Comment 1 for bug 1133227

Looking at the code I've seen that the server returns some codes depending on
the failure or, if everything works fine, it returns what it got from the
client.

The potential problem here is the overlapping of return codes from the client
and the server. It looks like "1" can be returned both from the client and the
server on different failures. Hence, the server caller is unable to figure out
if the problem happened at the client or at the server without looking at the
logs.