you can try my MSRP proxy code

[root@proxy-us-west-2-intrado-1 ~]# cat /etc/kamailio/msrp-proxy.cfg tcp_accept_no_cl=yes tcp_connection_lifetime=1810

loadmodule "msrp.so"

modparam("htable", "htable", "msrp=>size=16;") # "msrpcallid" table we use to be pass MSRP session related to call modparam("htable", "htable", "msrpcallid=>size=16;")

route[MSRP_INJECT_PROXY] { if (!sdp_with_media("message")) { return; }

$avp(sessid) = $sht(msrpcallid=>$ci::sessid); if( $avp(sessid) == $null) { $var(cnt) = $var(cnt) + 1; pv_printf("$avp(sessid)", "s.$(pp).$(var(cnt)).$(RANDOM)"); $sht(msrpcallid=>$ci::sessid) = $avp(sessid); }

xlog("L_INFO", "$ci|log|injecting Kamailio in MSRP path with session_id: $avp(sessid)\n"); search_append_body("a=path:msrps://", $RAi + ":2856/" + $avp(sessid) + ";tcp msrps://"); search_append_body("a=path:msrp://", $RAi + ":2855/" + $avp(sessid) + ";tcp msrp://");

if (!isflagset(FLAG_SESSION_PROGRESS)) { $sht(msrp=>$avp(sessid)::call_id) = $ci; } }

event_route[msrp:frame-in] { msrp_reply_flags("1");

$avp(sessid) = $msrp(sessid);

if (msrp_is_reply()) { route(UPDATE_MSRP_CONNECTION_DATA); } else if ($msrp(method)=="SEND" || $msrp(method)=="REPORT") { if ($msrp(nexthops)>1) { if ($msrp(method)!="REPORT") { msrp_reply("200", "OK"); } msrp_relay(); exit; }

xlog("L_INFO", "$ci|log|Status of MSRP caller session_id: $avp(sessid)\n"); if($sht(msrp=>$avp(sessid)::call_id) == $null) { if ($msrp(method)!="REPORT") { msrp_reply("481", "Session-does-not-exist"); } exit; } else if($msrp(method)!="REPORT") { msrp_reply("200", "OK"); }

route(UPDATE_MSRP_CONNECTION_DATA); } else { msrp_reply("501", "Request-method-not-understood"); } }

route[UPDATE_MSRP_CONNECTION_DATA] { # Updating current connection data for responses $sht(msrp=>$msrp(prevhop)::srcaddr) = $msrp(srcaddr); $sht(msrp=>$msrp(prevhop)::srcsock) = $msrp(srcsock);

# Try get destination connection data $avp(srcaddr) = $sht(msrp=>$msrp(nexthop)::srcaddr); $avp(srcsock) = $sht(msrp=>$msrp(nexthop)::srcsock); xlog("L_INFO", "$ci|log|destination connection data, srcaddr $avp(srcaddr), srcsock $avp(srcsock)\n");

if ($avp(srcaddr) == $null || $avp(srcsock) == $null) { xlog("L_INFO", "$ci|log|no destination msrp connection data, try relay message for session_id: $avp(sessid)\n"); msrp_relay(); exit; } msrp_relay_flags("1"); msrp_set_dst("$avp(srcaddr)", "$avp(srcsock)"); xlog("L_INFO", "$ci|log|relaying msrp message for session_id '$var(sessid)' via socket $avp(srcsock) to $avp(srcaddr)\n"); msrp_relay(); }

On Tue, Mar 31, 2020 at 4:10 PM Sefa Cebe sefacebe1@gmail.com wrote:

Of course, I added the following lines to original kamailio.cfg file. My aim was to change nexthop or change destination address which comes inside msrp frame. If I could do this, I can send MSRP messages to wherever I wanted. However, It doesn't let me to manipulate the variables inside msrp frame. By doing $msrp(nexthop) = something or using msrp_set_dst function.

#$msrp(nexthop) = ("msrp://192.168.1.100:30000/r02XBu00;tcp"); #xdbg("============ nexthop after modify\n"); #xdbg("============ nexthop: [$msrp(nexthop)]\n"); #msrp_set_dst("msrp://192.168.1.100:30001","tcp:192.168.1.110:64066"); xdbg("============test===========\n"); #$sht(msrp(nexthop))="msrp://192.168.1.100:30001"; $sht(msrp=>$var(sessid)::nexthop) = ("msrp:// 192.168.1.100:30000/r02XBu00;tcp"); xdbg("============ nexthop: [$msrp(nexthop)]\n"); xdbg("============checkcontrol\n"); msrp_relay(); msrp_reply("200", "OK");

exit;

Sergey Safarov s.safarov@gmail.com, 31 Mar 2020 Sal, 04:26 tarihinde şunu yazdı:

...

Could you share your minimal config and related logs. This will be interest for me to look.

On Tue, Mar 31, 2020 at 2:11 PM Sefa Cebe sefacebe1@gmail.com wrote:

...

Hello,

I'm using Kamailio MSRP module as a MSRP relay, It works successfully when I send one-to-one MSRP messages. I am having trouble while sending msrp messages to multiple receivers. My question is that can I use this module to forward msrp messages not just one receiver, but multiple receivers? Can this module be used like MSRP switch?

Thanks in advance.

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