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// Copyright 2015 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package livereload
import (
"bytes"
"sync"
"github.com/gorilla/websocket"
)
type connection struct {
// The websocket connection.
ws *websocket.Conn
// Buffered channel of outbound messages.
send chan []byte
// There is a potential data race, especially visible with large files.
// This is protected by synchronisation of the send channel's close.
closer sync.Once
}
func (c *connection) close() {
c.closer.Do(func() {
close(c.send)
})
}
func (c *connection) reader() {
for {
_, message, err := c.ws.ReadMessage()
if err != nil {
break
}
if bytes.Contains(message, []byte(`"command":"hello"`)) {
c.send <- []byte(`{
"command": "hello",
"protocols": [ "http://livereload.com/protocols/official-7" ],
"serverName": "Hugo"
}`)
}
}
c.ws.Close()
}
func (c *connection) writer() {
for message := range c.send {
err := c.ws.WriteMessage(websocket.TextMessage, message)
if err != nil {
break
}
}
c.ws.Close()
}
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