[asterisk-bugs] [JIRA] (ASTERISK-26561) chan_unistim on 11, 13, 14, UDP (rtp) ports left unclosed indefinitely

[Asterisk Team (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-26561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=233438#comment-233438 ] 

Asterisk Team commented on ASTERISK-26561:
------------------------------------------

Thanks for creating a report! The issue has entered the triage process. That means the issue will wait in this status until a Bug Marshal has an opportunity to review the issue. Once the issue has been reviewed you will receive comments regarding the next steps towards resolution.

A good first step is for you to review the [Asterisk Issue Guidelines|https://wiki.asterisk.org/wiki/display/AST/Asterisk+Issue+Guidelines] if you haven't already. The guidelines detail what is expected from an Asterisk issue report.

Then, if you are submitting a patch, please review the [Patch Contribution Process|https://wiki.asterisk.org/wiki/display/AST/Patch+Contribution+Process].

> chan_unistim on 11, 13, 14, UDP (rtp) ports left unclosed indefinitely
> ----------------------------------------------------------------------
>
>                 Key: ASTERISK-26561
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26561
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_unistim
>    Affects Versions: 11.24.1, 13.12.1, 14.1.1
>         Environment: Linux ARM (raspberry, banana, orange pi), Linux Intel X86. 
> Debian Linux, gcc/g++ as from standard Debian repos. Standard configure options (minus xml-doc). No customisation, standard configure, make install, test. No compile error work-arounds. 
>            Reporter: Jason
>
> A Nortel UNISTIM protocol sets, when finished with any audio related operation, will leave its UDP (rtp) ports hung on the server. A subsequent call/use of an inbuilt Asterisk function requiring rtp ports be opened creates two more ports for the rtp streams. Ending the call by any means leaves another two UDP ports, one always with a measurable number of bytes in the Recv Queue. All versions exhibit the exact same issue. This quickly results in udp port exhaustion, and the entire Asterisk system is without udp autio paths. This is on all of the above platforms mentioned. I'm amazed nobody has come across this. Being we use a low (100) number of udp ports to work with other systems, as opening 65534 is not an option, and avoiding the issue, this is noticed easily. The issue can be repeated easily, with a unistim set, and asterisk, and a single prompt even, or a call to any channel. From the shell, issuing "netstat -l" shows listening ports as defined in rtp.conf sitting there, stacking up (on unistim calls, not any other protocol) and never released until an asterisk kill. 



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