http2: improve tests and docs

This commit documents the event parameters and `http2stream.respond`,
and adds some tests to ensure the actual behaviors are aligned with
the docs.

Testing the 'Http2Server.sessionError' event is added by updating
`test/parallel/test-http2-options-max-headers-exceeds-nghttp2.js`.
The event seemingly has not been tested so far.

`ServerHttp2Session` is exported to validate the `session` event
and the `sessionError` event.

Signed-off-by: Daeyeon Jeong daeyeon.dev@gmail.com

PR-URL: https://github.com/nodejs/node/pull/42858
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/internal/http2/core.js b/lib/internal/http2/core.js
index 9d8d6bc2c86..871794f51bb 100644
--- a/lib/internal/http2/core.js
+++ b/lib/internal/http2/core.js
@@ -3401,6 +3401,7 @@ module.exports = {
   sensitiveHeaders: kSensitiveHeaders,
   Http2Session,
   Http2Stream,
+  ServerHttp2Session,
   Http2ServerRequest,
   Http2ServerResponse
 };