git.sip-router.org Git - sip-router/blob - modules_s/iptrtpproxy/examples/ser.cfg

   1 # $Id$
   2 #
   3 # Simple application level gateway config script.
   4 #
   5 #
   6
   7 # ------------------ module loading ----------------------------------
   8
   9 loadmodule "./modules/mysql/mysql.so"
  10
  11 loadmodule "./modules/iptrtpproxy/iptrtpproxy.so"
  12 loadmodule "./modules/maxfwd/maxfwd.so"
  13 loadmodule "./modules/rr/rr.so"
  14 loadmodule "./modules/tm/tm.so"
  15 loadmodule "./modules/sl/sl.so"
  16 loadmodule "./modules/avp_db/avp_db.so"
  17 loadmodule "./modules/usrloc/usrloc.so"
  18 loadmodule "./modules/nathelper/nathelper.so"
  19 loadmodule "./modules/registrar/registrar.so"
  20
  21 flags
  22         FLAG_NAT_REG,
  23         FLAG_NAT;
  24
  25
  26 avpflags
  27         rtpproxy_dlg,
  28         dialog_cookie;
  29
  30 # ----------------- setting module-specific parameters ---------------
  31
  32 modparam("avp_db|usrloc", "db_url", "mysql://ser:heslo@127.0.0.1/ser");
  33
  34 modparam("usrloc", "db_mode", 1)
  35
  36 modparam("rr", "cookie_secret", "MyRRAVPcookiesecret");
  37
  38 modparam("nathelper", "rtpproxy_disable", 1);
  39
  40 modparam("iptrtpproxy", "config", "/etc/iptrtpproxy.cfg");
  41 modparam("iptrtpproxy", "switchboard", "name=*;learning-timeout-a=10;learning-timeout-b=10;ringing-timeout=90");
  42
  43 modparam("registrar", "save_nat_flag", "FLAG_NAT_REG");
  44 modparam("registrar", "load_nat_flag", "FLAG_NAT_REG");
  45
  46 modparam("avp_db", "attr_group", "id=rtp_dlg,flag=rtpproxy_dlg,table=rtpproxy_attrs");
  47
  48 # ------------------ main fun below ----------------------------------
  49
  50 route {
  51
  52         if (!mf_process_maxfwd_header("10")) {
  53                 sl_send_reply("483", "Too Many Hops");
  54                 break;
  55         };
  56         if (msg:len > max_len) {
  57                 sl_send_reply("513", "Message too big");
  58                 break;
  59         };
  60 #       if (method=="INVITE") {
  61 #               if (!(uri == myself)) {
  62 #                       sl_send_reply("403", "Call cannot be served here");
  63 #                       break;
  64 #               }
  65 #       };
  66
  67         if (!t_newtran()) {
  68                 sl_send_reply("500", "Internal error newtran");
  69                 break;
  70         };
  71         # Do strict routing if pre-loaded route headers present
  72         if (loose_route()) {
  73                 if ($dialog_id) {  # AVP loaded from cookie
  74                         if (method == "INVITE" || method == "UPDATE") {   # TODO: check if there is a SDP
  75                                 # re-INVITEs
  76                                 if (@route[0].ftag == @from.tag) {
  77                                         $gate_a_to_b = 1;
  78                                         if ($init_dialog)
  79                                                 $tmp = 3;
  80                                         else
  81                                                 $tmp = 1;
  82                                 }
  83                                 else {
  84                                         $gate_a_to_b = 0;
  85                                         if ($init_dialog)
  86                                                 $tmp = 2;
  87                                         else
  88                                                 $tmp = 0;
  89                                 }
  90                                 resetflag("FLAG_NAT");
  91                                 # test if caller is behind NAT
  92                                 if (nat_uac_test("18")) {
  93                                         setflag("FLAG_NAT");
  94                                 }
  95                                 # is callee behind NAT? we know it from registration
  96                                 if (lookup("location")) {
  97                                         if (isflagset("FLAG_NAT_REG"))
  98                                                 setflag("FLAG_NAT");
  99                                 }
 100                                 else {
 101                                         sl_reply("404", "Unknown user in To");
 102                                         break;
 103                                 }
 104
 105                                 if ($sess_ids) {  # pending non-confirmed sessions?
 106                                         iptrtpproxy_delete("$sess_ids");
 107                                         $sess_ids = "";
 108                                 }
 109                                 if (isflagset("FLAG_NAT")) {
 110                                         if (!iptrtpproxy_alloc("$tmp", "my")) {
 111                                                 sl_reply("500", "RTP proxy error");
 112                                                 break;
 113                                         }
 114                                         $sess_ids = @iptrtpproxy.session_ids;
 115                                         t_on_reply("invite_response");
 116                                         t_on_failure("invite_failure");
 117                                 }
 118                         }
 119                         else if (method == "BYE") {   # CANCEL ?
 120                                 t_on_reply("bye_response");
 121                         }
 122                 }
 123                 t_relay();
 124                 break;
 125         };
 126
 127         if (method=="REGISTER") {
 128
 129                 if (nat_uac_test("18")) {
 130                         setflag("FLAG_NAT_REG");
 131                 }
 132
 133                 if (!save_contacts("location")) {
 134                         sl_reply("400", "Invalid REGISTER Request");
 135                         break;
 136                 }
 137
 138                 break;
 139         }
 140
 141         if (method=="INVITE" && @to.tag=="") {
 142                 $dialog_id = @sys.unique;
 143                 $init_dialog = 1;
 144
 145                 # test if caller is behind NAT
 146                 if (nat_uac_test("18")) {
 147                         setflag("FLAG_NAT");
 148                 }
 149
 150                 # is callee behind NAT? we know it from registration
 151                 if (lookup("location")) {
 152                         if (isflagset("FLAG_NAT_REG"))
 153                                 setflag("FLAG_NAT");
 154                 }
 155                 else {
 156                         sl_reply("404", "Unknown user in To");
 157                         break;
 158                 }
 159                 # test if call comming at gate a or b by ip, port etc.
 160                 $gate_a_to_b = 1;  # TODO: we do not consider two gates now, a->b & ringing-timeout
 161
 162                 if (isflagset("FLAG_NAT")) {
 163                         if (iptrtpproxy_alloc("3", "my")) {
 164                                 $sess_ids = @iptrtpproxy.session_ids;
 165                                 t_on_reply("invite_response");
 166                                 t_on_failure("invite_failure");
 167                         }
 168                 }
 169
 170                 setavpflag("$f.dialog_id", "dialog_cookie");
 171                 record_route();  # it will add ftag to record-route, we can check direction
 172         }
 173
 174         if (!t_relay()) {
 175                 sl_reply_error();
 176         }
 177
 178 }
 179
 180 onreply_route["invite_response"] {
 181         if (status=~"18[0-9]" || status=~"2[0-9][0-9]") {
 182                 if ($gate_a_to_b == "1") {
 183                         if ($init_dialog && status=~"18[0-9]")
 184                                 $tmp = 2;  # ringing-timeout
 185                         else
 186                                 $tmp = 0;
 187                 }
 188                 else {
 189                         if ($init_dialog && status=~"18[0-9]")
 190                                 $tmp = 3;  # ringing-timeout
 191                         else
 192                                 $tmp = 1;
 193                 }
 194                 if (iptrtpproxy_update("$tmp", "$sess_ids")) {
 195                         if (status=~"2[0-9][0-9]") {
 196                                 if ($init_dialog) {
 197                                         iptrtpproxy_adjust_timeout("$gate_a_to_b", "$sess_ids");  # decrease ringing-timeout
 198                                 }
 199                                 # delete old session, e.g. in case of re-INVITE
 200                                 load_extra_attrs("rtp_dlg", "$dialog_id");
 201                                 iptrtpproxy_delete("$dlg_sess_ids");
 202                                 # save session ids
 203                                 $dlg_sess_ids = @iptrtpproxy.session_ids;
 204                                 setavpflag("$f.dlg_sess_ids", "rtpproxy_dlg");
 205                                 save_extra_attrs("rtp_dlg", "$dialog_id");
 206                         }
 207                 }
 208         }
 209 }
 210
 211 failure_route["invite_failure"] {
 212         if ($sess_ids) {
 213                 iptrtpproxy_delete("$sess_ids");
 214                 $sess_ids = "";
 215         }
 216 }
 217
 218 onreply_route["bye_response"] {
 219         if (status=~"2[0-9][0-9]") {
 220                 load_extra_attrs("rtp_dlg", "$dialog_id");
 221                 iptrtpproxy_delete("$dlg_sess_ids");
 222                 remove_extra_attrs("rtp_dlg", "$dialog_id");
 223         }
 224 }
 225