package websocket import ( "context" "time" "v2ray.com/core/common" "v2ray.com/core/common/net" "v2ray.com/core/common/session" "v2ray.com/core/external/github.com/gorilla/websocket" "v2ray.com/core/transport/internet" "v2ray.com/core/transport/internet/tls" ) // Dial dials a WebSocket connection to the given destination. func Dial(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (internet.Connection, error) { newError("creating connection to ", dest).WriteToLog(session.ExportIDToError(ctx)) conn, err := dialWebsocket(ctx, dest, streamSettings) if err != nil { return nil, newError("failed to dial WebSocket").Base(err) } return internet.Connection(conn), nil } func init() { common.Must(internet.RegisterTransportDialer(protocolName, Dial)) } func dialWebsocket(ctx context.Context, dest net.Destination, streamSettings *internet.MemoryStreamConfig) (net.Conn, error) { wsSettings := streamSettings.ProtocolSettings.(*Config) dialer := &websocket.Dialer{ NetDial: func(network, addr string) (net.Conn, error) { return internet.DialSystem(ctx, dest, streamSettings.SocketSettings) }, ReadBufferSize: 4 * 1024, WriteBufferSize: 4 * 1024, HandshakeTimeout: time.Second * 8, } protocol := "ws" if config := tls.ConfigFromStreamSettings(streamSettings); config != nil { protocol = "wss" dialer.TLSClientConfig = config.GetTLSConfig(tls.WithDestination(dest)) } host := dest.NetAddr() if (protocol == "ws" && dest.Port == 80) || (protocol == "wss" && dest.Port == 443) { host = dest.Address.String() } uri := protocol + "://" + host + wsSettings.GetNormalizedPath() conn, resp, err := dialer.Dial(uri, wsSettings.GetRequestHeader()) if err != nil { var reason string if resp != nil { reason = resp.Status } return nil, newError("failed to dial to (", uri, "): ", reason).Base(err) } return newConnection(conn, conn.RemoteAddr()), nil }