Stefan, Answering your question, AstLinux does not have any tools to externally clean-up "ghost" SIP sessions.
Interesting problem, of course your 1 channel limit is at the heart of the problem. The SIP protocol will eventually clean-up these ghost sessions with the missing BYE, possibly a SIP guru here would know what timer and timeout would effect how long the session lives without a properly terminated BYE. There may be some SIP timer setting in Asterisk that would shorten the recovery time from a brokern SIP session, possibly if you added qualify=yes to your client peers ? Not sure if that would work. I assume you are using SIP over UDP, possibly if you used SIP over TCP the network stack would terminate the session sooner, again just a guess. Lonnie On Sep 1, 2016, at 8:04 AM, Stefan Ulm <s....@divus.biz> wrote: > Hi All, > > sometimes it happens, that SIP channels remain open, also if the call was > already closed. > There is one situation it can be reproduced quite well: power down the client > during it is in communication (the sip stack is immediately powered off > together with the client, normally by doing hard reset and it can’t send a > BYE to close the call correctly). The result is, that SIP channels remain > open and since we use a limitation of one channel per client, this becomes > problematic, since if the problem occurs, the corresponding client can’t > receive calls anymore, because of the reached limitation of 1 opened SIP > channel. > Sometimes this problem occurs also without powering down any client, but > actually we don’t know the cause for it. > Our idea is to implement a cleanup of the SIP channels, if the problem occurs. > Actually I make research to find a way to recognize such “ghost” SIP channels > and to close them. > Does astlinux offer any possibility to reach this target? > My very last way will be to create a deamon which scans the opened SIP > channels and with a timeout he can now if they are opened too long and force > the closing; of course if there is a simplier solution will be welcome. > > Best regards > > Stefan Ulm > Technical Department | Research & Development > stefan....@divus.eu > > > > > <image001.png> > > DIVUS Headquarters Pillhof 51 . I-39057 Eppan (Südtirol) . Tel. +39 0471 633 > 662 . Fax. +39 0471 631 829 > www.divus.eu . Privacy: http://www.divus.eu/media/DivusPrivacy.pdf ------------------------------------------------------------------------------ _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to pay...@krisk.org.
