Semi-newbie, so flame throwers to singe only. ;-)

I'm using curl 7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5
OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 under CentOS 5.7, to transfer a
file a colleague develops, and has posted for HTTP access on his
website. I use the following to transfer the file only if the time-stamp
on the target machine is more recent than the current version on my machine:

/usr/bin/curl -v -Rso /home/username/setup.exe -z setup.exe
http://colleague machine URL/setup.exe

By and large, this has worked fine, but for some reason now, curl is not
completing the transfer. It will transfer some fraction of the file, and
then quit. It quits gracefully (no obvious error message), so I'm having
a problem figuring out what to look for. I've already got -v flagged for
verbose information on the transfer, but that doesn't give me any
indications that have been useful. The fact that curl is ending
gracefully i actually a problem, since there is no outward indication it
has 'quit' -- exccept that the setup.exe file is incomplete, and won't
install.

So,

1\ any suggestions as to what might be causing curl to stop
transferring? It does this intermittently, and the size/proportion fo
the file that does get transferred is variable (i.e., not always a
constant number of bytes).

2\ any extra flag(s) I can pass to curl to help me diagnose the problem?

Thanks *very much* in advance.
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Received on 2012-01-16