protocol sockets even if the resolved address may say otherwise

now the functions are named sendtftp() and recvtftp() instead.

unsigned short. Trying a typecast here to fix.

correct (and overly complicated) sourceforge bug tracker URL given the bug
report ID number.

being necessary for solaris builds)

inventing and providing our own. Hopefully this solves a HP-UX 11.00 problem.

added TFTP to the list of supported protocols

glibc versions, and with this patch applied it no longer shows up to me. The
problem was indeed a flaw that made curl use a file handle already closed.

of the end of a chunked-encoded POST request.

Should we do this for all targets?

have this check done on far too many places by now...