[SR-Users] Simplest config possible [cont]

[Google - One]

Scrub question 2 - I think I have started on the stateful proxy... (still need to do ACK, BYE & CANCEL)

Diagnosis and analysis help still needed

Thanks

On 5 Oct 2014, at 16:51, "White, Phil" <whitepj at manx.biz> wrote:

> Hi All,
> 
> I've had an 'interesting' weekend reading RFCs and playing with kamailio. I'm making progress - however, I would be grateful for a little clarification.
> 
> I have sorted out a very basic stateless redirect proxy (config file below). I have cut it down to the absolute basic minimum - and it mostly appears to do what I would expect it to do. It does allow me to call any registered extension from my SIP softphone.
> 
> Problem 1: I have a Grandstream Budgetone 200, which will happily receive calls, but will not initiate any. Looking at a ngrep, it is ignoring the redirect, and sends out a flood of UDP INVITEs (also see below for details)
> Question: Is this the fault of my configuration, or the Grandstream behaving incorrectly?
> 
> Problem 2: I am having difficulty in working out which module and command I require to perform a function. Could someone please indicate the INVITE route in this file for a stateful proxy? 
> 
> Many thanks,
> 
> Phil
> 
> ---
> ## WARNING - DO NOT USE THIS IN A PRODUCTION SERVER. FOR TESTING & EDUCTION ONLY
> 
> debug=2
> fork=no
> log_stderror=yes
> 
> listen=192.168.1.254:5060
> 
> ####### Modules Section ########
> 
> mpath="/usr/lib/kamailio/modules/"
> loadmodule "pv.so"
> loadmodule "sl.so"
> loadmodule "usrloc"
>   modparam("usrloc", "db_mode", 0)
> loadmodule "xlog.so"
> loadmodule "registrar.so"
> 
> ####### Routing Logic ########
> 
> route{
>  if(method=="REGISTER") {
>   if (!save("location")) {
>    xlog("L_ERR", "**REGISTER: save failed \n");
>    sl_reply_error();
>   } else {
>    xlog("L_NOTICE", "  REGISTER rcvd $si:$sp \n");
>   };
>  };
> 
>  if(method=="INVITE") {
>   lookup("location");
>   switch ($retcode) {
>    case -1:
>    case -3:
>     sl_send_reply("404", "Not Found");
>     exit;
>    case -2:
>     sl_send_reply("405", "Not Found");
>     exit;
>   };
>   sl_send_reply("302","Redirect");
>  };
> 
>  if(method=="PUBLISH" || method=="SUBSCRIBE"){
>   xlog("L_INFO","REJECTION. We do not process $rm requests. \n");
>   route(No);
>  };
> }
> route[No] {
>  sl_send_reply(503, "Service Unavailable");
> }
> 
> ---
> 
> U 2014/10/05 16:38:04.925388 192.168.123.16:5060 -> 192.168.123.254:5060
> INVITE sip:105 at 192.168.123.10:58833;rinstance=0d82c786ca88f460;transport=UDP SIP/2.0.
> Via: SIP/2.0/UDP 192.168.123.16:5060;branch=z9hG4bKaf202530a743a053.
> From: "01782478349" <sip:111 at 192.168.123.254;user=phone>;tag=905632682e68e9b5.
> To: <sip:105 at 192.168.123.10:58833;rinstance=0d82c786ca88f460;transport=UDP>.
> Contact: <sip:111 at 192.168.123.16:5060;transport=udp;user=phone>.
> Supported: replaces, timer, 100rel, path.
> Session-Expires: 180.
> Min-SE: 90.
> Call-ID: 358a9652404b14ad at 192.168.123.16.
> CSeq: 63317 INVITE.
> User-Agent: Grandstream BT200 1.1.6.32.
> Max-Forwards: 70.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK.
> Content-Type: application/sdp.
> Content-Length: 407.
> <...SNIP...>
> U 2014/10/05 16:38:04.925895 192.168.123.254:5060 -> 192.168.123.16:5060
> SIP/2.0 302 Redirect.
> Via: SIP/2.0/UDP 192.168.123.16:5060;branch=z9hG4bKaf202530a743a053;rport=5060.
> From: "01782478349" <sip:111 at 192.168.123.254;user=phone>;tag=905632682e68e9b5.
> To: <sip:105 at 192.168.123.10:58833;rinstance=0d82c786ca88f460;transport=UDP>;tag=71d9875c03b727cbe0217d2db6ac2a49.422e.
> Call-ID: 358a9652404b14ad at 192.168.123.16.
> CSeq: 63317 INVITE.
> Contact: <sip:105 at 192.168.123.10:58833;rinstance=0d82c786ca88f460;transport=UDP>.
> Server: My SIP Server.
> Content-Length: 0.U 2014/10/05 16:38:04.954405 192.168.123.16:5060 -> 192.168.123.254:5060
> ACK sip:105 at 192.168.123.10:58833;rinstance=0d82c786ca88f460;transport=UDP SIP/2.0.
> Via: SIP/2.0/UDP 192.168.123.16:5060;branch=z9hG4bKaf202530a743a053.
> From: "01782478349" <sip:111 at 192.168.123.254;user=phone>;tag=905632682e68e9b5.
> To: <sip:105 at 192.168.123.10:58833;rinstance=0d82c786ca88f460;transport=UDP>;tag=71d9875c03b727cbe0217d2db6ac2a49.422e.
> Contact: <sip:111 at 192.168.123.16:5060;transport=udp;user=phone>.
> Supported: path.
> Call-ID: 358a9652404b14ad at 192.168.123.16.
> CSeq: 63317 ACK.
> User-Agent: Grandstream BT200 1.1.6.32.
> Max-Forwards: 70.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK.
> Content-Length: 0.
> .
> 
> U 2014/10/05 16:38:04.975398 192.168.123.16:5060 -> 192.168.123.254:5060
> INVITE sip:105 at 192.168.123.10:58833;rinstance=0d82c786ca88f460;transport=UDP SIP/2.0.
> Via: SIP/2.0/UDP 192.168.123.16:5060;branch=z9hG4bKa55f284fa742ad32.
> From: "01782478349" <sip:111 at 192.168.123.254;user=phone>;tag=9a25392722276c54.
> To: <sip:105 at 192.168.123.10:58833;rinstance=0d82c786ca88f460;transport=UDP>.
> Contact: <sip:111 at 192.168.123.16:5060;transport=udp;user=phone>.
> Supported: replaces, timer, 100rel, path.
> Session-Expires: 180.
> Min-SE: 90.
> Call-ID: f2989990cfa8525c at 192.168.123.16.
> CSeq: 1445 INVITE.
> User-Agent: Grandstream BT200 1.1.6.32.
> Max-Forwards: 70.
> Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK.
> Content-Type: application/sdp.
> Content-Length: 407.
> .
> .
> . etc...
> 
> 
> 
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