Good day,
I've created a test SIP UA with Sofia and I'm attempting to register
with a Microsoft Office Communications Server 2007 server and I'm having
some issues doing some checks with the au_scheme.
I've set a breakpoint in my event callback function and when I receive a
401 Unauthorized response from the OCS server I can see that the
au_scheme is a const char * set to NTLM however when I step through my
code and run the following check it fails:
if (sip->sip_www_authenticate->au_scheme == "NTLM") {
do something ...
}
I've also tried a NULL terminated comparison ("NTLM\0") and just == "N"
and neither of those work either.
Am I missing something simple?
Also, I'm trying to do NTLM authentication according to
http://download.microsoft.com/download/1/6/F/16F4E321-AA6B-4FA3-8AD3-E94
C895A3C97/%5BMS-SIPAE%5D.PDF but OCS2007 can be configured to use either
NTLM or Kerberos for its authentication scheme therefore there are 2
WWW-Authenticate headers in the 401 Unauthorized response I receive from
the server however only NTLM is displayed in the parsed sip structure.
Is au_next supposed to have the next au_scheme? If so, it's empty in my
case. Why would that occur?
Any help is appreciated.
Regards,
Andy.
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