/
websocket.go
77 lines (62 loc) · 1.79 KB
/
websocket.go
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package connectors
import (
"context"
"net"
"net/http"
"github.com/magisterquis/connectproxy"
"github.com/Doridian/wsvpn/shared/sockets/adapters"
"github.com/gobwas/ws"
"golang.org/x/net/proxy"
)
func init() {
proxy.RegisterDialerType("http", connectproxy.New)
proxy.RegisterDialerType("https", connectproxy.New)
}
type WebSocketConnector struct {
}
var _ SocketConnector = &WebSocketConnector{}
func NewWebSocketConnector() *WebSocketConnector {
return &WebSocketConnector{}
}
func (c *WebSocketConnector) Dial(config SocketConnectorConfig) (adapters.SocketAdapter, error) {
respHeaders := http.Header{}
dialer := ws.Dialer{
OnHeader: func(key, value []byte) error {
respHeaders.Add(string(key), string(value))
return nil
},
}
enhancedDialer := config.GetDialer()
proxyURL := config.GetProxyURL()
if proxyURL != nil {
proxyDialer, err := proxy.FromURL(proxyURL, proxy.Direct)
if err != nil {
return nil, err
}
dialer.NetDial = func(ctx context.Context, network string, addr string) (net.Conn, error) {
return proxyDialer.Dial(network, addr)
}
} else if enhancedDialer != nil {
dialer.NetDial = enhancedDialer.DialContext
}
dialer.TLSConfig = config.GetTLSConfig()
headers := config.GetHeaders()
addSupportedSerializationHeader(headers)
dialer.Header = ws.HandshakeHeaderHTTP(headers)
conn, reader, _, err := dialer.Dial(context.Background(), config.GetServerURL().String())
if err != nil {
return nil, err
}
if enhancedDialer == nil {
err = config.EnhanceConn(conn)
if err != nil {
_ = conn.Close()
return nil, err
}
}
serializationType := readSerializationType(respHeaders)
return adapters.NewWebSocketAdapter(conn, serializationType, false, reader), nil
}
func (c *WebSocketConnector) GetSchemes() []string {
return []string{"ws", "wss"}
}