mirrors/tailscale
1
0
Fork 0
mirror of https://github.com/tailscale/tailscale.git synced 2026-05-05 20:26:47 +02:00
Code Issues Packages Projects Releases Wiki Activity

wgengine/netstack: add UDP forwarding bypass.

Browse Source 
Allow a tsnet application to supply its own UDP
handling, similar to the existing TCP handling.

Updates https://github.com/tailscale/tailscale/issues/5871

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
This commit is contained in:
Denton Gentry 2023-03-03 19:53:10 -08:00
parent 2d3ae485e3
commit 93042b4407
No known key found for this signature in database
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
wgengine/netstack/netstack.go
View File

@ -84,6 +84,10 @@ type Impl struct {
// port other than accepting it and closing it.
ForwardTCPIn func(c net.Conn, port uint16)
// ForwardUDPIn, if non-nil, handles forwarding inbound UDP
// packets.
ForwardUDPIn func(c net.PacketConn, port uint16)
// ProcessLocalIPs is whether netstack should handle incoming
// traffic directed at the Node.Addresses (local IPs).
// It can only be set before calling Start.
@ -1021,6 +1025,12 @@ func (ns *Impl) acceptUDP(r *udp.ForwarderRequest) {
}
c := gonet.NewUDPConn(ns.ipstack, &wq, ep)
if ns.ForwardUDPIn != nil {
ns.ForwardUDPIn(c, r.ID().LocalPort)
return
}
go ns.forwardUDP(c, &wq, srcAddr, dstAddr)
}