Fix Host ignored in v2ray websocket transport

transport/v2ray/transport.go

@@ -50,7 +50,7 @@ func NewClientTransport(ctx context.Context, dialer N.Dialer, serverAddr M.Socks
 	case C.V2RayTransportTypeGRPC:
 		return NewGRPCClient(ctx, dialer, serverAddr, options.GRPCOptions, tlsConfig)
 	case C.V2RayTransportTypeWebsocket:
-		return v2raywebsocket.NewClient(ctx, dialer, serverAddr, options.WebsocketOptions, tlsConfig), nil
+		return v2raywebsocket.NewClient(ctx, dialer, serverAddr, options.WebsocketOptions, tlsConfig)
 	case C.V2RayTransportTypeQUIC:
 		if tlsConfig == nil {
 			return nil, C.ErrTLSRequired

transport/v2rayhttp/client.go

@@ -81,7 +81,7 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 	uri.Path = options.Path
 	err := sHTTP.URLSetPath(&uri, options.Path)
 	if err != nil {
-		return nil, E.New("failed to set path: " + err.Error())
+		return nil, E.Cause(err, "parse path")
 	}
 	client.url = &uri
 	return client, nil

transport/v2raywebsocket/client.go

@@ -28,7 +28,7 @@ type Client struct {
 	earlyDataHeaderName string
 }
 
-func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, options option.V2RayWebsocketOptions, tlsConfig tls.Config) adapter.V2RayClientTransport {
+func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, options option.V2RayWebsocketOptions, tlsConfig tls.Config) (adapter.V2RayClientTransport, error) {
 	wsDialer := &websocket.Dialer{
 		ReadBufferSize:   4 * 1024,
 		WriteBufferSize:  4 * 1024,
@@ -68,11 +68,17 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 	requestURL.Path = options.Path
 	err := sHTTP.URLSetPath(&requestURL, options.Path)
 	if err != nil {
-		return nil
+		return nil, E.Cause(err, "parse path")
 	}
 	headers := make(http.Header)
 	for key, value := range options.Headers {
 		headers[key] = value
+		if key == "Host" {
+			if len(value) > 1 {
+				return nil, E.New("multiple Host headers")
+			}
+			requestURL.Host = value[0]
+		}
 	}
 	return &Client{
 		wsDialer,
@@ -81,7 +87,7 @@ func NewClient(ctx context.Context, dialer N.Dialer, serverAddr M.Socksaddr, opt
 		headers,
 		options.MaxEarlyData,
 		options.EarlyDataHeaderName,
-	}
+	}, nil
 }
 
 func (c *Client) DialContext(ctx context.Context) (net.Conn, error) {