Hi Guys,

I am using Kamailio-4.2.1. Earlier I was using shared memory of 16GB, which started popping out of memory error, within few seconds of generating load from sipp.

I used sipp following command:

sipp -s 999999999999 MY_KAM_IP -l 2500 -r 50

*Error coming is :* *Feb 4 14:12:23 kamailio_us_ha1 /usr/local/sbin/kamailio[27389]: ERROR: tm [t_reply.c:1946]: relay_reply(): ERROR: relay_reply: cannot alloc reply shmem*

After changing the shared memory to 1 GB, this error came quite late when generate load at 200 CPS. sipp -s 999999999999MY_KAM_IP -l 2500 -r 200

Why this is happening? I am using following configuration file( kamailio.cfg). Earliest possible help will be appreciated a lot!!

#!KAMAILIO # # Kamailio (OpenSER) SIP Server v4.0 - default configuration script # - web: http://www.kamailio.org # - git: http://sip-router.org # # Direct your questions about this file to: sr-users@lists.sip-router.org # # Refer to the Core CookBook at http://www.kamailio.org/wiki/ # for an explanation of possible statements, functions and parameters. # # Several features can be enabled using '#!define WITH_FEATURE' directives: # # *** To run in debug mode: # - define WITH_DEBUG # # *** To enable mysql: # - define WITH_MYSQL # # *** To enable authentication execute: # - enable mysql # - define WITH_AUTH # - add users using 'kamctl' # # *** To enable IP authentication execute: # - enable mysql # - enable authentication # - define WITH_IPAUTH # - add IP addresses with group id '1' to 'address' table # # *** To enable persistent user location execute: # - enable mysql # - define WITH_USRLOCDB # # *** To enable nat traversal execute: # - define WITH_NAT # - install RTPProxy: http://www.rtpproxy.org # - start RTPProxy: # rtpproxy -l _your_public_ip_ -s udp:localhost:7722 # # *** To enable TLS support execute: # - adjust CFGDIR/tls.cfg as needed # - define WITH_TLS # # *** To enhance accounting execute: # - enable mysql # - define WITH_ACCDB # - add following columns to database # define WITH_LCR to enable LCR # define WITH_CR to enable carrier route

#!define WITH_MYSQL #!define DBURL #!define WITH_USRLOCDB #!define WITH_FREESWITCH #!define WITH_ACCDB #!define WITH_AUTH #!define WITH_DEBUG #!define WITH_NAT #----#!define WITH_ANTIFLOOD #!define WITH_CR

#!ifdef WITH_FREESWITCH #freeswitch.bindip = "10.60.23.81" desc "FreeSWITCH IP Address" freeswitch.bindip = "54.254.97.209" desc "FreeSWITCH IP Address" freeswitch.bindport = "5060" desc "FreeSWITCH Port" #!endif

#!ifdef ACCDB_COMMENT ALTER TABLE acc ADD COLUMN src_user VARCHAR(64) NOT NULL DEFAULT ''; ALTER TABLE acc ADD COLUMN src_domain VARCHAR(128) NOT NULL DEFAULT ''; ALTER TABLE acc ADD COLUMN src_ip varchar(64) NOT NULL default ''; ALTER TABLE acc ADD COLUMN dst_ouser VARCHAR(64) NOT NULL DEFAULT ''; ALTER TABLE acc ADD COLUMN dst_user VARCHAR(64) NOT NULL DEFAULT ''; ALTER TABLE acc ADD COLUMN dst_domain VARCHAR(128) NOT NULL DEFAULT ''; ALTER TABLE missed_calls ADD COLUMN src_user VARCHAR(64) NOT NULL DEFAULT ''; ALTER TABLE missed_calls ADD COLUMN src_domain VARCHAR(128) NOT NULL DEFAULT ''; ALTER TABLE missed_calls ADD COLUMN src_ip varchar(64) NOT NULL default ''; ALTER TABLE missed_calls ADD COLUMN dst_ouser VARCHAR(64) NOT NULL DEFAULT ''; ALTER TABLE missed_calls ADD COLUMN dst_user VARCHAR(64) NOT NULL DEFAULT ''; ALTER TABLE missed_calls ADD COLUMN dst_domain VARCHAR(128) NOT NULL DEFAULT ''; #!endif

####### Include Local Config If Exists ######### import_file "kamailio-local.cfg" import_file "ip.cfg"

####### 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. #!ifndef DBURL #!define DBURL "mysql:// kamailio:kamailiorw@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio " #!endif #!endif #!define MULTIDOMAIN 0

# - 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 #########

### LOG Levels: 3=DBG, 2=INFO, 1=NOTICE, 0=WARN, -1=ERR #!ifdef WITH_DEBUG debug=-1 log_stderror=no #!else debug=-1 log_stderror=no #!endif

memdbg=2 memlog=2

log_facility=LOG_LOCAL0

fork=yes children=8

/* 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"

/* 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 #listen=udp:172.31.42.191:5060 advertise 54.254.97.209:5060 listen=LOCAL_BIND_PROTO_IP_UDP_PORT advertise ADVERTISED_BIND_IP_PORT listen=LOCAL_BIND_PROTO_IP_TCP_PORT advertise ADVERTISED_BIND_IP_PORT /* port to listen to * - can be specified more than once if needed to listen on many ports */ port=5060 mhomed=0

#!ifdef WITH_TLS enable_tls=yes #!endif

# life time of TCP connection when there is no traffic # - a bit higher than registration expires to cope with UA behind NAT tcp_connection_lifetime=3605

####### Modules Section ########

# set paths to location of modules (to sources or installation folders) #!ifdef WITH_SRCPATH mpath="modules_k:modules" #!else mpath="/usr/local/lib/kamailio/modules_k/:/usr/local/lib64/kamailio/modules/" #!endif

#!ifdef WITH_MYSQL loadmodule "db_mysql.so" #!endif

loadmodule "mi_fifo.so" loadmodule "kex.so" loadmodule "corex.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 "cfg_rpc.so" loadmodule "mi_rpc.so" loadmodule "acc.so" loadmodule "rtimer.so" loadmodule "sqlops.so" loadmodule "dispatcher.so" loadmodule "pdt.so" loadmodule "mi_datagram.so" loadmodule "domain.so" loadmodule "htable.so" loadmodule "pike.so"

#!ifdef WITH_LCR #Neeraj: Load LCR Module loadmodule "lcr.so" #!endif

#!ifdef WITH_CR #Neeraj: Load CR Module loadmodule "carrierroute.so" loadmodule "avpops.so" #!endif

#loadmodule "nat_traversal.so"

#!ifdef WITH_AUTH loadmodule "auth.so" loadmodule "auth_db.so" #!ifdef WITH_IPAUTH loadmodule "permissions.so" #!endif #!endif

#!ifdef WITH_NAT loadmodule "nathelper.so" loadmodule "rtpproxy.so" #!endif

#!ifdef WITH_TLS loadmodule "tls.so" #!endif

#!ifdef WITH_DEBUG loadmodule "debugger.so" #!endif

# ----------------- setting module-specific parameters ---------------

# for mi_datagram modparam("mi_datagram", "socket_name", "udp:127.0.0.1:8033")

# for sqlops modparam("rtimer", "timer", "name=cdr;interval=300;mode=1;") modparam("rtimer", "exec", "timer=cdr;route=CDRS") modparam("sqlops", "sqlcon", "cb=>mysql:// kamailio:kamailiorw@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio ")

# for domain modparam("domain", "db_url", "mysql:// kamailio:kamailiorw@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio ") #modparam("domain", "db_mode", 1) # Use caching modparam("domain", "domain_table", "domain") modparam("domain", "register_myself", 1)

# ----- 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: 3sec modparam("tm", "fr_timer", 30000) # default invite retransmission timeout after 1xx: 5sec modparam("tm", "fr_inv_timer", 30000)

# ----- dispatcher params ----- modparam("dispatcher", "db_url","mysql:// kamailio:kamailiorw@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio ") modparam("dispatcher", "table_name", "dispatcher") modparam("dispatcher", "flags", 2) modparam("dispatcher", "dst_avp", "$avp(AVP_DST)") modparam("dispatcher", "grp_avp", "$avp(AVP_GRP)") modparam("dispatcher", "cnt_avp", "$avp(AVP_CNT)")

# ---- pdt params------ modparam("pdt", "db_url","mysql:// kamailio:kamailiorw@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio ") #modparam("pdt", "table_name", "pdt") modparam("pdt", "fetch_rows", 4000) modparam("pdt", "check_domain", 0)

# ----- 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", 1)

# ----- 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 1 contacts per AOR */ modparam("registrar", "max_contacts", 1) # max value for expires of registrations modparam("registrar", "max_expires", 3600) # set it to 1 to enable GRUU modparam("registrar", "gruu_enabled", 0)

# ----- 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", 1) /* 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;src_ip=$si;" "dst_ouser=$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", "mysql:// kamailio:kamailiorw@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio ") modparam("acc", "db_extra", "src_user=$fU;src_domain=$fd;src_ip=$si;" "dst_ouser=$tU;dst_user=$rU;dst_domain=$rd") #!endif

# ----- usrloc params ----- /* enable DB persistency for location entries */ #!ifdef WITH_USRLOCDB modparam("usrloc", "db_url", "mysql:// kamailio:kamailiorw@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio ") # Neeraj : Disabled Saving Location in DB #modparam("usrloc", "db_mode", 2) modparam("usrloc", "db_mode", 0) # Neeraj : Enabling Multiple Domain modparam("usrloc", "use_domain", MULTIDOMAIN) #!endif

# ----- auth_db params ----- #!ifdef WITH_AUTH modparam("auth_db", "db_url","mysql:// kamailio:kamailiorw@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio ") 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

#!ifdef WITH_NAT # ----- rtpproxy params ----- #modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:7722") modparam("rtpproxy", "rtpproxy_sock", "udp:10.0.0.121:22222")

# ----- 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@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", "/usr/local/etc/kamailio/tls.cfg") #!endif

#!ifdef WITH_DEBUG # ----- debugger params ----- modparam("debugger", "cfgtrace", 0) #!endif

#!ifdef WITH_LCR modparam("lcr", "db_url", "mysql:// kamailioro:kamailioro@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio ") modparam("lcr", "gw_uri_avp", "$avp(i:709)") modparam("lcr", "ruri_user_avp", "$avp(i:500)") modparam("lcr", "tag_avp", "$avp(lcr_tag)") modparam("lcr", "flags_avp", "$avp(i:712)") modparam("lcr", "lcr_id_avp", "$avp(s:lcr_id_avp)") modparam("lcr", "defunct_gw_avp", "$avp(s:defunct_gw_avp)") #!endif

#!ifdef WITH_CR #Neeraj: ----carrierroute params------- modparam("carrierroute", "config_source", "db") modparam("carrierroute", "db_url", "mysql:// kamailioro:kamailioro@kamailio-us.cejtf390jur8.us-east-1.rds.amazonaws.com/kamailio ") modparam("carrierroute", "carrierroute_table", "carrierroute") modparam("carrierroute", "default_tree", "default") modparam("carrierroute", "fetch_rows", 2000) #!endif ####### Routing Logic ########

# Main SIP request routing logic # - processing of any incoming SIP request starts with this route # - note: this is the same as route { ... } request_route {

# per request initial checks route(REQINIT);

# NAT detection route(NATDETECT);

# CANCEL processing if (is_method("CANCEL")) { if (t_check_trans()) { route(RELAY); } exit; }

# handle requests within SIP dialogs route(WITHINDLG);

### only initial requests (no To tag)

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 }

#!ifdef WITH_LCR #Neeraj: oute request to LCR route(LCR); #!endif

# dispatch requests to foreign domains route(SIPOUT);

### requests for my local domains

# handle registrations route(REGISTRAR);

if ($rU==$null) { # request with no Username in RURI sl_send_reply("484","Address Incomplete"); exit; }

#!ifdef WITH_CR # route(CARRIER_ROUTE); #!endif # user location service route(LOCATION);

} #!ifdef WITH_CR route[CARRIER_ROUTE] { if(!cr_route("default", "default", "$rU", "$rU", "call_id")){ sl_send_reply("403", "Not Carrier Found"); exit; } else { # In case of failure, re-route the request #t_on_failure(1); t_on_failure("MANAGE_FAILURE"); # Relay the request to the gateway # t_relay(); } }

failure_route[1] { xlog("route[FAILOVER_ROUTE: called"); # In case of failure, send it to an alternative route: if (t_check_status("403|5[0-9][0-9]")) { #choose route domain 1 of the default carrier if(!cr_route("failover", "failover", "$rU", "$rU", "call_id")){ t_reply("403", "Not allowed"); } else { t_on_failure("2"); # t_relay(); } } } #!endif

#!ifdef WITH_CR_OLD route[CARRIER_ROUTE] { xlog("route[CARRIER_ROUTE: called"); # LOOKUP ROUTE TABLE WHEN ASKED BY HEADER: X-ROUTE:LOOKUP if (is_method("INVITE") && $hdr(X-ROUTE)=="LOOKUP"){ if(!cr_route("default", "default", "$rU", "$rU", "call_id","$avp(s:route_desc)")){ xlog("CARRIER_ROUTE:ROUTING FAILED: no route found for $rU"); sl_send_reply("604", "Unable to route this call"); exit; } else { xlog("CARRIER_ROUTE:LOOKUP FOUND: $rd $avp(s:route_desc)"); avp_pushto("$ru/username", "$avp(s:route_desc)"); sl_send_reply("302", "$rd"); exit; } } else {

xlog("route[CARRIER_ROUTE: method is not either INVITE or X-ROUTE LOOKUP");

} } #!endif

#!ifdef WITH_LCR route[LCR] { if (status=="200") { xlog("LCR: Inside the LCR route\n"); }

if(method=="INVITE") { xlog("We got an invite for: '$rU'"); if(!load_gws(1, $rU, $var(caller_uri))) { xlog("Couldn't load gateways"); sl_send_reply("500", "Server Internal Error - Cannot load gateways"); exit; } else { xlog("GW Selected '$avp(i:709)'\n"); xlog("Domain of destination: $dd\n"); xlog("To URI: $tu\n"); }

if(!next_gw()) { xlog("Couldn't proceed to next gateway"); sl_send_reply("503", "Service not available, no gateways found"); exit; } else { xlog("Calling the first matched gateway\n"); xlog("ruri_user_avp: '$avp(i:500)'\n"); xlog("To URI after next_gw: $tu\n"); xlog("Request URI: $rU\n");

}

}; } #!endif

route[FSDISPATCH] { # dial number selection route(FSRELAY); exit; }

route[FSRELAY] { $du = "sip:" + $sel(cfg_get.freeswitch.bindip) + ":" + $sel(cfg_get.freeswitch.bindport); if($var(newbranch)==1) { append_branch(); $var(newbranch) = 0; } route(RELAY); exit; }

route[RELAY] { #!ifdef WITH_NAT if (check_route_param("nat=yes")) { setbflag(FLB_NATB); } #!endif # enable additional event routes for forwarded requests # - serial forking, RTP relaying handling, a.s.o. 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; }

# 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()) { route(DLGURI); if (is_method("BYE")) { setflag(FLT_ACC); # do accounting ... setflag(FLT_ACCFAILED); # ... even if the transaction fails } else if ( is_method("ACK") ) { # ACK is forwarded statelessy route(NATMANAGE); } else if ( is_method("NOTIFY") ) { # Add Record-Route for in-dialog NOTIFY as per RFC 6665. record_route(); } route(RELAY); } else { 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 route(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",5)) sl_reply_error();

exit; } }

# USER location service route[LOCATION] { if (!lookup("location")) { $var(rc) = $rc; t_newtran(); switch ($var(rc)) { case -1: case -3: if(!cr_route("default", "default", "$rU", "$rU", "call_id")){ sl_send_reply("403", "Not Carrier Found"); exit; } break; case -2: send_reply("405", "Method Not Allowed"); exit; } }

# when routing via usrloc, log the missed calls also if (is_method("INVITE")) { setflag(FLT_ACCMISSED); }

route(RELAY); exit; }

# Authentication route route[AUTH] { #!ifdef WITH_AUTH

#!ifdef WITH_IPAUTH if((!is_method("REGISTER")) && allow_source_address()) { # source IP allowed return; } #!endif

if (is_method("REGISTER") || from_uri==myself) { # authenticate requests if (!auth_check("$fd", "subscriber", "1")) { auth_challenge("$fd", "0"); exit; } # user authenticated - remove auth header if(!is_method("REGISTER|PUBLISH")) consume_credentials(); } # if caller is not local subscriber, then check if it calls # a local destination, otherwise deny, not an open relay here if (from_uri!=myself && uri!=myself) { sl_send_reply("403","Not relaying"); exit; }

#!endif return; }

# Caller NAT detection route route[NATDETECT] { #!ifdef WITH_NAT force_rport(); if (nat_uac_test("19")) { if (is_method("REGISTER")) { # fix_nated_register(); fix_nated_contact(); } else { add_contact_alias(); } setflag(FLT_NATS); } #!endif return; }

# RTPProxy control route[NATMANAGE] { #!ifdef WITH_NAT if (is_request()) { if(has_totag()) { if(check_route_param("nat=yes")) { setbflag(FLB_NATB); } } } if (!(isflagset(FLT_NATS) || isbflagset(FLB_NATB))) return;

rtpproxy_manage("co");

if (is_request()) { if (!has_totag()) { if(t_is_branch_route()) { add_rr_param(";nat=yes"); } } } if (is_reply()) { if(isbflagset(FLB_NATB)) { add_contact_alias(); } } #!endif return; }

# URI update for dialog requests route[DLGURI] { #!ifdef WITH_NAT if(!isdsturiset()) { handle_ruri_alias(); } #!endif return; }

route[CDRS] { sql_query("cb","call kamailio_cdrs()","rb"); sql_query("cb","call kamailio_rating('default')","rb");

}

# Routing to foreign domains route[SIPOUT] { if (!uri==myself) { append_hf("P-hint: outbound\r\n"); route(RELAY); } }

# manage outgoing branches branch_route[MANAGE_BRANCH] { xdbg("new branch [$T_branch_idx] to $ru\n"); route(NATMANAGE); }

# manage incoming replies onreply_route[MANAGE_REPLY] { xdbg("incoming reply\n"); if(status=~"[12][0-9][0-9]") route(NATMANAGE); }

# manage failure routing cases failure_route[MANAGE_FAILURE] { route(NATMANAGE);

if (t_is_canceled()) { exit; } }

# Dispatch requests route[DISPATCH] { # round robin dispatching on gateways group '1' if(!ds_select_dst("1", "4")) { send_reply("404", "No destination"); exit; } xlog("L_DBG", "--- SCRIPT: going to <$ru> via <$du>\n"); t_on_failure("RTF_DISPATCH"); return; }

# Sample failure route failure_route[RTF_DISPATCH] { if (t_is_canceled()) { exit; } # next DST - only for 500 or local timeout if (t_check_status("500") or (t_branch_timeout() and !t_branch_replied())) { if(ds_next_dst()) { t_on_failure("RTF_DISPATCH"); route(RELAY); exit; } } }

Regards Neeraj Swarnkar