DAV and HTTP_USER_AGENT

[st...@thecityside.com]

Hi All,

I'm trying to do a check out from an svn repo over DAV. The problem is that I'm stuck behind a firewall that I have no control over. I had posted here earlier and was told that if i went with DAV over ssl, the firewall won't beable to see the new http commands that DAV users thus the firewall may not be able to stop the transaction. Currently the svn repo is running on top of ssl so when I do this in a browser: 

https://www.mydomain.com:/svn/repo/trunk/my_src_dir

I'm able to see the repo, but, when I try to do a checkout from the command line I get this:

svn: RA layer request failed
svn: PROPFIND request failed on '/svn/repo/trunk/myapp'
svn: PROPFIND of '/svn/repo/trunk/myapp': could not connect to server (htt
ps://www.mydomain.com)

so I have a theory and I'm hoping someone here can tell me if I'm on target or if i'm just all washed up.

Could it be that the firewall is checking the http/dav header HTTP_USER_AGENT prop and seeing that it is not a browser and rejecting the connection? And if it is, is there a way to configure svn or dav to use a different value for the HTTP_USER_AGENT prop.?

-TIA-

-Scott-