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gluetun/internal/dns/wait.go

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package dns
import (
"fmt"
"time"
)
func (c *configurator) WaitForUnbound() (err error) {
const maxTries = 10
const hostToResolve = "github.com"
for try := 1; try <= maxTries; try++ {
_, err := c.lookupIP(hostToResolve)
if err == nil {
return nil
}
c.logger.Warn("could not resolve %s (try %d of %d)", hostToResolve, try, maxTries)
time.Sleep(time.Duration(maxTries * 50 * time.Millisecond))
}
return fmt.Errorf("Unbound does not seem to be working after %d tries", maxTries)
}