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Add session context outbounds as slice (#3356)

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* Add session context outbounds as slice

slice is needed for dialer proxy where two outbounds work on top of each other
There are two sets of target addr for example
It also enable Xtls to correctly do splice copy by checking both outbounds are ready to do direct copy

* Fill outbound tag info

* Splice now checks capalibility from all outbounds

* Fix unit tests
This commit is contained in:
yuhan6665 2024-05-13 21:52:24 -04:00 • committed by GitHub
parent 0735053348
commit 017f53b5fc
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42 changed files with 303 additions and 236 deletions
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20
proxy/vless/encoding/encoding.go
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@ -174,15 +174,18 @@ 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 {
func XtlsRead(reader buf.Reader, writer buf.Writer, timer signal.ActivityUpdater, conn net.Conn, input *bytes.Reader, rawInput *bytes.Buffer, trafficState *proxy.TrafficState, ob *session.Outbound, ctx context.Context) error {
err := func() error {
for {
if trafficState.ReaderSwitchToDirectCopy {
var writerConn net.Conn
if inbound := session.InboundFromContext(ctx); inbound != nil && inbound.Conn != nil {
if inbound := session.InboundFromContext(ctx); inbound != nil && inbound.Conn != nil && ob != nil {
writerConn = inbound.Conn
if inbound.CanSpliceCopy == 2 {
inbound.CanSpliceCopy = 1 // force the value to 1, don't use setter
inbound.CanSpliceCopy = 1
}
if ob.CanSpliceCopy == 2 { // ob need to be passed in due to context can change
ob.CanSpliceCopy = 1
}
}
return proxy.CopyRawConnIfExist(ctx, conn, writerConn, writer, timer)
@ -219,14 +222,19 @@ func XtlsRead(reader buf.Reader, writer buf.Writer, timer signal.ActivityUpdater
}
// XtlsWrite filter and write xtls protocol
func XtlsWrite(reader buf.Reader, writer buf.Writer, timer signal.ActivityUpdater, conn net.Conn, trafficState *proxy.TrafficState, ctx context.Context) error {
func XtlsWrite(reader buf.Reader, writer buf.Writer, timer signal.ActivityUpdater, conn net.Conn, trafficState *proxy.TrafficState, ob *session.Outbound, ctx context.Context) error {
err := func() error {
var ct stats.Counter
for {
buffer, err := reader.ReadMultiBuffer()
if trafficState.WriterSwitchToDirectCopy {
if inbound := session.InboundFromContext(ctx); inbound != nil && inbound.CanSpliceCopy == 2 {
inbound.CanSpliceCopy = 1 // force the value to 1, don't use setter
if inbound := session.InboundFromContext(ctx); inbound != nil && ob != nil {
if inbound.CanSpliceCopy == 2 {
inbound.CanSpliceCopy = 1
}
if ob.CanSpliceCopy == 2 {
ob.CanSpliceCopy = 1
}
}
rawConn, _, writerCounter := proxy.UnwrapRawConn(conn)
writer = buf.NewWriter(rawConn)