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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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GPG key ID: B5690EEEBB952194
42 changed files with 303 additions and 236 deletions
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13
transport/internet/dialer.go
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@ -112,7 +112,12 @@ func canLookupIP(ctx context.Context, dst net.Destination, sockopt *SocketConfig
func redirect(ctx context.Context, dst net.Destination, obt string) net.Conn {
newError("redirecting request " + dst.String() + " to " + obt).WriteToLog(session.ExportIDToError(ctx))
h := obm.GetHandler(obt)
ctx = session.ContextWithOutbound(ctx, &session.Outbound{Target: dst, Gateway: nil})
outbounds := session.OutboundsFromContext(ctx)
ctx = session.ContextWithOutbounds(ctx, append(outbounds, &session.Outbound{
Target: dst,
Gateway: nil,
Tag: obt,
})) // add another outbound in session ctx
if h != nil {
ur, uw := pipe.New(pipe.OptionsFromContext(ctx)...)
dr, dw := pipe.New(pipe.OptionsFromContext(ctx)...)
@ -131,8 +136,10 @@ func redirect(ctx context.Context, dst net.Destination, obt string) net.Conn {
// DialSystem calls system dialer to create a network connection.
func DialSystem(ctx context.Context, dest net.Destination, sockopt *SocketConfig) (net.Conn, error) {
var src net.Address
if outbound := session.OutboundFromContext(ctx); outbound != nil {
src = outbound.Gateway
outbounds := session.OutboundsFromContext(ctx)
if len(outbounds) > 0 {
ob := outbounds[len(outbounds) - 1]
src = ob.Gateway
}
if sockopt == nil {
return effectiveSystemDialer.Dial(ctx, src, dest, sockopt)