Re: problem with 481 response to PRACK

Jim

 Thanks for the thurough test. I will commit the fix now. I am cc'ing the list so it is known that the problem is resolved.

Ranga
  ----- Original Message ----- 
  From: Barton, Jim 
  To: M. Ranganathan 
  Sent: Monday, April 09, 2007 4:31 PM
  Subject: RE: [nist-sip] problem with 481 response to PRACK


  Ranga,

   

  Your fix worked fine for us.  Sorry, It took a few days to get back to you. We had to run some load tests over the weekend to verify that the fix worked.

   

  Thanks for all your help!

   

  Jim Barton

   


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  From: M. Ranganathan [mailto:[email protected]] 
  Sent: Thursday, April 05, 2007 2:49 PM
  To: Barton, Jim
  Subject: Re: [nist-sip] problem with 481 response to PRACK

   

  Jim,

   

  1. Please use Dialog.sendReliableProvisionalResponse to send the response ( not ServerTransaction.sendResponse ).

   

  2. Please replace the SIPDialog.java file with the attached one and retest before I commit. 

   

  Thanks

   

  Ranga

    ----- Original Message ----- 

    From: Barton, Jim 

    To: M. Ranganathan 

    Sent: Wednesday, April 04, 2007 1:12 PM

    Subject: RE: [nist-sip] problem with 481 response to PRACK

     

    Ranga,

     

    Attached is a debug log plus an Ethereal trace that I believe shows the problem with 481.  If you need any other information we will be glad to provide it. 

     

    Thanks,

     

    Jim

     


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    From: M. Ranganathan [mailto:[email protected]] 
    Sent: Wednesday, April 04, 2007 11:03 AM
    To: Barton, Jim; [email protected]
    Subject: Re: [nist-sip] problem with 481 response to PRACK

     

    Jim,

     

    Please send it to me and if I can find something quick to fix, I will. If not, you can attempt a fix if you need something working by the end of April  ( I can look at it in detail after that date ).

     

    Also, I am encouraging people to join the jain-sip user mailing list and post from there as it has become problematic to maintain this mailing list.

     

    Regards,

     

    Ranga

      ----- Original Message ----- 

      From: Barton, Jim 

      To: [email protected] 

      Sent: Wednesday, April 04, 2007 11:37 AM

      Subject: [nist-sip] problem with 481 response to PRACK

       

       

      I have been finding that the nist stack sometimes returns a 481 response in response to PRACK under load conditions. The call flow was à INVITE ß TRYING ß- 183 à PRACK ß 481. Normally, the application would return an OK for the PRACK but randomly a 481 is generated from the stack.

       

      The debug log appears to indicate that that dialog does not exist:

       

      DEBUG - gov.nist.javax.sip.DialogFilter.processRequest(DialogFilter.java:192) [dialog = null]

      DEBUG - gov.nist.javax.sip.DialogFilter.processRequest(DialogFilter.java:329) [Processing PRACK for dialog null]

      DEBUG - gov.nist.javax.sip.DialogFilter.processRequest(DialogFilter.java:334) [Dialog does not exist PRACK sip:[email protected]:6060 SIP/2.0

       isServerTransaction = true]

      DEBUG - gov.nist.javax.sip.DialogFilter.processRequest(DialogFilter.java:341) [Sending 481 for PRACK - automatic dialog support is enabled -- cant find dialog!]

      DEBUG - gov.nist.javax.sip.stack.UDPMessageChannel.<init>(UDPMessageChannel.java:198) [Creating message channel 10.100.38.198/5060] 

       

      Does anyone have any idea how to resolve the problem? I have more debug information captured if anyone needs.

       

       

      Thanks,

       

      Jim Barton


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