Re: [sr-dev] MSLIO module issue in Kamailio3.1 behind NAT

Hi Daniel,

Thanks for your advice. I uncomment #!define WITH_AUTH and now mslio is working fine.

However, some UA sent two REGISTER when connecting to Kamailio, and it turned to be the result that the offline messages were dumped for twice.

I tried to use if(registered("location")) to detect that whether it is the initial register but failed. registered("location") always returns false.

Before , when using OpenSips, registered("location","$avp(s:fu)","$ci") works fine. But at that time ,no NAT support at all.

Any idea for this issue??

Thank you very much.

Coca

2011/7/27 Daniel-Constantin Mierla miconda@gmail.com

Hello,

can you watch all network interfaces with ngrep and see if the messages are relayed? It may happen that they are looped due to the address in r-uri and then challenged for authentication. If so, then allow all requests from your server ip/port without authentication.

Cheers, Daniel

On 7/26/11 10:04 PM, Coca wrote:

Hi list,

I have Kamailio running behind NAT. (Amazon EC2)

When I use mslio module, storing messages for offline contact is working fine, however the stored messages are never sent to the contacts when they get online.

My configuration is as below. Any kind of help will be great appreciated.

Thank you!

---

loadmodule "msilo.so" ... modparam("msilo", "add_date", 0) modparam("msilo", "db_url",DBURL) ...

route[REGISTRAR] { if (is_method("REGISTER")) { if(isflagset(FLT_NATS)) { setbflag(FLB_NATB); # uncomment next line to do SIP NAT pinging setbflag(FLB_NATSIPPING); } $avp(s:fu) = $fu; $var(initialregister) = 1; if( registered("location")){ $var(initialregister) = 0; } if (!save("location")) sl_reply_error();

if( !is_present_hf("Expires") || $(hdr(Expires){s.int})!=0 && $var(initialregister)==1 ){ # Send messages recieved while offline if (m_dump("$fu")){ xlog("L_INFO", "offline messages dumped for $avp(s:fu) \n"); } else{ xlog("L_INFO", "no offline messages dumped for $avp(s:fu) \n"); } } exit; } }

# USER location service route[LOCATION] { if (!lookup("location")) { switch ($rc) { case -1: ...

                           if (is_method("MESSAGE")) {
   $var(m_store_owner) = $tu;
                                   if (m_store("$var(m_store_owner)"))
                 {
                   xlog("L_INFO", "(MSILO_STORE) offline message

stored for $var(m_store_owner)\n"); if (!t_reply("202", "Accepted")) sl_reply_error(); } else { xlog("L_ERR","BUG: dropped an offline MESSAGE: M=$rm S=$rs D=$rr F=$fu T=$tu IP=$si ID=$ci UA=$ua Txt=$rb"); if (!t_reply("503", "Service Unavailable")) sl_reply_error(); };

           }

exit;

case -3: t_newtran(); t_reply("404", "Not Found"); exit; case -2: sl_send_reply("405", "Method Not Allowed"); exit; } }

# when routing via usrloc, log the missed calls also if (is_method("INVITE")) { setflag(FLT_ACCMISSED); } }

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-- Daniel-Constantin Mierla -- http://www.asipto.com Kamailio Advanced Training, Oct 10-13, Berlin: http://asipto.com/u/kathttp://linkedin.com/in/miconda -- http://twitter.com/miconda