[SR-Users] WebRTC ACK Protocol [solved]

[Ilie Soltanici]

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 at 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.
>
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