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Remove unused ICMP replies & Improve tcpbuf options

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世界 2024-11-06 17:10:13 +08:00
parent 24206c3edd
commit a5cb9f4f5f
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GPG key ID: CD109927C34A63C4
7 changed files with 122 additions and 289 deletions
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12
stack_gvisor_udp.go
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@ -59,7 +59,9 @@ func rangeIterate(r stack.Range, fn func(*buffer.View))
func (f *UDPForwarder) PreparePacketConnection(source M.Socksaddr, destination M.Socksaddr, userData any) (bool, context.Context, N.PacketWriter, N.CloseHandlerFunc) {
pErr := f.handler.PrepareConnection(N.NetworkUDP, source, destination)
if pErr != nil {
gWriteUnreachable(f.stack, userData.(*stack.PacketBuffer), pErr)
if pErr != ErrDrop {
gWriteUnreachable(f.stack, userData.(*stack.PacketBuffer), pErr)
}
return false, nil, nil, nil
}
var sourceNetwork tcpip.NetworkProtocolNumber
@ -147,3 +149,11 @@ func (w *UDPBackWriter) WritePacket(packetBuffer *buf.Buffer, destination M.Sock
route.Stats().UDP.PacketsSent.Increment()
return nil
}
func gWriteUnreachable(gStack *stack.Stack, packet *stack.PacketBuffer, err error) error {
if packet.NetworkProtocolNumber == header.IPv4ProtocolNumber {
return gonet.TranslateNetstackError(gStack.NetworkProtocolInstance(header.IPv4ProtocolNumber).(stack.RejectIPv4WithHandler).SendRejectionError(packet, stack.RejectIPv4WithICMPPortUnreachable, true))
} else {
return gonet.TranslateNetstackError(gStack.NetworkProtocolInstance(header.IPv6ProtocolNumber).(stack.RejectIPv6WithHandler).SendRejectionError(packet, stack.RejectIPv6WithICMPPortUnreachable, true))
}
}