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57 lines
1.7 KiB
Go
57 lines
1.7 KiB
Go
// Copyright (c) 2015 Niels Freier
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// Copyright (c) 2015 Edmund Huber
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// released under the MIT license
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package irc
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import (
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"net/http"
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"time"
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"github.com/gorilla/websocket"
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)
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var upgrader = websocket.Upgrader{
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ReadBufferSize: 2048,
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WriteBufferSize: 2048,
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// If a WS session contains sensitive information, and you choose to use
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// cookies for authentication (during the HTTP(S) upgrade request), then
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// you should check that Origin is a domain under your control. If it
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// isn't, then it is possible for users of your site, visiting a naughty
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// Origin, to have a WS opened using their credentials. See
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// http://www.christian-schneider.net/CrossSiteWebSocketHijacking.html#main.
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// We don't care about Origin because the (IRC) authentication is contained
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// in the WS stream -- the WS session is not privileged when it is opened.
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CheckOrigin: func(r *http.Request) bool { return true },
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}
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// WSContainer holds the websocket.
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type WSContainer struct {
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*websocket.Conn
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}
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// Read reads new incoming messages.
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func (ws WSContainer) Read(msg []byte) (int, error) {
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ty, bytes, err := ws.ReadMessage()
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if ty == websocket.TextMessage {
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n := copy(msg, []byte(string(bytes)+"\r\n\r\n"))
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return n, err
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}
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// Binary, and other kinds of messages, are thrown away.
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return 0, nil
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}
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// Write writes lines out to the websocket.
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func (ws WSContainer) Write(msg []byte) (int, error) {
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err := ws.WriteMessage(websocket.TextMessage, msg)
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return len(msg), err
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}
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// SetDeadline sets the read and write deadline on this websocket.
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func (ws WSContainer) SetDeadline(t time.Time) error {
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if err := ws.SetWriteDeadline(t); err != nil {
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return err
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}
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return ws.SetReadDeadline(t)
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}
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