Infinite authentication look on INVITE with invalid credentials

[arkadiam]

When making a call through a server that requires authenticating and using invalid username and password there is an infinite look condition in
func (s *DialogClientSession) WaitAnswer() function

INVITE->
<-407 Auth required
INVITE with Proxy-Authorization ->
<-407 Auth required
INVITE with Proxy-Authorization ->
<-407 Auth required
...

for{} loop should be interrupted with error after two 407 or 401 replies.

[arkadiam]

Sorry it's an issue in emiago/sipgo repo:

https://github.com/emiago/sipgo/blob/70f6a2116b9614b145e52eef19380c34287e485d/dialog_client.go#L215