[OpenSIPS-Users] TCP Errors
Bogdan-Andrei Iancu
bogdan at opensips.org
Wed Aug 6 17:07:10 CEST 2014
Hi,
Make a pcap of a call to see if the what's broken in that ACK.
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 02.07.2014 18:30, Gary Nyquist wrote:
> 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...
> BR
> - Gary
> *Sent:* Tuesday, July 01, 2014 at 8:05 AM
> *From:* "Liviu Chircu" <liviu at opensips.org>
> *To:* users at 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" <vladpaiu at opensips.org>
> *To:* users at lists.opensips.org
> *Cc:* gn62 at 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" <bogdan at opensips.org>
> *To:* "Gary Nyquist" <gn62 at gmx.us>
> *Cc:* "OpenSIPS users mailling list" <users at 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" <bogdan at opensips.org>
> *To:* "OpenSIPS users mailling list"
> <users at lists.opensips.org>, gn62 at 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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