Thank you very much for the explanation.
-----Original Message----- From: Anca Vamanu <anca.vam...@gmail.com> To: OpenSIPS users mailling list <users@lists.opensips.org> Sent: Mon, Jan 23, 2012 7:19 pm Subject: Re: [OpenSIPS-Users] Incorrect header contact when using top hiding dialog Hi, You get this behavior because of the way of the way top_hiding is implemented. The IP:PORT with which the contact is replaced corresponds to the interface on which the message was received. It seems that in your case the message is actually received on the private interface, so it will use that IP as the local contact. So the top_hiding implementation has a limitation and won't work in your case. The way to extend it is to offer the possibility to set the contact to be used for replacing in an avp before calling the top_hiding function and if set, the function will use that value instead of looking at the interface on which the message was received. You could open a feature request for this on sourceforge. Regards, Anca On Tue, Jan 24, 2012 at 3:24 AM, <discodo...@aol.com> wrote: I am hoping someone can point me in the right direction. I am using opensips 1.7. I have 2 networks using mhomed=1. When I invoke topology_hiding() using the dialog module the header contact uses the internal IP to the external side of the call. Here is my config. Am I missing something? debug=3 log_stderror=no log_facility=LOG_LOCAL0 fork=yes children=4 disable_tcp=yes auto_aliases=yes sip_warning=yes listen=udp:xxx.xxx.xxx.xxx:5060 listen=udp:10.8.1.139:5060 mhomed=1 group=nobody user=nobody ####### Modules Section ######## #set module path mpath="/usr/local/lib64/opensips/modules/" /* uncomment next line for MySQL DB support */ loadmodule "db_text.so" loadmodule "signaling.so" loadmodule "sl.so" loadmodule "tm.so" loadmodule "rr.so" loadmodule "maxfwd.so" loadmodule "textops.so" loadmodule "mi_fifo.so" loadmodule "uri.so" loadmodule "domain.so" loadmodule "permissions.so" loadmodule "dialog.so" loadmodule "rtpproxy.so" modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo") modparam("rr", "append_fromtag", 0) modparam("uri", "use_uri_table", 0) modparam("domain", "db_url","text:///zxa/server/opensipsdb") modparam("domain", "db_mode", 1) # Use caching modparam("dialog", "db_mode", 1) # Realtime modparam("dialog", "db_url","text:///zxa/server/opensipsdb") modparam("permissions", "db_url","text:///zxa/server/opensipsdb") modparam("rtpproxy","rtpproxy_sock", "udp:127.0.0.1:7891") ####### Routing Logic ######## route{ xlog("=== TOP ==="); xlog("%%%% tu= $tu | fu= $fu | od= $od | ReceivedINT: $Ri | SourceIP: $si %%%"); if (!check_address("1","$si","$sp","$proto")) { xlog("=== ACCESS FAILED ==="); xlog("=== $si| $sp | $proto ==="); sl_send_reply("403","Forbidden"); exit; } if (!mf_process_maxfwd_header("10")) { xlog("=== TOO MANY HOPS ==="); sl_send_reply("483","Too Many Hops"); exit; } #CANCEL processing if (is_method("CANCEL")) { xlog("=== CANCEL ==="); if (t_check_trans()) t_relay(); exit; } if (is_method("PUBLISH")) { sl_send_reply("503", "Service Unavailable"); exit; } if (has_totag()) { xlog("=== HAS TO TAG ==="); if(match_dialog()) && is_method("INVITE|ACK|BYE|UPDATE") #Topology Hide Routine { xlog("=== HAS DIALOG MATCH ==="); if (is_method("BYE")) { xlog("=== DIALOG MATCH BYE ==="); setflag(1); # Accounting bye } else if (is_method("INVITE")) { xlog("=== DIALOG MATCH RE-INVITE LOOSE ==="); record_route(); } else if (is_method("ACK")) { xlog("=== DIALOG MATCH ACK ==="); } xlog(" in-dialog topology hiding request - $DLG_dir\n"); route(1); exit; } } t_check_trans(); if (loose_route()) { xlog("L_ERR","Attempt to route with preloaded Route's [$fu/$tu/$ru/$ci]"); if (!is_method("ACK")) { sl_send_reply("403","Preload Route denied"); exit; } } # record routing if (!is_method("REGISTER|MESSAGE")) { record_route(); } if (!is_uri_host_local()) { xlog("Not local so lets just see what happens $rd"); route(1); } if ($rU==NULL) { # request with no Username in RURI sl_send_reply("484","Address Incomplete"); exit; } if (is_method("INVITE") && (!has_totag()) ) { xlog("((((((((( NEW CALL ))))))))))"); rewritehostport("10.6.3.87:5068"); topology_hiding(); route(1); exit; } send_reply("420", "Invalid Extension"); exit; } route[1] { #---- RTP Proxy handling ---# xlog("=== ROUTE 1 ==="); if (is_method("BYE|CANCEL")) { unforce_rtp_proxy(); } if (has_body("application/sdp")) { append_hf("P-hint: IE \r\n"); rtpproxy_offer("IE","10.8.1.139"); } t_on_reply("1"); t_on_failure("1"); if (!t_relay()) { sl_reply_error(); } exit; } onreply_route[1] { xlog("=== ON REPLY ROUTE 2 rs= $rs | fu= $fu | od= $od | si= $si | Ri= $Ri ==="); if ( status=~"(183)|(2[0-9][0-9])" ) { if ($Ri == "10.8.1.139") { append_hf("P-hint: RR EI \r\n"); rtpproxy_answer("EI","xxx.xxx.xxx.xxx"); } else { append_hf("P-hint: RR IE \r\n"); rtpproxy_answer("IE","10.8.1.139"); } } } failure_route[1] { xlog("=== FAIL ROUTE 2 ==="); unforce_rtp_proxy(); if (t_was_cancelled()) { exit; } } Here is the Sip traces from the external call. xxx.xxx.xxx.xxx is my opensips server A.B.C.D is the the external call. 10.8.1.139 is my internal IP for opensips. On the 180 ringing you can see that the contact is set to 10.8.1.139. It should be xxx.xxx.xxx.xxx INVITE sip:18584278...@xxx.xxx.xxx.xxx SIP/2.0 Via: SIP/2.0/UDP A.B.C.D:5068;branch=z9hG4bK1A55 From: IPFax <sip:8583234002@A.B.C.D>;tag=IPF_PORT_0001_1A54 To: <sip:18584278...@xxx.xxx.xxx.xxx> Call-ID: 1211a713-96b4-49e0-affb-6c56b73ae54c@A.B.C.D CSeq: 1 INVITE Max-Forwards: 70 Contact: <sip:8583234002@A.B.C.D:5068> User-Agent: VFAXSUA/IP_FAX-9.0.5782.743 Allow: INVITE, ACK, BYE, CANCEL, REFER, NOTIFY Content-Type: application/sdp Content-Length: 166 v=0 o=IPFax 0 0 IN IP4 A.B.C.D s=SIP Fax Call i=IPFax c=IN IP4 A.B.C.D t=0 0 m=audio 49176 RTP/AVP 0 a=rtpmap:0 PCMU/8000 a=ptime:20 a=sendrecv -------------------------------------------------------------------------- SIP/2.0 180 Ringing Via: SIP/2.0/UDP A.B.C.D:5068;branch=z9hG4bK1A55 From: IPFax <sip:8583234002@A.B.C.D>;tag=IPF_PORT_0001_1A54 To: <sip:18584278...@xxx.xxx.xxx.xxx>;tag=IPF_PORT_0005_1044 Call-ID: 1211a713-96b4-49e0-affb-6c56b73ae54c@A.B.C.D CSeq: 1 INVITE Contact: <sip:10.8.1.139:5060;did=8b3.a5e06475> User-Agent: VFAXSUA/IP_FAX-9.0.5782.743 Content-Length: 0 -------------------------------------------------------------------------- SIP/2.0 200 OK Via: SIP/2.0/UDP A.B.C.D:5068;branch=z9hG4bK1A55 From: IPFax <sip:8583234002@A.B.C.D>;tag=IPF_PORT_0001_1A54 To: <sip:18584278...@xxx.xxx.xxx.xxx>;tag=IPF_PORT_0005_1044 Call-ID: 1211a713-96b4-49e0-affb-6c56b73ae54c@A.B.C.D CSeq: 1 INVITE Contact: <sip:10.8.1.139:5060;did=8b3.a5e06475> User-Agent: VFAXSUA/IP_FAX-9.0.5782.743 Allow: INVITE, ACK, BYE, CANCEL, REFER, NOTIFY Content-Type: application/sdp Content-Length: 179 P-hint: RR EI v=0 o=IPFax 0 0 IN IP4 10.6.3.87 s=SIP Fax Call i=IPFax c=IN IP4 xxx.xxx.xxx.xxx t=0 0 m=audio 7452 RTP/AVP 0 a=rtpmap:0 PCMU/8000 a=ptime:20 a=sendrecv a=nortpproxy:yes Thanks. _______________________________________________ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users _______________________________________________ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users
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