PJ_ERESOLVE error in Windows Mobile

[bennylp]

See mailing list discussions:

• ​http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/2008-January/001408.html
• ​http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/2008-January/001435.html

[nanang]

No network connection case

After performed some tests trying to reproduce the problem,
I caught the PJ_ERESOLVE error only when no network connection is active,
other condition resulted fine.

Tests performed:

• call with and without registration.
• call with and without username in the URI.
• registration with IP address and hostname.

The problem is rooted from failure of gethostbyname(IP_ADDR) when no network connection is active. So the problem should be fixed by checking if the input is already IP address, pj_getaddrinfo() skips the pj_gethostbyname.

Attachment 'ticket 458.patch' contains:

• Added check if param 'nodename' for pj_getaddrinfo() is already IP address
• Added check if iteration interface gives no result, return PJ_ENOTFOUND

[bennylp]

Patch committed in:

r1743:

• enum_interface() should return non-PJ_SUCCESS if it does not find any interface

r1744:

• pj_getaddrinfo() should return success if IP address is given

[nanang]

In 5319:

Fix #1925: pj_getaddrinfo() should invoke getaddrinfo() even when IP address is inputted, except on Windows Mobile platforms (see #458).