Android SipDemo example: exception with IO sending request

I tried to launch SipDemo on my Motorola xoom.

Registration pr开发者_如何学编程ocess on server has completed well. When I tried call to someone I have "SipException: IO Error sending request".

If I use CSipSimple with same account settings it works fine.

Have you any idea to resolve this trouble?

Thanks.

There is a weird trick on Android: the OS is inspecting all SIP packets (on port 5060) and will block if the format is not correct with UDP I/O exception. So I would suggest to have a look at the SIP message. Also make sure that you added network permission in your project manifest file.