That’s a good idea. But unfortunately blink client does not support “OPTIONS” Allow: SUBSCRIBE, NOTIFY, PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, MESSAGE, REFER Only way is to do it the hard way - Keep track of messages sent by an endpoint and keep it alive as long as the server receives them. One question about dialog module in this regard – In “How it works” section in the module description, it says - “The dialog timeout is reset each time a sequential request is processed.” What does this mean? - Only request at SIP level for that call sent by the client causes reset of the timer? Or - Is the module smart enough to consider MSRP message sent from that endpoint during that call as well? Thanks for your clarification, Pranathi From: Daniel-Constantin Mierla [mailto:miconda@gmail.com] Sent: Friday, November 18, 2016 2:26 AM To: Pranathi Venkatayogi; Kamailio (SER) - Users Mailing List Cc: Mick McGrellis Subject: Re: Is there a way to detect inactive MSRP chat sessions without using SIP session timers Hello, see dialog module - maybe it works solving your problem by sending OPTIONS keepalives within dialogs. Cheers, Daniel On 17/11/16 19:02, Pranathi Venkatayogi wrote: Hi, I am using MSRP feature of Blink client. I want to track when the chat starts and ends so I can free up server resources. Apparently Blink client does not send BYE when MSRP chat window closes. It does not support SIP session timers even. So potential use of SIP session timers (sst and dialog modules) is ruled out. Only possible way is to track every message that goes through the server and keep the session alive. If no message comes within “expiry time period”, server can send “bye” to all parties and tear up the session. Can you please comment if there are other approaches to solve this problem? If not, are they any modules that will help me implement the above approach easily? Thanks Pranathi -- Daniel-Constantin Mierla http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio Advanced Training, Berlin, Nov 28-30, 2016 - http://www.asipto.com