[OpenSIPS-Users] Opensips doesn't react to 200 on BYE

[Daniel Zanutti]

Hi Daniel

SIPP is a litte tricky to work with proxies, you need to double check
routes and Via headers.

Here is what I'm using on BYE:

      BYE [next_url] SIP/2.0
      Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
      [routes]
      From: <sip:[$1]@[$2]:[local_port]>;tag=[pid]SIPpTag00[call_number]
      To: <sip:[field0]@[$2]:[remote_port]>[peer_tag_param]
      Call-ID: [call_id]
      CSeq: 2 BYE
      Contact: sip:sipp@[local_ip]:[local_port]
      Max-Forwards: 70
      Subject: Performance Test
      Content-Length: 0

Using these vars:
      <assignstr assign_to="1" value="fromuser" />
      <assignstr assign_to="2" value="fromdomain" />

About Opensips, you can manipulate the BYE on loose_route and send anything
you want, but you have to make sure you don't break something else. Like
this:

if(loose_route())
{
        ...
if (is_method("BYE"))
{
xlog("L_NOTICE", "LOG BYE -> SEND 200 OK");
sl_send_reply("200", "OK");
}
        ...
}

On Thu, Mar 17, 2016 at 10:35 AM, Daniel Moreira Yokoyama <
moreira.yokoyama at gmail.com> wrote:

> Hi.
>
> During stress tests (using SIPP as UAC and UAS) Opensips receives a BYE
> request from UAC and relays it to UAS.
>
> The problem is, when the UAS responds 200 to it, Opensips seems to be
> ignore it (may it be because of it misses it among the thousands of other
> messages being exchanged, may it be for any other reason I can't figure
> out).
>
> The RFC says that on BYE, in case of a 4xx or a timeout, the dialog should
> be considered terminated... but what opensips does in this scenario is to
> retry the BYE a couple of times (and SIPP seems to ignore it, once it
> consider the dialog finished, i guess) and finally opensips sends a 408 to
> the UAC.
>
> The way I see it, unless I'm missing something, I should be able to react
> to a BYE by immediately send a 200 to the UAC despite of what happens
> between opensips and UAS (accodingly to what I learn from the RFC). And,
> concerning to the UAS, Opensips also should send the BYE and consider the
> dialog finished regardless of receiving the 200 or not (it should not try
> to send the BYE again).
>
> If I'm right, how should I set opensips to behave this way?
>
> If I'm wrong, what should be the way to handle this scenario?
>
> Atenciosamente,
>
> Daniel Moreira Yokoyama.
> @dmyoko
> http://twitter.com/dmyoko
>
> TrafficTalks
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