More precisely, this accepts domain labels with an underscore in
the middle (i.e. not at the start or the end of the label). This
is needed to perform complex CNAME chain resolution in certain
VPN networks.
the issue is that the BSD implementation doesn't accept a call like:
getaddrinfo(SERVER_NAME, "9999", NULL, &res);
because if will reject a numerical string in the second parameter if no hints are explicitely
provided. This technically doesn't violate POSIX but might make porting Linux software a bit
difficult. For more details see:
http://groups.google.com/group/android-ndk/browse_thread/thread/818ab9c53f24c87
also comment debugging printf() calls which shouldn't be there.
The current solution is to read the net.dns.search property,
and expand the list during the resolve initialization. In the
future, we could implement search list per process.
Update: refine the code accordingly.
Update: remove unnecessary code.
Update: remove the unused variable.
