Logging Subversion client HTTP requests

Hello,

I am writing a small SubVersion client library independent of the svn
client command.

My library works well but for some reason it does not work with a
certain SSL server that is not under my control. It returns error 400. I
assume I am sending some malformed commands.

On the other hand the svn client command works well. I tried to use
strace to see what svn does different but since it is all in SSL I
cannot see the HTTP requests and responses in the strace output because
it is all encrypted.

Is there a way to log the svn client HTTP traffic to a file so I can
examine and compare the requests being sent and responses being received?

-- 
Regards,
Manuel Lemos