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ipn/ipnlocal: add more logging for initializing peerAPIListeners

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On Windows and Android, peerAPIListeners may be initialized after a link change.
This commit adds log statements to make it easier to trace this flow.

Updates #14393

Signed-off-by: Percy Wegmann <percy@tailscale.com>
This commit is contained in:
Percy Wegmann 2025-03-24 15:49:58 -05:00
parent 156cd53e77
commit 4485722ad1
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GPG Key ID: 29D8CDEB4C13D48B
1 changed files with 4 additions and 1 deletions
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5
ipn/ipnlocal/local.go
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@ -958,7 +958,9 @@ func (b *LocalBackend) linkChange(delta *netmon.ChangeDelta) {
if peerAPIListenAsync && b.netMap != nil && b.state == ipn.Running {
want := b.netMap.GetAddresses().Len()
if len(b.peerAPIListeners) < want {
have := len(b.peerAPIListeners)
b.logf("linkChange: have %d peerAPIListeners, want %d", have, want)
if have < want {
b.logf("linkChange: peerAPIListeners too low; trying again")
b.goTracker.Go(b.initPeerAPIListener)
}
@ -5369,6 +5371,7 @@ func (b *LocalBackend) initPeerAPIListener() {
ln, err = ps.listen(a.Addr(), b.prevIfState)
if err != nil {
if peerAPIListenAsync {
b.logf("possibly transient peerapi listen(%q) error, will try again on linkChange: %v", a.Addr(), err)
// Expected. But we fix it later in linkChange
// ("peerAPIListeners too low").
continue