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Tidy up code slightly

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This commit is contained in:
Charlie Jonas 2021-08-16 18:39:42 +01:00
parent be7705efc3
commit f64f68d5a9
1 changed files with 5 additions and 7 deletions
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12
src/models/constants.go
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@ -39,7 +39,6 @@ func init() {
break break
} }
} }
var err error var err error
DEFAULT_RELAY, err = lookup(DEFAULT_RELAY) DEFAULT_RELAY, err = lookup(DEFAULT_RELAY)
if err == nil { if err == nil {
@ -60,23 +59,22 @@ func lookup(address string) (ipaddress string, err error) {
if !INTERNAL_DNS { if !INTERNAL_DNS {
return localLookupIP(address) return localLookupIP(address)
} }
result := make(chan string, len(publicDns)) result := make(chan string, len(publicDns))
for _, dns := range publicDns { for _, dns := range publicDns {
go func(dns string) { go func(dns string) {
s, _ := remoteLookupIP(address, dns) s, err := remoteLookupIP(address, dns)
result <- s if err == nil {
result <- s
}
}(dns) }(dns)
} }
for i := 0; i < len(publicDns); i++ { for i := 0; i < len(publicDns); i++ {
ipaddress = <-result ipaddress = <-result
if ipaddress != "" { if ipaddress != "" {
return return
} }
} }
err = fmt.Errorf("failed to resolve %s: all DNS servers exhausted", address)
err = fmt.Errorf("failed to lookup %s at any DNS server", address)
return return
} }