Module: sip-router Branch: master Commit: bd12eaf0f26cfca55eda063263109d434be31c60 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=bd12eaf… Author: Richard Good &lt;richard.good(a)smilecoms.com&gt; Committer: Richard Good &lt;richard.good(a)smilecoms.com&gt; Date: Mon Aug 18 22:21:13 2014 +0200 modules/ims_qos: ignore reply retransmissions if Rx session being processed On receipt of Rx_AAR command check if session exists and it is not in state open If so then assume this is a retransmit and ignore --- modules/ims_qos/mod.c | 47 +++++++++++++++++++++++++++-------------------- 1 files changed, 27 insertions(+), 20 deletions(-) diff --git a/modules/ims_qos/mod.c b/modules/ims_qos/mod.c index 7605034..4f82adc 100644 --- a/modules/ims_qos/mod.c +++ b/modules/ims_qos/mod.c @@ -378,6 +378,7 @@ void callback_pcscf_contact_cb(struct pcontact *c, int type, void *param) { static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { int ret = CSCF_RETURN_ERROR; + int result = CSCF_RETURN_ERROR; struct cell *t; AAASession* auth_session; @@ -397,19 +398,19 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { char* direction = str1; if (fixup_get_svalue(msg, (gparam_t*) route, &route_name) != 0) { LM_ERR("no async route block for assign_server_unreg\n"); - return -1; + return result; } LM_DBG("Looking for route block [%.*s]\n", route_name.len, route_name.s); int ri = route_get(&main_rt, route_name.s); if (ri < 0) { LM_ERR("unable to find route block [%.*s]\n", route_name.len, route_name.s); - return -1; + return result; } cfg_action = main_rt.rlist[ri]; if (cfg_action == NULL) { LM_ERR("empty action lists in route block [%.*s]\n", route_name.len, route_name.s); - return -1; + return result; } LM_DBG("Rx AAR called\n"); @@ -419,7 +420,7 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { //We don't ever do AAR on request for calling scenario... if (msg->first_line.type != SIP_REPLY) { LM_DBG("Can't do AAR for call session in request\n"); - return CSCF_RETURN_ERROR; + return result; } //is it appropriate to send AAR at this stage? @@ -427,7 +428,7 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { if (t == NULL || t == T_UNDEFINED) { LM_WARN("Cannot get transaction for AAR based on SIP Request\n"); //goto aarna; - return CSCF_RETURN_ERROR; + return result; } //we dont apply QoS if its not a reply to an INVITE! or UPDATE or PRACK! @@ -438,39 +439,39 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { || cscf_get_content_length(t->uas.request) == 0) { LM_DBG("No SDP offer answer -> therefore we can not do Rx AAR"); //goto aarna; //AAR na if we dont have offer/answer pair - return CSCF_RETURN_ERROR; + return result; } } else { LM_DBG("Message is not response to INVITE, PRACK or UPDATE -> therefore we do not Rx AAR"); - return CSCF_RETURN_ERROR; + return result; } /* get callid, from and to tags to be able to identify dialog */ callid = cscf_get_call_id(msg, 0); if (callid.len <= 0 || !callid.s) { LM_ERR("unable to get callid\n"); - return CSCF_RETURN_ERROR; + return result; } if (!cscf_get_from_tag(msg, &ftag)) { LM_ERR("Unable to get ftag\n"); - return CSCF_RETURN_ERROR; + return result; } if (!cscf_get_to_tag(msg, &ttag)) { LM_ERR("Unable to get ttag\n"); - return CSCF_RETURN_ERROR; + return result; } //check to see that this is not a result of a retransmission in reply route only if (msg->cseq == NULL && ((parse_headers(msg, HDR_CSEQ_F, 0) == -1) || (msg->cseq == NULL))) { LM_ERR("No Cseq header found - aborting\n"); - return CSCF_RETURN_ERROR; + return result; } saved_t_data = (saved_transaction_t*) shm_malloc(sizeof (saved_transaction_t)); if (!saved_t_data) { LM_ERR("Unable to allocate memory for transaction data, trying to send AAR\n"); - return CSCF_RETURN_ERROR; + return result; } memset(saved_t_data, 0, sizeof (saved_transaction_t)); saved_t_data->act = cfg_action; @@ -480,7 +481,7 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { if (!saved_t_data->callid.s) { LM_ERR("no more memory trying to save transaction state : callid\n"); shm_free(saved_t_data); - return CSCF_RETURN_ERROR; + return result; } memset(saved_t_data->callid.s, 0, callid.len + 1); memcpy(saved_t_data->callid.s, callid.s, callid.len); @@ -491,7 +492,7 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { if (!saved_t_data->ttag.s) { LM_ERR("no more memory trying to save transaction state : ttag\n"); shm_free(saved_t_data); - return CSCF_RETURN_ERROR; + return result; } memset(saved_t_data->ttag.s, 0, ttag.len + 1); memcpy(saved_t_data->ttag.s, ttag.s, ttag.len); @@ -502,7 +503,7 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { if (!saved_t_data->ftag.s) { LM_ERR("no more memory trying to save transaction state : ftag\n"); shm_free(saved_t_data); - return CSCF_RETURN_ERROR; + return result; } memset(saved_t_data->ftag.s, 0, ftag.len + 1); memcpy(saved_t_data->ftag.s, ftag.s, ftag.len); @@ -512,7 +513,7 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { int branch; if (tmb.t_check( msg , &branch )==-1){ LOG(L_ERR, "ERROR: t_suspend: failed find UAC branch\n"); - return CSCF_RETURN_ERROR; + return result; } //Check that we dont already have an auth session for this specific dialog @@ -624,13 +625,18 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { } else { LM_DBG("Update AAR session for this dialog in mode %s\n", direction); auth_session = cdpb.AAAGetAuthSession(*rx_session_id); + if(auth_session->u.auth.state != AUTH_ST_OPEN) + { + LM_DBG("This session is not state open, packet will be dropped"); + result = CSCF_RETURN_FALSE; //here we return FALSE this just drops the message in the config file + goto error; + } } LM_DBG("Suspending SIP TM transaction\n"); if (tmb.t_suspend(msg, &saved_t_data->tindex, &saved_t_data->tlabel) < 0) { LM_ERR("failed to suspend the TM processing\n"); - free_saved_transaction_global_data(saved_t_data); - return CSCF_RETURN_ERROR; + goto error; } LM_DBG("Sending Rx AAR"); @@ -644,7 +650,8 @@ static int w_rx_aar(struct sip_msg *msg, char *route, char* str1, char* bar) { } else { LM_DBG("Successful async send of AAR\n"); - return CSCF_RETURN_BREAK; //on success we break - because rest of cfg file will be executed by async process + result = CSCF_RETURN_BREAK; + return result; //on success we break - because rest of cfg file will be executed by async process } error: @@ -659,7 +666,7 @@ error: must_free_asserted_identity = 1; } - return CSCF_RETURN_ERROR; + return result; } /* Wrapper to send AAR from config file - only used for registration */