[OpenSIPS-Users] Load Balancer Failing on search_body - Looks okay?

[Bogdan-Andrei Iancu]

Hi Alan,

So if I understand correctly, the load_balance() function fails and you 
send the 503 from the script ? if so, do you get anything relevant in 
logs (about the failure)? try to set debug=6 to get more info (not 
recommended if a production system).

Regards,
Bogdan

On 04/11/2011 05:22 AM, Alan Frisch wrote:
> For some odd reason my OpenSIPs load_balancer module seems to fail
> with certain clients.  Works fine with Asterisk and some other
> servers, but have had the occasional client get a 503 returned to it.
> In this case, it's a SIP application for an Android phone... I get a
> "bug - cannot find request resource in dst" in my logs.
>
> Relevant OpenSIPs code is below.  I'm searching for PCMU and PCMA, for
> some reason the tutorial uses search_body with "G711" but you never
> see G711 in SDP, AFAIK.
>
> if (!search_body("[Pp][Cc][Mm][Uu]")&&  !search_body("[Pp][Cc][Mm][Aa]")) {
>                  if (!load_balance("1","transc;pstn","1"))
>                  {
>                          t_reply("503", "Circuit Unavailable - TP");
>                          exit;
>                  }
>          } else {
>                  if (!load_balance("1","pstn","1"))
>                  {
>                          t_reply("503", "Circuit Unavailable - P");
>                          exit;
>                  }
>          }
> }
>
> The incoming SDP is:
>
> v=0
> o=- 3511475179 3511475179 IN IP4 99.28.22.29
> s=pjmedia
> c=IN IP4 99.228.252.229
> t=0 0
> a=X-nat:8
> m=audio 4000 RTP/AVP 0 8 18 101
> a=rtcp:4001 IN IP4 99.28.22.29
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:18 G729/8000
> a=fmtp:18 annexb=no
> a=sendrecv
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-15
>
>
> My LB list looks like this:
>
> Destination:: sip:x.x.x.10:5060 id=1 group=1 enabled=yes auto-re=on
>          Resource:: pstn max=30 load=5
>          Resource:: transc max=30 load=1
> Destination:: sip:x.x.x.11:5060 id=10 group=1 enabled=yes auto-re=on
>          Resource:: pstn max=40 load=7
>          Resource:: transc max=40 load=2
>
> The destination machines in the LB list are not loaded down but the
> call falls down to the second part (since no transcoding is needed)
> but then fails totally.  Is there a way to find out what resource it
> is trying to look for?
>
> Any help is appreciated!
>
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>


-- 
Bogdan-Andrei Iancu
OpenSIPS eBootcamp - 2nd of May 2011
OpenSIPS solutions and "know-how"