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wgengine/magicsock: add a connectivity test for facing firewalls.

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The test demonstrates that magicsock can traverse two stateful
firewalls facing each other, that each require localhost to
initiate connections.

Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson
2020-07-11 07:03:19 +00:00
parent 1f7b1a4c6c
commit 88e8456e9b
3 changed files with 48 additions and 3 deletions
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5
tstest/natlab/firewall.go
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@@ -49,8 +49,11 @@ func (f *Firewall) HandlePacket(p *Packet, inIf *Interface) PacketVerdict {
if f.seen == nil {
f.seen = map[session]time.Time{}
}
if f.SessionTimeout == 0 {
f.SessionTimeout = 30 * time.Second
}
if inIf == f.TrustedInterface {
if inIf == f.TrustedInterface || inIf == nil {
sess := session{
src: p.Src,
dst: p.Dst,