SagerNet/sing-tun
1
0
Fork 0
mirror of https://github.com/SagerNet/sing-tun.git synced 2025-04-03 03:47:39 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix udp for system stack

Browse source
This commit is contained in:
世界 2022-09-14 12:42:05 +08:00
parent c7dd5d457e
commit 6a00851c2b
No known key found for this signature in database
GPG key ID: CD109927C34A63C4
1 changed files with 10 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

14
system.go
View file

@ -298,17 +298,20 @@ func (s *System) processIPv4UDP(packet clashtcpip.IPv4Packet, header clashtcpip.
if packet.FragmentOffset() != 0 {
return E.New("ipv4: udp: fragment dropped")
}
data := buf.As(header.Payload())
if data.Len() == 0 {
return nil
}
source := netip.AddrPortFrom(packet.SourceIP(), header.SourcePort())
destination := netip.AddrPortFrom(packet.DestinationIP(), header.DestinationPort())
if !destination.Addr().IsGlobalUnicast() || destination.Addr().IsMulticast() {
return nil
}
data := buf.As(header.Payload()).ToOwned()
metadata := M.Metadata{
Source: M.SocksaddrFromNetIP(source),
Destination: M.SocksaddrFromNetIP(destination),
}
s.udpNat.NewPacket(s.ctx, source, data, metadata, func(natConn N.PacketConn) N.PacketWriter {
s.udpNat.NewPacket(s.ctx, source, data.ToOwned(), metadata, func(natConn N.PacketConn) N.PacketWriter {
hdr := buf.As(packet[:packet.HeaderLen()+clashtcpip.UDPHeaderSize]).ToOwned()
return &systemPacketWriter4{s.tun, hdr, source}
})
@ -321,12 +324,15 @@ func (s *System) processIPv6UDP(packet clashtcpip.IPv6Packet, header clashtcpip.
if !destination.Addr().IsGlobalUnicast() || destination.Addr().IsMulticast() {
return nil
}
data := buf.As(header.Payload()).ToOwned()
data := buf.As(header.Payload())
if data.Len() == 0 {
return nil
}
metadata := M.Metadata{
Source: M.SocksaddrFromNetIP(source),
Destination: M.SocksaddrFromNetIP(destination),
}
s.udpNat.NewPacket(s.ctx, source, data, metadata, func(natConn N.PacketConn) N.PacketWriter {
s.udpNat.NewPacket(s.ctx, source, data.ToOwned(), metadata, func(natConn N.PacketConn) N.PacketWriter {
hdr := buf.As(packet[:len(packet)-len(header.Payload())]).ToOwned()
return &systemPacketWriter6{s.tun, hdr, source}
})