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dns: use Direct dialer when dialer's domain equals to the query domain

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nadoo 2018-08-14 22:32:55 +08:00
parent fbb78d50d4
commit 205b4efac7
1 changed files with 5 additions and 0 deletions
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5
dns/client.go
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@ -127,6 +127,11 @@ func (c *Client) exchange(qname string, reqBytes []byte, preferTCP bool) (server
network = "tcp"
dialer := c.dialer.NextDialer(qname + ":53")
// if we are resolving the dialer's domain, then use Direct to avoid denpency loop
if strings.Contains(dialer.Addr(), qname) {
dialer = proxy.Direct
}
// If client uses udp and no forwarders specified, use udp
if !preferTCP && dialer.Addr() == "DIRECT" {
network = "udp"