Re: [Serusers] problems with ACKs and BYEs

Hi! Maybe the Lucent GW is a strict router (RFC 2534). Strict routers will put the next hop in the request URI, and the final destination into the last Route: header. Using loose_route should take care of this. if (loose_route()) { ... do some authentication stuff ... xlog("...loose_route() processed"); t_relay; break; } regards, klaus Jorge Crichigno wrote: > Hi all, > > I have a problem with in the following scenario: > > Lucent GW SER IPPhone > IP: 1.2.3.4 IP:5.6.7.8 IP:8.9.5.5 > > INVITE--> > <-- 100 > INVITE--> > <--100 > <--180 > <--180 > <--200 > <--200 > ACK-->(Request-Uri = sip:5.6.7.8:5060) <-- PROBLEM HERE > > > The problem arises only with the Lucent Gateway, because it sends the > ACK with the Request-Uri as showed above (Request-Uri has the IP and > port of the SER). I also found the same problem with BYEs. I attach the > ser.cfg at this mail. > > I think this is a bug of Lucent, because I expected that Request-Uri > of the ACKs should equal to the contact uri of the 200 message sent by > the ipphone. The same for BYEs. Could some one clarify me that? > > Thanks in advance !!! > > > > > > > > > > ------------------------------------------------------------------------ > > > debug=5 # debug level (cmd line: -dddddddddd) > fork=yes > log_stderror=yes # (cmd line: -E) > > > check_via=no # (cmd. line: -v) > dns=no # (cmd. line: -r) > rev_dns=no # (cmd. line: -R) > port=5060 > children=20 > fifo="/tmp/ser_fifo" > listen=5.6.7.8 > alias = "mydomain.com" > > # --------------------------------------------------------------------------- > loadmodule "/usr/local/lib/ser/modules/mysql.so" # needed for domain.so > loadmodule "/usr/local/lib/ser/modules/registrar.so" > loadmodule "/usr/local/lib/ser/modules/dbtext.so" # necesario para domain.so > loadmodule "/usr/local/lib/ser/modules/usrloc.so" > loadmodule "/usr/local/lib/ser/modules/domain.so" # necesario para mediaproxy.so (is_from_local) > loadmodule "/usr/local/lib/ser/modules/mediaproxy.so" > > loadmodule "/usr/local/lib/ser/modules/rr.so" > loadmodule "/usr/local/lib/ser/modules/sl.so" # stateless > loadmodule "/usr/local/lib/ser/modules/tm.so" # statefull > loadmodule "/usr/local/lib/ser/modules/acc.so" > loadmodule "/usr/local/lib/ser/modules/maxfwd.so" > loadmodule "/usr/local/lib/ser/modules/textops.so" > loadmodule "/usr/local/lib/ser/modules/auth.so" # needed for xml_socket > loadmodule "/usr/local/lib/ser/modules/xml_socket.so" # our module > > # --------------------------------------------------------------------------- > modparam("usrloc", "db_mode", 0) > modparam("domain", "db_mode", 0) > #modparam("domain", "db_url", "mysql://serro:47serro11@216.55.240.66/ser") > modparam("domain", "db_url", "mysql://serro:47serro11@localhost/ser") > #Default value is "mysql://serro:47serro11@localhost/ser" > modparam("mediaproxy", "natping_interval", 60) > # unix socket to send commands to proxy dispatcher > modparam("mediaproxy", "mediaproxy_socket", "/var/run/proxydispatcher.sock") > modparam("registrar","nat_flag",2) > modparam("rr", "enable_full_lr", 1) > #modparam("rr", "enable_double_rr", 0) > modparam("tm", "fr_timer", 50) > modparam("tm", "fr_inv_timer", 50) > # --------------------------------------------------------------------------- > > route{ > > if (!mf_process_maxfwd_header("10")) { > sl_send_reply("483","Too Many Hops"); > break; > }; > > if (msg:len >= max_len ) { > sl_send_reply("513", "Message too big"); > break; > }; > > # NAT control > if (client_nat_test("3")) { > setflag(2); > force_rport(); > fix_contact(); > }; > > if (method=="REGISTER") { > route(1); > break; > }; > > if (method == "INVITE"){ > route(2); > break; > }; > > if (method == "BYE"){ > route(3); > break; > }; > > route(4); > > } > > > #-------------------------------------------------------------------------------------- > # Aqui se procesan los REGISTERs - REGISTERs here > #-------------------------------------------------------------------------------------- > route[1]{ > > if (xml_www_authorize_register("")) { # challenge - response auth > www_challenge("", "0"); > break; > }; > consume_credentials(); > sl_send_reply("200", "Ok"); > } > > #-------------------------------------------------------------------------------------- > # Aqui se procesan los INVITEs - INVITEs here > #-------------------------------------------------------------------------------------- > route[2]{ > t_on_reply("1"); > sl_send_reply("100"," Trying"); > > if (t_lookup_request()){ > log(1, "route[2]: Transaction already in progress\n"); > break; > }; > > > if (!xml_www_authorize_invite("")) { # chanllenge - response auth - load msg->new_uri > www_challenge("", "0"); > break; > }; > consume_credentials(); > > record_route(); > # use_media_proxy(); > log(1, "routing the invite...\n"); > if (!t_relay()){ > sl_reply_error(); > # end_media_session(); > break; > }; > > > } > > #-------------------------------------------------------------------------------------- > # Aqui se procesan los BYEs - BYEs here > #-------------------------------------------------------------------------------------- > route[3]{ > t_on_reply("1"); # p/ q en los reply tb cambiemos contact > > if (t_lookup_request()){ > sl_send_reply("100", "Trying"); > log(1, "route[3]: Transaction already in progress\n"); > break; > }; > #end_media_session(); > xml_acc(); # accounting > if (!t_relay()) { > sl_reply_error(); > break; > }; > } > #-------------------------------------------------------------------------------------- > # Aqui se procesan los metodos que no son INVITEs ni BYEs, i.e., ACKs & CANCELs > #-------------------------------------------------------------------------------------- > route[4]{ > > xml_acc(); > > if (!t_relay()) { > > sl_reply_error(); > break; > }; > > } > > # Cuando hay NAT, en la respuesta 200 (OK) del telefono destino se debe cambiar el campo > # contact este uri (el del campo contact) sera usado en las siguientes transacciones > #-------------------------------------------------------------------------------------- > # Aqui se procesan los replies: 1xx, 200, 4xx, etc - > #-------------------------------------------------------------------------------------- > > onreply_route[1] { > > xml_acc(); > > if (status=~"(183)|(2[0-9][0-9])") { > if (client_nat_test("1")) { > fix_contact(); > }; > }; > > > } > > > > ------------------------------------------------------------------------ > > _______________________________________________ > Serusers mailing list > serusers(a)lists.iptel.org > http://lists.iptel.org/mailman/listinfo/serusers