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ipn/ipnlocal: avoid unneeded initPeerAPIListener work if no changes

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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2021-04-09 11:13:42 -07:00
parent 20e7646b8d
commit fe23506471
1 changed files with 14 additions and 0 deletions
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14
ipn/ipnlocal/local.go
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@ -1600,6 +1600,20 @@ func (b *LocalBackend) initPeerAPIListener() {
b.mu.Lock()
defer b.mu.Unlock()
if len(b.netMap.Addresses) == len(b.peerAPIListeners) {
allSame := true
for i, pln := range b.peerAPIListeners {
if pln.ip != b.netMap.Addresses[i].IP {
allSame = false
break
}
}
if allSame {
// Nothing to do.
return
}
}
b.peerAPIServer = nil
for _, pln := range b.peerAPIListeners {
pln.Close()