[SR-Users] PRACK not sent
Daniel-Constantin Mierla
miconda at gmail.com
Tue Mar 17 22:10:47 CET 2015
Hello,
does PRACK have Route headers?
It will help if you can post the network packets (ngrep, pcap) for
INVITE + 1XX responses + PRACK.
Cheers,
Daniel
On 17/03/15 12:41, Dharm S wrote:
> Hi All,
>
> I am using kamailio 3.1.5. I am trying to send the PRACK message but
> it sends back 404 Not Here. I am new to using this. I am adding
> details in the configuration file below: I guess route[WITHINDLG]
>
> ####### Defined Values #########
>
> # *** Value defines - IDs used later in config
> #!ifdef WITH_MYSQL
> # - database URL - used to connect to database server by modules such
> # as: auth_db, acc, usrloc, a.s.o.
> #!define DBURL "mysql://openser:openserrw@localhost/openser"
> #!endif
> #!ifdef WITH_MULTIDOMAIN
> # - the value for 'use_domain' parameters
> #!define MULTIDOMAIN 1
> #!else
> #!define MULTIDOMAIN 0
> #!endif
>
> # - flags
> # FLT_ - per transaction (message) flags
> # FLB_ - per branch flags
> #!define FLT_ACC 1
> #!define FLT_ACCMISSED 2
> #!define FLT_ACCFAILED 3
> #!define FLT_NATS 5
>
> #!define FLB_NATB 6
> #!define FLB_NATSIPPING 7
>
> ####### Global Parameters #########
>
> #!ifdef WITH_DEBUG
> debug=4
> log_stderror=yes
> #!else
> debug=2
> log_stderror=no
> #!endif
>
> memdbg=5
> memlog=5
>
> log_facility=LOG_LOCAL0
>
> fork=yes
> children=4
>
> /* uncomment the next line to disable TCP (default on) */
> #disable_tcp=yes
>
> /* uncomment the next line to disable the auto discovery of local aliases
> based on reverse DNS on IPs (default on) */
> #auto_aliases=no
>
> /* add local domain aliases */
> #alias="sip.mydomain.com <http://sip.mydomain.com>"
>
> /* uncomment and configure the following line if you want Kamailio to
> bind on a specific interface/port/proto (default bind on all
> available) */
> #listen=udp:10.0.0.10:5060 <http://10.0.0.10:5060>
>
> /* port to listen to
> * - can be specified more than once if needed to listen on many ports */
> port=5060
>
> #!ifdef WITH_TLS
> enable_tls=yes
> #!endif
>
> ####### Custom Parameters #########
>
> # These parameters can be modified runtime via RPC interface
> # - see the documentation of 'cfg_rpc' module.
> #
> # Format: group.id <http://group.id> = value 'desc' description
> # Access: $sel(cfg_get.group.id <http://cfg_get.group.id>) or
> @cfg_get.group.id <http://cfg_get.group.id>
> #
>
> #!ifdef WITH_PSTN
> # PSTN GW Routing
> #
> # - pstn.gw_ip: valid IP or hostname as string value, example:
> # pstn.gw_ip = "10.0.0.101" desc "My PSTN GW Address"
> #
> # - by default is empty to avoid misrouting
> pstn.gw_ip = "" desc "PSTN GW Address"
> #!endif
>
>
> ####### Modules Section ########
>
> # set paths to location of modules
> #!ifdef LOCAL_TEST_RUN
> mpath="modules_k:modules"
> #!else
> mpath="/usr/lib/kamailio/modules_k/:/usr/lib/kamailio/modules/"
> #!endif
>
> #!ifdef WITH_MYSQL
> loadmodule "db_mysql.so"
> #!endif
>
> loadmodule "mi_fifo.so"
> loadmodule "kex.so"
> loadmodule "tm.so"
> loadmodule "tmx.so"
> loadmodule "sl.so"
> loadmodule "rr.so"
> loadmodule "pv.so"
> loadmodule "maxfwd.so"
> loadmodule "usrloc.so"
> loadmodule "registrar.so"
> loadmodule "textops.so"
> loadmodule "siputils.so"
> loadmodule "xlog.so"
> loadmodule "sanity.so"
> loadmodule "ctl.so"
> loadmodule "mi_rpc.so"
> loadmodule "acc.so"
>
> #!ifdef WITH_AUTH
> loadmodule "auth.so"
> loadmodule "auth_db.so"
> #!ifdef WITH_IPAUTH
> loadmodule "permissions.so"
> #!endif
> #!endif
>
> #!ifdef WITH_ALIASDB
> loadmodule "alias_db.so"
> #!endif
>
> #!ifdef WITH_MULTIDOMAIN
> loadmodule "domain.so"
> #!endif
>
> #!ifdef WITH_PRESENCE
> loadmodule "presence.so"
> loadmodule "presence_xml.so"
> #!endif
>
> #!ifdef WITH_NAT
> loadmodule "nathelper.so"
> loadmodule "rtpproxy.so"
> #!endif
>
> #!ifdef WITH_TLS
> loadmodule "tls.so"
> #!endif
>
> #!ifdef WITH_ANTIFLOOD
> loadmodule "htable.so"
> loadmodule "pike.so"
> #!endif
>
> #!ifdef WITH_XMLRPC
> loadmodule "xmlrpc.so"
> #!endif
>
> # ----------------- setting module-specific parameters ---------------
>
>
> # ----- mi_fifo params -----
> modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")
>
>
> # ----- tm params -----
> # auto-discard branches from previous serial forking leg
> modparam("tm", "failure_reply_mode", 3)
> # default retransmission timeout: 30sec
> modparam("tm", "fr_timer", 30000)
> # default invite retransmission timeout after 1xx: 120sec
> modparam("tm", "fr_inv_timer", 120000)
>
>
> # ----- rr params -----
> # add value to ;lr param to cope with most of the UAs
> modparam("rr", "enable_full_lr", 1)
> # do not append from tag to the RR (no need for this script)
> modparam("rr", "append_fromtag", 0)
>
>
> # ----- registrar params -----
> modparam("registrar", "method_filtering", 1)
> /* uncomment the next line to disable parallel forking via location */
> # modparam("registrar", "append_branches", 0)
> /* uncomment the next line not to allow more than 10 contacts per AOR */
> #modparam("registrar", "max_contacts", 10)
>
>
> # ----- acc params -----
> /* what special events should be accounted ? */
> modparam("acc", "early_media", 0)
> modparam("acc", "report_ack", 0)
> modparam("acc", "report_cancels", 0)
> /* by default ww do not adjust the direct of the sequential requests.
> if you enable this parameter, be sure the enable "append_fromtag"
> in "rr" module */
> modparam("acc", "detect_direction", 0)
> /* account triggers (flags) */
> modparam("acc", "log_flag", FLT_ACC)
> modparam("acc", "log_missed_flag", FLT_ACCMISSED)
> modparam("acc", "log_extra",
>
> "src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")
> modparam("acc", "failed_transaction_flag", FLT_ACCFAILED)
> /* enhanced DB accounting */
> #!ifdef WITH_ACCDB
> modparam("acc", "db_flag", FLT_ACC)
> modparam("acc", "db_missed_flag", FLT_ACCMISSED)
> modparam("acc", "db_url", DBURL)
> modparam("acc", "db_extra",
>
> "src_user=$fU;src_domain=$fd;dst_ouser=$tU;dst_user=$rU;dst_domain=$rd")
> #!endif
>
>
> # ----- usrloc params -----
> /* enable DB persistency for location entries */
> #!ifdef WITH_USRLOCDB
> modparam("usrloc", "db_url", DBURL)
> modparam("usrloc", "db_mode", 2)
> modparam("usrloc", "use_domain", MULTIDOMAIN)
> #!endif
>
>
> # ----- auth_db params -----
> #!ifdef WITH_AUTH
> modparam("auth_db", "db_url", DBURL)
> modparam("auth_db", "calculate_ha1", yes)
> modparam("auth_db", "password_column", "password")
> modparam("auth_db", "load_credentials", "")
> modparam("auth_db", "use_domain", MULTIDOMAIN)
>
> # ----- permissions params -----
> #!ifdef WITH_IPAUTH
> modparam("permissions", "db_url", DBURL)
> modparam("permissions", "db_mode", 1)
> #!endif
>
> #!endif
>
>
> # ----- alias_db params -----
> #!ifdef WITH_ALIASDB
> modparam("alias_db", "db_url", DBURL)
> modparam("alias_db", "use_domain", MULTIDOMAIN)
> #!endif
>
>
> # ----- domain params -----
> #!ifdef WITH_MULTIDOMAIN
> modparam("domain", "db_url", DBURL)
> # use caching
> modparam("domain", "db_mode", 1)
> # register callback to match myself condition with domains list
> modparam("domain", "register_myself", 1)
> #!endif
>
>
> #!ifdef WITH_PRESENCE
> # ----- presence params -----
> modparam("presence", "db_url", DBURL)
>
> # ----- presence_xml params -----
> modparam("presence_xml", "db_url", DBURL)
> modparam("presence_xml", "force_active", 1)
> #!endif
>
>
> #!ifdef WITH_NAT
> # ----- rtpproxy params -----
> modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:7722
> <http://127.0.0.1:7722>")
>
> # ----- nathelper params -----
> modparam("nathelper", "natping_interval", 30)
> modparam("nathelper", "ping_nated_only", 1)
> modparam("nathelper", "sipping_bflag", FLB_NATSIPPING)
> modparam("nathelper", "sipping_from", "sip:pinger at kamailio.org
> <mailto:sip%3Apinger at kamailio.org>")
>
> # params needed for NAT traversal in other modules
> modparam("nathelper|registrar", "received_avp", "$avp(RECEIVED)")
> modparam("usrloc", "nat_bflag", FLB_NATB)
> #!endif
>
>
> #!ifdef WITH_TLS
> # ----- tls params -----
> modparam("tls", "config", "/etc/kamailio/tls.cfg")
> #!endif
>
> #!ifdef WITH_ANTIFLOOD
> # ----- pike params -----
> modparam("pike", "sampling_time_unit", 2)
> modparam("pike", "reqs_density_per_unit", 16)
> modparam("pike", "remove_latency", 4)
>
> # ----- htable params -----
> # ip ban htable with autoexpire after 5 minutes
> modparam("htable", "htable", "ipban=>size=8;autoexpire=300;")
> #!endif
>
> #!ifdef WITH_XMLRPC
> # ----- xmlrpc params -----
> modparam("xmlrpc", "route", "XMLRPC");
> modparam("xmlrpc", "url_match", "^/RPC")
> #!endif
>
> ####### Routing Logic ########
>
>
> # Main SIP request routing logic
> # - processing of any incoming SIP request starts with this route
> route {
>
> # per request initial checks
> route(REQINIT);
>
> # NAT detection
> route(NAT);
>
> # handle requests within SIP dialogs
> route(WITHINDLG);
>
> ### only initial requests (no To tag)
>
> # CANCEL processing
> if (is_method("CANCEL"))
> {
> if (t_check_trans())
> t_relay();
> exit;
> }
>
> t_check_trans();
>
> # authentication
> route(AUTH);
>
> # record routing for dialog forming requests (in case they are routed)
> # - remove preloaded route headers
> remove_hf("Route");
> if (is_method("INVITE|SUBSCRIBE"))
> record_route();
>
> # account only INVITEs
> if (is_method("INVITE"))
> {
> setflag(FLT_ACC); # do accounting
> }
>
> # dispatch requests to foreign domains
> route(SIPOUT);
>
> ### requests for my local domains
>
> # handle presence related requests
> route(PRESENCE);
>
> # handle registrations
> route(REGISTRAR);
>
> if ($rU==$null)
> {
> # request with no Username in RURI
> sl_send_reply("484","Address Incomplete");
> exit;
> }
>
> # dispatch destinations to PSTN
> route(PSTN);
>
> # user location service
> route(LOCATION);
>
> route(RELAY);
> }
>
>
> route[RELAY] {
> #!ifdef WITH_NAT
> if (check_route_param("nat=yes")) {
> setbflag(FLB_NATB);
> }
> if (isflagset(FLT_NATS) || isbflagset(FLB_NATB)) {
> route(RTPPROXY);
> }
> #!endif
>
> /* example how to enable some additional event routes */
> if (is_method("INVITE")) {
> #t_on_branch("BRANCH_ONE");
> t_on_reply("REPLY_ONE");
> t_on_failure("FAIL_ONE");
> }
>
> if (!t_relay()) {
> sl_reply_error();
> }
> exit;
> }
>
> # Per SIP request initial checks
> route[REQINIT] {
> #!ifdef WITH_ANTIFLOOD
> # flood dection from same IP and traffic ban for a while
> # be sure you exclude checking trusted peers, such as pstn gateways
> # - local host excluded (e.g., loop to self)
> if(src_ip!=myself)
> {
> if($sht(ipban=>$si)!=$null)
> {
> # ip is already blocked
> xdbg("request from blocked IP - $rm from $fu (IP:$si:$sp)\n");
> exit;
> }
> if (!pike_check_req())
> {
> xlog("L_ALERT","ALERT: pike blocking $rm from $fu
> (IP:$si:$sp)\n");
> $sht(ipban=>$si) = 1;
> exit;
> }
> }
> #!endif
>
> if (!mf_process_maxfwd_header("10")) {
> sl_send_reply("483","Too Many Hops");
> exit;
> }
>
> if(!sanity_check("1511", "7"))
> {
> xlog("Malformed SIP message from $si:$sp\n");
> exit;
> }
> }
>
> # Handle requests within SIP dialogs
> route[WITHINDLG] {
> if (has_totag()) {
> # sequential request withing a dialog should
> # take the path determined by record-routing
> if (loose_route()) {
> if (is_method("BYE")) {
> setflag(FLT_ACC); # do accounting ...
> setflag(FLT_ACCFAILED); # ... even if the transaction
> fails
> }
> route(RELAY);
> } else {
> if (is_method("SUBSCRIBE") && uri == myself) {
> # in-dialog subscribe requests
> route(PRESENCE);
> exit;
> }
> if ( is_method("ACK") ) {
> if ( t_check_trans() ) {
> # no loose-route, but stateful ACK;
> # must be an ACK after a 487
> # or e.g. 404 from upstream server
> t_relay();
> exit;
> } else {
> # ACK without matching transaction ... ignore and
> discard
> exit;
> }
> }
> sl_send_reply("404","Not here");
> }
> exit;
> }
> }
>
> # Handle SIP registrations
> route[REGISTRAR] {
> if (is_method("REGISTER"))
> {
> if(isflagset(FLT_NATS))
> {
> setbflag(FLB_NATB);
> # uncomment next line to do SIP NAT pinging
> ## setbflag(FLB_NATSIPPING);
> }
> if (!save("location"))
> sl_reply_error();
>
> exit;
> }
> }
>
> # USER location service
> route[LOCATION] {
>
> #!ifdef WITH_ALIASDB
> # search in DB-based aliases
> alias_db_lookup("dbaliases");
> #!endif
>
> if (!lookup("location")) {
> switch ($rc) {
> case -1:
> case -3:
> t_newtran();
> t_reply("404", "Not Found");
> exit;
> case -2:
> sl_send_reply("405", "Method Not Allowed");
> exit;
> }
> }
>
> # when routing via usrloc, log the missed calls also
> if (is_method("INVITE"))
> {
> setflag(FLT_ACCMISSED);
> }
> }
>
> # Presence server route
> route[PRESENCE] {
> if(!is_method("PUBLISH|SUBSCRIBE"))
> return;
>
> #!ifdef WITH_PRESENCE
> if (!t_newtran())
> {
> sl_reply_error();
> exit;
> };
>
> if(is_method("PUBLISH"))
> {
> handle_publish();
> t_release();
> }
> else
> if( is_method("SUBSCRIBE"))
> {
> handle_subscribe();
> t_release();
> }
> exit;
> #!endif
>
> # if presence enabled, this part will not be executed
> if (is_method("PUBLISH") || $rU==$null)
> {
> sl_send_reply("404", "Not here");
> exit;
> }
> return;
> }
>
> # Authentication route
> route[AUTH] {
> #!ifdef WITH_AUTH
> if (is_method("REGISTER"))
> {
> # authenticate the REGISTER requests (uncomment to enable auth)
> if (!www_authorize("$td", "subscriber"))
> {
> www_challenge("$td", "0");
> exit;
> }
>
> if ($au!=$tU)
> {
> sl_send_reply("403","Forbidden auth ID");
> exit;
> }
> } else {
>
> #!ifdef WITH_IPAUTH
> if(allow_source_address())
> {
> # source IP allowed
> return;
> }
> #!endif
>
> # authenticate if from local subscriber
> if (from_uri==myself)
> {
> if (!proxy_authorize("$fd", "subscriber")) {
> proxy_challenge("$fd", "0");
> exit;
> }
> if (is_method("PUBLISH"))
> {
> if ($au!=$tU) {
> sl_send_reply("403","Forbidden auth ID");
> exit;
> }
> } else {
> if ($au!=$fU) {
> sl_send_reply("403","Forbidden auth ID");
> exit;
> }
> }
>
> consume_credentials();
> # caller authenticated
> } else {
> # caller is not local subscriber, then check if it calls
> # a local destination, otherwise deny, not an open relay here
> if (!uri==myself)
> {
> sl_send_reply("403","Not relaying");
> exit;
> }
> }
> }
> #!endif
> return;
> }
>
> # Caller NAT detection route
> route[NAT] {
> #!ifdef WITH_NAT
> force_rport();
> if (nat_uac_test("19")) {
> if (method=="REGISTER") {
> fix_nated_register();
> }
> else {
> fix_nated_contact();
> }
> setflag(FLT_NATS);
> }
> #!endif
> return;
> }
>
> # RTPProxy control
> route[RTPPROXY] {
> #!ifdef WITH_NAT
> if (is_method("BYE")) {
> unforce_rtp_proxy();
> } else if (is_method("INVITE")){
> force_rtp_proxy();
> }
> if (!has_totag()) add_rr_param(";nat=yes");
> #!endif
> return;
> }
>
> # Routing to foreign domains
> route[SIPOUT] {
> if (!uri==myself)
> {
> append_hf("P-hint: outbound\r\n");
> route(RELAY);
> }
> }
>
>
>
>
> }
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, May 27-29, 2015
Berlin, Germany - http://www.kamailioworld.com
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