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Re-implement lazy conns

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世界 2024-11-08 10:29:20 +08:00
parent a5cb9f4f5f
commit b1e2673c21
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6 changed files with 231 additions and 33 deletions
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33
stack_gvisor.go
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@ -17,7 +17,6 @@ import (
"github.com/sagernet/gvisor/pkg/tcpip/transport/icmp"
"github.com/sagernet/gvisor/pkg/tcpip/transport/tcp"
"github.com/sagernet/gvisor/pkg/tcpip/transport/udp"
"github.com/sagernet/gvisor/pkg/waiter"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
M "github.com/sagernet/sing/common/metadata"
@ -81,32 +80,14 @@ func (t *GVisor) Start() error {
r.Complete(pErr != ErrDrop)
return
}
var (
wq waiter.Queue
endpoint tcpip.Endpoint
tErr tcpip.Error
)
handshakeCtx, cancel := context.WithCancel(context.Background())
go func() {
select {
case <-t.ctx.Done():
wq.Notify(wq.Events())
case <-handshakeCtx.Done():
}
}()
endpoint, tErr = r.CreateEndpoint(&wq)
cancel()
if tErr != nil {
r.Complete(true)
return
conn := &gLazyConn{
parentCtx: t.ctx,
stack: t.stack,
request: r,
localAddr: source.TCPAddr(),
remoteAddr: destination.TCPAddr(),
}
r.Complete(false)
endpoint.SocketOptions().SetKeepAlive(true)
keepAliveIdle := tcpip.KeepaliveIdleOption(15 * time.Second)
endpoint.SetSockOpt(&keepAliveIdle)
keepAliveInterval := tcpip.KeepaliveIntervalOption(15 * time.Second)
endpoint.SetSockOpt(&keepAliveInterval)
go t.handler.NewConnectionEx(t.ctx, gonet.NewTCPConn(&wq, endpoint), source, destination, nil)
go t.handler.NewConnectionEx(t.ctx, conn, source, destination, nil)
})
ipStack.SetTransportProtocolHandler(tcp.ProtocolNumber, tcpForwarder.HandlePacket)
ipStack.SetTransportProtocolHandler(udp.ProtocolNumber, NewUDPForwarder(t.ctx, ipStack, t.handler, t.udpTimeout).HandlePacket)