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XTLS Vision: Apply padding to single XUDP by default at client side 

Requires Xray-core v1.8.1+ at server side: 242f3b0e0b
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RPRX 2024-02-02 20:32:46 +00:00 committed by GitHub
parent dd635c7c8d
commit ad3d347cfc
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GPG Key ID: B5690EEEBB952194
4 changed files with 12 additions and 10 deletions
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6
proxy/vless/encoding/addons.go
View File

@ -62,11 +62,7 @@ func DecodeHeaderAddons(buffer *buf.Buffer, reader io.Reader) (*Addons, error) {
// EncodeBodyAddons returns a Writer that auto-encrypt content written by caller.
func EncodeBodyAddons(writer io.Writer, request *protocol.RequestHeader, requestAddons *Addons, state *proxy.TrafficState, context context.Context) buf.Writer {
if request.Command == protocol.RequestCommandUDP {
w := writer.(buf.Writer)
if requestAddons.Flow == vless.XRV {
w = proxy.NewVisionWriter(w, state, context)
}
return NewMultiLengthPacketWriter(w)
return NewMultiLengthPacketWriter(writer.(buf.Writer))
}
w := buf.NewWriter(writer)
if requestAddons.Flow == vless.XRV {

3
proxy/vless/encoding/encoding.go
View File

@ -176,7 +176,6 @@ func DecodeResponseHeader(reader io.Reader, request *protocol.RequestHeader) (*A
// XtlsRead filter and read xtls protocol
func XtlsRead(reader buf.Reader, writer buf.Writer, timer signal.ActivityUpdater, conn net.Conn, input *bytes.Reader, rawInput *bytes.Buffer, trafficState *proxy.TrafficState, ctx context.Context) error {
err := func() error {
visionReader := proxy.NewVisionReader(reader, trafficState, ctx)
for {
if trafficState.ReaderSwitchToDirectCopy {
var writerConn net.Conn
@ -188,7 +187,7 @@ func XtlsRead(reader buf.Reader, writer buf.Writer, timer signal.ActivityUpdater
}
return proxy.CopyRawConnIfExist(ctx, conn, writerConn, writer, timer)
}
buffer, err := visionReader.ReadMultiBuffer()
buffer, err := reader.ReadMultiBuffer()
if !buffer.IsEmpty() {
timer.Update()
if trafficState.ReaderSwitchToDirectCopy {

1
proxy/vless/inbound/inbound.go
View File

@ -522,6 +522,7 @@ func (h *Handler) Process(ctx context.Context, network net.Network, connection s
if requestAddons.Flow == vless.XRV {
ctx1 := session.ContextWithInbound(ctx, nil) // TODO enable splice
clientReader = proxy.NewVisionReader(clientReader, trafficState, ctx1)
err = encoding.XtlsRead(clientReader, serverWriter, timer, connection, input, rawInput, trafficState, ctx1)
} else {
// from clientReader.ReadMultiBuffer to serverWriter.WriteMultiBufer

12
proxy/vless/outbound/outbound.go
View File

@ -138,7 +138,6 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
if !allowUDP443 && request.Port == 443 {
return newError("XTLS rejected UDP/443 traffic").AtInfo()
}
requestAddons.Flow = ""
case protocol.RequestCommandMux:
fallthrough // let server break Mux connections that contain TCP requests
case protocol.RequestCommandTCP:
@ -185,7 +184,7 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
clientReader := link.Reader // .(*pipe.Reader)
clientWriter := link.Writer // .(*pipe.Writer)
trafficState := proxy.NewTrafficState(account.ID.Bytes())
if request.Command == protocol.RequestCommandUDP && h.cone && request.Port != 53 && request.Port != 443 {
if request.Command == protocol.RequestCommandUDP && (requestAddons.Flow == vless.XRV || (h.cone && request.Port != 53 && request.Port != 443)) {
request.Command = protocol.RequestCommandMux
request.Address = net.DomainAddress("v1.mux.cool")
request.Port = net.Port(666)
@ -266,8 +265,15 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
// default: serverReader := buf.NewReader(conn)
serverReader := encoding.DecodeBodyAddons(conn, request, responseAddons)
if requestAddons.Flow == vless.XRV {
serverReader = proxy.NewVisionReader(serverReader, trafficState, ctx)
}
if request.Command == protocol.RequestCommandMux && request.Port == 666 {
serverReader = xudp.NewPacketReader(conn)
if requestAddons.Flow == vless.XRV {
serverReader = xudp.NewPacketReader(&buf.BufferedReader{Reader: serverReader})
} else {
serverReader = xudp.NewPacketReader(conn)
}
}
if requestAddons.Flow == vless.XRV {