Re: [OpenSIPS-Users] TCP Errors

Gary Nyquist Wed, 02 Jul 2014 08:31:00 -0700

Thanks Liviu for your advice,

Wondering how can this be fixed... it is just filling up the log files with hundreds of repeating lines.

Also, thinking how to stop the "out-of-dialog ACKs to 487 responses" to be generated in the first place (if it is the culprit indeed).

Any suggestion?

Thanks again...

- Gary

Sent: Tuesday, July 01, 2014 at 8:05 AM
From: "Liviu Chircu" <li...@opensips.org>
To: users@lists.opensips.org
Subject: Re: [OpenSIPS-Users] TCP Errors

Hello Gary, That "error" is most likely due to out-of-dialog ACKs to 487 responses (CANCEL scenarios). Thank you for reporting - it should actually be a debugging message. Best regards,

Liviu Chircu
OpenSIPS Developer
http://www.opensips-solutions.com

On 06/30/2014 07:00 PM, Gary Nyquist wrote:





Hi Vlad,

 

Thanks for taking up this issue.

1.  Yes.  tcp_async=1

2.  Running on CentOS ( 2.6.32-358.6.2.el6.x86_64 )

3.  It's occurring on every INVITE

 

May be unrelated to this bug; but I am also seeing error messages like:

ERROR:script_helper:run_helper_logic: failed to match dialog, ci '4E14BD6E-53B17A8F00026071-6B1EA700'

 

Thanks again...

BR

-Gary

 

Sent: Monday, June 30, 2014 at 5:06 AM

From: "Vlad Paiu" <vladp...@opensips.org>

To: users@lists.opensips.org

Cc: g...@gmx.us

Subject: Re: [OpenSIPS-Users] TCP Errors



Hello,



First of all, are you using the async_tcp option in your OpenSIPS script ?

Also, what architecture / OS are you running on ?

What steps are you taking in reproducing this ?



Best Regards,
Vlad Paiu
OpenSIPS Developer
http://www.opensips-solutions.com 
On 27.06.2014 19:59, Gary Nyquist wrote:



Thanks Bogdan for looking into it.

 

Here is the version:

opensips -V

version: opensips 1.11.1-tls (x86_64/linux)

flags: STATS: On, USE_TCP, USE_TLS, DISABLE_NAGLE, SHM_MEM, SHM_MMAP, PKG_MALLOC, F_MALLOC, USE_SHM_MEM, FAST_LOCK-ADAPTIVE_WAIT

ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535

poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.

git revision: dbc8653

main.c compiled on 16:17:43 Jun 26 2014 with gcc 4.4.7


 

Yes, this bug is reproducable.

When it appears, the log file instantly gets filled with hundreds of repeating lines like this:

 

Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]: DBG:core:handle_tcpconn_ev: data available on 0x7f40bcec7398 6

Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]: DBG:core:io_watch_del: io_watch_del op on index -1 6 (0x7dff20, 6, -1, 0x0,0x1) fd_no=110 called

Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]: ERROR:core:io_watch_del: BUG - trying to del fd 6 with flags 2 1

Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]: DBG:core:handle_tcpconn_ev: data available on 0x7f40bcec7398 6

Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]: DBG:core:io_watch_del: io_watch_del op on index -1 6 (0x7dff20, 6, -1, 0x0,0x1) fd_no=110 called

Jun 26 20:30:31 ip-10-0-0-30 /usr/sbin/opensips[15229]: ERROR:core:io_watch_del: BUG - trying to del fd 6 with flags 2 1

 

Thanks again for your help.

 

BR

-Gary

 

 


Sent: Thursday, June 26, 2014 at 10:56 AM

From: "Bogdan-Andrei Iancu" <bog...@opensips.org>

To: "Gary Nyquist" <g...@gmx.us>

Cc: "OpenSIPS users mailling list" <users@lists.opensips.org>

Subject: Re: [OpenSIPS-Users] TCP Errors



Hi,



That bug log actually says OpenSIPS tries to remove a connection marked as READ from a list for WRITEs :)..



I will look into that. What exact version do you use (opensips -V) ? also, can you reproduce this  bug ?



Thanks and regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 25.06.2014 20:27, Gary Nyquist wrote:




Thanks Bogdan for the detailed reply.

 

I implemented your advice. 

Those error messages are now gone.

 

But seeing a new error now; not sure if it is related to that...

 

ERROR:core:io_watch_del: BUG - trying to del fd 36 with flags 2 1

 

Any advice?

 

BR

-Gary

 

Sent: Wednesday, June 25, 2014 at 5:54 AM

From: "Bogdan-Andrei Iancu" <bog...@opensips.org>

To: "OpenSIPS users mailling list" <users@lists.opensips.org>, g...@gmx.us

Subject: Re: [OpenSIPS-Users] TCP Errors



Hi,



Those messages say that OpenSIPS tried to open a TCP connection to a party which does not respond -> there was a timeout for connect in 10 seconds. Because of this blocking in connects, there were not more opensips workers available to handle other traffic.



So what you need to do is :

    - minimize the impact of the blocking connect - see my previous email on reducing the connect timeout

    - you may configure OpenSIPS not to open new TCP connect (but to reuse the existing ones, open by clients). See tcp_no_new_conn_bflag

            http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc96

    - try to understand the SIP patterns where such TCP connect fails so you can avoid them at script level.



Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 24.06.2014 21:34, Gary Nyquist wrote:




Hi,

 

The following lines are repeating in the log.

 

ERROR:core:tcp_blocking_connect: timeout 10 s elapsed from 10 s

ERROR:core:tcpconn_connect: tcp_blocking_connect failed

ERROR:core:tcp_send: connect failed

ERROR:tm:msg_send: tcp_send failed

 

INFO:core:send2child: no free tcp receiver, connection passed to the least busy one

 

Any guess, what could be the reason?

 

Best

--Gary

 


 

 
 

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Re: [OpenSIPS-Users] TCP Errors

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