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67 lines
1.8 KiB
67 lines
1.8 KiB
package websocket
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import (
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"context"
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"time"
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"github.com/gorilla/websocket"
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"v2ray.com/core/common"
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"v2ray.com/core/common/net"
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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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)
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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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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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return internet.Connection(conn), nil
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}
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func init() {
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common.Must(internet.RegisterTransportDialer(protocolName, Dial))
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}
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func dialWebsocket(ctx context.Context, dest net.Destination) (net.Conn, error) {
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wsSettings := internet.StreamSettingsFromContext(ctx).ProtocolSettings.(*Config)
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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, dest)
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},
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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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protocol := "ws"
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if config := tls.ConfigFromContext(ctx); config != nil {
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protocol = "wss"
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dialer.TLSClientConfig = config.GetTLSConfig(tls.WithDestination(dest))
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}
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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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uri := protocol + "://" + host + wsSettings.GetNormalizedPath()
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conn, resp, err := dialer.Dial(uri, wsSettings.GetRequestHeader())
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if err != nil {
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var reason string
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if resp != nil {
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reason = resp.Status
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}
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return nil, newError("failed to dial to (", uri, "): ", reason).Base(err)
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}
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return newConnection(conn, conn.RemoteAddr()), nil
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}
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