Merge pull request #1192 from jkt628/sentinel-proxy

sentinel uses configured Dialer

Author: vmihailenco

sentinel.go

@@ -372,7 +372,8 @@ func (c *sentinelFailover) masterAddr() (string, error) {
 
 	for i, sentinelAddr := range c.sentinelAddrs {
 		sentinel := NewSentinelClient(&Options{
-			Addr: sentinelAddr,
+			Addr:   sentinelAddr,
+			Dialer: c.opt.Dialer,
 
 			Password: c.password,