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net/portmapper: add logs about obtained mapping(s)

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This logs additional information about what mapping(s) are obtained
during the creation process, including whether we return an existing
cached mapping.

Updates #10597

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I9ff25071f064c91691db9ab0b9365ccc5f948d6e
This commit is contained in:
Andrew Dunham
2023-12-19 15:47:34 -05:00
parent f815d66a88
commit 3c333f6341
4 changed files with 69 additions and 1 deletions
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7
net/portmapper/upnp.go
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@@ -68,9 +68,16 @@ type upnpMapping struct {
// https://github.com/tailscale/tailscale/issues/7377
const upnpProtocolUDP = "UDP"
func (u *upnpMapping) MappingType() string { return "upnp" }
func (u *upnpMapping) GoodUntil() time.Time { return u.goodUntil }
func (u *upnpMapping) RenewAfter() time.Time { return u.renewAfter }
func (u *upnpMapping) External() netip.AddrPort { return u.external }
func (u *upnpMapping) MappingDebug() string {
return fmt.Sprintf("upnpMapping{gw:%v, external:%v, internal:%v, renewAfter:%d, goodUntil:%d, loc:%q}",
u.gw, u.external, u.internal,
u.renewAfter.Unix(), u.goodUntil.Unix(),
u.loc)
}
func (u *upnpMapping) Release(ctx context.Context) {
u.client.DeletePortMapping(ctx, "", u.external.Port(), upnpProtocolUDP)
}