[Freeswitch-users] How to troubleshoot "503 Maximum Calls In Progress"?

[Michael Collins]

Have you been able to reproduce this issue? Be sure to get the SIP traffic
captured along with the debug log.
-MC

On Mon, May 23, 2011 at 3:49 PM, Chris Fowler <chris at fowler.cc> wrote:

> Hi,
>
>
>
> On our Production FreeSWITCH box:
>
>
>
> FreeSWITCH Version 1.0.head (git-4c435ec 2011-03-14 11-54-08 -0500)
>
>
>
> UP 0 years, 14 days, 6 hours, 28 minutes, 44 seconds, 474 milliseconds, 751
> microseconds
>
> 12519 session(s) since startup
>
> 2 session(s) 0/30
>
> 1000 session(s) max
>
> min idle cpu 0.00/100.00
>
>
>
> At 14:30:37 a reloadxml command was issued.
>
> At 14:30:43 the box started rejecting all calls with 503 error.
>
> At 14:38 it started working again.
>
>
>
>
>
> Looking at the code I see three conditions can trigger this behavior:
>
>
>
>               if (sess_count >= sess_max || !sofia_test_pflag(profile,
> PFLAG_RUNNING) || !switch_core_ready()) {
>
>                         nua_respond(nh, 503, "Maximum Calls In Progress",
> SIPTAG_RETRY_AFTER_STR("300"), TAG_END());
>
>
>
>                         switch_log_printf(SWITCH_CHANNEL_LOG,
> SWITCH_LOG_CRIT, "No more sessions allowed at this time.\n");
>
>
>
>                         goto done;
>
>                }
>
>
>
> Logs show it wasn’t lack of available sessions.  How can
> sofia_test_pflag(profile, PFLAG_RUNNING) or switch_core_ready() fail and
> busy the system?
>
>
>
> Thoughts? Thx, Chris.
>
>
>
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