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Use ControlD anycast IP if no system DNS found

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This commit is contained in:
Cuong Manh Le
2023-08-09 23:54:23 +07:00
committed by Cuong Manh Le
parent 48a780fc3e
commit fa3af372ab
1 changed files with 7 additions and 0 deletions
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resolver.go
+7
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@@ -29,6 +29,13 @@ const (
var bootstrapDNS = "76.76.2.0" var bootstrapDNS = "76.76.2.0"
var or = &osResolver{nameservers: nameservers()} var or = &osResolver{nameservers: nameservers()}
func init() {
if len(or.nameservers) == 0 {
// Add bootstrap DNS in case we did not find any.
or.nameservers = []string{net.JoinHostPort(bootstrapDNS, "53")}
}
}
// Resolver is the interface that wraps the basic DNS operations. // Resolver is the interface that wraps the basic DNS operations.
// //
// Resolve resolves the DNS query, return the result and the corresponding error. // Resolve resolves the DNS query, return the result and the corresponding error.