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* (dnsforward): don't fail when default upstream is not set

This commit is contained in:
Andrey Meshkov 2020-09-09 18:12:11 +03:00
parent f8010902ce
commit 88c67764b9
1 changed files with 11 additions and 1 deletions
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12
dnsforward/config.go
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@ -187,7 +187,7 @@ func (s *Server) createProxyConfig() (proxy.Config, error) {
// Validate proxy config
if proxyConfig.UpstreamConfig == nil || len(proxyConfig.UpstreamConfig.Upstreams) == 0 {
return proxyConfig, errors.New("no upstream servers configured")
return proxyConfig, errors.New("no default upstream servers configured")
}
return proxyConfig, nil
@ -250,6 +250,16 @@ func (s *Server) prepareUpstreamSettings() error {
if err != nil {
return fmt.Errorf("DNS: proxy.ParseUpstreamsConfig: %s", err)
}
if len(upstreamConfig.Upstreams) == 0 {
log.Info("Warning: no default upstream servers specified, using %v", defaultDNS)
uc, err := proxy.ParseUpstreamsConfig(defaultDNS, s.conf.BootstrapDNS, DefaultTimeout)
if err != nil {
return fmt.Errorf("DNS: failed to parse default upstreams: %v", err)
}
upstreamConfig.Upstreams = uc.Upstreams
}
s.conf.UpstreamConfig = &upstreamConfig
return nil
}