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From Aaron Turner <>
Subject Re: Cannot negotiate authentication mechanisim
Date Sat, 03 Apr 2010 16:16:30 GMT
On Sat, Apr 3, 2010 at 12:30 AM, Daniel Shahaf <> wrote:
> Aaron Turner wrote on Fri, 2 Apr 2010 at 18:48 -0700:
>> So this works fine for me from Linux and TortioseSVN, but from
>> Windows/Cygwin when I try to check out my repo
>> (svn:// I get an error "svn: Cannot negotiate
>> authentication mechanisim".  I'm using SASL auth on the backend...
> That server only offers DIGEST-MD5 authentication.  Natively, Subversion
> only knows CRAM-MD5 (if the comments in the source are still accurate;
> `grep MD5 subversion/{svnserve,libsvn_ra_svn}/*`).  So I guess you need an
> svn binary compiled/configured for SASL support, or to configure the
> server to allow CRAM-MD5.

So: svn --version on the client says:

* ra_svn : Module for accessing a repository using the svn network protocol.
  - with Cyrus SASL authentication
  - handles 'svn' scheme

So I thought that meant it should support things like digest-md5.  Is
there a way to see what auth methods it does support?

The reason I forced digest-md5 auth was since cram-md5 doesn't support
data encryption.  Probably not the end of the world though.


Aaron Turner         Twitter: @synfinatic - Pcap editing and replay tools for Unix & Windows
Those who would give up essential Liberty, to purchase a little temporary
Safety, deserve neither Liberty nor Safety.
    -- Benjamin Franklin
"carpe diem quam minimum credula postero"

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