2016-12-22 18:30:46 -05:00
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package websocket
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2016-08-13 09:44:36 -04:00
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import (
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"context"
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"time"
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2016-08-13 09:44:36 -04:00
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2018-07-13 06:17:52 -04:00
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"github.com/gorilla/websocket"
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2018-04-20 16:45:44 -04:00
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2017-02-08 12:30:16 -05:00
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"v2ray.com/core/common"
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2017-08-29 06:56:57 -04:00
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"v2ray.com/core/common/net"
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2018-06-24 19:09:02 -04:00
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"v2ray.com/core/common/session"
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"v2ray.com/core/transport/internet"
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"v2ray.com/core/transport/internet/tls"
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2016-08-13 09:44:36 -04:00
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)
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2017-04-26 04:59:18 -04:00
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// Dial dials a WebSocket connection to the given destination.
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func Dial(ctx context.Context, dest net.Destination) (internet.Connection, error) {
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newError("creating connection to ", dest).WriteToLog(session.ExportIDToError(ctx))
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2016-10-02 17:43:58 -04:00
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2017-04-07 15:54:40 -04:00
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conn, err := dialWebsocket(ctx, dest)
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if err != nil {
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return nil, newError("failed to dial WebSocket").Base(err)
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}
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2017-04-07 15:54:40 -04:00
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return internet.Connection(conn), nil
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}
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func init() {
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2018-08-06 07:48:35 -04:00
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common.Must(internet.RegisterTransportDialer(protocolName, Dial))
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}
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2017-08-29 06:56:57 -04:00
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func dialWebsocket(ctx context.Context, dest net.Destination) (net.Conn, error) {
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src := internet.DialerSourceFromContext(ctx)
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2018-09-07 08:50:25 -04:00
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wsSettings := internet.StreamSettingsFromContext(ctx).ProtocolSettings.(*Config)
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2016-10-02 17:43:58 -04:00
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2017-10-20 16:45:14 -04:00
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dialer := &websocket.Dialer{
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NetDial: func(network, addr string) (net.Conn, error) {
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return internet.DialSystem(ctx, src, dest)
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},
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2017-12-15 20:04:51 -05:00
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ReadBufferSize: 4 * 1024,
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WriteBufferSize: 4 * 1024,
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HandshakeTimeout: time.Second * 8,
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}
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2016-08-13 10:50:24 -04:00
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2016-09-30 10:53:40 -04:00
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protocol := "ws"
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2018-02-28 09:15:22 -05:00
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if config := tls.ConfigFromContext(ctx); config != nil {
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2017-12-16 18:53:17 -05:00
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protocol = "wss"
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2018-02-28 09:15:22 -05:00
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dialer.TLSClientConfig = config.GetTLSConfig(tls.WithDestination(dest))
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}
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2017-01-08 10:01:28 -05:00
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host := dest.NetAddr()
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if (protocol == "ws" && dest.Port == 80) || (protocol == "wss" && dest.Port == 443) {
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host = dest.Address.String()
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}
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2018-03-02 03:26:14 -05:00
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uri := protocol + "://" + host + wsSettings.GetNormalizedPath()
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2016-08-14 02:11:51 -04:00
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2017-10-13 11:54:04 -04:00
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conn, resp, err := dialer.Dial(uri, wsSettings.GetRequestHeader())
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2016-08-13 09:44:36 -04:00
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if err != nil {
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2017-02-10 05:41:50 -05:00
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var reason string
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2016-08-14 08:41:26 -04:00
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if resp != nil {
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reason = resp.Status
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2016-08-14 08:41:26 -04:00
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}
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2017-04-08 19:43:25 -04:00
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return nil, newError("failed to dial to (", uri, "): ", reason).Base(err)
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2016-08-13 09:44:36 -04:00
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}
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2017-02-09 05:42:17 -05:00
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2017-12-18 14:34:00 -05:00
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return newConnection(conn, conn.RemoteAddr()), nil
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2016-08-13 09:44:36 -04:00
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}
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