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// +build !confonly
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
}
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