._downloadSpeed(e),this.client._downloadSpeed(e),this.emit("download",e),this.client.emit("download",e))}),e.on("upload",e=>{this.destroyed||(this.uploaded+=e,this._uploadSpeed(e),this.client._uploadSpeed(e),this.emit("upload",e),this.client.emit("upload",e))}),this.wires.push(e),t){const n=p(t);e.remoteAddress=n[0],e.remotePort=n[1]}this.client.dht&&this.client.dht.listening&&e.on("port",n=>this.destroyed||this.client.dht.destroyed?void 0:e.remoteAddress?0===n||65536<n?this._debug("ignoring invalid PORT from peer"):void(this._debug("port: %s (from %s)",n,t),this.client.dht.addNode({host:e.remoteAddress,port:n})):this._debug("ignoring PORT from peer with no address")),e.on("timeout",()=>{this._debug("wire timeout (%s)",t),e.destroy()}),e.setTimeout(3e4,!0),e.setKeepAlive(!0),e.use(P(this.metadata)),e.ut_metadata.on("warning",e=>{this._debug("ut_metadata warning: %s",e.message)}),this.metadata||(e.ut_metadata.on("metadata",e=>{this._debug("got metadata via ut_metadata"),this._onMetadata(e)}),e.ut_metadata.fetch()),"function"!=typeof M||this.private||(e.use(M()),e.ut_pex.on("peer",e=>{this.done||(this._debug("ut_pex: got peer: %s (from %s)",e,t),this.addPeer(e))}),e.ut_pex.on("dropped",e=>{const n=this._peers[e];n&&!n.connected&&(this._debug("ut_pex: dropped peer: %s (from %s)",e,t),this.removePeer(e))}),e.once("close",()=>{e.ut_pex.reset()})),this.emit("wire",e,t),this.metadata&&n.nextTick(()=>{this._onWireWithMetadata(e)})}_onWireWithMetadata(e){let t=null;const n=()=>{this.destroyed||e.destroyed||(this._numQueued>2*(this._numConns-this.numPeers)&&e.amInterested?e.destroy():(t=setTimeout(n,q),t.unref&&t.unref()))};let r;const o=()=>{if(e.peerPieces.buffer.length===this.bitfield.buffer.length){for(r=0;r<this.pieces.length;++r)if(!e.peerPieces.get(r))return;e.isSeeder=!0,e.choke()}};e.on("bitfield",()=>{o(),this._update()}),e.on("have",()=>{o(),this._update()}),e.once("interested",()=>{e.unchoke()}),e.once("close",()=>{clearTimeout(t)}),e.on("choke",()=>{clearTimeout(t),t=setTimeout(n,q),t.unref&&t.unref()}),e.on("unchoke",()=>{clearTimeout(t),this._update()}),e.on("request",(t,n,r,o)=>r>131072?e.destroy():void(this.pieces[t]||this.store.get(t,{offset:n,length:r},o))),e.bitfield(this.bitfield),e.uninterested(),e.peerExtensions.dht&&this.client.dht&&this.client.dht.listening&&e.port(this.client.dht.address().port),"webSeed"!==e.type&&(t=setTimeout(n,q),t.unref&&t.unref()),e.isSeeder=!1,o()}_updateSelections(){!this.ready||this.destroyed||(n.nextTick(()=>{this._gcSelections()}),this._updateInterest(),this._update())}_gcSelections(){for(let e=0;e<this._selections.length;++e){const t=this._selections[e],n=t.offset;for(;this.bitfield.get(t.from+t.offset)&&t.from+t.offset<t.to;)t.offset+=1;n!==t.offset&&t.notify(),t.to===t.from+t.offset&&this.bitfield.get(t.from+t.offset)&&(this._selections.splice(e,1),e-=1,t.notify(),this._updateInterest())}this._selections.length||this.emit("idle")}_updateInterest(){const e=this._amInterested;this._amInterested=!!this._selections.length,this.wires.forEach(e=>{let t=!1;for(let n=0;n<this.pieces.length;++n)if(this.pieces[n]&&e.peerPieces.get(n)){t=!0;break}t?e.interested():e.uninterested()});e===this._amInterested||(this._amInterested?this.emit("interested"):this.emit("uninterested"))}_update(){if(!this.destroyed){const e=T(this.wires);for(let t;t=e();)this._updateWireWrapper(t)}}_updateWireWrapper(e){const t=this;"undefined"!=typeof window&&"function"==typeof window.requestIdleCallback?window.requestIdleCallback(function(){t._updateWire(e)}):t._updateWire(e)}_updateWire(e){function t(t,n,r,o){return a=>a>=t&&a<=n&&!(a in r)&&e.peerPieces.get(a)&&(!o||o(a))}function n(){const t=e.downloadSpeed()||1;if(t>D)return()=>!0;const n=s(1,e.requests.length)*I.BLOCK_LENGTH/t;let r=10,o=0;return e=>{if(!r||a.bitfield.get(e))return!0;for(let i=a.pieces[e].missing;o<a.wires.length;o++){const s=a.wires[o],d=s.downloadSpeed();if(!(d<D)&&!(d<=t)&&s.peerPieces.get(e)&&!(0<(i-=d*n)))return r--,!1}return!0}}function r(e){let t=e;for(let n=e;n<a._selections.length&&a._selections[n].priority;n++)t=n;const n=a._selections[e];a._selections[e]=a._selections[t],a._selections[t]=n}function i(o){if(e.requests.length>=l)return!0;const s=n();for(let n=0;n<a._selections.length;n++){const i=a._selections[n];let d;if("rarest"===a.strategy){const c=i.from+i.offset,u=i.to,p={};let f=0;for(const h=t(c,u,p,s);f<u-c+1&&(d=a._rarityMap.getRarestPiece(h),!(0>d));){for(;a._request(e,d,a._critical[d]||o););if(e.requests.length<l){p[d]=!0,f++;continue}return i.priority&&r(n),!0}}else for(d=i.from+i.offset;d<=i.to;d++)if(e.peerPieces.get(d)&&s(d)){for(;a._request(e,d,a._critical[d]||o););if(!(e.requests.length<l))return i.priority&&r(n),!0}}return!1}const a=this;if(e.peerChoking)return;if(!e.downloaded)return function(){if(!e.requests.length)for(let n=a._selections.length;n--;){const r=a._selections[n];let o;if("rarest"===a.strategy){const n=r.from+r.offset,i=r.to,s={};let d=0;for(const r=t(n,i,s);d<i-n+1&&(o=a._rarityMap.getRarestPiece(r),!(0>o));){if(a._request(e,o,!1))return;s[o]=!0,d+=1}}else for(o=r.to;o>=r.from+r.offset;--o)if(e.peerPieces.get(o)&&a._request(e,o,!1))return}}();const d=o(e,.5);if(e.requests.length>=d)return;const l=o(e,W);i(!1)||i(!0)}_rechoke(){if(!this.ready)return;0<this._rechokeOptimisticTime?this._rechokeOptimisticTime-=1:this._rechokeOptimisticWire=null;const e=[];this.wires.forEach(t=>{t.isSeeder||t===this._rechokeOptimisticWire||e.push({wire:t,downloadSpeed:t.downloadSpeed(),uploadSpeed:t.uploadSpeed(),salt:Math.random(),isChoked:!0})}),e.sort(function(e,t){return e.downloadSpeed===t.downloadSpeed?e.uploadSpeed===t.uploadSpeed?e.wire.amChoking===t.wire.amChoking?e.salt-t.salt:e.wire.amChoking?1:-1:t.uploadSpeed-e.uploadSpeed:t.downloadSpeed-e.downloadSpeed});let t=0,n=0;for(;n<e.length&&t<this._rechokeNumSlots;++n)e[n].isChoked=!1,e[n].wire.peerInterested&&(t+=1);if(!this._rechokeOptimisticWire&&n<e.length&&this._rechokeNumSlots){const t=e.slice(n).filter(e=>e.wire.peerInterested),r=t[c(t.length)];r&&(r.isChoked=!1,this._rechokeOptimisticWire=r.wire,this._rechokeOptimisticTime=2)}e.forEach(e=>{e.wire.amChoking!==e.isChoked&&(e.isChoked?e.wire.choke():e.wire.unchoke())})}_hotswap(e,t){const n=e.downloadSpeed();if(n<I.BLOCK_LENGTH)return!1;if(!this._reservations[t])return!1;const o=this._reservations[t];if(!o)return!1;let r=1/0,a,s;for(s=0;s<o.length;s++){const t=o[s];if(!t||t===e)continue;const i=t.downloadSpeed();i>=D||2*i>n||i>r||(a=t,r=i)}if(!a)return!1;for(s=0;s<o.length;s++)o[s]===a&&(o[s]=null);for(s=0;s<a.requests.length;s++){const e=a.requests[s];e.piece===t&&this.pieces[t].cancel(0|e.offset/I.BLOCK_LENGTH)}return this.emit("hotswap",a,e,t),!0}_request(e,t,a){function s(){n.nextTick(()=>{c._update()})}const c=this,u=e.requests.length,p="webSeed"===e.type;if(c.bitfield.get(t))return!1;const f=p?d(l(e,W,c.pieceLength),c.maxWebConns):o(e,W);if(u>=f)return!1;const h=c.pieces[t];let m=p?h.reserveRemaining():h.reserve();if(-1===m&&a&&c._hotswap(e,t)&&(m=p?h.reserveRemaining():h.reserve()),-1===m)return!1;let g=c._reservations[t];g||(g=c._reservations[t]=[]);let _=g.indexOf(null);-1===_&&(_=g.length),g[_]=e;const b=h.chunkOffset(m),y=p?h.chunkLengthRemaining(m):h.chunkLength(m);return e.request(t,b,y,function n(r,o){if(c.destroyed)return;if(!c.ready)return c.once("ready",()=>{n(r,o)});if(g[_]===e&&(g[_]=null),h!==c.pieces[t])return s();if(r)return c._debug("error getting piece %s (offset: %s length: %s) from %s: %s",t,b,y,`${e.remoteAddress}:${e.remotePort}`,r.message),p?h.cancelRemaining(m):h.cancel(m),void s();if(c._debug("got piece %s (offset: %s length: %s) from %s",t,b,y,`${e.remoteAddress}:${e.remotePort}`),!h.set(m,o,e))return s();const i=h.flush();R(i,e=>{if(!c.destroyed){if(e===c._hashes[t]){if(!c.pieces[t])return;c._debug("piece verified %s",t),c.pieces[t]=null,c._reservations[t]=null,c.bitfield.set(t,!0),c.store.put(t,i),c.wires.forEach(e=>{e.have(t)}),c._checkDone()&&!c.destroyed&&c.discovery.complete()}else c.pieces[t]=new I(h.length),c.emit("warning",new Error(`Piece ${t} failed verification`));s()}})}),!0}_checkDone(){if(this.destroyed)return;this.files.forEach(e=>{if(!e.done){for(let t=e._startPiece;t<=e._endPiece;++t)if(!this.bitfield.get(t))return;e.done=!0,e.emit("done"),this._debug(`file done: ${e.name}`)}});let e=!0;for(let t=0;t<this._selections.length;t++){const n=this._selections[t];for(let t=n.from;t<=n.to;t++)if(!this.bitfield.get(t)){e=!1;break}if(!e)break}return!this.done&&e&&(this.done=!0,this._debug(`torrent done: ${this.infoHash}`),this.emit("done")),this._gcSelections(),e}load(e,t){if(this.destroyed)throw new Error("torrent is destroyed");if(!this.ready)return this.once("ready",()=>{this.load(e,t)});Array.isArray(e)||(e=[e]),t||(t=u);const n=new k(e),r=new h(this.store,this.pieceLength);B(n,r,e=>e?t(e):void(this._markAllVerified(),this._checkDone(),t(null)))}createServer(e){if("function"!=typeof H)throw new Error("node.js-only method");if(this.destroyed)throw new Error("torrent is destroyed");const t=new H(this,e);return this._servers.push(t),t}pause(){this.destroyed||(this._debug("pause"),this.paused=!0)}resume(){this.destroyed||(this._debug("resume"),this.paused=!1,this._drain())}_debug(){const e=[].slice.call(arguments);e[0]=`[${this.client._debugId}] [${this._debugId}] ${e[0]}`,m(...e)}_drain(){if(this._debug("_drain numConns %s maxConns %s",this._numConns,this.client.maxConns),"function"!=typeof x.connect||this.destroyed||this.paused||this._numConns>=this.client.maxConns)return;this._debug("drain (%s queued, %s/%s peers)",this._numQueued,this.numPeers,this.client.maxConns);const e=this._queue.shift();if(!e)return;this._debug("tcp connect attempt to %s",e.addr);const t=p(e.addr),n={host:t[0],port:t[1]},r=e.conn=x.connect(n);r.once("connect",()=>{e.onConnect()}),r.once("error",t=>{e.destroy(t)}),e.startConnectTimeout(),r.on("close",()=>{if(!this.destroyed){if(e.retries>=V.length)return void this._debug("conn %s closed: will not re-add (max %s attempts)",e.addr,V.length);const t=V[e.retries];this._debug("conn %s closed: will re-add to queue in %sms (attempt %s)",e.addr,t,e.retries+1);const n=setTimeout(()=>{const t=this._addPeer(e.addr);t&&(t.retries=e.retries+1)},t);n.unref&&n.unref()}})}_validAddr(e){let t;try{t=p(e)}catch(t){return!1}const n=t[0],r=t[1];return 0<r&&65535>r&&("127.0.0.1"!==n||r!==this.client.torrentPort)}}t.exports=X}).call(this,e("_process"),"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global)},{"../package.json":250,"./file":2,"./peer":3,"./rarity-map":4,"./server":45,_process:138,"addr-to-ip-port":7,bitfield:13,"chunk-store-stream/write":64,debug:69,events:48,fs:46,"fs-chunk-store":105,"immediate-chunk-store":86,multistream:121,net:45,os:45,"parse-numeric-range":133,"parse-torrent":134,path:135,pump:139,"random-iterate":144,"run-parallel":175,"run-parallel-limit":174,"simple-get":179,"simple-sha1":193,speedometer:207,"torrent-discovery":229,"torrent-piece":233,uniq:236,ut_metadata:240,ut_pex:45}],6:[function(e,t){const n=e("bitfield"),r=e("safe-buffer").Buffer,o=e("debug")("webtorrent:webconn"),i=e("simple-get"),a=e("simple-sha1"),l=e("bittorrent-protocol"),c=e("../package.json").version;t.exports=class extends l{constructor(e,t){super(),this.url=e,this.webPeerId=a.sync(e),this._torrent=t,this._init()}_init(){this.setKeepAlive(!0),this.once("handshake",e=>{if(this.destroyed)return;this.handshake(e,this.webPeerId);const t=this._torrent.pieces.length,r=new n(t);for(let n=0;n<=t;n++)r.set(n,!0);this.bitfield(r)}),this.once("interested",()=>{o("interested"),this.unchoke()}),this.on("uninterested",()=>{o("uninterested")}),this.on("choke",()=>{o("choke")}),this.on("unchoke",()=>{o("unchoke")}),this.on("bitfield",()=>{o("bitfield")}),this.on("request",(e,t,n,r)=>{o("request pieceIndex=%d offset=%d length=%d",e,t,n),this.httpRequest(e,t,n,r)})}httpRequest(e,t,n,a){const l=e*this._torrent.pieceLength,u=l+t,p=u+n-1,f=this._torrent.files;let h;if(1>=f.length)h=[{url:this.url,start:u,end:p}];else{const e=f.filter(e=>e.offset<=p&&e.offset+e.length>u);if(1>e.length)return a(new Error("Could not find file corresponnding to web seed range request"));h=e.map(e=>{const t=e.offset+e.length-1,n=this.url+("/"===this.url[this.url.length-1]?"":"/")+e.path;return{url:n,fileOffsetInRange:s(e.offset-u,0),start:s(u-e.offset,0),end:d(t,p-e.offset)}})}let m=0,g=!1,_;1<h.length&&(_=r.alloc(n)),h.forEach(r=>{function s(e,t){return 200>e.statusCode||300<=e.statusCode?(g=!0,a(new Error(`Unexpected HTTP status code ${e.statusCode}`))):void(o("Got data of length %d",t.length),1===h.length?a(null,t):(t.copy(_,r.fileOffsetInRange),++m===h.length&&a(null,_)))}const d=r.url,l=r.start,u=r.end;o("Requesting url=%s pieceIndex=%d offset=%d length=%d start=%d end=%d",d,e,t,n,l,u);const p={url:d,method:"GET",headers:{"user-agent":`WebTorrent/${c} (https://webtorrent.io)`,range:`bytes=${l}-${u}`}};i.concat(p,(e,t,n)=>g?void 0:e?"undefined"==typeof window||d.startsWith(`${window.location.origin}/`)?(g=!0,a(e)):i.head(d,(t,n)=>g?void 0:t?(g=!0,a(t)):200>n.statusCode||300<=n.statusCode?(g=!0,a(new Error(`Unexpected HTTP status code 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Error("infoHash and peerId MUST have length 20");this._debug("handshake i=%s p=%s exts=%o",e,t,r);const a=n.from(_);a[5]|=16,r&&r.dht&&(a[7]|=1),this._push(n.concat([u,a,o,i])),this._handshakeSent=!0,this.peerExtensions.extended&&!this._extendedHandshakeSent&&this._sendExtendedHandshake()}_sendExtendedHandshake(){const e=s(this.extendedHandshake);for(const t in e.m={},this.extendedMapping){const n=this.extendedMapping[t];e.m[n]=+t}this.extended(0,o.encode(e)),this._extendedHandshakeSent=!0}choke(){if(!this.amChoking){for(this.amChoking=!0,this._debug("choke");this.peerRequests.length;)this.peerRequests.pop();this._push(f)}}unchoke(){this.amChoking&&(this.amChoking=!1,this._debug("unchoke"),this._push(h))}interested(){this.amInterested||(this.amInterested=!0,this._debug("interested"),this._push(m))}uninterested(){this.amInterested&&(this.amInterested=!1,this._debug("uninterested"),this._push(g))}have(e){this._debug("have 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e=e.slice(t),{ctime:h(e,0),mtime:h(e,4),timeScale:e.readUInt32BE(8),duration:e.readUInt32BE(12),preferredRate:m(e,16),preferredVolume:g(e,20),matrix:p(e.slice(32,68)),previewTime:e.readUInt32BE(68),previewDuration:e.readUInt32BE(72),posterTime:e.readUInt32BE(76),selectionTime:e.readUInt32BE(80),selectionDuration:e.readUInt32BE(84),currentTime:e.readUInt32BE(88),nextTrackId:e.readUInt32BE(92)}},r.mvhd.encodingLength=function(){return 96},r.tkhd={},r.tkhd.encode=function(e,t,n){return t=t?t.slice(n):w(80),i(e.ctime||new Date,t,0),i(e.mtime||new Date,t,4),t.writeUInt32BE(e.trackId||0,8),o(t,12,16),t.writeUInt32BE(e.duration||0,16),o(t,20,28),t.writeUInt16BE(e.layer||0,28),t.writeUInt16BE(e.alternateGroup||0,30),t.writeUInt16BE(e.volume||0,32),c(e.matrix,t,36),t.writeUInt32BE(e.trackWidth||0,72),t.writeUInt32BE(e.trackHeight||0,76),r.tkhd.encode.bytes=80,t},r.tkhd.decode=function(e,t){return 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t._channel.bufferedAmountLowThreshold&&(t._channel.bufferedAmountLowThreshold=u),t.channelName=t._channel.label,t._channel.onmessage=function(e){t._onChannelMessage(e)},t._channel.onbufferedamountlow=function(){t._onChannelBufferedAmountLow()},t._channel.onopen=function(){t._onChannelOpen()},t._channel.onclose=function(){t._onChannelClose()},t._channel.onerror=function(e){t.destroy(o(e,"ERR_DATA_CHANNEL"))}):t.destroy(o("Data channel event is missing `channel` property","ERR_DATA_CHANNEL"))},r.prototype._read=function(){},r.prototype._write=function(e,t,n){var r=this;if(r.destroyed)return n(o("cannot write after peer is destroyed","ERR_DATA_CHANNEL"));if(r.connected){try{r.send(e)}catch(e){return r.destroy(o(e,"ERR_DATA_CHANNEL"))}r._channel.bufferedAmount>u?(r._debug("start backpressure: bufferedAmount %d",r._channel.bufferedAmount),r._cb=n):n(null)}else r._debug("write before connect"),r._chunk=e,r._cb=n},r.prototype._onFinish=function(){function 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n=e._pc.localDescription||t;e._debug("signal"),e.emit("signal",{type:n.type,sdp:n.sdp})}e.destroyed||(t.sdp=e.sdpTransform(t.sdp),e._pc.setLocalDescription(t,function(){e.destroyed||(e.trickle||e._iceComplete?n():e.once("_iceComplete",n))},function(t){e.destroy(o(t,"ERR_SET_LOCAL_DESCRIPTION"))}))},function(t){e.destroy(o(t,"ERR_CREATE_ANSWER"))},e.answerConstraints)},r.prototype._onIceStateChange=function(){var e=this;if(!e.destroyed){var t=e._pc.iceConnectionState,n=e._pc.iceGatheringState;e._debug("iceStateChange (connection: %s) (gathering: %s)",t,n),e.emit("iceStateChange",t,n),("connected"===t||"completed"===t)&&(e._pcReady=!0,e._maybeReady()),"failed"===t&&e.destroy(o("Ice connection failed.","ERR_ICE_CONNECTION_FAILURE")),"closed"===t&&e.destroy(new Error("Ice connection closed."))}},r.prototype.getStats=function(e){var t=this;0===t._pc.getStats.length?t._pc.getStats().then(function(t){var n=[];t.forEach(function(e){n.push(e)}),e(null,n)},function(t){e(t)}):t._isReactNativeWebrtc?t._pc.getStats(null,function(t){var n=[];t.forEach(function(e){n.push(e)}),e(null,n)},function(t){e(t)}):0<t._pc.getStats.length?t._pc.getStats(function(n){if(!t.destroyed){var r=[];n.result().forEach(function(e){var t={};e.names().forEach(function(n){t[n]=e.stat(n)}),t.id=e.id,t.type=e.type,t.timestamp=e.timestamp,r.push(t)}),e(null,r)}},function(t){e(t)}):e(null,[])},r.prototype._maybeReady=function(){function e(){t.destroyed||t.getStats(function(n,r){function i(e){l=!0;var n=s[e.localCandidateId];n&&n.ip?(t.localAddress=n.ip,t.localPort=+n.port):n&&n.ipAddress?(t.localAddress=n.ipAddress,t.localPort=+n.portNumber):"string"==typeof e.googLocalAddress&&(n=e.googLocalAddress.split(":"),t.localAddress=n[0],t.localPort=+n[1]);var r=a[e.remoteCandidateId];r&&r.ip?(t.remoteAddress=r.ip,t.remotePort=+r.port):r&&r.ipAddress?(t.remoteAddress=r.ipAddress,t.remotePort=+r.portNumber):"string"==typeof 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C=C||n.host&&E.length,C&&!U&&E.unshift(""),E.length?n.pathname=E.join("/"):(n.pathname=null,n.path=null),d.isNull(n.pathname)&&d.isNull(n.search)||(n.path=(n.pathname?n.pathname:"")+(n.search?n.search:"")),n.auth=e.auth||n.auth,n.slashes=n.slashes||e.slashes,n.href=n.format(),n},r.prototype.parseHost=function(){var e=this.host,t=u.exec(e);t&&(t=t[0],":"!==t&&(this.port=t.substr(1)),e=e.substr(0,e.length-t.length)),e&&(this.hostname=e)}},{"./util":239,punycode:140,querystring:143}],239:[function(e,t){"use strict";t.exports={isString:function(e){return"string"==typeof e},isObject:function(e){return"object"==typeof e&&null!==e},isNull:function(e){return null===e},isNullOrUndefined:function(e){return null==e}}},{}],240:[function(e,t){(function(n){const{EventEmitter:r}=e("events"),o=e("bencode"),i=e("bitfield"),s=e("debug")("ut_metadata"),d=e("simple-sha1"),l=1E3,c=16384;t.exports=e=>{class t extends r{constructor(t){super(),this._wire=t,this._fetching=!1,this._metadataComplete=!1,this._metadataSize=null,this._remainingRejects=null,this._bitfield=new i(0,{grow:l}),n.isBuffer(e)&&this.setMetadata(e)}onHandshake(e){this._infoHash=e}onExtendedHandshake(e){return e.m&&e.m.ut_metadata?e.metadata_size?"number"!=typeof e.metadata_size||1E7<e.metadata_size||0>=e.metadata_size?this.emit("warning",new Error("Peer gave invalid metadata size")):void(this._metadataSize=e.metadata_size,this._numPieces=a(this._metadataSize/c),this._remainingRejects=2*this._numPieces,this._fetching&&this._requestPieces()):this.emit("warning",new Error("Peer does not have metadata")):this.emit("warning",new Error("Peer does not support ut_metadata"))}onMessage(e){let t,n;try{const r=e.toString(),i=r.indexOf("ee")+2;t=o.decode(r.substring(0,i)),n=e.slice(i)}catch(e){return}switch(t.msg_type){case 0:this._onRequest(t.piece);break;case 1:this._onData(t.piece,n,t.total_size);break;case 2:this._onReject(t.piece);}}fetch(){this._metadataComplete||(this._fetching=!0,this._metadataSize&&this._requestPieces())}cancel(){this._fetching=!1}setMetadata(e){if(this._metadataComplete)return!0;s("set metadata");try{const t=o.decode(e).info;t&&(e=o.encode(t))}catch(e){}return!(this._infoHash&&this._infoHash!==d.sync(e))&&(this.cancel(),this.metadata=e,this._metadataComplete=!0,this._metadataSize=this.metadata.length,this._wire.extendedHandshake.metadata_size=this._metadataSize,this.emit("metadata",o.encode({info:o.decode(this.metadata)})),!0)}_send(e,t){let r=o.encode(e);n.isBuffer(t)&&(r=n.concat([r,t])),this._wire.extended("ut_metadata",r)}_request(e){this._send({msg_type:0,piece:e})}_data(e,t,n){const r={msg_type:1,piece:e};"number"==typeof n&&(r.total_size=n),this._send(r,t)}_reject(e){this._send({msg_type:2,piece:e})}_onRequest(e){if(!this._metadataComplete)return void this._reject(e);const t=e*c;let n=t+c;n>this._metadataSize&&(n=this._metadataSize);const r=this.metadata.slice(t,n);this._data(e,r,this._metadataSize)}_onData(e,t){t.length>c||(t.copy(this.metadata,e*c),this._bitfield.set(e),this._checkDone())}_onReject(e){0<this._remainingRejects&&this._fetching?(this._request(e),this._remainingRejects-=1):this.emit("warning",new Error("Peer sent \"reject\" too much"))}_requestPieces(){this.metadata=n.alloc(this._metadataSize);for(let e=0;e<this._numPieces;e++)this._request(e)}_checkDone(){let e=!0;for(let t=0;t<this._numPieces;t++)if(!this._bitfield.get(t)){e=!1;break}if(e){const e=this.setMetadata(this.metadata);e||this._failedMetadata()}}_failedMetadata(){this._bitfield=new i(0,{grow:l}),this._remainingRejects-=this._numPieces,0<this._remainingRejects?this._requestPieces():this.emit("warning",new Error("Peer sent invalid metadata"))}}return t.prototype.name="ut_metadata",t}}).call(this,e("buffer").Buffer)},{bencode:11,bitfield:13,buffer:47,debug:241,events:48,"simple-sha1":193}],241:[function(e,t,n){arguments[4][15][0].apply(n,arguments)},{"./common":242,_process:138,dup:15}],242:[function(e,t,n){arguments[4][16][0].apply(n,arguments)},{dup:16,ms:243}],243:[function(e,t,n){arguments[4][17][0].apply(n,arguments)},{dup:17}],244:[function(e,t){(function(e){function n(t){try{if(!e.localStorage)return!1}catch(e){return!1}var n=e.localStorage[t];return null!=n&&"true"===(n+"").toLowerCase()}t.exports=function(e,t){function r(){if(!o){if(n("throwDeprecation"))throw new Error(t);else n("traceDeprecation")?console.trace(t):console.warn(t);o=!0}return e.apply(this,arguments)}if(n("noDeprecation"))return e;var o=!1;return r}}).call(this,"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global)},{}],245:[function(e,t){(function(r){function o(e){var t=this;i.call(t),t._tracks=[],t._fragmentSequence=1,t._file=e,t._decoder=null,t._findMoov(0)}function a(e,t){var n=this;n._entries=e,n._countName=t||"count",n._index=0,n._offset=0,n.value=n._entries[0]}function s(){return{version:0,flags:0,entries:[]}}var d=e("binary-search"),i=e("events").EventEmitter,l=e("inherits"),c=e("mp4-stream"),u=e("mp4-box-encoding"),p=e("range-slice-stream");t.exports=o,l(o,i),o.prototype._findMoov=function(e){var t=this;t._decoder&&t._decoder.destroy(),t._decoder=c.decode();var n=t._file.createReadStream({start:e});n.pipe(t._decoder),t._decoder.once("box",function(r){"moov"===r.type?t._decoder.decode(function(e){n.destroy();try{t._processMoov(e)}catch(e){e.message="Cannot parse mp4 file: "+e.message,t.emit("error",e)}}):(n.destroy(),t._findMoov(e+r.length))})},a.prototype.inc=function(){var e=this;e._offset++,e._offset>=e._entries[e._index][e._countName]&&(e._index++,e._offset=0),e.value=e._entries[e._index]},o.prototype._processMoov=function(e){var t=this,n=e.traks;t._tracks=[],t._hasVideo=!1,t._hasAudio=!1;for(var o=0;o<n.length;o++){var d=n[o],l=d.mdia.minf.stbl,c=l.stsd.entries[0],p=d.mdia.hdlr.handlerType,f,h;if("vide"===p&&"avc1"===c.type){if(t._hasVideo)continue;t._hasVideo=!0,f="avc1",c.avcC&&(f+="."+c.avcC.mimeCodec),h="video/mp4; codecs=\""+f+"\""}else if("soun"===p&&"mp4a"===c.type){if(t._hasAudio)continue;t._hasAudio=!0,f="mp4a",c.esds&&c.esds.mimeCodec&&(f+="."+c.esds.mimeCodec),h="audio/mp4; codecs=\""+f+"\""}else continue;var m=[],g=0,_=0,b=0,y=0,w=0,k=0,x=new a(l.stts.entries),C=null;l.ctts&&(C=new a(l.ctts.entries));for(var S=0;;){var v=l.stsc.entries[w],E=l.stsz.entries[g],L=x.value.duration,I=C?C.value.compositionOffset:0,B=!0;l.stss&&(B=l.stss.entries[S]===g+1);var T=l.stco||l.co64;if(m.push({size:E,duration:L,dts:k,presentationOffset:I,sync:B,offset:y+T.entries[b]}),g++,g>=l.stsz.entries.length)break;if(_++,y+=E,_>=v.samplesPerChunk){_=0,y=0,b++;var R=l.stsc.entries[w+1];R&&b+1>=R.firstChunk&&w++}k+=L,x.inc(),C&&C.inc(),B&&S++}d.mdia.mdhd.duration=0,d.tkhd.duration=0;var A=v.sampleDescriptionId,U={type:"moov",mvhd:e.mvhd,traks:[{tkhd:d.tkhd,mdia:{mdhd:d.mdia.mdhd,hdlr:d.mdia.hdlr,elng:d.mdia.elng,minf:{vmhd:d.mdia.minf.vmhd,smhd:d.mdia.minf.smhd,dinf:d.mdia.minf.dinf,stbl:{stsd:l.stsd,stts:s(),ctts:s(),stsc:s(),stsz:s(),stco:s(),stss:s()}}}}],mvex:{mehd:{fragmentDuration:e.mvhd.duration},trexs:[{trackId:d.tkhd.trackId,defaultSampleDescriptionIndex:A,defaultSampleDuration:0,defaultSampleSize:0,defaultSampleFlags:0}]}};t._tracks.push({trackId:d.tkhd.trackId,timeScale:d.mdia.mdhd.timeScale,samples:m,currSample:null,currTime:null,moov:U,mime:h})}if(0===t._tracks.length)return void t.emit("error",new Error("no playable tracks"));e.mvhd.duration=0,t._ftyp={type:"ftyp",brand:"iso5",brandVersion:0,compatibleBrands:["iso5"]};var P=u.encode(t._ftyp),M=t._tracks.map(function(e){var t=u.encode(e.moov);return{mime:e.mime,init:r.concat([P,t])}});t.emit("ready",M)},o.prototype.seek=function(e){var t=this;if(!t._tracks)throw new Error("Not ready yet; wait for 'ready' event");t._fileStream&&(t._fileStream.destroy(),t._fileStream=null);var n=-1;if(t._tracks.map(function(r,o){function i(e){a.destroyed||a.box(e.moof,function(n){if(n)return t.emit("error",n);if(!a.destroyed){var s=r.inStream.slice(e.ranges);s.pipe(a.mediaData(e.length,function(e){if(e)return t.emit("error",e);if(!a.destroyed){var n=t._generateFragment(o);return n?void i(n):a.finalize()}}))}})}r.outStream&&r.outStream.destroy(),r.inStream&&(r.inStream.destroy(),r.inStream=null);var a=r.outStream=c.encode(),s=t._generateFragment(o,e);return s?void((-1===n||s.ranges[0].start<n)&&(n=s.ranges[0].start),i(s)):a.finalize()}),0<=n){var r=t._fileStream=t._file.createReadStream({start:n});t._tracks.forEach(function(e){e.inStream=new p(n,{highWaterMark:1e7}),r.pipe(e.inStream)})}return t._tracks.map(function(e){return e.outStream})},o.prototype._findSampleBefore=function(e,t){var r=this,o=r._tracks[e],i=n(o.timeScale*t),a=d(o.samples,i,function(e,n){var t=e.dts+e.presentationOffset;return t-n});for(-1===a?a=0:0>a&&(a=-a-2);!o.samples[a].sync;)a--;return a};o.prototype._generateFragment=function(e,t){var n=this,r=n._tracks[e],o;if(o=void 0===t?r.currSample:n._findSampleBefore(e,t),o>=r.samples.length)return null;for(var i=r.samples[o].dts,a=0,s=[],d=o,l;d<r.samples.length&&(l=r.samples[d],!(l.sync&&l.dts-i>=1*r.timeScale));d++){a+=l.size;var c=s.length-1;0>c||s[c].end!==l.offset?s.push({start:l.offset,end:l.offset+l.size}):s[c].end+=l.size}return r.currSample=d,{moof:n._generateMoof(e,o,d),ranges:s,length:a}},o.prototype._generateMoof=function(e,t,n){for(var r=this,o=r._tracks[e],i=[],a=0,s=t,d;s<n;s++)d=o.samples[s],0>d.presentationOffset&&(a=1),i.push({sampleDuration:d.duration,sampleSize:d.size,sampleFlags:d.sync?33554432:16842752,sampleCompositionTimeOffset:d.presentationOffset});var l={type:"moof",mfhd:{sequenceNumber:r._fragmentSequence++},trafs:[{tfhd:{flags:131072,trackId:o.trackId},tfdt:{baseMediaDecodeTime:o.samples[t].dts},trun:{flags:3841,dataOffset:8,entries:i,version:a}}]};return l.trafs[0].trun.dataOffset+=u.encodingLength(l),l}}).call(this,e("buffer").Buffer)},{"binary-search":12,buffer:47,events:48,inherits:87,"mp4-box-encoding":108,"mp4-stream":111,"range-slice-stream":146}],246:[function(e,t){function n(e,t,o){var i=this;return this instanceof n?void(o=o||{},i.detailedError=null,i._elem=t,i._elemWrapper=new r(t),i._waitingFired=!1,i._trackMeta=null,i._file=e,i._tracks=null,"none"!==i._elem.preload&&i._createMuxer(),i._onError=function(){i.detailedError=i._elemWrapper.detailedError,i.destroy()},i._onWaiting=function(){i._waitingFired=!0,i._muxer?i._tracks&&i._pump():i._createMuxer()},i._elem.addEventListener("waiting",i._onWaiting),i._elem.addEventListener("error",i._onError)):new n(e,t,o)}var r=e("mediasource"),o=e("pump"),i=e("./mp4-remuxer");t.exports=n,n.prototype._createMuxer=function(){var e=this;e._muxer=new i(e._file),e._muxer.on("ready",function(t){e._tracks=t.map(function(t){var n=e._elemWrapper.createWriteStream(t.mime);n.on("error",function(t){e._elemWrapper.error(t)});var r={muxed:null,mediaSource:n,initFlushed:!1,onInitFlushed:null};return n.write(t.init,function(e){r.initFlushed=!0,r.onInitFlushed&&r.onInitFlushed(e)}),r}),(e._waitingFired||"auto"===e._elem.preload)&&e._pump()}),e._muxer.on("error",function(t){e._elemWrapper.error(t)})},n.prototype._pump=function(){var e=this,t=e._muxer.seek(e._elem.currentTime,!e._tracks);e._tracks.forEach(function(n,r){var i=function(){n.muxed&&(n.muxed.destroy(),n.mediaSource=e._elemWrapper.createWriteStream(n.mediaSource),n.mediaSource.on("error",function(t){e._elemWrapper.error(t)})),n.muxed=t[r],o(n.muxed,n.mediaSource)};n.initFlushed?i():n.onInitFlushed=function(t){return t?void e._elemWrapper.error(t):void i()}})},n.prototype.destroy=function(){var e=this;e.destroyed||(e.destroyed=!0,e._elem.removeEventListener("waiting",e._onWaiting),e._elem.removeEventListener("error",e._onError),e._tracks&&e._tracks.forEach(function(e){e.muxed&&e.muxed.destroy()}),e._elem.src="")}},{"./mp4-remuxer":245,mediasource:95,pump:139}],247:[function(e,t){function n(e,t){function r(){for(var t=Array(arguments.length),n=0;n<t.length;n++)t[n]=arguments[n];var r=e.apply(this,t),o=t[t.length-1];return"function"==typeof r&&r!==o&&Object.keys(o).forEach(function(e){r[e]=o[e]}),r}if(e&&t)return n(e)(t);if("function"!=typeof e)throw new TypeError("need wrapper function");return Object.keys(e).forEach(function(t){r[t]=e[t]}),r}t.exports=n},{}],248:[function(e,t){t.exports=function(){for(var e={},t=0,r;t<arguments.length;t++)for(var o in r=arguments[t],r)n.call(r,o)&&(e[o]=r[o]);return e};var n=Object.prototype.hasOwnProperty},{}],249:[function(e,t){t.exports=function(e){for(var t=1,r;t<arguments.length;t++)for(var o in r=arguments[t],r)n.call(r,o)&&(e[o]=r[o]);return e};var n=Object.prototype.hasOwnProperty},{}],250:[function(e,t){t.exports={version:"0.103.1"}},{}],251:[function(e,t){(function(n,r){function o(e){return"object"==typeof e&&null!=e&&"function"==typeof e.pipe}function i(e){return"undefined"!=typeof FileList&&e instanceof FileList}const{Buffer:a}=e("safe-buffer"),{EventEmitter:s}=e("events"),d=e("simple-concat"),l=e("create-torrent"),c=e("debug")("webtorrent"),u=e("bittorrent-dht/client"),p=e("load-ip-set"),f=e("run-parallel"),h=e("parse-torrent"),m=e("path"),g=e("simple-peer"),_=e("randombytes"),b=e("speedometer"),y=e("./lib/tcp-pool"),w=e("./lib/torrent"),k=e("./package.json").version,x=k.replace(/\d*./g,e=>`0${e%100}`.slice(-2)).slice(0,4);class C extends s{constructor(e={}){super(),this.peerId="string"==typeof e.peerId?e.peerId:a.isBuffer(e.peerId)?e.peerId.toString("hex"):a.from(`-WW${x}-`+_(9).toString("base64")).toString("hex"),this.peerIdBuffer=a.from(this.peerId,"hex"),this.nodeId="string"==typeof e.nodeId?e.nodeId:a.isBuffer(e.nodeId)?e.nodeId.toString("hex"):_(20).toString("hex"),this.nodeIdBuffer=a.from(this.nodeId,"hex"),this._debugId=this.peerId.toString("hex").substring(0,7),this.destroyed=!1,this.listening=!1,this.torrentPort=e.torrentPort||0,this.dhtPort=e.dhtPort||0,this.tracker=e.tracker===void 0?{}:e.tracker,this.torrents=[],this.maxConns=+e.maxConns||55,this._debug("new webtorrent (peerId %s, nodeId %s, port %s)",this.peerId,this.nodeId,this.torrentPort),this.tracker&&("object"!=typeof this.tracker&&(this.tracker={}),e.rtcConfig&&(console.warn("WebTorrent: opts.rtcConfig is deprecated. Use opts.tracker.rtcConfig instead"),this.tracker.rtcConfig=e.rtcConfig),e.wrtc&&(console.warn("WebTorrent: opts.wrtc is deprecated. Use opts.tracker.wrtc instead"),this.tracker.wrtc=e.wrtc),r.WRTC&&!this.tracker.wrtc&&(this.tracker.wrtc=r.WRTC)),"function"==typeof y?this._tcpPool=new y(this):n.nextTick(()=>{this._onListening()}),this._downloadSpeed=b(),this._uploadSpeed=b(),!1!==e.dht&&"function"==typeof u?(this.dht=new u(Object.assign({},{nodeId:this.nodeId},e.dht)),this.dht.once("error",e=>{this._destroy(e)}),this.dht.once("listening",()=>{const e=this.dht.address();e&&(this.dhtPort=e.port)}),this.dht.setMaxListeners(0),this.dht.listen(this.dhtPort)):this.dht=!1,this.enableWebSeeds=!1!==e.webSeeds;const t=()=>{this.destroyed||(this.ready=!0,this.emit("ready"))};"function"==typeof p&&null!=e.blocklist?p(e.blocklist,{headers:{"user-agent":`WebTorrent/${k} (https://webtorrent.io)`}},(e,n)=>e?this.error(`Failed to load blocklist: ${e.message}`):void(this.blocked=n,t())):n.nextTick(t)}get downloadSpeed(){return this._downloadSpeed()}get uploadSpeed(){return this._uploadSpeed()}get progress(){const e=this.torrents.filter(e=>1!==e.progress),t=e.reduce((e,t)=>e+t.downloaded,0),n=e.reduce((e,t)=>e+(t.length||0),0)||1;return t/n}get ratio(){const e=this.torrents.reduce((e,t)=>e+t.uploaded,0),t=this.torrents.reduce((e,t)=>e+t.received,0)||1;return e/t}get(e){if(!(e instanceof w)){let t;try{t=h(e)}catch(e){}if(!t)return null;if(!t.infoHash)throw new Error("Invalid torrent identifier");for(const e of this.torrents)if(e.infoHash===t.infoHash)return e}else if(this.torrents.includes(e))return e;return null}download(e,t,n){return console.warn("WebTorrent: client.download() is deprecated. Use client.add() instead"),this.add(e,t,n)}add(e,t={},n){function r(){a.removeListener("_infoHash",o),a.removeListener("ready",i),a.removeListener("close",r)}if(this.destroyed)throw new Error("client is destroyed");"function"==typeof t&&([t,n]=[{},t]);const o=()=>{if(!this.destroyed)for(const e of this.torrents)if(e.infoHash===a.infoHash&&e!==a)return void a._destroy(new Error(`Cannot add duplicate torrent ${a.infoHash}`))},i=()=>{this.destroyed||("function"==typeof n&&n(a),this.emit("torrent",a))};this._debug("add"),t=t?Object.assign({},t):{};const a=new w(e,this,t);return this.torrents.push(a),a.once("_infoHash",o),a.once("ready",i),a.once("close",r),a}seed(e,t,n){if(this.destroyed)throw new Error("client is destroyed");"function"==typeof t&&([t,n]=[{},t]),this._debug("seed"),t=t?Object.assign({},t):{},t.skipVerify=!0;const r="string"==typeof e;r&&(t.path=m.dirname(e)),t.createdBy||(t.createdBy=`WebTorrent/${x}`);const a=e=>{this._debug("on seed"),"function"==typeof n&&n(e),e.emit("seed"),this.emit("seed",e)},s=this.add(null,t,e=>{const t=[t=>r?t():void e.load(c,t)];this.dht&&t.push(t=>{e.once("dhtAnnounce",t)}),f(t,t=>this.destroyed?void 0:t?e._destroy(t):void a(e))});let c;return i(e)?e=Array.from(e):!Array.isArray(e)&&(e=[e]),f(e.map(e=>t=>{o(e)?d(e,t):t(null,e)}),(e,n)=>this.destroyed?void 0:e?s._destroy(e):void l.parseInput(n,t,(e,r)=>this.destroyed?void 0:e?s._destroy(e):void(c=r.map(e=>e.getStream),l(n,t,(e,t)=>{if(!this.destroyed){if(e)return s._destroy(e);const n=this.get(t);n?s._destroy(new Error(`Cannot add duplicate torrent ${n.infoHash}`)):s._onTorrentId(t)}})))),s}remove(e,t){this._debug("remove");const n=this.get(e);if(!n)throw new Error(`No torrent with id ${e}`);this._remove(e,t)}_remove(e,t){const n=this.get(e);n&&(this.torrents.splice(this.torrents.indexOf(n),1),n.destroy(t))}address(){return this.listening?this._tcpPool?this._tcpPool.server.address():{address:"0.0.0.0",family:"IPv4",port:0}:null}destroy(e){if(this.destroyed)throw new Error("client already destroyed");this._destroy(null,e)}_destroy(e,t){this._debug("client destroy"),this.destroyed=!0;const n=this.torrents.map(e=>t=>{e.destroy(t)});this._tcpPool&&n.push(e=>{this._tcpPool.destroy(e)}),this.dht&&n.push(e=>{this.dht.destroy(e)}),f(n,t),e&&this.emit("error",e),this.torrents=[],this._tcpPool=null,this.dht=null}_onListening(){if(this._debug("listening"),this.listening=!0,this._tcpPool){const e=this._tcpPool.server.address();e&&(this.torrentPort=e.port)}this.emit("listening")}_debug(){const e=[].slice.call(arguments);e[0]=`[${this._debugId}] ${e[0]}`,c(...e)}}C.WEBRTC_SUPPORT=g.WEBRTC_SUPPORT,C.VERSION=k,t.exports=C}).call(this,e("_process"),"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global)},{"./lib/tcp-pool":45,"./lib/torrent":5,"./package.json":250,_process:138,"bittorrent-dht/client":45,"create-torrent":67,debug:69,events:48,"load-ip-set":45,"parse-torrent":134,path:135,randombytes:145,"run-parallel":175,"safe-buffer":177,"simple-concat":178,"simple-peer":180,speedometer:207}]},{},[251])(251)});
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e={RTCPeerConnection:window.RTCPeerConnection||window.mozRTCPeerConnection||window.webkitRTCPeerConnection,RTCSessionDescription:window.RTCSessionDescription||window.mozRTCSessionDescription||window.webkitRTCSessionDescription,RTCIceCandidate:window.RTCIceCandidate||window.mozRTCIceCandidate||window.webkitRTCIceCandidate};return e.RTCPeerConnection?e:null},In={};(function(e,t){"use strict";var n=N.Buffer,r=t.crypto||t.msCrypto;In=r&&r.getRandomValues?function(t,i){if(t>4294967295)throw new RangeError("requested too many random bytes");var s=n.allocUnsafe(t);if(t>0)if(t>65536)for(var o=0;o<t;o+=65536)r.getRandomValues(s.slice(o,o+65536));else r.getRandomValues(s);return"function"==typeof i?e.nextTick(function(){i(null,s)}):s}:function(){throw new Error("Secure random number generation is not supported by this browser.\nUse Chrome, Firefox or Internet Explorer 11")}}).call(this,ce,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{});var An={};(function(e){An=r;var t=jt("simple-peer"),n=5e3;function r(e){var t=this;if(!(t instanceof r))return new r(e);if(t._id=In(4).toString("hex").slice(0,7),t._debug("new peer %o",e),e=Object.assign({allowHalfOpen:!1},e),Ze.Duplex.call(t,e),t.channelName=e.initiator?e.channelName||In(20).toString("hex"):null,t.initiator=e.initiator||!1,t.channelConfig=e.channelConfig||r.channelConfig,t.config=Object.assign({},r.config,e.config),t.offerOptions=e.offerOptions||{},t.answerOptions=e.answerOptions||{},t.sdpTransform=e.sdpTransform||function(e){return e},t.streams=e.streams||(e.stream?[e.stream]:[]),t.trickle=void 0===e.trickle||e.trickle,t.allowHalfTrickle=void 0!==e.allowHalfTrickle&&e.allowHalfTrickle,t.iceCompleteTimeout=e.iceCompleteTimeout||n,t.destroyed=!1,t._connected=!1,t.remoteAddress=void 0,t.remoteFamily=void 0,t.remotePort=void 0,t.localAddress=void 0,t.localFamily=void 0,t.localPort=void 0,t._wrtc=e.wrtc&&"object"==typeof e.wrtc?e.wrtc:Tn(),!t._wrtc)throw"undefined"==typeof 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n.code=t,n}Re(r,Ze.Duplex),r.WEBRTC_SUPPORT=!!Tn(),r.config={iceServers:[{urls:"stun:stun.l.google.com:19302"},{urls:"stun:global.stun.twilio.com:3478?transport=udp"}],sdpSemantics:"unified-plan"},r.channelConfig={},Object.defineProperty(r.prototype,"bufferSize",{get:function(){return this._channel&&this._channel.bufferedAmount||0}}),Object.defineProperty(r.prototype,"connected",{get:function(){return this._connected&&"open"===this._channel.readyState}}),r.prototype.address=function(){return{port:this.localPort,family:this.localFamily,address:this.localAddress}},r.prototype.signal=function(e){var t=this;if(t.destroyed)throw s("cannot signal after peer is destroyed","ERR_SIGNALING");if("string"==typeof e)try{e=JSON.parse(e)}catch(fi){e={}}t._debug("signal()"),e.renegotiate&&t.initiator&&(t._debug("got request to renegotiate"),t._needsNegotiation()),e.transceiverRequest&&t.initiator&&(t._debug("got request for 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t=this;if(!e.channel)return t.destroy(s("Data channel event is missing `channel` property","ERR_DATA_CHANNEL"));t._channel=e.channel,t._channel.binaryType="arraybuffer","number"==typeof t._channel.bufferedAmountLowThreshold&&(t._channel.bufferedAmountLowThreshold=65536),t.channelName=t._channel.label,t._channel.onmessage=function(e){t._onChannelMessage(e)},t._channel.onbufferedamountlow=function(){t._onChannelBufferedAmountLow()},t._channel.onopen=function(){t._onChannelOpen()},t._channel.onclose=function(){t._onChannelClose()},t._channel.onerror=function(e){t.destroy(s(e,"ERR_DATA_CHANNEL"))};var n=!1;t._closingInterval=setInterval(function(){t._channel&&"closing"===t._channel.readyState?(n&&t._onChannelClose(),n=!0):n=!1},5e3)},r.prototype._read=function(){},r.prototype._write=function(e,t,n){if(this.destroyed)return n(s("cannot write after peer is destroyed","ERR_DATA_CHANNEL"));if(this._connected){try{this.send(e)}catch(fi){return this.destroy(s(fi,"ERR_DATA_CHANNEL"))}this._channel.bufferedAmount>65536?(this._debug("start backpressure: bufferedAmount %d",this._channel.bufferedAmount),this._cb=n):n(null)}else this._debug("write before connect"),this._chunk=e,this._cb=n},r.prototype._onFinish=function(){var e=this;function t(){setTimeout(function(){e.destroy()},1e3)}e.destroyed||(e._connected?t():e.once("connect",t))},r.prototype._startIceCompleteTimeout=function(){var e=this;e.destroyed||e._iceCompleteTimer||(e._debug("started iceComplete timeout"),e._iceCompleteTimer=setTimeout(function(){e._iceComplete||(e._iceComplete=!0,e._debug("iceComplete timeout completed"),e.emit("iceTimeout"),e.emit("_iceComplete"))},e.iceCompleteTimeout))},r.prototype._createOffer=function(){var e=this;e.destroyed||e._pc.createOffer(e.offerOptions).then(function(t){function n(){if(!e.destroyed){var n=e._pc.localDescription||t;e._debug("signal"),e.emit("signal",{type:n.type,sdp:n.sdp})}}e.destroyed||(e.trickle||e.allowHalfTrickle||(t.sdp=i(t.sdp)),t.sdp=e.sdpTransform(t.sdp),e._pc.setLocalDescription(t).then(function(){e._debug("createOffer success"),e.destroyed||(e.trickle||e._iceComplete?n():e.once("_iceComplete",n))}).catch(function(t){e.destroy(s(t,"ERR_SET_LOCAL_DESCRIPTION"))}))}).catch(function(t){e.destroy(s(t,"ERR_CREATE_OFFER"))})},r.prototype._requestMissingTransceivers=function(){var e=this;e._pc.getTransceivers&&e._pc.getTransceivers().forEach(t=>{t.mid||!t.sender.track||t.requested||(t.requested=!0,e.addTransceiver(t.sender.track.kind))})},r.prototype._createAnswer=function(){var e=this;e.destroyed||e._pc.createAnswer(e.answerOptions).then(function(t){function n(){if(!e.destroyed){var 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n(e){return"[object Array]"===Object.prototype.toString.call(e.values)&&e.values.forEach(function(t){Object.assign(e,t)}),e}0===t._pc.getStats.length?t._pc.getStats().then(function(t){var r=[];t.forEach(function(e){r.push(n(e))}),e(null,r)},function(t){e(t)}):t._isReactNativeWebrtc?t._pc.getStats(null,function(t){var r=[];t.forEach(function(e){r.push(n(e))}),e(null,r)},function(t){e(t)}):t._pc.getStats.length>0?t._pc.getStats(function(r){if(!t.destroyed){var i=[];r.result().forEach(function(e){var t={};e.names().forEach(function(n){t[n]=e.stat(n)}),t.id=e.id,t.type=e.type,t.timestamp=e.timestamp,i.push(n(t))}),e(null,i)}},function(t){e(t)}):e(null,[])},r.prototype._maybeReady=function(){var e=this;e._debug("maybeReady pc %s channel %s",e._pcReady,e._channelReady),!e._connected&&!e._connecting&&e._pcReady&&e._channelReady&&(e._connecting=!0,function t(){e.destroyed||e.getStats(function(n,r){if(!e.destroyed){n&&(r=[]);var i={},o={},a={},h=!1;if(r.forEach(function(e){"remotecandidate"!==e.type&&"remote-candidate"!==e.type||(i[e.id]=e),"localcandidate"!==e.type&&"local-candidate"!==e.type||(o[e.id]=e),"candidatepair"!==e.type&&"candidate-pair"!==e.type||(a[e.id]=e)}),r.forEach(function(e){"transport"===e.type&&e.selectedCandidatePairId&&u(a[e.selectedCandidatePairId]),("googCandidatePair"===e.type&&"true"===e.googActiveConnection||("candidatepair"===e.type||"candidate-pair"===e.type)&&e.selected)&&u(e)}),h||Object.keys(a).length&&!Object.keys(o).length){if(e._connecting=!1,e._connected=!0,e._chunk){try{e.send(e._chunk)}catch(n){return e.destroy(s(n,"ERR_DATA_CHANNEL"))}e._chunk=null,e._debug('sent chunk from "write before connect"');var c=e._cb;e._cb=null,c(null)}"number"!=typeof e._channel.bufferedAmountLowThreshold&&(e._interval=setInterval(function(){e._onInterval()},150),e._interval.unref&&e._interval.unref()),e._debug("connect"),e.emit("connect")}else setTimeout(t,100)}function u(t){h=!0;var n=o[t.localCandidateId];n&&(n.ip||n.address)?(e.localAddress=n.ip||n.address,e.localPort=Number(n.port)):n&&n.ipAddress?(e.localAddress=n.ipAddress,e.localPort=Number(n.portNumber)):"string"==typeof t.googLocalAddress&&(n=t.googLocalAddress.split(":"),e.localAddress=n[0],e.localPort=Number(n[1])),e.localAddress&&(e.localFamily=e.localAddress.includes(":")?"IPv6":"IPv4");var r=i[t.remoteCandidateId];r&&(r.ip||r.address)?(e.remoteAddress=r.ip||r.address,e.remotePort=Number(r.port)):r&&r.ipAddress?(e.remoteAddress=r.ipAddress,e.remotePort=Number(r.portNumber)):"string"==typeof t.googRemoteAddress&&(r=t.googRemoteAddress.split(":"),e.remoteAddress=r[0],e.remotePort=Number(r[1])),e.remoteAddress&&(e.remoteFamily=e.remoteAddress.includes(":")?"IPv6":"IPv4"),e._debug("connect local: %s:%s remote: 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%s",e._pc.signalingState),e.emit("signalingStateChange",e._pc.signalingState))},r.prototype._onIceCandidate=function(e){this.destroyed||(e.candidate&&this.trickle?this.emit("signal",{candidate:{candidate:e.candidate.candidate,sdpMLineIndex:e.candidate.sdpMLineIndex,sdpMid:e.candidate.sdpMid}}):e.candidate||this._iceComplete||(this._iceComplete=!0,this.emit("_iceComplete")),e.candidate&&this._startIceCompleteTimeout())},r.prototype._onChannelMessage=function(t){if(!this.destroyed){var n=t.data;n instanceof ArrayBuffer&&(n=e.from(n)),this.push(n)}},r.prototype._onChannelBufferedAmountLow=function(){if(!this.destroyed&&this._cb){this._debug("ending backpressure: bufferedAmount %d",this._channel.bufferedAmount);var e=this._cb;this._cb=null,e(null)}},r.prototype._onChannelOpen=function(){this._connected||this.destroyed||(this._debug("on channel open"),this._channelReady=!0,this._maybeReady())},r.prototype._onChannelClose=function(){this.destroyed||(this._debug("on channel close"),this.destroy())},r.prototype._onTrack=function(e){var t=this;t.destroyed||e.streams.forEach(function(n){t._debug("on track"),t.emit("track",e.track,n),t._remoteTracks.push({track:e.track,stream:n}),t._remoteStreams.some(function(e){return e.id===n.id})||(t._remoteStreams.push(n),setTimeout(function(){t.emit("stream",n)},0))})},r.prototype._debug=function(){var e=[].slice.call(arguments);e[0]="["+this._id+"] "+e[0],t.apply(null,e)}}).call(this,u({}).Buffer);var Rn,Ln=1,Bn=function(){Ln=Ln+1&65535},Un=function(e){Rn||(Rn=setInterval(Bn,250)).unref&&Rn.unref();var t=4*(e||5),n=[0],r=1,i=Ln-1&65535;return function(e){var s=Ln-i&65535;for(s>t&&(s=t),i=Ln;s--;)r===t&&(r=0),n[r]=n[0===r?t-1:r-1],r++;e&&(n[r-1]+=e);var o=n[r-1],a=n.length<t?0:n[r===t?0:r];return n.length<4?o:4*(o-a)/n.length}},On={};const Mn=/^\[?([^\]]+)\]?:(\d+)$/;let Pn={},Nn=0;(On=function(e){if(1e5===Nn&&On.reset(),!Pn[e]){const t=Mn.exec(e);if(!t)throw new Error(`invalid addr: ${e}`);Pn[e]=[t[1],Number(t[2])],Nn+=1}return Pn[e]}).reset=function(){Pn={},Nn=0};var jn={exports:{}};function Hn(e){let t=e>>3;return e%8!=0&&t++,t}jn.exports=class{constructor(e=0,t){const n=null!=t&&t.grow;this.grow=n&&isFinite(n)&&Hn(n)||n||0,this.buffer="number"==typeof e?new Uint8Array(Hn(e)):e}get(e){const t=e>>3;return t<this.buffer.length&&!!(this.buffer[t]&128>>e%8)}set(e,t=!0){const n=e>>3;if(t){if(this.buffer.length<n+1){const e=Math.max(n+1,Math.min(2*this.buffer.length,this.grow));if(e<=this.grow){const t=new Uint8Array(e);t.set(this.buffer),this.buffer=t}}this.buffer[n]|=128>>e%8}else n<this.buffer.length&&(this.buffer[n]&=~(128>>e%8))}},jn=jn.exports;var Dn=class extends Ze.Writable{constructor(e,t,n={}){if(super(n),!e||!e.put||!e.get)throw new Error("First argument must be an abstract-chunk-store compliant store");if(!(t=Number(t)))throw new Error("Second argument must be a chunk length");this._blockstream=new Qe(t,{zeroPadding:!1}),this._outstandingPuts=0;let r=0;this._blockstream.on("data",t=>{this.destroyed||(this._outstandingPuts+=1,e.put(r,t,()=>{this._outstandingPuts-=1,0===this._outstandingPuts&&"function"==typeof this._finalCb&&(this._finalCb(null),this._finalCb=null)}),r+=1)}).on("error",e=>{this.destroy(e)})}_write(e,t,n){this._blockstream.write(e,t,n)}_final(e){this._blockstream.end(),this._blockstream.once("end",()=>{0===this._outstandingPuts?e(null):this._finalCb=e})}destroy(e){this.destroyed||(this.destroyed=!0,e&&this.emit("error",e),this.emit("close"))}},qn={};(function(e){qn.DEFAULT_ANNOUNCE_PEERS=50,qn.binaryToHex=function(t){return"string"!=typeof t&&(t=String(t)),e.from(t,"binary").toString("hex")},qn.hexToBinary=function(t){return"string"!=typeof t&&(t=String(t)),e.from(t,"hex").toString("binary")},Object.assign(qn,te)}).call(this,u({}).Buffer);var Fn={};(function(e,t){const n=jt("simple-websocket"),r="function"!=typeof te?WebSocket:te,i=65536;class s extends Ze.Duplex{constructor(t={}){if("string"==typeof t&&(t={url:t}),super(t=Object.assign({allowHalfOpen:!1},t)),null==t.url&&null==t.socket)throw new Error("Missing required `url` or `socket` option");if(null!=t.url&&null!=t.socket)throw new Error("Must specify either `url` or `socket` option, not both");if(this._id=In(4).toString("hex").slice(0,7),this._debug("new websocket: %o",t),this.connected=!1,this.destroyed=!1,this._chunk=null,this._cb=null,this._interval=null,t.socket)this.url=t.socket.url,this._ws=t.socket,this.connected=t.socket.readyState===r.OPEN;else{this.url=t.url;try{this._ws="function"==typeof te?new r(t.url,t):new r(t.url)}catch(fi){return void e.nextTick(()=>this.destroy(fi))}}this._ws.binaryType="arraybuffer",this._ws.onopen=(()=>{this._onOpen()}),this._ws.onmessage=(e=>{this._onMessage(e)}),this._ws.onclose=(()=>{this._onClose()}),this._ws.onerror=(()=>{this.destroy(new Error("connection error to "+this.url))}),this._onFinishBound=(()=>{this._onFinish()}),this.once("finish",this._onFinishBound)}send(e){this._ws.send(e)}destroy(e){this._destroy(e,()=>{})}_destroy(e,t){if(!this.destroyed){if(this._debug("destroy (error: %s)",e&&(e.message||e)),this.readable=this.writable=!1,this._readableState.ended||this.push(null),this._writableState.finished||this.end(),this.connected=!1,this.destroyed=!0,clearInterval(this._interval),this._interval=null,this._chunk=null,this._cb=null,this._onFinishBound&&this.removeListener("finish",this._onFinishBound),this._onFinishBound=null,this._ws){const t=this._ws,n=()=>{t.onclose=null};if(t.readyState===r.CLOSED)n();else try{t.onclose=n,t.close()}catch(e){n()}t.onopen=null,t.onmessage=null,t.onerror=(()=>{})}if(this._ws=null,e){if("undefined"!=typeof DOMException&&e instanceof DOMException){const t=e.code;(e=new Error(e.message)).code=t}this.emit("error",e)}this.emit("close"),t()}}_read(){}_write(e,t,n){if(this.destroyed)return n(new Error("cannot write after socket is destroyed"));if(this.connected){try{this.send(e)}catch(fi){return this.destroy(fi)}"function"!=typeof te&&this._ws.bufferedAmount>i?(this._debug("start backpressure: bufferedAmount %d",this._ws.bufferedAmount),this._cb=n):n(null)}else this._debug("write before connect"),this._chunk=e,this._cb=n}_onFinish(){if(this.destroyed)return;const e=()=>{setTimeout(()=>this.destroy(),1e3)};this.connected?e():this.once("connect",e)}_onMessage(e){if(this.destroyed)return;let n=e.data;n instanceof ArrayBuffer&&(n=t.from(n)),this.push(n)}_onOpen(){if(!this.connected&&!this.destroyed){if(this.connected=!0,this._chunk){try{this.send(this._chunk)}catch(fi){return this.destroy(fi)}this._chunk=null,this._debug('sent chunk from "write before connect"');const e=this._cb;this._cb=null,e(null)}"function"!=typeof te&&(this._interval=setInterval(()=>this._onInterval(),150),this._interval.unref&&this._interval.unref()),this._debug("connect"),this.emit("connect")}}_onInterval(){if(!this._cb||!this._ws||this._ws.bufferedAmount>i)return;this._debug("ending backpressure: bufferedAmount %d",this._ws.bufferedAmount);const e=this._cb;this._cb=null,e(null)}_onClose(){this.destroyed||(this._debug("on close"),this.destroy())}_debug(){const e=[].slice.call(arguments);e[0]="["+this._id+"] "+e[0],n.apply(null,e)}}s.WEBSOCKET_SUPPORT=!!r,Fn=s}).call(this,ce,u({}).Buffer);var Wn=class extends d{constructor(e,t){super(),this.client=e,this.announceUrl=t,this.interval=null,this.destroyed=!1}setInterval(e){null==e&&(e=this.DEFAULT_ANNOUNCE_INTERVAL),clearInterval(this.interval),e&&(this.interval=setInterval(()=>{this.announce(this.client._defaultAnnounceOpts())},e),this.interval.unref&&this.interval.unref())}},zn={};const $n=jt("bittorrent-tracker:websocket-tracker"),Vn={},Gn=1e4,Kn=18e5,Yn=12e4,Jn=5e4;class Xn extends Wn{constructor(e,t,n){super(e,t),$n("new websocket tracker %s",t),this.peers={},this.socket=null,this.reconnecting=!1,this.retries=0,this.reconnectTimer=null,this.expectingResponse=!1,this._openSocket()}announce(e){if(this.destroyed||this.reconnecting)return;if(!this.socket.connected)return void this.socket.once("connect",()=>{this.announce(e)});const t=Object.assign({},e,{action:"announce",info_hash:this.client._infoHashBinary,peer_id:this.client._peerIdBinary});if(this._trackerId&&(t.trackerid=this._trackerId),"stopped"===e.event||"completed"===e.event)this._send(t);else{const n=Math.min(e.numwant,10);this._generateOffers(n,e=>{t.numwant=n,t.offers=e,this._send(t)})}}scrape(e){if(this.destroyed||this.reconnecting)return;if(!this.socket.connected)return void this.socket.once("connect",()=>{this.scrape(e)});const t={action:"scrape",info_hash:Array.isArray(e.infoHash)&&e.infoHash.length>0?e.infoHash.map(e=>e.toString("binary")):e.infoHash&&e.infoHash.toString("binary")||this.client._infoHashBinary};this._send(t)}destroy(e=Zn){if(this.destroyed)return e(null);this.destroyed=!0,clearInterval(this.interval),clearTimeout(this.reconnectTimer);for(const i in this.peers){const e=this.peers[i];clearTimeout(e.trackerTimeout),e.destroy()}if(this.peers=null,this.socket&&(this.socket.removeListener("connect",this._onSocketConnectBound),this.socket.removeListener("data",this._onSocketDataBound),this.socket.removeListener("close",this._onSocketCloseBound),this.socket.removeListener("error",this._onSocketErrorBound),this.socket=null),this._onSocketConnectBound=null,this._onSocketErrorBound=null,this._onSocketDataBound=null,this._onSocketCloseBound=null,Vn[this.announceUrl]&&(Vn[this.announceUrl].consumers-=1),Vn[this.announceUrl].consumers>0)return e();let t=Vn[this.announceUrl];if(delete Vn[this.announceUrl],t.on("error",Zn),t.once("close",e),!this.expectingResponse)return r();var n=setTimeout(r,qn.DESTROY_TIMEOUT);function r(){n&&(clearTimeout(n),n=null),t.removeListener("data",r),t.destroy(),t=null}t.once("data",r)}_openSocket(){this.destroyed=!1,this.peers||(this.peers={}),this._onSocketConnectBound=(()=>{this._onSocketConnect()}),this._onSocketErrorBound=(e=>{this._onSocketError(e)}),this._onSocketDataBound=(e=>{this._onSocketData(e)}),this._onSocketCloseBound=(()=>{this._onSocketClose()}),this.socket=Vn[this.announceUrl],this.socket?(Vn[this.announceUrl].consumers+=1,this.socket.connected&&this._onSocketConnectBound()):(this.socket=Vn[this.announceUrl]=new Fn(this.announceUrl),this.socket.consumers=1,this.socket.once("connect",this._onSocketConnectBound)),this.socket.on("data",this._onSocketDataBound),this.socket.once("close",this._onSocketCloseBound),this.socket.once("error",this._onSocketErrorBound)}_onSocketConnect(){this.destroyed||this.reconnecting&&(this.reconnecting=!1,this.retries=0,this.announce(this.client._defaultAnnounceOpts()))}_onSocketData(e){if(!this.destroyed){this.expectingResponse=!1;try{e=JSON.parse(e)}catch(fi){return void this.client.emit("warning",new Error("Invalid tracker response"))}"announce"===e.action?this._onAnnounceResponse(e):"scrape"===e.action?this._onScrapeResponse(e):this._onSocketError(new Error(`invalid action in WS response: ${e.action}`))}}_onAnnounceResponse(e){if(e.info_hash!==this.client._infoHashBinary)return void $n("ignoring websocket data from %s for %s (looking for %s: reused socket)",this.announceUrl,qn.binaryToHex(e.info_hash),this.client.infoHash);if(e.peer_id&&e.peer_id===this.client._peerIdBinary)return;$n("received %s from %s for %s",JSON.stringify(e),this.announceUrl,this.client.infoHash);const t=e["failure reason"];if(t)return this.client.emit("warning",new Error(t));const n=e["warning message"];n&&this.client.emit("warning",new Error(n));const r=e.interval||e["min interval"];r&&this.setInterval(1e3*r);const i=e["tracker id"];if(i&&(this._trackerId=i),null!=e.complete){const t=Object.assign({},e,{announce:this.announceUrl,infoHash:qn.binaryToHex(e.info_hash)});this.client.emit("update",t)}let s;if(e.offer&&e.peer_id&&($n("creating peer (from remote offer)"),(s=this._createPeer()).id=qn.binaryToHex(e.peer_id),s.once("signal",t=>{const n={action:"announce",info_hash:this.client._infoHashBinary,peer_id:this.client._peerIdBinary,to_peer_id:e.peer_id,answer:t,offer_id:e.offer_id};this._trackerId&&(n.trackerid=this._trackerId),this._send(n)}),s.signal(e.offer),this.client.emit("peer",s)),e.answer&&e.peer_id){const t=qn.binaryToHex(e.offer_id);(s=this.peers[t])?(s.id=qn.binaryToHex(e.peer_id),s.signal(e.answer),this.client.emit("peer",s),clearTimeout(s.trackerTimeout),s.trackerTimeout=null,delete this.peers[t]):$n(`got unexpected answer: ${JSON.stringify(e.answer)}`)}}_onScrapeResponse(e){e=e.files||{};const t=Object.keys(e);0!==t.length?t.forEach(t=>{const n=Object.assign(e[t],{announce:this.announceUrl,infoHash:qn.binaryToHex(t)});this.client.emit("scrape",n)}):this.client.emit("warning",new Error("invalid scrape response"))}_onSocketClose(){this.destroyed||(this.destroy(),this._startReconnectTimer())}_onSocketError(e){this.destroyed||(this.destroy(),this.client.emit("warning",e),this._startReconnectTimer())}_startReconnectTimer(){const e=Math.floor(Math.random()*Yn)+Math.min(Math.pow(2,this.retries)*Gn,Kn);this.reconnecting=!0,clearTimeout(this.reconnectTimer),this.reconnectTimer=setTimeout(()=>{this.retries++,this._openSocket()},e),this.reconnectTimer.unref&&this.reconnectTimer.unref(),$n("reconnecting socket in %s ms",e)}_send(e){if(this.destroyed)return;this.expectingResponse=!0;const t=JSON.stringify(e);$n("send %s",t),this.socket.send(t)}_generateOffers(e,t){const n=this,r=[];$n("generating %s offers",e);for(let o=0;o<e;++o)i();function i(){const e=In(20).toString("hex");$n("creating peer (from _generateOffers)");const t=n.peers[e]=n._createPeer({initiator:!0});t.once("signal",t=>{r.push({offer:t,offer_id:qn.hexToBinary(e)}),s()}),t.trackerTimeout=setTimeout(()=>{$n("tracker timeout: destroying peer"),t.trackerTimeout=null,delete n.peers[e],t.destroy()},Jn),t.trackerTimeout.unref&&t.trackerTimeout.unref()}function s(){r.length===e&&($n("generated %s offers",e),t(r))}s()}_createPeer(e){const t=this;e=Object.assign({trickle:!1,config:t.client._rtcConfig,wrtc:t.client._wrtc},e);const n=new An(e);return n.once("error",r),n.once("connect",function e(){n.removeListener("error",r),n.removeListener("connect",e)}),n;function r(e){t.client.emit("warning",new Error(`Connection error: ${e.message}`)),n.destroy()}}}function Zn(){}Xn.prototype.DEFAULT_ANNOUNCE_INTERVAL=3e4,Xn._socketPool=Vn,zn=Xn;var Qn={};(function(e,t){const n=jt("bittorrent-tracker:client");class r extends d{constructor(r={}){if(super(),!r.peerId)throw new Error("Option `peerId` is required");if(!r.infoHash)throw new Error("Option `infoHash` is required");if(!r.announce)throw new Error("Option `announce` is required");if(!e.browser&&!r.port)throw new Error("Option `port` is required");this.peerId="string"==typeof r.peerId?r.peerId:r.peerId.toString("hex"),this._peerIdBuffer=t.from(this.peerId,"hex"),this._peerIdBinary=this._peerIdBuffer.toString("binary"),this.infoHash="string"==typeof r.infoHash?r.infoHash.toLowerCase():r.infoHash.toString("hex"),this._infoHashBuffer=t.from(this.infoHash,"hex"),this._infoHashBinary=this._infoHashBuffer.toString("binary"),n("new client %s",this.infoHash),this.destroyed=!1,this._port=r.port,this._getAnnounceOpts=r.getAnnounceOpts,this._rtcConfig=r.rtcConfig,this._userAgent=r.userAgent,this._wrtc="function"==typeof r.wrtc?r.wrtc():r.wrtc;let i="string"==typeof r.announce?[r.announce]:null==r.announce?[]:r.announce;i=i.map(e=>("/"===(e=e.toString())[e.length-1]&&(e=e.substring(0,e.length-1)),e)),i=Sn(i);const s=!1!==this._wrtc&&(!!this._wrtc||An.WEBRTC_SUPPORT),o=t=>{e.nextTick(()=>{this.emit("warning",t)})};this._trackers=i.map(e=>{let t;try{t=new URL(e)}catch(fi){return o(new Error(`Invalid tracker URL: ${e}`)),null}const n=t.port;if(n<0||n>65535)return o(new Error(`Invalid tracker port: ${e}`)),null;const r=t.protocol;return"http:"!==r&&"https:"!==r||"function"!=typeof te?"udp:"===r&&"function"==typeof te?new te(this,e):"ws:"!==r&&"wss:"!==r||!s?(o(new Error(`Unsupported tracker protocol: ${e}`)),null):"ws:"===r&&"undefined"!=typeof window&&"https:"===window.location.protocol?(o(new Error(`Unsupported tracker protocol: ${e}`)),null):new zn(this,e):new te(this,e)}).filter(Boolean)}start(e){(e=this._defaultAnnounceOpts(e)).event="started",n("send `start` %o",e),this._announce(e),this._trackers.forEach(e=>{e.setInterval()})}stop(e){(e=this._defaultAnnounceOpts(e)).event="stopped",n("send `stop` %o",e),this._announce(e)}complete(e){e||(e={}),(e=this._defaultAnnounceOpts(e)).event="completed",n("send `complete` %o",e),this._announce(e)}update(e){(e=this._defaultAnnounceOpts(e)).event&&delete e.event,n("send `update` %o",e),this._announce(e)}_announce(e){this._trackers.forEach(t=>{t.announce(e)})}scrape(e){n("send `scrape`"),e||(e={}),this._trackers.forEach(t=>{t.scrape(e)})}setInterval(e){n("setInterval %d",e),this._trackers.forEach(t=>{t.setInterval(e)})}destroy(e){if(this.destroyed)return;this.destroyed=!0,n("destroy");const t=this._trackers.map(e=>t=>{e.destroy(t)});kt(t,e),this._trackers=[],this._getAnnounceOpts=null}_defaultAnnounceOpts(e={}){return null==e.numwant&&(e.numwant=qn.DEFAULT_ANNOUNCE_PEERS),null==e.uploaded&&(e.uploaded=0),null==e.downloaded&&(e.downloaded=0),this._getAnnounceOpts&&(e=Object.assign({},e,this._getAnnounceOpts())),e}}r.scrape=((e,n)=>{if(n=wt(n),!e.infoHash)throw new Error("Option `infoHash` is required");if(!e.announce)throw new Error("Option `announce` is required");const i=Object.assign({},e,{infoHash:Array.isArray(e.infoHash)?e.infoHash[0]:e.infoHash,peerId:t.from("01234567890123456789"),port:6881}),s=new r(i);s.once("error",n),s.once("warning",n);let o=Array.isArray(e.infoHash)?e.infoHash.length:1;const a={};return s.on("scrape",e=>{if(o-=1,a[e.infoHash]=e,0===o){s.destroy();const e=Object.keys(a);1===e.length?n(null,a[e[0]]):n(null,a)}}),e.infoHash=Array.isArray(e.infoHash)?e.infoHash.map(e=>t.from(e,"hex")):t.from(e.infoHash,"hex"),s.scrape({infoHash:e.infoHash}),s}),Qn=r}).call(this,ce,u({}).Buffer);var er={};(function(e){const t=jt("torrent-discovery"),n=d.EventEmitter;er=class extends n{constructor(t){if(super(),!t.peerId)throw new Error("Option `peerId` is required");if(!t.infoHash)throw new Error("Option `infoHash` is required");if(!e.browser&&!t.port)throw new Error("Option `port` is required");this.peerId="string"==typeof t.peerId?t.peerId:t.peerId.toString("hex"),this.infoHash="string"==typeof t.infoHash?t.infoHash.toLowerCase():t.infoHash.toString("hex"),this._port=t.port,this._userAgent=t.userAgent,this.destroyed=!1,this._announce=t.announce||[],this._intervalMs=t.intervalMs||9e5,this._trackerOpts=null,this._dhtAnnouncing=!1,this._dhtTimeout=!1,this._internalDHT=!1,this._onWarning=(e=>{this.emit("warning",e)}),this._onError=(e=>{this.emit("error",e)}),this._onDHTPeer=((e,t)=>{t.toString("hex")===this.infoHash&&this.emit("peer",`${e.host}:${e.port}`,"dht")}),this._onTrackerPeer=(e=>{this.emit("peer",e,"tracker")}),this._onTrackerAnnounce=(()=>{this.emit("trackerAnnounce")});const n=(e,t)=>{const n=new te(t);return n.on("warning",this._onWarning),n.on("error",this._onError),n.listen(e),this._internalDHT=!0,n};!1===t.tracker?this.tracker=null:t.tracker&&"object"==typeof t.tracker?(this._trackerOpts=Object.assign({},t.tracker),this.tracker=this._createTracker()):this.tracker=this._createTracker(),!1===t.dht||"function"!=typeof te?this.dht=null:t.dht&&"function"==typeof t.dht.addNode?this.dht=t.dht:t.dht&&"object"==typeof t.dht?this.dht=n(t.dhtPort,t.dht):this.dht=n(t.dhtPort),this.dht&&(this.dht.on("peer",this._onDHTPeer),this._dhtAnnounce())}updatePort(e){e!==this._port&&(this._port=e,this.dht&&this._dhtAnnounce(),this.tracker&&(this.tracker.stop(),this.tracker.destroy(()=>{this.tracker=this._createTracker()})))}complete(e){this.tracker&&this.tracker.complete(e)}destroy(e){if(this.destroyed)return;this.destroyed=!0,clearTimeout(this._dhtTimeout);const t=[];this.tracker&&(this.tracker.stop(),this.tracker.removeListener("warning",this._onWarning),this.tracker.removeListener("error",this._onError),this.tracker.removeListener("peer",this._onTrackerPeer),this.tracker.removeListener("update",this._onTrackerAnnounce),t.push(e=>{this.tracker.destroy(e)})),this.dht&&this.dht.removeListener("peer",this._onDHTPeer),this._internalDHT&&(this.dht.removeListener("warning",this._onWarning),this.dht.removeListener("error",this._onError),t.push(e=>{this.dht.destroy(e)})),kt(t,e),this.dht=null,this.tracker=null,this._announce=null}_createTracker(){const e=Object.assign({},this._trackerOpts,{infoHash:this.infoHash,announce:this._announce,peerId:this.peerId,port:this._port,userAgent:this._userAgent}),t=new Qn(e);return t.on("warning",this._onWarning),t.on("error",this._onError),t.on("peer",this._onTrackerPeer),t.on("update",this._onTrackerAnnounce),t.setInterval(this._intervalMs),t.start(),t}_dhtAnnounce(){this._dhtAnnouncing||(t("dht 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e=this._fileStream=this._file.createReadStream({start:t});this._tracks.forEach(n=>{n.inStream=new Lr(t,{highWaterMark:1e7}),e.pipe(n.inStream)})}return this._tracks.map(e=>e.outStream)}_findSampleBefore(e,t){const n=this._tracks[e],r=Math.floor(n.timeScale*t);let i=function(e,t,n,r,i){var s,o;if(void 0===r)r=0;else if((r|=0)<0||r>=e.length)throw new RangeError("invalid lower bound");if(void 0===i)i=e.length-1;else if((i|=0)<r||i>=e.length)throw new RangeError("invalid upper bound");for(;r<=i;)if((o=+n(e[s=r+(i-r>>>1)],t,s,e))<0)r=s+1;else{if(!(o>0))return s;i=s-1}return~r}(n.samples,r,(e,t)=>e.dts+e.presentationOffset-t);for(-1===i?i=0:i<0&&(i=-i-2);!n.samples[i].sync;)i--;return i}_generateFragment(e,t){const n=this._tracks[e];let r;if((r=void 0!==t?this._findSampleBefore(e,t):n.currSample)>=n.samples.length)return null;const i=n.samples[r].dts;let s=0;const o=[];for(var a=r;a<n.samples.length;a++){const e=n.samples[a];if(e.sync&&e.dts-i>=1*n.timeScale)break;s+=e.size;const 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fr(t),this._waitingFired=!1,this._trackMeta=null,this._file=e,this._tracks=null,"none"!==this._elem.preload&&this._createMuxer(),this._onError=(()=>{this.detailedError=this._elemWrapper.detailedError,this.destroy()}),this._onWaiting=(()=>{this._waitingFired=!0,this._muxer?this._tracks&&this._pump():this._createMuxer()}),t.autoplay&&(t.preload="auto"),t.addEventListener("waiting",this._onWaiting),t.addEventListener("error",this._onError)}Or.prototype={_createMuxer(){this._muxer=new Br(this._file),this._muxer.on("ready",e=>{this._tracks=e.map(e=>{const t=this._elemWrapper.createWriteStream(e.mime);t.on("error",e=>{this._elemWrapper.error(e)});const n={muxed:null,mediaSource:t,initFlushed:!1,onInitFlushed:null};return t.write(e.init,e=>{n.initFlushed=!0,n.onInitFlushed&&n.onInitFlushed(e)}),n}),(this._waitingFired||"auto"===this._elem.preload)&&this._pump()}),this._muxer.on("error",e=>{this._elemWrapper.error(e)})},_pump(){const 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extends Ze.Readable{constructor(e,t){super(t),this.destroyed=!1,this._torrent=e._torrent;const n=t&&t.start||0,r=t&&t.end&&t.end<e.length?t.end:e.length-1,i=e._torrent.pieceLength;this._startPiece=(n+e.offset)/i|0,this._endPiece=(r+e.offset)/i|0,this._piece=this._startPiece,this._offset=n+e.offset-this._startPiece*i,this._missing=r-n+1,this._reading=!1,this._notifying=!1,this._criticalLength=Math.min(1048576/i|0,2)}_read(){this._reading||(this._reading=!0,this._notify())}_notify(){if(!this._reading||0===this._missing)return;if(!this._torrent.bitfield.get(this._piece))return this._torrent.critical(this._piece,this._piece+this._criticalLength);if(this._notifying)return;if(this._notifying=!0,this._torrent.destroyed)return this._destroy(new Error("Torrent removed"));const e=this._piece;this._torrent.store.get(e,(t,n)=>{if(this._notifying=!1,!this.destroyed){if(Zr("read %s (length %s) (err %s)",e,n.length,t&&t.message),t)return this._destroy(t);this._offset&&(n=n.slice(this._offset),this._offset=0),this._missing<n.length&&(n=n.slice(0,this._missing)),this._missing-=n.length,Zr("pushing buffer of length %s",n.length),this._reading=!1,this.push(n),0===this._missing&&this.push(null)}}),this._piece+=1}destroy(e){this._destroy(null,e)}_destroy(e,t){this.destroyed||(this.destroyed=!0,this._torrent.destroyed||this._torrent.deselect(this._startPiece,this._endPiece,!0),e&&this.emit("error",e),this.emit("close"),t&&t())}},ei={};(function(e){const{EventEmitter:t}=d,{PassThrough:n}=Ze;ei=class extends t{constructor(e,t){super(),this._torrent=e,this._destroyed=!1,this.name=t.name,this.path=t.path,this.length=t.length,this.offset=t.offset,this.done=!1;const n=t.offset,r=n+t.length-1;this._startPiece=n/this._torrent.pieceLength|0,this._endPiece=r/this._torrent.pieceLength|0,0===this.length&&(this.done=!0,this.emit("done"))}get downloaded(){if(!this._torrent.bitfield)return 0;const{pieces:e,bitfield:t,pieceLength:n}=this._torrent,{_startPiece:r,_endPiece:i}=this,s=e[r];let o=t.get(r)?n-this.offset%n:Math.max(s.length-s.missing-this.offset,0);for(let a=r+1;a<=i;++a)if(t.get(a))o+=n;else{const t=e[a];o+=t.length-t.missing}return Math.min(o,this.length)}get progress(){return this.length?this.downloaded/this.length:0}select(e){0!==this.length&&this._torrent.select(this._startPiece,this._endPiece,e)}deselect(){0!==this.length&&this._torrent.deselect(this._startPiece,this._endPiece,!1)}createReadStream(t){if(0===this.length){const t=new n;return e.nextTick(()=>{t.end()}),t}const r=new Qr(this,t);return this._torrent.select(r._startPiece,r._endPiece,!0,()=>{r._notify()}),ar(r,()=>{this._destroyed||this._torrent.destroyed||this._torrent.deselect(r._startPiece,r._endPiece,!0)}),r}getBuffer(e){Xr(this.createReadStream(),this.length,e)}getBlob(e){if("undefined"==typeof window)throw new Error("browser-only method");yr(this.createReadStream(),this._getMimeType()).then(t=>e(null,t),t=>e(t))}getBlobURL(e){if("undefined"==typeof window)throw new Error("browser-only method");br(this.createReadStream(),this._getMimeType()).then(t=>e(null,t),t=>e(t))}appendTo(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");Mr.append(this,e,t,n)}renderTo(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");Mr.render(this,e,t,n)}_getMimeType(){return Mr.mime[et.extname(this.name).toLowerCase()]}_destroy(){this._destroyed=!0,this._torrent=null}}}).call(this,ce);var ti=function(e,t){if(!(t>=e.length||t<0)){var n=e.pop();if(t<e.length){var r=e[t];return e[t]=n,r}return n}},ni={};(function(e){const t=jt("bittorrent-protocol"),n=e.from("\x13BitTorrent protocol"),r=e.from([0,0,0,0]),i=e.from([0,0,0,1,0]),s=e.from([0,0,0,1,1]),o=e.from([0,0,0,1,2]),a=e.from([0,0,0,1,3]),h=[0,0,0,0,0,0,0,0],c=[0,0,0,3,9,0,0];class u{constructor(e,t,n,r){this.piece=e,this.offset=t,this.length=n,this.callback=r}}ni=class extends Ze.Duplex{constructor(){super(),this._debugId=In(4).toString("hex"),this._debug("new wire"),this.peerId=null,this.peerIdBuffer=null,this.type=null,this.amChoking=!0,this.amInterested=!1,this.peerChoking=!0,this.peerInterested=!1,this.peerPieces=new jn(0,{grow:4e5}),this.peerExtensions={},this.requests=[],this.peerRequests=[],this.extendedMapping={},this.peerExtendedMapping={},this.extendedHandshake={},this.peerExtendedHandshake={},this._ext={},this._nextExt=1,this.uploaded=0,this.downloaded=0,this.uploadSpeed=Un(),this.downloadSpeed=Un(),this._keepAliveInterval=null,this._timeout=null,this._timeoutMs=0,this.destroyed=!1,this._finished=!1,this._parserSize=0,this._parser=null,this._buffer=[],this._bufferSize=0,this.on("finish",this._onFinish),this._parseHandshake()}setKeepAlive(e){this._debug("setKeepAlive %s",e),clearInterval(this._keepAliveInterval),!1!==e&&(this._keepAliveInterval=setInterval(()=>{this.keepAlive()},55e3))}setTimeout(e,t){this._debug("setTimeout ms=%d unref=%s",e,t),this._clearTimeout(),this._timeoutMs=e,this._timeoutUnref=!!t,this._updateTimeout()}destroy(){this.destroyed||(this.destroyed=!0,this._debug("destroy"),this.emit("close"),this.end())}end(...e){this._debug("end"),this._onUninterested(),this._onChoke(),super.end(...e)}use(e){const t=e.prototype.name;if(!t)throw new Error('Extension class requires a "name" property on the prototype');this._debug("use extension.name=%s",t);const n=this._nextExt,r=new e(this);function i(){}"function"!=typeof r.onHandshake&&(r.onHandshake=i),"function"!=typeof r.onExtendedHandshake&&(r.onExtendedHandshake=i),"function"!=typeof r.onMessage&&(r.onMessage=i),this.extendedMapping[n]=t,this._ext[t]=r,this[t]=r,this._nextExt+=1}keepAlive(){this._debug("keep-alive"),this._push(r)}handshake(t,r,i){let s,o;if("string"==typeof t?(t=t.toLowerCase(),s=e.from(t,"hex")):t=(s=t).toString("hex"),"string"==typeof r?o=e.from(r,"hex"):r=(o=r).toString("hex"),20!==s.length||20!==o.length)throw new Error("infoHash and peerId MUST have length 20");this._debug("handshake i=%s p=%s exts=%o",t,r,i);const a=e.from(h);a[5]|=16,i&&i.dht&&(a[7]|=1),this._push(e.concat([n,a,s,o])),this._handshakeSent=!0,this.peerExtensions.extended&&!this._extendedHandshakeSent&&this._sendExtendedHandshake()}_sendExtendedHandshake(){const e=Object.assign({},this.extendedHandshake);e.m={};for(const t in this.extendedMapping){const n=this.extendedMapping[t];e.m[n]=Number(t)}this.extended(0,Z.encode(e)),this._extendedHandshakeSent=!0}choke(){if(!this.amChoking){for(this.amChoking=!0,this._debug("choke");this.peerRequests.length;)this.peerRequests.pop();this._push(i)}}unchoke(){this.amChoking&&(this.amChoking=!1,this._debug("unchoke"),this._push(s))}interested(){this.amInterested||(this.amInterested=!0,this._debug("interested"),this._push(o))}uninterested(){this.amInterested&&(this.amInterested=!1,this._debug("uninterested"),this._push(a))}have(e){this._debug("have %d",e),this._message(4,[e],null)}bitfield(t){this._debug("bitfield"),e.isBuffer(t)||(t=t.buffer),this._message(5,[],t)}request(e,t,n,r){return r||(r=(()=>{})),this._finished?r(new Error("wire is closed")):this.peerChoking?r(new Error("peer is choking")):(this._debug("request index=%d offset=%d length=%d",e,t,n),this.requests.push(new u(e,t,n,r)),this._updateTimeout(),void this._message(6,[e,t,n],null))}piece(e,t,n){this._debug("piece index=%d offset=%d",e,t),this.uploaded+=n.length,this.uploadSpeed(n.length),this.emit("upload",n.length),this._message(7,[e,t],n)}cancel(e,t,n){this._debug("cancel index=%d offset=%d length=%d",e,t,n),this._callback(this._pull(this.requests,e,t,n),new Error("request was cancelled"),null),this._message(8,[e,t,n],null)}port(t){this._debug("port %d",t);const n=e.from(c);n.writeUInt16BE(t,5),this._push(n)}extended(t,n){if(this._debug("extended ext=%s",t),"string"==typeof t&&this.peerExtendedMapping[t]&&(t=this.peerExtendedMapping[t]),"number"!=typeof t)throw new Error(`Unrecognized extension: ${t}`);{const r=e.from([t]),i=e.isBuffer(n)?n:Z.encode(n);this._message(20,[],e.concat([r,i]))}}_read(){}_message(t,n,r){const i=r?r.length:0,s=e.allocUnsafe(5+4*n.length);s.writeUInt32BE(s.length+i-4,0),s[4]=t;for(let e=0;e<n.length;e++)s.writeUInt32BE(n[e],5+4*e);this._push(s),r&&this._push(r)}_push(e){if(!this._finished)return this.push(e)}_onKeepAlive(){this._debug("got keep-alive"),this.emit("keep-alive")}_onHandshake(e,t,n){const r=e.toString("hex"),i=t.toString("hex");let s;for(s in this._debug("got handshake i=%s p=%s exts=%o",r,i,n),this.peerId=i,this.peerIdBuffer=t,this.peerExtensions=n,this.emit("handshake",r,i,n),this._ext)this._ext[s].onHandshake(r,i,n);n.extended&&this._handshakeSent&&!this._extendedHandshakeSent&&this._sendExtendedHandshake()}_onChoke(){for(this.peerChoking=!0,this._debug("got choke"),this.emit("choke");this.requests.length;)this._callback(this.requests.pop(),new Error("peer is choking"),null)}_onUnchoke(){this.peerChoking=!1,this._debug("got unchoke"),this.emit("unchoke")}_onInterested(){this.peerInterested=!0,this._debug("got interested"),this.emit("interested")}_onUninterested(){this.peerInterested=!1,this._debug("got uninterested"),this.emit("uninterested")}_onHave(e){this.peerPieces.get(e)||(this._debug("got have %d",e),this.peerPieces.set(e,!0),this.emit("have",e))}_onBitField(e){this.peerPieces=new jn(e),this._debug("got bitfield"),this.emit("bitfield",this.peerPieces)}_onRequest(e,t,n){if(this.amChoking)return;this._debug("got request index=%d offset=%d length=%d",e,t,n);const r=(r,s)=>{if(i===this._pull(this.peerRequests,e,t,n))return r?this._debug("error satisfying request index=%d offset=%d length=%d (%s)",e,t,n,r.message):void this.piece(e,t,s)};var i=new u(e,t,n,r);this.peerRequests.push(i),this.emit("request",e,t,n,r)}_onPiece(e,t,n){this._debug("got piece index=%d offset=%d",e,t),this._callback(this._pull(this.requests,e,t,n.length),null,n),this.downloaded+=n.length,this.downloadSpeed(n.length),this.emit("download",n.length),this.emit("piece",e,t,n)}_onCancel(e,t,n){this._debug("got cancel index=%d offset=%d length=%d",e,t,n),this._pull(this.peerRequests,e,t,n),this.emit("cancel",e,t,n)}_onPort(e){this._debug("got port %d",e),this.emit("port",e)}_onExtended(e,t){if(0===e){let e,n;try{e=Z.decode(t)}catch(fi){this._debug("ignoring invalid extended handshake: %s",fi.message||fi)}if(!e)return;if(this.peerExtendedHandshake=e,"object"==typeof e.m)for(n in e.m)this.peerExtendedMapping[n]=Number(e.m[n].toString());for(n in this._ext)this.peerExtendedMapping[n]&&this._ext[n].onExtendedHandshake(this.peerExtendedHandshake);this._debug("got extended handshake"),this.emit("extended","handshake",this.peerExtendedHandshake)}else this.extendedMapping[e]&&(e=this.extendedMapping[e],this._ext[e]&&this._ext[e].onMessage(t)),this._debug("got extended message ext=%s",e),this.emit("extended",e,t)}_onTimeout(){this._debug("request timed out"),this._callback(this.requests.shift(),new Error("request has timed out"),null),this.emit("timeout")}_write(t,n,r){for(this._bufferSize+=t.length,this._buffer.push(t);this._bufferSize>=this._parserSize;){const t=1===this._buffer.length?this._buffer[0]:e.concat(this._buffer);this._bufferSize-=this._parserSize,this._buffer=this._bufferSize?[t.slice(this._parserSize)]:[],this._parser(t.slice(0,this._parserSize))}r(null)}_callback(e,t,n){e&&(this._clearTimeout(),this.peerChoking||this._finished||this._updateTimeout(),e.callback(t,n))}_clearTimeout(){this._timeout&&(clearTimeout(this._timeout),this._timeout=null)}_updateTimeout(){this._timeoutMs&&this.requests.length&&!this._timeout&&(this._timeout=setTimeout(()=>this._onTimeout(),this._timeoutMs),this._timeoutUnref&&this._timeout.unref&&this._timeout.unref())}_parse(e,t){this._parserSize=e,this._parser=t}_onMessageLength(e){const t=e.readUInt32BE(0);t>0?this._parse(t,this._onMessage):(this._onKeepAlive(),this._parse(4,this._onMessageLength))}_onMessage(e){switch(this._parse(4,this._onMessageLength),e[0]){case 0:return this._onChoke();case 1:return this._onUnchoke();case 2:return this._onInterested();case 3:return this._onUninterested();case 4:return this._onHave(e.readUInt32BE(1));case 5:return this._onBitField(e.slice(1));case 6:return this._onRequest(e.readUInt32BE(1),e.readUInt32BE(5),e.readUInt32BE(9));case 7:return this._onPiece(e.readUInt32BE(1),e.readUInt32BE(5),e.slice(9));case 8:return this._onCancel(e.readUInt32BE(1),e.readUInt32BE(5),e.readUInt32BE(9));case 9:return this._onPort(e.readUInt16BE(1));case 20:return this._onExtended(e.readUInt8(1),e.slice(2));default:return this._debug("got unknown message"),this.emit("unknownmessage",e)}}_parseHandshake(){this._parse(1,e=>{const t=e.readUInt8(0);this._parse(t+48,e=>{const n=e.slice(0,t);if("BitTorrent protocol"!==n.toString())return this._debug("Error: wire not speaking BitTorrent protocol (%s)",n.toString()),void this.end();e=e.slice(t),this._onHandshake(e.slice(8,28),e.slice(28,48),{dht:!!(1&e[7]),extended:!!(16&e[5])}),this._parse(4,this._onMessageLength)})})}_onFinish(){for(this._finished=!0,this.push(null);this.read(););for(clearInterval(this._keepAliveInterval),this._parse(Number.MAX_VALUE,()=>{});this.peerRequests.length;)this.peerRequests.pop();for(;this.requests.length;)this._callback(this.requests.pop(),new Error("wire was closed"),null)}_debug(...e){e[0]=`[${this._debugId}] ${e[0]}`,t(...e)}_pull(e,t,n,r){for(let i=0;i<e.length;i++){const s=e[i];if(s.piece===t&&s.offset===n&&s.length===r)return ti(e,i),s}return null}}}).call(this,u({}).Buffer);var ri="0.107.10",ii={};(function(e){const t=jt("webtorrent:webconn"),n=ri;ii=class extends ni{constructor(e,t){super(),this.url=e,this.webPeerId=Lt.sync(e),this._torrent=t,this._init()}_init(){this.setKeepAlive(!0),this.once("handshake",(e,t)=>{if(this.destroyed)return;this.handshake(e,this.webPeerId);const n=this._torrent.pieces.length,r=new jn(n);for(let i=0;i<=n;i++)r.set(i,!0);this.bitfield(r)}),this.once("interested",()=>{t("interested"),this.unchoke()}),this.on("uninterested",()=>{t("uninterested")}),this.on("choke",()=>{t("choke")}),this.on("unchoke",()=>{t("unchoke")}),this.on("bitfield",()=>{t("bitfield")}),this.on("request",(e,n,r,i)=>{t("request pieceIndex=%d offset=%d length=%d",e,n,r),this.httpRequest(e,n,r,i)})}httpRequest(r,i,s,o){const a=r*this._torrent.pieceLength+i,h=a+s-1,c=this._torrent.files;let u;if(c.length<=1)u=[{url:this.url,start:a,end:h}];else{const e=c.filter(e=>e.offset<=h&&e.offset+e.length>a);if(e.length<1)return o(new Error("Could not find file corresponnding to web seed range request"));u=e.map(e=>{const t=e.offset+e.length-1;return{url:this.url+("/"===this.url[this.url.length-1]?"":"/")+e.path,fileOffsetInRange:Math.max(e.offset-a,0),start:Math.max(a-e.offset,0),end:Math.min(t,h-e.offset)}})}let d,l=0,f=!1;u.length>1&&(d=e.alloc(s)),u.forEach(e=>{const a=e.url,h=e.start,c=e.end;t("Requesting url=%s pieceIndex=%d offset=%d length=%d start=%d end=%d",a,r,i,s,h,c);const p={url:a,method:"GET",headers:{"user-agent":`WebTorrent/${n} (https://webtorrent.io)`,range:`bytes=${h}-${c}`}};function g(n,r){if(n.statusCode<200||n.statusCode>=300)return f=!0,o(new Error(`Unexpected HTTP status code ${n.statusCode}`));t("Got data of length %d",r.length),1===u.length?o(null,r):(r.copy(d,e.fileOffsetInRange),++l===u.length&&o(null,d))}vn.concat(p,(e,t,n)=>{if(!f)return e?"undefined"==typeof window||a.startsWith(`${window.location.origin}/`)?(f=!0,o(e)):vn.head(a,(t,n)=>{if(!f){if(t)return f=!0,o(t);if(n.statusCode<200||n.statusCode>=300)return f=!0,o(new Error(`Unexpected HTTP status code ${n.statusCode}`));if(n.url===a)return f=!0,o(e);p.url=n.url,vn.concat(p,(e,t,n)=>{if(!f)return e?(f=!0,o(e)):void g(t,n)})}}):void g(t,n)})})}destroy(){super.destroy(),this._torrent=null}}}).call(this,u({}).Buffer);var si={};const oi=jt("webtorrent:peer"),ai=5e3,hi=25e3,ci=25e3;si.createWebRTCPeer=((e,t)=>{const n=new ui(e.id,"webrtc");return n.conn=e,n.swarm=t,n.conn.connected?n.onConnect():(n.conn.once("connect",()=>{n.onConnect()}),n.conn.once("error",e=>{n.destroy(e)}),n.startConnectTimeout()),n}),si.createTCPOutgoingPeer=((e,t)=>{const n=new ui(e,"tcpOutgoing");return n.addr=e,n.swarm=t,n}),si.createWebSeedPeer=((e,t)=>{const n=new ui(e,"webSeed");return n.swarm=t,n.conn=new ii(e,t),n.onConnect(),n});class ui{constructor(e,t){this.id=e,this.type=t,oi("new %s Peer %s",t,e),this.addr=null,this.conn=null,this.swarm=null,this.wire=null,this.connected=!1,this.destroyed=!1,this.timeout=null,this.retries=0,this.sentHandshake=!1}onConnect(){if(this.destroyed)return;this.connected=!0,oi("Peer %s connected",this.id),clearTimeout(this.connectTimeout);const e=this.conn;e.once("end",()=>{this.destroy()}),e.once("close",()=>{this.destroy()}),e.once("finish",()=>{this.destroy()}),e.once("error",e=>{this.destroy(e)});const t=this.wire=new ni;t.type=this.type,t.once("end",()=>{this.destroy()}),t.once("close",()=>{this.destroy()}),t.once("finish",()=>{this.destroy()}),t.once("error",e=>{this.destroy(e)}),t.once("handshake",(e,t)=>{this.onHandshake(e,t)}),this.startHandshakeTimeout(),e.pipe(t).pipe(e),this.swarm&&!this.sentHandshake&&this.handshake()}onHandshake(e,t){if(!this.swarm)return;if(this.destroyed)return;if(this.swarm.destroyed)return this.destroy(new Error("swarm already destroyed"));if(e!==this.swarm.infoHash)return this.destroy(new Error("unexpected handshake info hash for this swarm"));if(t===this.swarm.peerId)return this.destroy(new Error("refusing to connect to ourselves"));oi("Peer %s got handshake %s",this.id,e),clearTimeout(this.handshakeTimeout),this.retries=0;let n=this.addr;!n&&this.conn.remoteAddress&&this.conn.remotePort&&(n=`${this.conn.remoteAddress}:${this.conn.remotePort}`),this.swarm._onWire(this.wire,n),this.swarm&&!this.swarm.destroyed&&(this.sentHandshake||this.handshake())}handshake(){const e={dht:!this.swarm.private&&!!this.swarm.client.dht};this.wire.handshake(this.swarm.infoHash,this.swarm.client.peerId,e),this.sentHandshake=!0}startConnectTimeout(){clearTimeout(this.connectTimeout),this.connectTimeout=setTimeout(()=>{this.destroy(new Error("connect timeout"))},"webrtc"===this.type?hi:ai),this.connectTimeout.unref&&this.connectTimeout.unref()}startHandshakeTimeout(){clearTimeout(this.handshakeTimeout),this.handshakeTimeout=setTimeout(()=>{this.destroy(new Error("handshake timeout"))},ci),this.handshakeTimeout.unref&&this.handshakeTimeout.unref()}destroy(e){if(this.destroyed)return;this.destroyed=!0,this.connected=!1,oi("destroy %s (error: %s)",this.id,e&&(e.message||e)),clearTimeout(this.connectTimeout),clearTimeout(this.handshakeTimeout);const t=this.swarm,n=this.conn,r=this.wire;this.swarm=null,this.conn=null,this.wire=null,t&&r&&ti(t.wires,t.wires.indexOf(r)),n&&(n.on("error",()=>{}),n.destroy()),r&&r.destroy(),t&&t.removePeer(this.id)}}var di={};(function(e,t){const n=jt("webtorrent:torrent"),r=d.EventEmitter,i=3*ir.BLOCK_LENGTH,s=e.browser?1/0:2,o=[1e3,5e3,15e3],a=`WebTorrent/${ri} (https://webtorrent.io)`;let h;try{h=et.join(ut.statSync("/tmp")&&"/tmp","webtorrent")}catch(fi){h=et.join("function"==typeof te.tmpdir?te.tmpdir():"/","webtorrent")}function c(e,t){return 2+Math.ceil(t*e.downloadSpeed()/ir.BLOCK_LENGTH)}function u(){}di=class extends r{constructor(e,t,n){super(),this._debugId="unknown infohash",this.client=t,this.announce=n.announce,this.urlList=n.urlList,this.path=n.path,this.skipVerify=!!n.skipVerify,this._store=n.store||tr,this._getAnnounceOpts=n.getAnnounceOpts,this.strategy=n.strategy||"sequential",this.maxWebConns=n.maxWebConns||4,this._rechokeNumSlots=!1===n.uploads||0===n.uploads?0:+n.uploads||10,this._rechokeOptimisticWire=null,this._rechokeOptimisticTime=0,this._rechokeIntervalId=null,this.ready=!1,this.destroyed=!1,this.paused=!1,this.done=!1,this.metadata=null,this.store=null,this.files=[],this.pieces=[],this._amInterested=!1,this._selections=[],this._critical=[],this.wires=[],this._queue=[],this._peers={},this._peersLength=0,this.received=0,this.uploaded=0,this._downloadSpeed=Un(),this._uploadSpeed=Un(),this._servers=[],this._xsRequests=[],this._fileModtimes=n.fileModtimes,null!==e&&this._onTorrentId(e),this._debug("new torrent")}get timeRemaining(){return this.done?0:0===this.downloadSpeed?1/0:(this.length-this.downloaded)/this.downloadSpeed*1e3}get downloaded(){if(!this.bitfield)return 0;let e=0;for(let t=0,n=this.pieces.length;t<n;++t)if(this.bitfield.get(t))e+=t===n-1?this.lastPieceLength:this.pieceLength;else{const n=this.pieces[t];e+=n.length-n.missing}return e}get downloadSpeed(){return this._downloadSpeed()}get uploadSpeed(){return this._uploadSpeed()}get progress(){return this.length?this.downloaded/this.length:0}get ratio(){return this.uploaded/(this.received||1)}get numPeers(){return this.wires.length}get torrentFileBlobURL(){if("undefined"==typeof window)throw new Error("browser-only property");return this.torrentFile?URL.createObjectURL(new Blob([this.torrentFile],{type:"application/x-bittorrent"})):null}get _numQueued(){return this._queue.length+(this._peersLength-this._numConns)}get _numConns(){let e=0;for(const t in this._peers)this._peers[t].connected&&(e+=1);return e}get swarm(){return console.warn("WebTorrent: `torrent.swarm` is deprecated. Use `torrent` directly instead."),this}_onTorrentId(t){if(this.destroyed)return;let n;try{n=xn(t)}catch(fi){}n?(this.infoHash=n.infoHash,this._debugId=n.infoHash.toString("hex").substring(0,7),e.nextTick(()=>{this.destroyed||this._onParsedTorrent(n)})):xn.remote(t,(e,t)=>{if(!this.destroyed)return e?this._destroy(e):void this._onParsedTorrent(t)})}_onParsedTorrent(e){if(!this.destroyed){if(this._processParsedTorrent(e),!this.infoHash)return this._destroy(new Error("Malformed torrent data: No info hash"));this.path||(this.path=et.join(h,this.infoHash)),this._rechokeIntervalId=setInterval(()=>{this._rechoke()},1e4),this._rechokeIntervalId.unref&&this._rechokeIntervalId.unref(),this.emit("_infoHash",this.infoHash),this.destroyed||(this.emit("infoHash",this.infoHash),this.destroyed||(this.client.listening?this._onListening():this.client.once("listening",()=>{this._onListening()})))}}_processParsedTorrent(e){this._debugId=e.infoHash.toString("hex").substring(0,7),this.announce&&(e.announce=e.announce.concat(this.announce)),this.client.tracker&&t.WEBTORRENT_ANNOUNCE&&!this.private&&(e.announce=e.announce.concat(t.WEBTORRENT_ANNOUNCE)),this.urlList&&(e.urlList=e.urlList.concat(this.urlList)),Sn(e.announce),Sn(e.urlList),Object.assign(this,e),this.magnetURI=xn.toMagnetURI(e),this.torrentFile=xn.toTorrentFile(e)}_onListening(){this.destroyed||(this.info?this._onMetadata(this):(this.xs&&this._getMetadataFromServer(),this._startDiscovery()))}_startDiscovery(){if(this.discovery||this.destroyed)return;let e=this.client.tracker;e&&(e=Object.assign({},this.client.tracker,{getAnnounceOpts:()=>{const e={uploaded:this.uploaded,downloaded:this.downloaded,left:Math.max(this.length-this.downloaded,0)};return this.client.tracker.getAnnounceOpts&&Object.assign(e,this.client.tracker.getAnnounceOpts()),this._getAnnounceOpts&&Object.assign(e,this._getAnnounceOpts()),e}})),this.discovery=new er({infoHash:this.infoHash,announce:this.announce,peerId:this.client.peerId,dht:!this.private&&this.client.dht,tracker:e,port:this.client.torrentPort,userAgent:a}),this.discovery.on("error",e=>{this._destroy(e)}),this.discovery.on("peer",e=>{"string"==typeof e&&this.done||this.addPeer(e)}),this.discovery.on("trackerAnnounce",()=>{this.emit("trackerAnnounce"),0===this.numPeers&&this.emit("noPeers","tracker")}),this.discovery.on("dhtAnnounce",()=>{this.emit("dhtAnnounce"),0===this.numPeers&&this.emit("noPeers","dht")}),this.discovery.on("warning",e=>{this.emit("warning",e)})}_getMetadataFromServer(){const e=this,t=(Array.isArray(this.xs)?this.xs:[this.xs]).map(t=>n=>{!function(t,n){if(0!==t.indexOf("http://")&&0!==t.indexOf("https://"))return e.emit("warning",new Error(`skipping non-http xs param: ${t}`)),n(null);const r={url:t,method:"GET",headers:{"user-agent":a}};let i;try{i=vn.concat(r,function(r,i,s){if(e.destroyed)return n(null);if(e.metadata)return n(null);if(r)return e.emit("warning",new Error(`http error from xs param: ${t}`)),n(null);if(200!==i.statusCode)return e.emit("warning",new Error(`non-200 status code ${i.statusCode} from xs param: ${t}`)),n(null);let o;try{o=xn(s)}catch(r){}return o?o.infoHash!==e.infoHash?(e.emit("warning",new Error(`got torrent file with incorrect info hash from xs param: ${t}`)),n(null)):(e._onMetadata(o),void n(null)):(e.emit("warning",new Error(`got invalid torrent file from xs param: ${t}`)),n(null))})}catch(fi){return e.emit("warning",new Error(`skipping invalid url xs param: ${t}`)),n(null)}e._xsRequests.push(i)}(t,n)});kt(t)}_onMetadata(e){if(this.metadata||this.destroyed)return;let t;if(this._debug("got metadata"),this._xsRequests.forEach(e=>{e.abort()}),this._xsRequests=[],e&&e.infoHash)t=e;else try{t=xn(e)}catch(fi){return this._destroy(fi)}if(this._processParsedTorrent(t),this.metadata=this.torrentFile,this.client.enableWebSeeds&&this.urlList.forEach(e=>{this.addWebSeed(e)}),this._rarityMap=new class{constructor(e){this._torrent=e,this._numPieces=e.pieces.length,this._pieces=new Array(this._numPieces),this._onWire=(e=>{this.recalculate(),this._initWire(e)}),this._onWireHave=(e=>{this._pieces[e]+=1}),this._onWireBitfield=(()=>{this.recalculate()}),this._torrent.wires.forEach(e=>{this._initWire(e)}),this._torrent.on("wire",this._onWire),this.recalculate()}getRarestPiece(e){let t=[],n=1/0;for(let r=0;r<this._numPieces;++r){if(e&&!e(r))continue;const i=this._pieces[r];i===n?t.push(r):i<n&&(t=[r],n=i)}return t.length?t[Math.random()*t.length|0]:-1}destroy(){this._torrent.removeListener("wire",this._onWire),this._torrent.wires.forEach(e=>{this._cleanupWireEvents(e)}),this._torrent=null,this._pieces=null,this._onWire=null,this._onWireHave=null,this._onWireBitfield=null}_initWire(e){e._onClose=(()=>{this._cleanupWireEvents(e);for(let t=0;t<this._numPieces;++t)this._pieces[t]-=e.peerPieces.get(t)}),e.on("have",this._onWireHave),e.on("bitfield",this._onWireBitfield),e.once("close",e._onClose)}recalculate(){this._pieces.fill(0);for(const e of this._torrent.wires)for(let t=0;t<this._numPieces;++t)this._pieces[t]+=e.peerPieces.get(t)}_cleanupWireEvents(e){e.removeListener("have",this._onWireHave),e.removeListener("bitfield",this._onWireBitfield),e._onClose&&e.removeListener("close",e._onClose),e._onClose=null}}(this),this.store=new nr(new this._store(this.pieceLength,{torrent:{infoHash:this.infoHash},files:this.files.map(e=>({path:et.join(this.path,e.path),length:e.length,offset:e.offset})),length:this.length,name:this.infoHash})),this.files=this.files.map(e=>new ei(this,e)),this.so){const e=ur.parse(this.so);this.files.forEach((t,n)=>{e.includes(n)&&this.files[n].select(!0)})}else 0!==this.pieces.length&&this.select(0,this.pieces.length-1,!1);if(this._hashes=this.pieces,this.pieces=this.pieces.map((e,t)=>{const n=t===this.pieces.length-1?this.lastPieceLength:this.pieceLength;return new ir(n)}),this._reservations=this.pieces.map(()=>[]),this.bitfield=new jn(this.pieces.length),this.wires.forEach(e=>{e.ut_metadata&&e.ut_metadata.setMetadata(this.metadata),this._onWireWithMetadata(e)}),this.emit("metadata"),!this.destroyed)if(this.skipVerify)this._markAllVerified(),this._onStore();else{const e=e=>{if(e)return this._destroy(e);this._debug("done verifying"),this._onStore()};this._debug("verifying existing torrent data"),this._fileModtimes&&this._store===tr?this.getFileModtimes((t,n)=>{if(t)return this._destroy(t);this.files.map((e,t)=>n[t]===this._fileModtimes[t]).every(e=>e)?(this._markAllVerified(),this._onStore()):this._verifyPieces(e)}):this._verifyPieces(e)}}getFileModtimes(e){const t=[];rr(this.files.map((e,n)=>r=>{ut.stat(et.join(this.path,e.path),(e,i)=>{if(e&&"ENOENT"!==e.code)return r(e);t[n]=i&&i.mtime.getTime(),r(null)})}),s,n=>{this._debug("done getting file modtimes"),e(n,t)})}_verifyPieces(t){rr(this.pieces.map((t,n)=>t=>{if(this.destroyed)return t(new Error("torrent is destroyed"));this.store.get(n,(r,i)=>this.destroyed?t(new Error("torrent is destroyed")):r?e.nextTick(t,null):void Lt(i,e=>{if(this.destroyed)return t(new Error("torrent is destroyed"));if(e===this._hashes[n]){if(!this.pieces[n])return t(null);this._debug("piece verified %s",n),this._markVerified(n)}else this._debug("piece invalid %s",n);t(null)}))}),s,t)}rescanFiles(e){if(this.destroyed)throw new Error("torrent is destroyed");e||(e=u),this._verifyPieces(t=>{if(t)return this._destroy(t),e(t);this._checkDone(),e(null)})}_markAllVerified(){for(let e=0;e<this.pieces.length;e++)this._markVerified(e)}_markVerified(e){this.pieces[e]=null,this._reservations[e]=null,this.bitfield.set(e,!0)}_onStore(){this.destroyed||(this._debug("on store"),this._startDiscovery(),this.ready=!0,this.emit("ready"),this._checkDone(),this._updateSelections())}destroy(e){this._destroy(null,e)}_destroy(e,t){if(this.destroyed)return;this.destroyed=!0,this._debug("destroy"),this.client._remove(this),clearInterval(this._rechokeIntervalId),this._xsRequests.forEach(e=>{e.abort()}),this._rarityMap&&this._rarityMap.destroy();for(const r in this._peers)this.removePeer(r);this.files.forEach(e=>{e instanceof ei&&e._destroy()});const n=this._servers.map(e=>t=>{e.destroy(t)});this.discovery&&n.push(e=>{this.discovery.destroy(e)}),this.store&&n.push(e=>{this.store.close(e)}),kt(n,t),e&&(0===this.listenerCount("error")?this.client.emit("error",e):this.emit("error",e)),this.emit("close"),this.client=null,this.files=[],this.discovery=null,this.store=null,this._rarityMap=null,this._peers=null,this._servers=null,this._xsRequests=null}addPeer(e){if(this.destroyed)throw new Error("torrent is destroyed");if(!this.infoHash)throw new Error("addPeer() must not be called before the `infoHash` event");if(this.client.blocked){let t;if("string"==typeof e){let r;try{r=On(e)}catch(n){return this._debug("ignoring peer: invalid %s",e),this.emit("invalidPeer",e),!1}t=r[0]}else"string"==typeof e.remoteAddress&&(t=e.remoteAddress);if(t&&this.client.blocked.contains(t))return this._debug("ignoring peer: blocked %s",e),"string"!=typeof e&&e.destroy(),this.emit("blockedPeer",e),!1}const t=!!this._addPeer(e);return t?this.emit("peer",e):this.emit("invalidPeer",e),t}_addPeer(e){if(this.destroyed)return"string"!=typeof e&&e.destroy(),null;if("string"==typeof e&&!this._validAddr(e))return this._debug("ignoring peer: invalid %s",e),null;const t=e&&e.id||e;if(this._peers[t])return this._debug("ignoring peer: duplicate (%s)",t),"string"!=typeof e&&e.destroy(),null;if(this.paused)return this._debug("ignoring peer: torrent is paused"),"string"!=typeof e&&e.destroy(),null;let n;return this._debug("add peer %s",t),n="string"==typeof e?si.createTCPOutgoingPeer(e,this):si.createWebRTCPeer(e,this),this._peers[n.id]=n,this._peersLength+=1,"string"==typeof e&&(this._queue.push(n),this._drain()),n}addWebSeed(e){if(this.destroyed)throw new Error("torrent is destroyed");if(!/^https?:\/\/.+/.test(e))return this.emit("warning",new Error(`ignoring invalid web seed: ${e}`)),void this.emit("invalidPeer",e);if(this._peers[e])return this.emit("warning",new Error(`ignoring duplicate web seed: ${e}`)),void this.emit("invalidPeer",e);this._debug("add web seed %s",e);const t=si.createWebSeedPeer(e,this);this._peers[t.id]=t,this._peersLength+=1,this.emit("peer",e)}_addIncomingPeer(e){return this.destroyed?e.destroy(new Error("torrent is destroyed")):this.paused?e.destroy(new Error("torrent is paused")):(this._debug("add incoming peer %s",e.id),this._peers[e.id]=e,void(this._peersLength+=1))}removePeer(e){const t=e&&e.id||e;(e=this._peers[t])&&(this._debug("removePeer %s",t),delete this._peers[t],this._peersLength-=1,e.destroy(),this._drain())}select(e,t,n,r){if(this.destroyed)throw new Error("torrent is destroyed");if(e<0||t<e||this.pieces.length<=t)throw new Error(`invalid selection ${e} : ${t}`);n=Number(n)||0,this._debug("select %s-%s (priority %s)",e,t,n),this._selections.push({from:e,to:t,offset:0,priority:n,notify:r||u}),this._selections.sort((e,t)=>t.priority-e.priority),this._updateSelections()}deselect(e,t,n){if(this.destroyed)throw new Error("torrent is destroyed");n=Number(n)||0,this._debug("deselect %s-%s (priority %s)",e,t,n);for(let r=0;r<this._selections.length;++r){const i=this._selections[r];if(i.from===e&&i.to===t&&i.priority===n){this._selections.splice(r,1);break}}this._updateSelections()}critical(e,t){if(this.destroyed)throw new Error("torrent is destroyed");this._debug("critical %s-%s",e,t);for(let n=e;n<=t;++n)this._critical[n]=!0;this._updateSelections()}_onWire(t,n){if(this._debug("got wire %s (%s)",t._debugId,n||"Unknown"),t.on("download",e=>{this.destroyed||(this.received+=e,this._downloadSpeed(e),this.client._downloadSpeed(e),this.emit("download",e),this.client.emit("download",e))}),t.on("upload",e=>{this.destroyed||(this.uploaded+=e,this._uploadSpeed(e),this.client._uploadSpeed(e),this.emit("upload",e),this.client.emit("upload",e))}),this.wires.push(t),n){const e=On(n);t.remoteAddress=e[0],t.remotePort=e[1]}this.client.dht&&this.client.dht.listening&&t.on("port",e=>{if(!this.destroyed&&!this.client.dht.destroyed){if(!t.remoteAddress)return this._debug("ignoring PORT from peer with no address");if(0===e||e>65536)return this._debug("ignoring invalid PORT from peer");this._debug("port: %s (from %s)",e,n),this.client.dht.addNode({host:t.remoteAddress,port:e})}}),t.on("timeout",()=>{this._debug("wire timeout (%s)",n),t.destroy()}),t.setTimeout(3e4,!0),t.setKeepAlive(!0),t.use(cr(this.metadata)),t.ut_metadata.on("warning",e=>{this._debug("ut_metadata warning: %s",e.message)}),this.metadata||(t.ut_metadata.on("metadata",e=>{this._debug("got metadata via ut_metadata"),this._onMetadata(e)}),t.ut_metadata.fetch()),"function"!=typeof te||this.private||(t.use(te()),t.ut_pex.on("peer",e=>{this.done||(this._debug("ut_pex: got peer: %s (from %s)",e,n),this.addPeer(e))}),t.ut_pex.on("dropped",e=>{const t=this._peers[e];t&&!t.connected&&(this._debug("ut_pex: dropped peer: %s (from %s)",e,n),this.removePeer(e))}),t.once("close",()=>{t.ut_pex.reset()})),this.emit("wire",t,n),this.metadata&&e.nextTick(()=>{this._onWireWithMetadata(t)})}_onWireWithMetadata(e){let t=null;const n=()=>{this.destroyed||e.destroyed||(this._numQueued>2*(this._numConns-this.numPeers)&&e.amInterested?e.destroy():(t=setTimeout(n,5e3)).unref&&t.unref())};let r;const i=()=>{if(e.peerPieces.buffer.length===this.bitfield.buffer.length){for(r=0;r<this.pieces.length;++r)if(!e.peerPieces.get(r))return;e.isSeeder=!0,e.choke()}};e.on("bitfield",()=>{i(),this._update()}),e.on("have",()=>{i(),this._update()}),e.once("interested",()=>{e.unchoke()}),e.once("close",()=>{clearTimeout(t)}),e.on("choke",()=>{clearTimeout(t),(t=setTimeout(n,5e3)).unref&&t.unref()}),e.on("unchoke",()=>{clearTimeout(t),this._update()}),e.on("request",(t,n,r,i)=>{if(r>131072)return e.destroy();this.pieces[t]||this.store.get(t,{offset:n,length:r},i)}),e.bitfield(this.bitfield),e.uninterested(),e.peerExtensions.dht&&this.client.dht&&this.client.dht.listening&&e.port(this.client.dht.address().port),"webSeed"!==e.type&&(t=setTimeout(n,5e3)).unref&&t.unref(),e.isSeeder=!1,i()}_updateSelections(){this.ready&&!this.destroyed&&(e.nextTick(()=>{this._gcSelections()}),this._updateInterest(),this._update())}_gcSelections(){for(let e=0;e<this._selections.length;++e){const t=this._selections[e],n=t.offset;for(;this.bitfield.get(t.from+t.offset)&&t.from+t.offset<t.to;)t.offset+=1;n!==t.offset&&t.notify(),t.to===t.from+t.offset&&this.bitfield.get(t.from+t.offset)&&(this._selections.splice(e,1),e-=1,t.notify(),this._updateInterest())}this._selections.length||this.emit("idle")}_updateInterest(){const e=this._amInterested;this._amInterested=!!this._selections.length,this.wires.forEach(e=>{let t=!1;for(let n=0;n<this.pieces.length;++n)if(this.pieces[n]&&e.peerPieces.get(n)){t=!0;break}t?e.interested():e.uninterested()}),e!==this._amInterested&&(this._amInterested?this.emit("interested"):this.emit("uninterested"))}_update(){if(this.destroyed)return;const e=(t=this.wires,n=0,function(){if(n===t.length)return null;var e=t.length-n,r=Math.random()*e|0,i=t[n+r],s=t[n];return t[n]=i,t[n+r]=s,n++,i});var t,n;let r;for(;r=e();)this._updateWireWrapper(r)}_updateWireWrapper(e){const t=this;"undefined"!=typeof window&&"function"==typeof window.requestIdleCallback?window.requestIdleCallback(function(){t._updateWire(e)}):t._updateWire(e)}_updateWire(e){const t=this;if(e.peerChoking)return;if(!e.downloaded)return function(){if(e.requests.length)return;let n=t._selections.length;for(;n--;){const r=t._selections[n];let i;if("rarest"===t.strategy){const n=r.from+r.offset,o=r.to,a=o-n+1,h={};let c=0;const u=s(n,o,h);for(;c<a&&!((i=t._rarityMap.getRarestPiece(u))<0);){if(t._request(e,i,!1))return;h[i]=!0,c+=1}}else for(i=r.to;i>=r.from+r.offset;--i)if(e.peerPieces.get(i)&&t._request(e,i,!1))return}}();const n=c(e,.5);if(e.requests.length>=n)return;const r=c(e,1);function s(t,n,r,i){return s=>s>=t&&s<=n&&!(s in r)&&e.peerPieces.get(s)&&(!i||i(s))}function o(e){let n=e;for(let i=e;i<t._selections.length&&t._selections[i].priority;i++)n=i;const r=t._selections[e];t._selections[e]=t._selections[n],t._selections[n]=r}function a(n){if(e.requests.length>=r)return!0;const a=function(){const n=e.downloadSpeed()||1;if(n>i)return()=>!0;const r=Math.max(1,e.requests.length)*ir.BLOCK_LENGTH/n;let s=10,o=0;return e=>{if(!s||t.bitfield.get(e))return!0;let a=t.pieces[e].missing;for(;o<t.wires.length;o++){const h=t.wires[o],c=h.downloadSpeed();if(!(c<i)&&!(c<=n)&&h.peerPieces.get(e)&&!((a-=c*r)>0))return s--,!1}return!0}}();for(let i=0;i<t._selections.length;i++){const h=t._selections[i];let c;if("rarest"===t.strategy){const u=h.from+h.offset,d=h.to,l=d-u+1,f={};let p=0;const g=s(u,d,f,a);for(;p<l&&!((c=t._rarityMap.getRarestPiece(g))<0);){for(;t._request(e,c,t._critical[c]||n););if(!(e.requests.length<r))return h.priority&&o(i),!0;f[c]=!0,p++}}else for(c=h.from+h.offset;c<=h.to;c++)if(e.peerPieces.get(c)&&a(c)){for(;t._request(e,c,t._critical[c]||n););if(!(e.requests.length<r))return h.priority&&o(i),!0}}return!1}a(!1)||a(!0)}_rechoke(){if(!this.ready)return;this._rechokeOptimisticTime>0?this._rechokeOptimisticTime-=1:this._rechokeOptimisticWire=null;const e=[];this.wires.forEach(t=>{t.isSeeder||t===this._rechokeOptimisticWire||e.push({wire:t,downloadSpeed:t.downloadSpeed(),uploadSpeed:t.uploadSpeed(),salt:Math.random(),isChoked:!0})}),e.sort(function(e,t){return e.downloadSpeed!==t.downloadSpeed?t.downloadSpeed-e.downloadSpeed:e.uploadSpeed!==t.uploadSpeed?t.uploadSpeed-e.uploadSpeed:e.wire.amChoking!==t.wire.amChoking?e.wire.amChoking?1:-1:e.salt-t.salt});let t=0,n=0;for(;n<e.length&&t<this._rechokeNumSlots;++n)e[n].isChoked=!1,e[n].wire.peerInterested&&(t+=1);if(!this._rechokeOptimisticWire&&n<e.length&&this._rechokeNumSlots){const t=e.slice(n).filter(e=>e.wire.peerInterested),i=t[(r=t.length,Math.random()*r|0)];i&&(i.isChoked=!1,this._rechokeOptimisticWire=i.wire,this._rechokeOptimisticTime=2)}var r;e.forEach(e=>{e.wire.amChoking!==e.isChoked&&(e.isChoked?e.wire.choke():e.wire.unchoke())})}_hotswap(e,t){const n=e.downloadSpeed();if(n<ir.BLOCK_LENGTH)return!1;if(!this._reservations[t])return!1;const r=this._reservations[t];if(!r)return!1;let s,o,a=1/0;for(o=0;o<r.length;o++){const t=r[o];if(!t||t===e)continue;const h=t.downloadSpeed();h>=i||2*h>n||h>a||(s=t,a=h)}if(!s)return!1;for(o=0;o<r.length;o++)r[o]===s&&(r[o]=null);for(o=0;o<s.requests.length;o++){const e=s.requests[o];e.piece===t&&this.pieces[t].cancel(e.offset/ir.BLOCK_LENGTH|0)}return this.emit("hotswap",s,e,t),!0}_request(t,n,r){const i=this,s=t.requests.length,o="webSeed"===t.type;if(i.bitfield.get(n))return!1;if(s>=(o?Math.min(function(e,t,n){return 1+Math.ceil(1*e.downloadSpeed()/n)}(t,0,i.pieceLength),i.maxWebConns):c(t,1)))return!1;const a=i.pieces[n];let h=o?a.reserveRemaining():a.reserve();if(-1===h&&r&&i._hotswap(t,n)&&(h=o?a.reserveRemaining():a.reserve()),-1===h)return!1;let u=i._reservations[n];u||(u=i._reservations[n]=[]);let d=u.indexOf(null);-1===d&&(d=u.length),u[d]=t;const l=a.chunkOffset(h),f=o?a.chunkLengthRemaining(h):a.chunkLength(h);function p(){e.nextTick(()=>{i._update()})}return t.request(n,l,f,function e(r,s){if(i.destroyed)return;if(!i.ready)return i.once("ready",()=>{e(r,s)});if(u[d]===t&&(u[d]=null),a!==i.pieces[n])return p();if(r)return i._debug("error getting piece %s (offset: %s length: %s) from %s: %s",n,l,f,`${t.remoteAddress}:${t.remotePort}`,r.message),o?a.cancelRemaining(h):a.cancel(h),void p();if(i._debug("got piece %s (offset: %s length: %s) from %s",n,l,f,`${t.remoteAddress}:${t.remotePort}`),!a.set(h,s,t))return p();const c=a.flush();Lt(c,e=>{if(!i.destroyed){if(e===i._hashes[n]){if(!i.pieces[n])return;i._debug("piece verified %s",n),i.pieces[n]=null,i._reservations[n]=null,i.bitfield.set(n,!0),i.store.put(n,c),i.wires.forEach(e=>{e.have(n)}),i._checkDone()&&!i.destroyed&&i.discovery.complete()}else i.pieces[n]=new ir(a.length),i.emit("warning",new Error(`Piece ${n} failed verification`));p()}})}),!0}_checkDone(){if(this.destroyed)return;this.files.forEach(e=>{if(!e.done){for(let t=e._startPiece;t<=e._endPiece;++t)if(!this.bitfield.get(t))return;e.done=!0,e.emit("done"),this._debug(`file done: ${e.name}`)}});let e=!0;for(let t=0;t<this._selections.length;t++){const n=this._selections[t];for(let t=n.from;t<=n.to;t++)if(!this.bitfield.get(t)){e=!1;break}if(!e)break}return!this.done&&e&&(this.done=!0,this._debug(`torrent done: ${this.infoHash}`),this.emit("done")),this._gcSelections(),e}load(e,t){if(this.destroyed)throw new Error("torrent is destroyed");if(!this.ready)return this.once("ready",()=>{this.load(e,t)});Array.isArray(e)||(e=[e]),t||(t=u);const n=new pt(e),r=new Dn(this.store,this.pieceLength);hr(n,r,e=>{if(e)return t(e);this._markAllVerified(),this._checkDone(),t(null)})}createServer(e){if("function"!=typeof te)throw new Error("node.js-only method");if(this.destroyed)throw new Error("torrent is destroyed");const t=new te(this,e);return this._servers.push(t),t}pause(){this.destroyed||(this._debug("pause"),this.paused=!0)}resume(){this.destroyed||(this._debug("resume"),this.paused=!1,this._drain())}_debug(){const e=[].slice.call(arguments);e[0]=`[${this.client._debugId}] [${this._debugId}] ${e[0]}`,n(...e)}_drain(){if(this._debug("_drain numConns %s maxConns %s",this._numConns,this.client.maxConns),"function"!=typeof te.connect||this.destroyed||this.paused||this._numConns>=this.client.maxConns)return;this._debug("drain (%s queued, %s/%s peers)",this._numQueued,this.numPeers,this.client.maxConns);const e=this._queue.shift();if(!e)return;this._debug("tcp connect attempt to %s",e.addr);const t=On(e.addr),n={host:t[0],port:t[1]},r=e.conn=te.connect(n);r.once("connect",()=>{e.onConnect()}),r.once("error",t=>{e.destroy(t)}),e.startConnectTimeout(),r.on("close",()=>{if(this.destroyed)return;if(e.retries>=o.length)return void this._debug("conn %s closed: will not re-add (max %s attempts)",e.addr,o.length);const t=o[e.retries];this._debug("conn %s closed: will re-add to queue in %sms (attempt %s)",e.addr,t,e.retries+1);const n=setTimeout(()=>{const t=this._addPeer(e.addr);t&&(t.retries=e.retries+1)},t);n.unref&&n.unref()})}_validAddr(e){let t;try{t=On(e)}catch(i){return!1}const n=t[0],r=t[1];return r>0&&r<65535&&!("127.0.0.1"===n&&r===this.client.torrentPort)}}}).call(this,ce,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{});var li={};return function(e,t,n){const{EventEmitter:r}=d,i=jt("webtorrent"),s=ri,o=s.replace(/\d*./g,e=>`0${e%100}`.slice(-2)).slice(0,4),a=`-WW${o}-`;class h extends r{constructor(r={}){super(),"string"==typeof r.peerId?this.peerId=r.peerId:n.isBuffer(r.peerId)?this.peerId=r.peerId.toString("hex"):this.peerId=n.from(a+In(9).toString("base64")).toString("hex"),this.peerIdBuffer=n.from(this.peerId,"hex"),"string"==typeof r.nodeId?this.nodeId=r.nodeId:n.isBuffer(r.nodeId)?this.nodeId=r.nodeId.toString("hex"):this.nodeId=In(20).toString("hex"),this.nodeIdBuffer=n.from(this.nodeId,"hex"),this._debugId=this.peerId.toString("hex").substring(0,7),this.destroyed=!1,this.listening=!1,this.torrentPort=r.torrentPort||0,this.dhtPort=r.dhtPort||0,this.tracker=void 0!==r.tracker?r.tracker:{},this.torrents=[],this.maxConns=Number(r.maxConns)||55,this._debug("new webtorrent (peerId %s, nodeId %s, port %s)",this.peerId,this.nodeId,this.torrentPort),this.tracker&&("object"!=typeof this.tracker&&(this.tracker={}),r.rtcConfig&&(console.warn("WebTorrent: opts.rtcConfig is deprecated. Use opts.tracker.rtcConfig instead"),this.tracker.rtcConfig=r.rtcConfig),r.wrtc&&(console.warn("WebTorrent: opts.wrtc is deprecated. Use opts.tracker.wrtc instead"),this.tracker.wrtc=r.wrtc),t.WRTC&&!this.tracker.wrtc&&(this.tracker.wrtc=t.WRTC)),"function"==typeof te?this._tcpPool=new te(this):e.nextTick(()=>{this._onListening()}),this._downloadSpeed=Un(),this._uploadSpeed=Un(),!1!==r.dht&&"function"==typeof te?(this.dht=new te(Object.assign({},{nodeId:this.nodeId},r.dht)),this.dht.once("error",e=>{this._destroy(e)}),this.dht.once("listening",()=>{const e=this.dht.address();e&&(this.dhtPort=e.port)}),this.dht.setMaxListeners(0),this.dht.listen(this.dhtPort)):this.dht=!1,this.enableWebSeeds=!1!==r.webSeeds;const i=()=>{this.destroyed||(this.ready=!0,this.emit("ready"))};"function"==typeof te&&null!=r.blocklist?te(r.blocklist,{headers:{"user-agent":`WebTorrent/${s} (https://webtorrent.io)`}},(e,t)=>{if(e)return this.error(`Failed to load blocklist: ${e.message}`);this.blocked=t,i()}):e.nextTick(i)}get downloadSpeed(){return this._downloadSpeed()}get uploadSpeed(){return this._uploadSpeed()}get progress(){const e=this.torrents.filter(e=>1!==e.progress);return e.reduce((e,t)=>e+t.downloaded,0)/(e.reduce((e,t)=>e+(t.length||0),0)||1)}get ratio(){return this.torrents.reduce((e,t)=>e+t.uploaded,0)/(this.torrents.reduce((e,t)=>e+t.received,0)||1)}get(e){if(e instanceof di){if(this.torrents.includes(e))return e}else{let t;try{t=xn(e)}catch(fi){}if(!t)return null;if(!t.infoHash)throw new Error("Invalid torrent identifier");for(const e of this.torrents)if(e.infoHash===t.infoHash)return e}return null}download(e,t,n){return console.warn("WebTorrent: client.download() is deprecated. Use client.add() instead"),this.add(e,t,n)}add(e,t={},n){if(this.destroyed)throw new Error("client is destroyed");"function"==typeof t&&([t,n]=[{},t]);const r=()=>{if(!this.destroyed)for(const e of this.torrents)if(e.infoHash===s.infoHash&&e!==s)return void s._destroy(new Error(`Cannot add duplicate torrent ${s.infoHash}`))},i=()=>{this.destroyed||("function"==typeof n&&n(s),this.emit("torrent",s))};this._debug("add"),t=t?Object.assign({},t):{};const s=new di(e,this,t);return this.torrents.push(s),s.once("_infoHash",r),s.once("ready",i),s.once("close",function e(){s.removeListener("_infoHash",r),s.removeListener("ready",i),s.removeListener("close",e)}),s}seed(e,t,n){if(this.destroyed)throw new Error("client is destroyed");"function"==typeof t&&([t,n]=[{},t]),this._debug("seed"),(t=t?Object.assign({},t):{}).skipVerify=!0;const r="string"==typeof e;r&&(t.path=et.dirname(e)),t.createdBy||(t.createdBy=`WebTorrent/${o}`);const i=e=>{this._debug("on seed"),"function"==typeof n&&n(e),e.emit("seed"),this.emit("seed",e)},s=this.add(null,t,e=>{const t=[t=>{if(r)return t();e.load(a,t)}];this.dht&&t.push(t=>{e.once("dhtAnnounce",t)}),kt(t,t=>{if(!this.destroyed)return t?e._destroy(t):void i(e)})});let a;return"undefined"!=typeof FileList&&e instanceof FileList?e=Array.from(e):Array.isArray(e)||(e=[e]),kt(e.map(e=>t=>{!function(t){return"object"==typeof e&&null!=e&&"function"==typeof e.pipe}()?t(null,e):P(e,t)}),(e,n)=>{if(!this.destroyed)return e?s._destroy(e):void Nt.parseInput(n,t,(e,r)=>{if(!this.destroyed){if(e)return s._destroy(e);a=r.map(e=>e.getStream),Nt(n,t,(e,t)=>{if(this.destroyed)return;if(e)return s._destroy(e);const n=this.get(t);n?s._destroy(new Error(`Cannot add duplicate torrent ${n.infoHash}`)):s._onTorrentId(t)})}})}),s}remove(e,t){if(this._debug("remove"),!this.get(e))throw new Error(`No torrent with id ${e}`);this._remove(e,t)}_remove(e,t){const n=this.get(e);n&&(this.torrents.splice(this.torrents.indexOf(n),1),n.destroy(t))}address(){return this.listening?this._tcpPool?this._tcpPool.server.address():{address:"0.0.0.0",family:"IPv4",port:0}:null}destroy(e){if(this.destroyed)throw new Error("client already destroyed");this._destroy(null,e)}_destroy(e,t){this._debug("client destroy"),this.destroyed=!0;const n=this.torrents.map(e=>t=>{e.destroy(t)});this._tcpPool&&n.push(e=>{this._tcpPool.destroy(e)}),this.dht&&n.push(e=>{this.dht.destroy(e)}),kt(n,t),e&&this.emit("error",e),this.torrents=[],this._tcpPool=null,this.dht=null}_onListening(){if(this._debug("listening"),this.listening=!0,this._tcpPool){const e=this._tcpPool.server.address();e&&(this.torrentPort=e.port)}this.emit("listening")}_debug(){const e=[].slice.call(arguments);e[0]=`[${this._debugId}] ${e[0]}`,i(...e)}}h.WEBRTC_SUPPORT=An.WEBRTC_SUPPORT,h.VERSION=s,li=h}.call(this,ce,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{},u({}).Buffer),li});
\ No newline at end of file |