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plumb ECN through via relays

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This commit is contained in:
JackDoan
2026-07-31 12:14:56 -05:00
parent b3002c2d13
commit b7bf32240b
18 changed files with 282 additions and 79 deletions
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punchy.go
+3 -3
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@@ -176,7 +176,7 @@ func (p *Punchy) SendPunch(hostinfo *HostInfo) {
p.sendPunchToAllRemotes(hostinfo)
} else if hr := hostinfo.GetRemote(); hr.IsValid() {
p.metricPunchyTx.Inc(1)
p.punchConn.WriteTo([]byte{1}, hr)
p.punchConn.WriteTo([]byte{1}, hr, 0)
}
}
@@ -200,7 +200,7 @@ func (p *Punchy) SendPunchToAll(hostinfo *HostInfo) {
func (p *Punchy) sendPunchToAllRemotes(hostinfo *HostInfo) {
hostinfo.remotes.ForEach(p.hm.GetPreferredRanges(), func(addr netip.AddrPort, preferred bool) {
p.metricPunchyTx.Inc(1)
p.punchConn.WriteTo([]byte{1}, addr)
p.punchConn.WriteTo([]byte{1}, addr, 0)
})
}
@@ -222,7 +222,7 @@ func (p *Punchy) Start(ctx context.Context, ifce EncWriter, hm *HostMap, lh ligh
p.l.Debug("Punching", "target", job.target, "vpnAddr", job.vpnAddr)
}
p.metricHolepunchTx.Inc(1)
p.punchConn.WriteTo(empty, job.target)
p.punchConn.WriteTo(empty, job.target, 0)
case job.vpnAddr.IsValid():
// A nebula test packet to the host trying to contact us.
// In the case of a double nat or other difficult scenario, this may help establish a tunnel.