[Libvncserver-common] x11vnc not working with -threads and IPv6

[Tobias D. <doe...@un...>]

Hi,

I just noticed that x11vnc/libvncserver is not working with thread support 
enabled and IPv6. It just hangs forever in listenerRun() (inside the accept() 
call). When running x11vnc with "-threads" and do "telnet ::1 5900" (or 
localhost instead of ::1 with IPv6 configured accordingly) I get

# telnet ::1 5900
Trying ::1...
Connected to ::1.
Escape character is '^]'.

But nothing more happens. When terminating x11vnc, it correctly 
says "Connection closed by foreign host.".

Obviously a different code path is taken without thread support so everything 
works well. Am I wrong or is a listen() missing in listenerRun() ?

I do not plan to actively use IPv6 support right now but just wanted to let 
you know about this issue.

Best regards

Toby