[Pidgin] #48: Make SIP/SIMPLE work with Microsoft Live Communication Server

[Pidgin]

#48: Make SIP/SIMPLE work with Microsoft Live Communication Server
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  Reporter:  MarkDoliner  |       Owner:  shulman      
      Type:  patch        |      Status:  new          
  Priority:  minor        |   Milestone:               
 Component:  SIMPLE       |     Version:  2.0          
Resolution:               |    Keywords:  MS LCS SIMPLE
   Pending:  0            |  
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Comment (by brianandrus):

 FWIW,
 I believe the way to find the appropriate server for LCS is to do a DNS
 query for the SRV record.
 Usually 2 of them depending upon if you are on a local network or coming
 from the internet.

 _sipfederationtls._tcp.domain.com (used for outside connections eg:
 internet)
 _sipinternaltls._tcp.domain.com (our internal sip protocol)
 This lookup will provide you the actual servername to connect to as well
 as the port.

 doing 'dig -t SRV _sipfederationtls._tcp.microsoft.com'
 gives us a line in there:

 ;; ANSWER SECTION:
 _sipfederationtls._tcp.microsoft.com. 3548 IN SRV 0 0 5061
 sipfed.microsoft.com.

 so the microsoft external OCS server is running on port 5061 at
 sipfed.microsoft.com
 Our login would be ad-user at microsoft.com but would be sent to
 sipfed.microsoft.com on tcp port 5061.

 It seems that we would want to do a query first for the _sipinternaltls
 and if it does not exist, lookup the _sipfederationtls SRV record.

 Anyway, I hope this helps. I would love to have pigin at least connect up
 for IMs to OCS 2007.

-- 
Ticket URL: <http://developer.pidgin.im/ticket/48#comment:87>
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