diff options
Diffstat (limited to 'vendor/github.com/gorilla/websocket/client.go')
| -rw-r--r-- | vendor/github.com/gorilla/websocket/client.go | 140 |
1 files changed, 37 insertions, 103 deletions
diff --git a/vendor/github.com/gorilla/websocket/client.go b/vendor/github.com/gorilla/websocket/client.go index 43a87c753..934e28e96 100644 --- a/vendor/github.com/gorilla/websocket/client.go +++ b/vendor/github.com/gorilla/websocket/client.go @@ -5,10 +5,8 @@ package websocket import ( - "bufio" "bytes" "crypto/tls" - "encoding/base64" "errors" "io" "io/ioutil" @@ -88,50 +86,6 @@ type Dialer struct { var errMalformedURL = errors.New("malformed ws or wss URL") -// parseURL parses the URL. -// -// This function is a replacement for the standard library url.Parse function. -// In Go 1.4 and earlier, url.Parse loses information from the path. -func parseURL(s string) (*url.URL, error) { - // From the RFC: - // - // ws-URI = "ws:" "//" host [ ":" port ] path [ "?" query ] - // wss-URI = "wss:" "//" host [ ":" port ] path [ "?" query ] - var u url.URL - switch { - case strings.HasPrefix(s, "ws://"): - u.Scheme = "ws" - s = s[len("ws://"):] - case strings.HasPrefix(s, "wss://"): - u.Scheme = "wss" - s = s[len("wss://"):] - default: - return nil, errMalformedURL - } - - if i := strings.Index(s, "?"); i >= 0 { - u.RawQuery = s[i+1:] - s = s[:i] - } - - if i := strings.Index(s, "/"); i >= 0 { - u.Opaque = s[i:] - s = s[:i] - } else { - u.Opaque = "/" - } - - u.Host = s - - if strings.Contains(u.Host, "@") { - // Don't bother parsing user information because user information is - // not allowed in websocket URIs. - return nil, errMalformedURL - } - - return &u, nil -} - func hostPortNoPort(u *url.URL) (hostPort, hostNoPort string) { hostPort = u.Host hostNoPort = u.Host @@ -150,7 +104,7 @@ func hostPortNoPort(u *url.URL) (hostPort, hostNoPort string) { return hostPort, hostNoPort } -// DefaultDialer is a dialer with all fields set to the default zero values. +// DefaultDialer is a dialer with all fields set to the default values. var DefaultDialer = &Dialer{ Proxy: http.ProxyFromEnvironment, } @@ -177,7 +131,7 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re return nil, nil, err } - u, err := parseURL(urlStr) + u, err := url.Parse(urlStr) if err != nil { return nil, nil, err } @@ -246,36 +200,52 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re req.Header.Set("Sec-Websocket-Extensions", "permessage-deflate; server_no_context_takeover; client_no_context_takeover") } - hostPort, hostNoPort := hostPortNoPort(u) - - var proxyURL *url.URL - // Check wether the proxy method has been configured - if d.Proxy != nil { - proxyURL, err = d.Proxy(req) - } - if err != nil { - return nil, nil, err - } - - var targetHostPort string - if proxyURL != nil { - targetHostPort, _ = hostPortNoPort(proxyURL) - } else { - targetHostPort = hostPort - } - var deadline time.Time if d.HandshakeTimeout != 0 { deadline = time.Now().Add(d.HandshakeTimeout) } + // Get network dial function. netDial := d.NetDial if netDial == nil { netDialer := &net.Dialer{Deadline: deadline} netDial = netDialer.Dial } - netConn, err := netDial("tcp", targetHostPort) + // If needed, wrap the dial function to set the connection deadline. + if !deadline.Equal(time.Time{}) { + forwardDial := netDial + netDial = func(network, addr string) (net.Conn, error) { + c, err := forwardDial(network, addr) + if err != nil { + return nil, err + } + err = c.SetDeadline(deadline) + if err != nil { + c.Close() + return nil, err + } + return c, nil + } + } + + // If needed, wrap the dial function to connect through a proxy. + if d.Proxy != nil { + proxyURL, err := d.Proxy(req) + if err != nil { + return nil, nil, err + } + if proxyURL != nil { + dialer, err := proxy_FromURL(proxyURL, netDialerFunc(netDial)) + if err != nil { + return nil, nil, err + } + netDial = dialer.Dial + } + } + + hostPort, hostNoPort := hostPortNoPort(u) + netConn, err := netDial("tcp", hostPort) if err != nil { return nil, nil, err } @@ -286,42 +256,6 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re } }() - if err := netConn.SetDeadline(deadline); err != nil { - return nil, nil, err - } - - if proxyURL != nil { - connectHeader := make(http.Header) - if user := proxyURL.User; user != nil { - proxyUser := user.Username() - if proxyPassword, passwordSet := user.Password(); passwordSet { - credential := base64.StdEncoding.EncodeToString([]byte(proxyUser + ":" + proxyPassword)) - connectHeader.Set("Proxy-Authorization", "Basic "+credential) - } - } - connectReq := &http.Request{ - Method: "CONNECT", - URL: &url.URL{Opaque: hostPort}, - Host: hostPort, - Header: connectHeader, - } - - connectReq.Write(netConn) - - // Read response. - // Okay to use and discard buffered reader here, because - // TLS server will not speak until spoken to. - br := bufio.NewReader(netConn) - resp, err := http.ReadResponse(br, connectReq) - if err != nil { - return nil, nil, err - } - if resp.StatusCode != 200 { - f := strings.SplitN(resp.Status, " ", 2) - return nil, nil, errors.New(f[1]) - } - } - if u.Scheme == "https" { cfg := cloneTLSConfig(d.TLSClientConfig) if cfg.ServerName == "" { |