3 Apr
2019
3 Apr
'19
7:34 p.m.
Hello,
I am trying to set up a WebRTC2SIP Gateway by using Kamailio and rtpengine.
So far, everything is working fine, I'm able to register an extension and
make a call, but for some reason, when i'm trying to call a WebRTC
extension from any SIP Extension Kamailio is sending INVITE, WebRTC
extension is sending back 200 OK, and then Kamailio is trying to send an
ACK through UDP protocol, and not through wss, as it's supposed to do. This
is how invite is looking:
INVITE sip:nl7oe4ss@vjbh7r4im6j7.invalid;transport=wss SIP/2.0
Record-Route: <sip:my-company.net
;transport=udp;ftag=as1789445c;lr=on;nat=yes>
Via: SIP/2.0/WSS 123.123.123.123:10443
;branch=z9hG4bKe655.29d7c135a302f3eb803902d4f5a8da7e.0
Via: SIP/2.0/UDP 192.168.50.237:5060
;received=192.168.50.237;branch=z9hG4bK7d2e534e;rport=5060
Max-Forwards: 70
From: "WebRTC" <sip:11@my-company.net>;tag=as1789445c
To: <sip:15@192.168.50.210:5060>
Contact: <sip:11@192.168.50.237:5060>
Call-ID: 7fc800de060197fa2315c93763873092(a)my-company.net
CSeq: 102 INVITE
User-Agent: Proxy
Date: Wed, 03 Apr 2019 17:11:41 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
PUBLISH, MESSAGE
Supported: replaces, timer
Alert-Info:
Content-Type: application/sdp
Content-Length: 596
Server: SIP Proxy
and then WebRTC app is replying with 200 OK:
SIP/2.0 200 OK
Record-Route: <sip:my-company.net
;transport=udp;ftag=as1789445c;lr=on;nat=yes>
Via: SIP/2.0/WSS 123.123.123.123:10443
;branch=z9hG4bKe655.29d7c135a302f3eb803902d4f5a8da7e.0
Via: SIP/2.0/UDP 192.168.50.237:5060
;received=192.168.50.237;branch=z9hG4bK7d2e534e;rport=5060
To: <sip:15@192.168.50.210:5060>;tag=dk4fa8ftt6
From: "WebRTC" <sip:11@my-company.net>;tag=as1789445c
Call-ID: 7fc800de060197fa2315c93763873092(a)my-company.net
CSeq: 102 INVITE
Contact: <sip:nl7oe4ss@vjbh7r4im6j7.invalid;transport=wss>
Allow: ACK,CANCEL,INVITE,MESSAGE,BYE,OPTIONS,INFO,NOTIFY,REFER
Supported: outbound
User-Agent: Proxy-WEBRTC
Content-Type: application/sdp
Content-Length: 901
and finally, Kamailio is trying to send this ack through UDP protocol:
ACK sip:nl7oe4ss@22.22.22.22:57421;transport=wss SIP/2.0
Via: SIP/2.0/UDP 192.168.50.237:5060;branch=z9hG4bK56363ddf;rport
Route: <sip:my-company.net;transport=udp;ftag=as1789445c;lr=on;nat=yes>
Max-Forwards: 70
From: "WebRTC" <sip:11@my-company.net>;tag=as1789445c
To: <sip:15@192.168.50.210:5060>;tag=dk4fa8ftt6
Contact: <sip:11@192.168.50.237:5060>
Call-ID: 7fc800de060197fa2315c93763873092(a)my-company.net
CSeq: 102 ACK
User-Agent: Proxy
Content-Length: 0
If i'm trying to force it through TLS, i'm receiving error:
get_send_socket2(): protocol/port mismatch (forced tls:123.123.123.123:10443,
to udp:22.22.22.22:23317)
Can someone point me in the right direction, please?
Thank you.
3 Apr
3 Apr
8:56 p.m.
Can you share your config file?
From: sr-users [mailto:sr-users-bounces@lists.kamailio.org] On Behalf Of Ilie Soltanici
Sent: quarta-feira, 3 de abril de 2019 14:34
To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
Subject: [SR-Users] WebRTC ACK Protocol
Hello,
I am trying to set up a WebRTC2SIP Gateway by using Kamailio and rtpengine. So far,
everything is working fine, I'm able to register an extension and make a call, but for
some reason, when i'm trying to call a WebRTC extension from any SIP Extension
Kamailio is sending INVITE, WebRTC extension is sending back 200 OK, and then Kamailio is
trying to send an ACK through UDP protocol, and not through wss, as it's supposed to
do. This is how invite is looking:
INVITE sip:nl7oe4ss@vjbh7r4im6j7.invalid;transport=wss SIP/2.0
Record-Route: <sip:my-company.net <http://my-company.net>
;transport=udp;ftag=as1789445c;lr=on;nat=yes>
Via: SIP/2.0/WSS
123.123.123.123:10443;branch=z9hG4bKe655.29d7c135a302f3eb803902d4f5a8da7e.0
Via: SIP/2.0/UDP
192.168.50.237:5060;received=192.168.50.237;branch=z9hG4bK7d2e534e;rport=5060
Max-Forwards: 70
From: "WebRTC" <sip:11@my-company.net <mailto:sip%3A11@my-company.net>
>;tag=as1789445c
To: <sip:15@192.168.50.210:5060 <http://sip:15@192.168.50.210:5060> >
Contact: <sip:11@192.168.50.237:5060 <http://sip:11@192.168.50.237:5060> >
Call-ID: 7fc800de060197fa2315c93763873092(a)my-company.net
<mailto:7fc800de060197fa2315c93763873092@my-company.net>
CSeq: 102 INVITE
User-Agent: Proxy
Date: Wed, 03 Apr 2019 17:11:41 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH,
MESSAGE
Supported: replaces, timer
Alert-Info:
Content-Type: application/sdp
Content-Length: 596
Server: SIP Proxy
and then WebRTC app is replying with 200 OK:
SIP/2.0 200 OK
Record-Route: <sip:my-company.net <http://my-company.net>
;transport=udp;ftag=as1789445c;lr=on;nat=yes>
Via: SIP/2.0/WSS
123.123.123.123:10443;branch=z9hG4bKe655.29d7c135a302f3eb803902d4f5a8da7e.0
Via: SIP/2.0/UDP
192.168.50.237:5060;received=192.168.50.237;branch=z9hG4bK7d2e534e;rport=5060
To: <sip:15@192.168.50.210:5060 <http://sip:15@192.168.50.210:5060>
>;tag=dk4fa8ftt6
From: "WebRTC" <sip:11@my-company.net <mailto:sip%3A11@my-company.net>
>;tag=as1789445c
Call-ID: 7fc800de060197fa2315c93763873092(a)my-company.net
<mailto:7fc800de060197fa2315c93763873092@my-company.net>
CSeq: 102 INVITE
Contact: <sip:nl7oe4ss@vjbh7r4im6j7.invalid;transport=wss>
Allow: ACK,CANCEL,INVITE,MESSAGE,BYE,OPTIONS,INFO,NOTIFY,REFER
Supported: outbound
User-Agent: Proxy-WEBRTC
Content-Type: application/sdp
Content-Length: 901
and finally, Kamailio is trying to send this ack through UDP protocol:
ACK sip:nl7oe4ss@22.22.22.22:57421;transport=wss SIP/2.0
Via: SIP/2.0/UDP 192.168.50.237:5060;branch=z9hG4bK56363ddf;rport
Route: <sip:my-company.net <http://my-company.net>
;transport=udp;ftag=as1789445c;lr=on;nat=yes>
Max-Forwards: 70
From: "WebRTC" <sip:11@my-company.net <mailto:sip%3A11@my-company.net>
>;tag=as1789445c
To: <sip:15@192.168.50.210:5060 <http://sip:15@192.168.50.210:5060>
>;tag=dk4fa8ftt6
Contact: <sip:11@192.168.50.237:5060 <http://sip:11@192.168.50.237:5060> >
Call-ID: 7fc800de060197fa2315c93763873092(a)my-company.net
<mailto:7fc800de060197fa2315c93763873092@my-company.net>
CSeq: 102 ACK
User-Agent: Proxy
Content-Length: 0
If i'm trying to force it through TLS, i'm receiving error:
get_send_socket2(): protocol/port mismatch (forced tls:123.123.123.123:10443
<http://123.123.123.123:10443> , to udp:22.22.22.22:23317
<http://22.22.22.22:23317> )
Can someone point me in the right direction, please?
Thank you.
4 Apr
4 Apr
12:58 a.m.
Hello,
Config is more or less like the standard one:
route[WITHINDLG] {
if (!has_totag()) return;
if (loose_route()) {
route(RURIALIAS);
if ( is_method("ACK") ) {
xlogl("L_INFO", "[$cfg(route)] ACK is forwarded statelessy\n");
route(NATMANAGE);
} else if (is_method("NOTIFY") ) {
# Add Record-Route for in-dialog NOTIFY as per RFC 6665.
route(RECORD_ROUTE);
}
xlogl("L_INFO", "[$cfg(route)] In Dialog loose_route,
Relaying\n");
route(RELAY);
exit;
};
if (is_method("SUBSCRIBE") && uri == myself) {
xlogl("L_INFO", "[$cfg(route)] in-dialog subscribe requests,
Checking
Dialog.\n");
route(PRESENCE);
exit;
}
if ( is_method("ACK") ) {
if ( t_check_trans() ) {
xlogl("L_INFO", "[$cfg(route)] ACK in transaction.
Relaying\n");
route(RELAY);
exit;
} else {
xlogl("L_WARN", "[$cfg(route)] ACK without matching transaction
... ignore and discard\n");
sl_send_reply("606", "Not Acceptable");
exit;
}
}
xlogl("L_WARN", "[$cfg(route)] Unknown Dialog\n");
sl_send_reply("404","Not Found");
exit;
}
route[RURIALIAS] {
if(isdsturiset() || ($du != "")) {
xlogl("L_INFO", "[$cfg(route)]: Destination URI is set, no
un-aliasing is needed\n");
return;
}
xlogl("L_INFO", "[$cfg(route)] --Start Route--\n");
xlogl("L_INFO", "[$cfg(route)]: Route using R-URI, any alias on R-URI
('$ru')?\n");
handle_ruri_alias();
switch ($rc) {
case -1:
xlogl("L_WARN", "[$cfg(route)]: Failed to handle alias of R-URI
$ru\n");
send_reply("400","Bad Request");
exit;
case 1:
xlogl("L_INFO", "[$cfg(route)]: Alias parsed, routing $rm from $fu
to $du\n");
break;
case 2:
xlogl("L_INFO", "[$cfg(route)]: Alias not found, routing $rm from
$fu to $ru\n");
break;
};
return;
}
route[NATMANAGE] {
if(has_body("application/sdp")) {
route(RTPMANAGE);
}
# Set FLB_NATB? Only in within-dialog request with nat=yes on Route
header initiated by AS
if (is_request() && has_totag() &&
check_route_param("nat=yes") &&
isflagset(FLS_FROM_ASTERISK)) {
setbflag(FLB_NATB);
}
# Return unless FLT_NATS or FLB_NATB are set
if (!(isflagset(FLT_NATS) || isbflagset(FLB_NATB))) {
xlogl("L_INFO", "[$cfg(route)] No endpoint is behind NAT,
return\n");
if(nat_uac_test("1")) {
xlogl("L_INFO", "[$cfg(route)] Contact is behind NAT,
Fixing\n");
fix_nated_contact();
}
return;
} else {
xlogl("L_INFO", "[$cfg(route)] One or both endpoints are behind
NAT, continue!\n");
}
# Add nat=yes in record-route? Only in initial requests when called
from branch_route
if (is_request() && !has_totag() && t_is_branch_route()) {
xlogl("L_INFO", "[$cfg(route)] Add nat=yes to record-route
(reason:
initial request called from branch route)\n");
add_rr_param(";nat=yes");
}
if (is_reply()) {
if(isbflagset(FLB_NATB)) {
fix_nated_contact();
}
}
}
route[RELAY] {
route(SETUP_BY_TRANSPORT);
if (is_method("INVITE|BYE|SUBSCRIBE|UPDATE")) {
if(!t_is_set("branch_route")) t_on_branch("MANAGE_BRANCH");
}
if (is_method("INVITE|SUBSCRIBE|UPDATE")) {
if(!t_is_set("onreply_route")) t_on_reply("MANAGE_REPLY");
}
if (is_method("INVITE")) {
if(!t_is_set("failure_route")) t_on_failure("MANAGE_FAILURE");
}
if (!t_relay()) {
sl_reply_error();
}
exit;
}
}
route[SETUP_BY_TRANSPORT] {
if ($ru =~ "transport=ws") {
xlogl("L_INFO","[$cfg(route)] Request going to WS");
if(sdp_with_transport("RTP/SAVPF")) {
xlogl("L_INFO","[$cfg(route)] Request going from WS to
WS");
rtpengine_manage("force trust-address replace-origin
replace-session-connection ICE=force");
t_on_reply("REPLY_WS_TO_WS");
return;
}
xlogl("L_INFO","[$cfg(route)] Request going to WS from AS");
rtpengine_manage("rtcp-mux-offer generate-mid DTLS=passive SDES-off
ICE=force RTP/SAVPF");
force_send_socket(tls:MY_EXTERNAL_IP_ADDR:10443);
t_on_reply("REPLY_FROM_WS");
}
else if ($proto =~ "ws") {
xlog("L_INFO", "Request coming from WS");
rtpengine_manage("rtcp-mux-demux DTLS=off SDES-off ICE=remove RTP/AVP");
t_on_reply("REPLY_TO_WS");
}
else {
xlog("L_INFO", "This is a classic phone call");
rtpengine_manage("replace-origin replace-session-connection");
t_on_reply("MANAGE_CLASSIC_REPLY");
}
}
onreply_route[REPLY_TO_WS] {
xlog("L_INFO", "Reply from softphone: $rs");
if (t_check_status("183")) {
change_reply_status("180", "Ringing");
remove_body();
exit;
}
if(!(status=~"[12][0-9][0-9]"))
return;
# rtpengine_manage("froc+SP");
xlogl("L_INFO","Fixing ICE/SAVPF Parameters");
rtpengine_manage("rtcp-mux-offer generate-mid DTLS=passive SDES-off
ICE=force RTP/SAVPF");
}
onreply_route[REPLY_FROM_WS] {
xlog("L_INFO", "Reply from webrtc client: $rs");
if(status=~"[12][0-9][0-9]") {
rtpengine_manage("force trust-address replace-origin
replace-session-connection ICE=remove RTP/AVP");
# rtpengine_manage("froc-sp");
route(NATMANAGE);
}
}
onreply_route[MANAGE_CLASSIC_REPLY] {
xlog("L_INFO", "Boring reply from softphone: $rs");
if(status=~"[12][0-9][0-9]") {
rtpengine_manage("replace-origin replace-session-connection");
# rtpengine_manage("co");
route(NATMANAGE);
}
}
onreply_route[REPLY_WS_TO_WS] {
xlog("L_INFO", "WS to WS");
if(status=~"[12][0-9][0-9]") {
rtpengine_manage("force trust-address replace-origin
replace-session-connection ICE=force");
route(NATMANAGE);
}
}
Thank you.
12:02 p.m.
New subject: WebRTC ACK Protocol [solved]
Adding Contact alias in 200 OK, fixed the issue:
if (nat_uac_test(64)) {
add_contact_alias();
}
Thank You.
În mie., 3 apr. 2019 la 23:58, Ilie Soltanici <iliusha.md(a)gmail.com> a
scris:
Hello,
Config is more or less like the standard one:
route[WITHINDLG] {
if (!has_totag()) return;
if (loose_route()) {
route(RURIALIAS);
if ( is_method("ACK") ) {
xlogl("L_INFO", "[$cfg(route)] ACK is forwarded
statelessy\n");
route(NATMANAGE);
} else if (is_method("NOTIFY") ) {
# Add Record-Route for in-dialog NOTIFY as per RFC 6665.
route(RECORD_ROUTE);
}
xlogl("L_INFO", "[$cfg(route)] In Dialog loose_route,
Relaying\n");
route(RELAY);
exit;
};
if (is_method("SUBSCRIBE") && uri == myself) {
xlogl("L_INFO", "[$cfg(route)] in-dialog subscribe requests,
Checking Dialog.\n");
route(PRESENCE);
exit;
}
if ( is_method("ACK") ) {
if ( t_check_trans() ) {
xlogl("L_INFO", "[$cfg(route)] ACK in transaction.
Relaying\n");
route(RELAY);
exit;
} else {
xlogl("L_WARN", "[$cfg(route)] ACK without matching transaction
... ignore and discard\n");
sl_send_reply("606", "Not Acceptable");
exit;
}
}
xlogl("L_WARN", "[$cfg(route)] Unknown Dialog\n");
sl_send_reply("404","Not Found");
exit;
}
route[RURIALIAS] {
if(isdsturiset() || ($du != "")) {
xlogl("L_INFO", "[$cfg(route)]: Destination URI is set, no
un-aliasing is needed\n");
return;
}
xlogl("L_INFO", "[$cfg(route)] --Start Route--\n");
xlogl("L_INFO", "[$cfg(route)]: Route using R-URI, any alias on R-URI
('$ru')?\n");
handle_ruri_alias();
switch ($rc) {
case -1:
xlogl("L_WARN", "[$cfg(route)]: Failed to handle alias of R-URI
$ru\n");
send_reply("400","Bad Request");
exit;
case 1:
xlogl("L_INFO", "[$cfg(route)]: Alias parsed, routing $rm from
$fu
to $du\n");
break;
case 2:
xlogl("L_INFO", "[$cfg(route)]: Alias not found, routing $rm from
$fu to $ru\n");
break;
};
return;
}
route[NATMANAGE] {
if(has_body("application/sdp")) {
route(RTPMANAGE);
}
# Set FLB_NATB? Only in within-dialog request with nat=yes on Route
header initiated by AS
if (is_request() && has_totag() &&
check_route_param("nat=yes") &&
isflagset(FLS_FROM_ASTERISK)) {
setbflag(FLB_NATB);
}
# Return unless FLT_NATS or FLB_NATB are set
if (!(isflagset(FLT_NATS) || isbflagset(FLB_NATB))) {
xlogl("L_INFO", "[$cfg(route)] No endpoint is behind NAT,
return\n");
if(nat_uac_test("1")) {
xlogl("L_INFO", "[$cfg(route)] Contact is behind NAT,
Fixing\n");
fix_nated_contact();
}
return;
} else {
xlogl("L_INFO", "[$cfg(route)] One or both endpoints are behind
NAT, continue!\n");
}
# Add nat=yes in record-route? Only in initial requests when called
from branch_route
if (is_request() && !has_totag() && t_is_branch_route()) {
xlogl("L_INFO", "[$cfg(route)] Add nat=yes to record-route
(reason: initial request called from branch route)\n");
add_rr_param(";nat=yes");
}
if (is_reply()) {
if(isbflagset(FLB_NATB)) {
fix_nated_contact();
}
}
}
route[RELAY] {
route(SETUP_BY_TRANSPORT);
if (is_method("INVITE|BYE|SUBSCRIBE|UPDATE")) {
if(!t_is_set("branch_route")) t_on_branch("MANAGE_BRANCH");
}
if (is_method("INVITE|SUBSCRIBE|UPDATE")) {
if(!t_is_set("onreply_route")) t_on_reply("MANAGE_REPLY");
}
if (is_method("INVITE")) {
if(!t_is_set("failure_route")) t_on_failure("MANAGE_FAILURE");
}
if (!t_relay()) {
sl_reply_error();
}
exit;
}
}
route[SETUP_BY_TRANSPORT] {
if ($ru =~ "transport=ws") {
xlogl("L_INFO","[$cfg(route)] Request going to WS");
if(sdp_with_transport("RTP/SAVPF")) {
xlogl("L_INFO","[$cfg(route)] Request going from WS to
WS");
rtpengine_manage("force trust-address replace-origin
replace-session-connection ICE=force");
t_on_reply("REPLY_WS_TO_WS");
return;
}
xlogl("L_INFO","[$cfg(route)] Request going to WS from AS");
rtpengine_manage("rtcp-mux-offer generate-mid DTLS=passive SDES-off
ICE=force RTP/SAVPF");
force_send_socket(tls:MY_EXTERNAL_IP_ADDR:10443);
t_on_reply("REPLY_FROM_WS");
}
else if ($proto =~ "ws") {
xlog("L_INFO", "Request coming from WS");
rtpengine_manage("rtcp-mux-demux DTLS=off SDES-off ICE=remove RTP/AVP");
t_on_reply("REPLY_TO_WS");
}
else {
xlog("L_INFO", "This is a classic phone call");
rtpengine_manage("replace-origin replace-session-connection");
t_on_reply("MANAGE_CLASSIC_REPLY");
}
}
onreply_route[REPLY_TO_WS] {
xlog("L_INFO", "Reply from softphone: $rs");
if (t_check_status("183")) {
change_reply_status("180", "Ringing");
remove_body();
exit;
}
if(!(status=~"[12][0-9][0-9]"))
return;
# rtpengine_manage("froc+SP");
xlogl("L_INFO","Fixing ICE/SAVPF Parameters");
rtpengine_manage("rtcp-mux-offer generate-mid DTLS=passive SDES-off
ICE=force RTP/SAVPF");
}
onreply_route[REPLY_FROM_WS] {
xlog("L_INFO", "Reply from webrtc client: $rs");
if(status=~"[12][0-9][0-9]") {
rtpengine_manage("force trust-address replace-origin
replace-session-connection ICE=remove RTP/AVP");
# rtpengine_manage("froc-sp");
route(NATMANAGE);
}
}
onreply_route[MANAGE_CLASSIC_REPLY] {
xlog("L_INFO", "Boring reply from softphone: $rs");
if(status=~"[12][0-9][0-9]") {
rtpengine_manage("replace-origin replace-session-connection");
# rtpengine_manage("co");
route(NATMANAGE);
}
}
onreply_route[REPLY_WS_TO_WS] {
xlog("L_INFO", "WS to WS");
if(status=~"[12][0-9][0-9]") {
rtpengine_manage("force trust-address replace-origin
replace-session-connection ICE=force");
route(NATMANAGE);
}
}
Thank you.
8 Jan
8 Jan
5:48 a.m.
New subject: WebRTC ACK Protocol [solved]
Hi,
Just a suggestion to put the contact alias function under the
"is_first_hop()" condition. That'll help you in case multiple Kamailios are
in the call path.
if(is_first_hop()){
add_contact_alias();
}
Regards,
Sammy
On Thu, Apr 4, 2019 at 6:07 AM Ilie Soltanici <iliusha.md(a)gmail.com> wrote:
Adding Contact alias in 200 OK, fixed the issue:
if (nat_uac_test(64)) {
add_contact_alias();
}
Thank You.
În mie., 3 apr. 2019 la 23:58, Ilie Soltanici <iliusha.md(a)gmail.com> a
scris:
Hello,
Config is more or less like the standard one:
route[WITHINDLG] {
if (!has_totag()) return;
if (loose_route()) {
route(RURIALIAS);
if ( is_method("ACK") ) {
xlogl("L_INFO", "[$cfg(route)] ACK is forwarded
statelessy\n");
route(NATMANAGE);
} else if (is_method("NOTIFY") ) {
# Add Record-Route for in-dialog NOTIFY as per RFC 6665.
route(RECORD_ROUTE);
}
xlogl("L_INFO", "[$cfg(route)] In Dialog loose_route,
Relaying\n");
route(RELAY);
exit;
};
if (is_method("SUBSCRIBE") && uri == myself) {
xlogl("L_INFO", "[$cfg(route)] in-dialog subscribe requests,
Checking Dialog.\n");
route(PRESENCE);
exit;
}
if ( is_method("ACK") ) {
if ( t_check_trans() ) {
xlogl("L_INFO", "[$cfg(route)] ACK in transaction.
Relaying\n");
route(RELAY);
exit;
} else {
xlogl("L_WARN", "[$cfg(route)] ACK without matching transaction
... ignore and discard\n");
sl_send_reply("606", "Not Acceptable");
exit;
}
}
xlogl("L_WARN", "[$cfg(route)] Unknown Dialog\n");
sl_send_reply("404","Not Found");
exit;
}
route[RURIALIAS] {
if(isdsturiset() || ($du != "")) {
xlogl("L_INFO", "[$cfg(route)]: Destination URI is set, no
un-aliasing is needed\n");
return;
}
xlogl("L_INFO", "[$cfg(route)] --Start Route--\n");
xlogl("L_INFO", "[$cfg(route)]: Route using R-URI, any alias on R-URI
('$ru')?\n");
handle_ruri_alias();
switch ($rc) {
case -1:
xlogl("L_WARN", "[$cfg(route)]: Failed to handle alias of R-URI
$ru\n");
send_reply("400","Bad Request");
exit;
case 1:
xlogl("L_INFO", "[$cfg(route)]: Alias parsed, routing $rm from
$fu to $du\n");
break;
case 2:
xlogl("L_INFO", "[$cfg(route)]: Alias not found, routing $rm from
$fu to $ru\n");
break;
};
return;
}
route[NATMANAGE] {
if(has_body("application/sdp")) {
route(RTPMANAGE);
}
# Set FLB_NATB? Only in within-dialog request with nat=yes on Route
header initiated by AS
if (is_request() && has_totag() &&
check_route_param("nat=yes") &&
isflagset(FLS_FROM_ASTERISK)) {
setbflag(FLB_NATB);
}
# Return unless FLT_NATS or FLB_NATB are set
if (!(isflagset(FLT_NATS) || isbflagset(FLB_NATB))) {
xlogl("L_INFO", "[$cfg(route)] No endpoint is behind NAT,
return\n");
if(nat_uac_test("1")) {
xlogl("L_INFO", "[$cfg(route)] Contact is behind NAT,
Fixing\n");
fix_nated_contact();
}
return;
} else {
xlogl("L_INFO", "[$cfg(route)] One or both endpoints are behind
NAT, continue!\n");
}
# Add nat=yes in record-route? Only in initial requests when called
from branch_route
if (is_request() && !has_totag() && t_is_branch_route()) {
xlogl("L_INFO", "[$cfg(route)] Add nat=yes to record-route
(reason: initial request called from branch route)\n");
add_rr_param(";nat=yes");
}
if (is_reply()) {
if(isbflagset(FLB_NATB)) {
fix_nated_contact();
}
}
}
route[RELAY] {
route(SETUP_BY_TRANSPORT);
if (is_method("INVITE|BYE|SUBSCRIBE|UPDATE")) {
if(!t_is_set("branch_route")) t_on_branch("MANAGE_BRANCH");
}
if (is_method("INVITE|SUBSCRIBE|UPDATE")) {
if(!t_is_set("onreply_route")) t_on_reply("MANAGE_REPLY");
}
if (is_method("INVITE")) {
if(!t_is_set("failure_route")) t_on_failure("MANAGE_FAILURE");
}
if (!t_relay()) {
sl_reply_error();
}
exit;
}
}
route[SETUP_BY_TRANSPORT] {
if ($ru =~ "transport=ws") {
xlogl("L_INFO","[$cfg(route)] Request going to WS");
if(sdp_with_transport("RTP/SAVPF")) {
xlogl("L_INFO","[$cfg(route)] Request going from WS to
WS");
rtpengine_manage("force trust-address replace-origin
replace-session-connection ICE=force");
t_on_reply("REPLY_WS_TO_WS");
return;
}
xlogl("L_INFO","[$cfg(route)] Request going to WS from AS");
rtpengine_manage("rtcp-mux-offer generate-mid DTLS=passive SDES-off
ICE=force RTP/SAVPF");
force_send_socket(tls:MY_EXTERNAL_IP_ADDR:10443);
t_on_reply("REPLY_FROM_WS");
}
else if ($proto =~ "ws") {
xlog("L_INFO", "Request coming from WS");
rtpengine_manage("rtcp-mux-demux DTLS=off SDES-off ICE=remove RTP/AVP");
t_on_reply("REPLY_TO_WS");
}
else {
xlog("L_INFO", "This is a classic phone call");
rtpengine_manage("replace-origin replace-session-connection");
t_on_reply("MANAGE_CLASSIC_REPLY");
}
}
onreply_route[REPLY_TO_WS] {
xlog("L_INFO", "Reply from softphone: $rs");
if (t_check_status("183")) {
change_reply_status("180", "Ringing");
remove_body();
exit;
}
if(!(status=~"[12][0-9][0-9]"))
return;
# rtpengine_manage("froc+SP");
xlogl("L_INFO","Fixing ICE/SAVPF Parameters");
rtpengine_manage("rtcp-mux-offer generate-mid DTLS=passive SDES-off
ICE=force RTP/SAVPF");
}
onreply_route[REPLY_FROM_WS] {
xlog("L_INFO", "Reply from webrtc client: $rs");
if(status=~"[12][0-9][0-9]") {
rtpengine_manage("force trust-address replace-origin
replace-session-connection ICE=remove RTP/AVP");
# rtpengine_manage("froc-sp");
route(NATMANAGE);
}
}
onreply_route[MANAGE_CLASSIC_REPLY] {
xlog("L_INFO", "Boring reply from softphone: $rs");
if(status=~"[12][0-9][0-9]") {
rtpengine_manage("replace-origin replace-session-connection");
# rtpengine_manage("co");
route(NATMANAGE);
}
}
onreply_route[REPLY_WS_TO_WS] {
xlog("L_INFO", "WS to WS");
if(status=~"[12][0-9][0-9]") {
rtpengine_manage("force trust-address replace-origin
replace-session-connection ICE=force");
route(NATMANAGE);
}
}
Thank you.
_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users(a)lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
1569
days inactive
1849
days old
4 comments
3 participants
participants (3)
-
Ilie Soltanici -
Jorge Cornejo -
SamyGo