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Add mutex to prevent concurrent connection write

This commit is contained in:
Justin Powell 2016-10-25 11:34:41 -07:00 committed by GitHub
parent 0b847f2fac
commit 8400ba9d1b
1 changed files with 5 additions and 0 deletions
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5
examples/chat/client.go
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@ -46,6 +46,9 @@ type Client struct {
// Buffered channel of outbound messages. // Buffered channel of outbound messages.
send chan []byte send chan []byte
// Mutex to prevent concurrent writing to connection.
mux sync.Mutex
} }
// readPump pumps messages from the websocket connection to the hub. // readPump pumps messages from the websocket connection to the hub.
@ -72,6 +75,8 @@ func (c *Client) readPump() {
// write writes a message with the given message type and payload. // write writes a message with the given message type and payload.
func (c *Client) write(mt int, payload []byte) error { func (c *Client) write(mt int, payload []byte) error {
c.mux.Lock()
defer c.mux.Unlock()
c.conn.SetWriteDeadline(time.Now().Add(writeWait)) c.conn.SetWriteDeadline(time.Now().Add(writeWait))
return c.conn.WriteMessage(mt, payload) return c.conn.WriteMessage(mt, payload)
} }