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plugin/loop: fix loop detection when an upstream DNS server is not reachable #2255

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merged 1 commit into from
Oct 31, 2018
Merged

plugin/loop: fix loop detection when an upstream DNS server is not reachable #2255

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6 changes: 6 additions & 0 deletions plugin/loop/loop.go
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,12 @@ func (l *Loop) inc() {
l.i++
}

func (l *Loop) reset() {
l.Lock()
defer l.Unlock()
l.i = 0
}

func (l *Loop) setDisabled() {
l.Lock()
defer l.Unlock()
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1 change: 1 addition & 0 deletions plugin/loop/setup.go
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Expand Up @@ -42,6 +42,7 @@ func setup(c *caddy.Controller) error {

for time.Now().Before(deadline) {
if _, err := l.exchange(addr); err != nil {
l.reset()
time.Sleep(1 * time.Second)
continue
}
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