[sr-dev] [tracker] Task opened: Out of memory when a request is sent to itself

[sip-router]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Konstantin (Konstantin) 

Attached to Project - sip-router
Summary - Out of memory when a request is sent to itself
Task Type - Bug Report
Category - Core
Status - Unconfirmed
Assigned To - 
Operating System - Linux
Severity - High
Priority - Normal
Reported Version - 3.1
Due in Version - Undecided
Due Date - Undecided
Details - Recently we found that if any request is looped back until Max-Forwards (70) is reached, all package memory will be taken.
For example, in our case it was a PING request (request URI host part = that server address).
For the such requests we used the following processing in the configuration script:

record_route();
t_relay();


We are using kamailio 3.1.5 and start 50 child processes. 
Parameter -m is equal to 2048.

We gave load about 100 requests per seconds and we causes out of memory after 15-20 minutes.

Actually we expected that the kamailio will free memory for the messages after some time.
However it looks like the memory was not released.


More information can be found at the following URL:
https://sip-router.org/tracker/index.php?do=details&task_id=372

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