func (conn *SSHRawConnection) RemoteResolve(name string) ([]net.IP, error) {
if raw, err := conn.GetClientConn(false); nil == err {
dial := func(net, addr string, timeout time.Duration) (net.Conn, error) {
return raw.Dial(net, addr)
}
options := &godns.LookupOptions{
DNSServers: godns.GoogleDNSServers,
Net: "tcp",
CacheTTL: godns.DNS_CACHE_TTL_SELF,
DialTimeout: dial,
}
return godns.LookupIP(name, options)
} else {
return nil, err
}
return nil, nil
}
func trustedDNSLookup(host string) (string, bool) {
net := "tcp"
//for DNSEncrypt
if len(trustedDNS) > 0 && trustedDNS[0] == "127.0.0.1" {
net = "udp"
}
options := &godns.LookupOptions{
DNSServers: trustedDNS,
Net: net,
CacheTTL: godns.DNS_CACHE_TTL_SELF,
OnlyIPv4: true}
if ips, err := godns.LookupIP(host, options); nil == err {
for _, ip := range ips {
if nil != ip.To4() {
return ip.String(), true
}
}
}
return host, false
}