/* $Id$ */ /* * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) * Copyright (C) 2003-2008 Benny Prijono * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #define THIS_FILE "pjsua_call.c" /* Retry interval of sending re-INVITE for locking a codec when remote * SDP answer contains multiple codec, in milliseconds. */ #define LOCK_CODEC_RETRY_INTERVAL 200 /* * Max UPDATE/re-INVITE retry to lock codec */ #define LOCK_CODEC_MAX_RETRY 5 /* * The INFO method. */ const pjsip_method pjsip_info_method = { PJSIP_OTHER_METHOD, { "INFO", 4 } }; /* This callback receives notification from invite session when the * session state has changed. */ static void pjsua_call_on_state_changed(pjsip_inv_session *inv, pjsip_event *e); /* This callback is called by invite session framework when UAC session * has forked. */ static void pjsua_call_on_forked( pjsip_inv_session *inv, pjsip_event *e); /* * Callback to be called when SDP offer/answer negotiation has just completed * in the session. This function will start/update media if negotiation * has succeeded. */ static void pjsua_call_on_media_update(pjsip_inv_session *inv, pj_status_t status); /* * Called when session received new offer. */ static void pjsua_call_on_rx_offer(pjsip_inv_session *inv, const pjmedia_sdp_session *offer); /* * Called to generate new offer. */ static void pjsua_call_on_create_offer(pjsip_inv_session *inv, pjmedia_sdp_session **offer); /* * This callback is called when transaction state has changed in INVITE * session. We use this to trap: * - incoming REFER request. * - incoming MESSAGE request. */ static void pjsua_call_on_tsx_state_changed(pjsip_inv_session *inv, pjsip_transaction *tsx, pjsip_event *e); /* * Redirection handler. */ static pjsip_redirect_op pjsua_call_on_redirected(pjsip_inv_session *inv, const pjsip_uri *target, const pjsip_event *e); /* Create SDP for call hold. */ static pj_status_t create_sdp_of_call_hold(pjsua_call *call, pjmedia_sdp_session **p_sdp); /* * Callback called by event framework when the xfer subscription state * has changed. */ static void xfer_client_on_evsub_state( pjsip_evsub *sub, pjsip_event *event); static void xfer_server_on_evsub_state( pjsip_evsub *sub, pjsip_event *event); /* * Reset call descriptor. */ static void reset_call(pjsua_call_id id) { pjsua_call *call = &pjsua_var.calls[id]; call->index = id; call->inv = NULL; call->user_data = NULL; call->session = NULL; call->audio_idx = -1; call->ssrc = pj_rand(); call->rtp_tx_seq = 0; call->rtp_tx_ts = 0; call->rtp_tx_seq_ts_set = 0; call->xfer_sub = NULL; call->last_code = (pjsip_status_code) 0; call->conf_slot = PJSUA_INVALID_ID; call->last_text.ptr = call->last_text_buf_; call->last_text.slen = 0; call->conn_time.sec = 0; call->conn_time.msec = 0; call->res_time.sec = 0; call->res_time.msec = 0; call->rem_nat_type = PJ_STUN_NAT_TYPE_UNKNOWN; call->rem_srtp_use = PJMEDIA_SRTP_DISABLED; call->local_hold = PJ_FALSE; pj_bzero(&call->lock_codec, sizeof(call->lock_codec)); } /* * Init call subsystem. */ pj_status_t pjsua_call_subsys_init(const pjsua_config *cfg) { pjsip_inv_callback inv_cb; unsigned i; const pj_str_t str_norefersub = { "norefersub", 10 }; pj_status_t status; /* Init calls array. */ for (i=0; i= PJSUA_MAX_CALLS) { pjsua_var.ua_cfg.max_calls = PJSUA_MAX_CALLS; } /* Check the route URI's and force loose route if required */ for (i=0; i= (int)pjsua_var.ua_cfg.max_calls || pjsua_var.next_call_id < 0) { pjsua_var.next_call_id = 0; } for (cid=pjsua_var.next_call_id; cid<(int)pjsua_var.ua_cfg.max_calls; ++cid) { if (pjsua_var.calls[cid].inv == NULL) { ++pjsua_var.next_call_id; return cid; } } for (cid=0; cid < pjsua_var.next_call_id; ++cid) { if (pjsua_var.calls[cid].inv == NULL) { ++pjsua_var.next_call_id; return cid; } } #else /* Old algorithm */ for (cid=0; cid<(int)pjsua_var.ua_cfg.max_calls; ++cid) { if (pjsua_var.calls[cid].inv == NULL) return cid; } #endif return PJSUA_INVALID_ID; } /* Get signaling secure level. * Return: * 0: if signaling is not secure * 1: if TLS transport is used for immediate hop * 2: if end-to-end signaling is secure. */ static int get_secure_level(pjsua_acc_id acc_id, const pj_str_t *dst_uri) { const pj_str_t tls = pj_str(";transport=tls"); const pj_str_t sips = pj_str("sips:"); pjsua_acc *acc = &pjsua_var.acc[acc_id]; if (pj_stristr(dst_uri, &sips)) return 2; if (!pj_list_empty(&acc->route_set)) { pjsip_route_hdr *r = acc->route_set.next; pjsip_uri *uri = r->name_addr.uri; pjsip_sip_uri *sip_uri; sip_uri = (pjsip_sip_uri*)pjsip_uri_get_uri(uri); if (pj_stricmp2(&sip_uri->transport_param, "tls")==0) return 1; } else { if (pj_stristr(dst_uri, &tls)) return 1; } return 0; } /* static int call_get_secure_level(pjsua_call *call) { if (call->inv->dlg->secure) return 2; if (!pj_list_empty(&call->inv->dlg->route_set)) { pjsip_route_hdr *r = call->inv->dlg->route_set.next; pjsip_uri *uri = r->name_addr.uri; pjsip_sip_uri *sip_uri; sip_uri = (pjsip_sip_uri*)pjsip_uri_get_uri(uri); if (pj_stricmp2(&sip_uri->transport_param, "tls")==0) return 1; } else { pjsip_sip_uri *sip_uri; if (PJSIP_URI_SCHEME_IS_SIPS(call->inv->dlg->target)) return 2; if (!PJSIP_URI_SCHEME_IS_SIP(call->inv->dlg->target)) return 0; sip_uri = (pjsip_sip_uri*) pjsip_uri_get_uri(call->inv->dlg->target); if (pj_stricmp2(&sip_uri->transport_param, "tls")==0) return 1; } return 0; } */ /* * Make outgoing call to the specified URI using the specified account. */ PJ_DEF(pj_status_t) pjsua_call_make_call( pjsua_acc_id acc_id, const pj_str_t *dest_uri, unsigned options, void *user_data, const pjsua_msg_data *msg_data, pjsua_call_id *p_call_id) { pj_pool_t *tmp_pool; pjsip_dialog *dlg = NULL; pjmedia_sdp_session *offer; pjsip_inv_session *inv = NULL; pjsua_acc *acc; pjsua_call *call; int call_id = -1; pj_str_t contact; pjsip_tx_data *tdata; pj_status_t status; /* Check that account is valid */ PJ_ASSERT_RETURN(acc_id>=0 || acc_id<(int)PJ_ARRAY_SIZE(pjsua_var.acc), PJ_EINVAL); /* Check arguments */ PJ_ASSERT_RETURN(dest_uri, PJ_EINVAL); PJSUA_LOCK(); /* Create sound port if none is instantiated, to check if sound device * can be used. But only do this with the conference bridge, as with * audio switchboard (i.e. APS-Direct), we can only open the sound * device once the correct format has been known */ if (!pjsua_var.is_mswitch && pjsua_var.snd_port==NULL && pjsua_var.null_snd==NULL && !pjsua_var.no_snd) { pj_status_t status; status = pjsua_set_snd_dev(pjsua_var.cap_dev, pjsua_var.play_dev); if (status != PJ_SUCCESS) { PJSUA_UNLOCK(); return status; } } acc = &pjsua_var.acc[acc_id]; if (!acc->valid) { pjsua_perror(THIS_FILE, "Unable to make call because account " "is not valid", PJ_EINVALIDOP); PJSUA_UNLOCK(); return PJ_EINVALIDOP; } /* Find free call slot. */ call_id = alloc_call_id(); if (call_id == PJSUA_INVALID_ID) { pjsua_perror(THIS_FILE, "Error making call", PJ_ETOOMANY); PJSUA_UNLOCK(); return PJ_ETOOMANY; } call = &pjsua_var.calls[call_id]; /* Associate session with account */ call->acc_id = acc_id; call->call_hold_type = acc->cfg.call_hold_type; /* Create temporary pool */ tmp_pool = pjsua_pool_create("tmpcall10", 512, 256); /* Verify that destination URI is valid before calling * pjsua_acc_create_uac_contact, or otherwise there * a misleading "Invalid Contact URI" error will be printed * when pjsua_acc_create_uac_contact() fails. */ if (1) { pjsip_uri *uri; pj_str_t dup; pj_strdup_with_null(tmp_pool, &dup, dest_uri); uri = pjsip_parse_uri(tmp_pool, dup.ptr, dup.slen, 0); if (uri == NULL) { pjsua_perror(THIS_FILE, "Unable to make call", PJSIP_EINVALIDREQURI); pj_pool_release(tmp_pool); PJSUA_UNLOCK(); return PJSIP_EINVALIDREQURI; } } PJ_LOG(4,(THIS_FILE, "Making call with acc #%d to %.*s", acc_id, (int)dest_uri->slen, dest_uri->ptr)); /* Mark call start time. */ pj_gettimeofday(&call->start_time); /* Reset first response time */ call->res_time.sec = 0; /* Create suitable Contact header unless a Contact header has been * set in the account. */ if (acc->contact.slen) { contact = acc->contact; } else { status = pjsua_acc_create_uac_contact(tmp_pool, &contact, acc_id, dest_uri); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to generate Contact header", status); pj_pool_release(tmp_pool); PJSUA_UNLOCK(); return status; } } /* Create outgoing dialog: */ status = pjsip_dlg_create_uac( pjsip_ua_instance(), &acc->cfg.id, &contact, dest_uri, dest_uri, &dlg); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Dialog creation failed", status); pj_pool_release(tmp_pool); PJSUA_UNLOCK(); return status; } /* Increment the dialog's lock otherwise when invite session creation * fails the dialog will be destroyed prematurely. */ pjsip_dlg_inc_lock(dlg); /* Calculate call's secure level */ call->secure_level = get_secure_level(acc_id, dest_uri); /* Init media channel */ status = pjsua_media_channel_init(call->index, PJSIP_ROLE_UAC, call->secure_level, dlg->pool, NULL, NULL); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Error initializing media channel", status); goto on_error; } /* Create offer */ status = pjsua_media_channel_create_sdp(call->index, dlg->pool, NULL, &offer, NULL); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Error initializing media channel", status); goto on_error; } /* Create the INVITE session: */ options |= PJSIP_INV_SUPPORT_100REL; if (acc->cfg.require_100rel == PJSUA_100REL_MANDATORY) options |= PJSIP_INV_REQUIRE_100REL; if (acc->cfg.use_timer != PJSUA_SIP_TIMER_INACTIVE) { options |= PJSIP_INV_SUPPORT_TIMER; if (acc->cfg.use_timer == PJSUA_SIP_TIMER_REQUIRED) options |= PJSIP_INV_REQUIRE_TIMER; else if (acc->cfg.use_timer == PJSUA_SIP_TIMER_ALWAYS) options |= PJSIP_INV_ALWAYS_USE_TIMER; } status = pjsip_inv_create_uac( dlg, offer, options, &inv); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Invite session creation failed", status); goto on_error; } /* Init Session Timers */ status = pjsip_timer_init_session(inv, &acc->cfg.timer_setting); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Session Timer init failed", status); goto on_error; } /* Create and associate our data in the session. */ call->inv = inv; dlg->mod_data[pjsua_var.mod.id] = call; inv->mod_data[pjsua_var.mod.id] = call; /* Attach user data */ call->user_data = user_data; /* If account is locked to specific transport, then lock dialog * to this transport too. */ if (acc->cfg.transport_id != PJSUA_INVALID_ID) { pjsip_tpselector tp_sel; pjsua_init_tpselector(acc->cfg.transport_id, &tp_sel); pjsip_dlg_set_transport(dlg, &tp_sel); } /* Set dialog Route-Set: */ if (!pj_list_empty(&acc->route_set)) pjsip_dlg_set_route_set(dlg, &acc->route_set); /* Set credentials: */ if (acc->cred_cnt) { pjsip_auth_clt_set_credentials( &dlg->auth_sess, acc->cred_cnt, acc->cred); } /* Set authentication preference */ pjsip_auth_clt_set_prefs(&dlg->auth_sess, &acc->cfg.auth_pref); /* Create initial INVITE: */ status = pjsip_inv_invite(inv, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create initial INVITE request", status); goto on_error; } /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Must increment call counter now */ ++pjsua_var.call_cnt; /* Send initial INVITE: */ status = pjsip_inv_send_msg(inv, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send initial INVITE request", status); /* Upon failure to send first request, the invite * session would have been cleared. */ inv = NULL; goto on_error; } /* Done. */ if (p_call_id) *p_call_id = call_id; pjsip_dlg_dec_lock(dlg); pj_pool_release(tmp_pool); PJSUA_UNLOCK(); return PJ_SUCCESS; on_error: if (dlg) { /* This may destroy the dialog */ pjsip_dlg_dec_lock(dlg); } if (inv != NULL) { pjsip_inv_terminate(inv, PJSIP_SC_OK, PJ_FALSE); } if (call_id != -1) { reset_call(call_id); pjsua_media_channel_deinit(call_id); } pj_pool_release(tmp_pool); PJSUA_UNLOCK(); return status; } /* Get the NAT type information in remote's SDP */ static void update_remote_nat_type(pjsua_call *call, const pjmedia_sdp_session *sdp) { const pjmedia_sdp_attr *xnat; xnat = pjmedia_sdp_attr_find2(sdp->attr_count, sdp->attr, "X-nat", NULL); if (xnat) { call->rem_nat_type = (pj_stun_nat_type) (xnat->value.ptr[0] - '0'); } else { call->rem_nat_type = PJ_STUN_NAT_TYPE_UNKNOWN; } PJ_LOG(5,(THIS_FILE, "Call %d: remote NAT type is %d (%s)", call->index, call->rem_nat_type, pj_stun_get_nat_name(call->rem_nat_type))); } /** * Handle incoming INVITE request. * Called by pjsua_core.c */ pj_bool_t pjsua_call_on_incoming(pjsip_rx_data *rdata) { pj_str_t contact; pjsip_dialog *dlg = pjsip_rdata_get_dlg(rdata); pjsip_dialog *replaced_dlg = NULL; pjsip_transaction *tsx = pjsip_rdata_get_tsx(rdata); pjsip_msg *msg = rdata->msg_info.msg; pjsip_tx_data *response = NULL; unsigned options = 0; pjsip_inv_session *inv = NULL; int acc_id; pjsua_call *call; int call_id = -1; int sip_err_code; pjmedia_sdp_session *offer=NULL, *answer; pj_status_t status; /* Don't want to handle anything but INVITE */ if (msg->line.req.method.id != PJSIP_INVITE_METHOD) return PJ_FALSE; /* Don't want to handle anything that's already associated with * existing dialog or transaction. */ if (dlg || tsx) return PJ_FALSE; /* Don't want to accept the call if shutdown is in progress */ if (pjsua_var.thread_quit_flag) { pjsip_endpt_respond_stateless(pjsua_var.endpt, rdata, PJSIP_SC_TEMPORARILY_UNAVAILABLE, NULL, NULL, NULL); return PJ_TRUE; } PJSUA_LOCK(); /* Find free call slot. */ call_id = alloc_call_id(); if (call_id == PJSUA_INVALID_ID) { pjsip_endpt_respond_stateless(pjsua_var.endpt, rdata, PJSIP_SC_BUSY_HERE, NULL, NULL, NULL); PJ_LOG(2,(THIS_FILE, "Unable to accept incoming call (too many calls)")); PJSUA_UNLOCK(); return PJ_TRUE; } /* Clear call descriptor */ reset_call(call_id); call = &pjsua_var.calls[call_id]; /* Mark call start time. */ pj_gettimeofday(&call->start_time); /* Check INVITE request for Replaces header. If Replaces header is * present, the function will make sure that we can handle the request. */ status = pjsip_replaces_verify_request(rdata, &replaced_dlg, PJ_FALSE, &response); if (status != PJ_SUCCESS) { /* * Something wrong with the Replaces header. */ if (response) { pjsip_response_addr res_addr; pjsip_get_response_addr(response->pool, rdata, &res_addr); pjsip_endpt_send_response(pjsua_var.endpt, &res_addr, response, NULL, NULL); } else { /* Respond with 500 (Internal Server Error) */ pjsip_endpt_respond_stateless(pjsua_var.endpt, rdata, 500, NULL, NULL, NULL); } PJSUA_UNLOCK(); return PJ_TRUE; } /* If this INVITE request contains Replaces header, notify application * about the request so that application can do subsequent checking * if it wants to. */ if (replaced_dlg != NULL && pjsua_var.ua_cfg.cb.on_call_replace_request) { pjsua_call *replaced_call; int st_code = 200; pj_str_t st_text = { "OK", 2 }; /* Get the replaced call instance */ replaced_call = (pjsua_call*) replaced_dlg->mod_data[pjsua_var.mod.id]; /* Notify application */ pjsua_var.ua_cfg.cb.on_call_replace_request(replaced_call->index, rdata, &st_code, &st_text); /* Must specify final response */ PJ_ASSERT_ON_FAIL(st_code >= 200, st_code = 200); /* Check if application rejects this request. */ if (st_code >= 300) { if (st_text.slen == 2) st_text = *pjsip_get_status_text(st_code); pjsip_endpt_respond(pjsua_var.endpt, NULL, rdata, st_code, &st_text, NULL, NULL, NULL); PJSUA_UNLOCK(); return PJ_TRUE; } } /* * Get which account is most likely to be associated with this incoming * call. We need the account to find which contact URI to put for * the call. */ acc_id = call->acc_id = pjsua_acc_find_for_incoming(rdata); call->call_hold_type = pjsua_var.acc[acc_id].cfg.call_hold_type; /* Get call's secure level */ if (PJSIP_URI_SCHEME_IS_SIPS(rdata->msg_info.msg->line.req.uri)) call->secure_level = 2; else if (PJSIP_TRANSPORT_IS_SECURE(rdata->tp_info.transport)) call->secure_level = 1; else call->secure_level = 0; /* Parse SDP from incoming request */ if (rdata->msg_info.msg->body) { pjsip_rdata_sdp_info *sdp_info; sdp_info = pjsip_rdata_get_sdp_info(rdata); offer = sdp_info->sdp; status = sdp_info->sdp_err; if (status==PJ_SUCCESS && sdp_info->sdp==NULL) status = PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_NOT_ACCEPTABLE); if (status != PJ_SUCCESS) { const pj_str_t reason = pj_str("Bad SDP"); pjsip_hdr hdr_list; pjsip_warning_hdr *w; pjsua_perror(THIS_FILE, "Bad SDP in incoming INVITE", status); w = pjsip_warning_hdr_create_from_status(rdata->tp_info.pool, pjsip_endpt_name(pjsua_var.endpt), status); pj_list_init(&hdr_list); pj_list_push_back(&hdr_list, w); pjsip_endpt_respond(pjsua_var.endpt, NULL, rdata, 400, &reason, &hdr_list, NULL, NULL); PJSUA_UNLOCK(); return PJ_TRUE; } /* Do quick checks on SDP before passing it to transports. More elabore * checks will be done in pjsip_inv_verify_request2() below. */ if (offer->media_count==0) { const pj_str_t reason = pj_str("Missing media in SDP"); pjsip_endpt_respond(pjsua_var.endpt, NULL, rdata, 400, &reason, NULL, NULL, NULL); PJSUA_UNLOCK(); return PJ_TRUE; } } else { offer = NULL; } /* Init media channel */ status = pjsua_media_channel_init(call->index, PJSIP_ROLE_UAS, call->secure_level, rdata->tp_info.pool, offer, &sip_err_code); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Error initializing media channel", status); pjsip_endpt_respond(pjsua_var.endpt, NULL, rdata, sip_err_code, NULL, NULL, NULL, NULL); PJSUA_UNLOCK(); return PJ_TRUE; } /* Create answer */ status = pjsua_media_channel_create_sdp(call->index, rdata->tp_info.pool, offer, &answer, &sip_err_code); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Error creating SDP answer", status); pjsip_endpt_respond(pjsua_var.endpt, NULL, rdata, sip_err_code, NULL, NULL, NULL, NULL); PJSUA_UNLOCK(); return PJ_TRUE; } /* Verify that we can handle the request. */ options |= PJSIP_INV_SUPPORT_100REL; options |= PJSIP_INV_SUPPORT_TIMER; if (pjsua_var.acc[acc_id].cfg.require_100rel == PJSUA_100REL_MANDATORY) options |= PJSIP_INV_REQUIRE_100REL; if (pjsua_var.media_cfg.enable_ice) options |= PJSIP_INV_SUPPORT_ICE; if (pjsua_var.acc[acc_id].cfg.use_timer == PJSUA_SIP_TIMER_REQUIRED) options |= PJSIP_INV_REQUIRE_TIMER; else if (pjsua_var.acc[acc_id].cfg.use_timer == PJSUA_SIP_TIMER_ALWAYS) options |= PJSIP_INV_ALWAYS_USE_TIMER; status = pjsip_inv_verify_request2(rdata, &options, offer, answer, NULL, pjsua_var.endpt, &response); if (status != PJ_SUCCESS) { /* * No we can't handle the incoming INVITE request. */ if (response) { pjsip_response_addr res_addr; pjsip_get_response_addr(response->pool, rdata, &res_addr); pjsip_endpt_send_response(pjsua_var.endpt, &res_addr, response, NULL, NULL); } else { /* Respond with 500 (Internal Server Error) */ pjsip_endpt_respond(pjsua_var.endpt, NULL, rdata, 500, NULL, NULL, NULL, NULL); } pjsua_media_channel_deinit(call->index); PJSUA_UNLOCK(); return PJ_TRUE; } /* Get suitable Contact header */ if (pjsua_var.acc[acc_id].contact.slen) { contact = pjsua_var.acc[acc_id].contact; } else { status = pjsua_acc_create_uas_contact(rdata->tp_info.pool, &contact, acc_id, rdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to generate Contact header", status); pjsip_endpt_respond_stateless(pjsua_var.endpt, rdata, 500, NULL, NULL, NULL); pjsua_media_channel_deinit(call->index); PJSUA_UNLOCK(); return PJ_TRUE; } } /* Create dialog: */ status = pjsip_dlg_create_uas( pjsip_ua_instance(), rdata, &contact, &dlg); if (status != PJ_SUCCESS) { pjsip_endpt_respond_stateless(pjsua_var.endpt, rdata, 500, NULL, NULL, NULL); pjsua_media_channel_deinit(call->index); PJSUA_UNLOCK(); return PJ_TRUE; } /* Set credentials */ if (pjsua_var.acc[acc_id].cred_cnt) { pjsip_auth_clt_set_credentials(&dlg->auth_sess, pjsua_var.acc[acc_id].cred_cnt, pjsua_var.acc[acc_id].cred); } /* Set preference */ pjsip_auth_clt_set_prefs(&dlg->auth_sess, &pjsua_var.acc[acc_id].cfg.auth_pref); /* Disable Session Timers if not prefered and the incoming INVITE request * did not require it. */ if (pjsua_var.acc[acc_id].cfg.use_timer == PJSUA_SIP_TIMER_INACTIVE && (options & PJSIP_INV_REQUIRE_TIMER) == 0) { options &= ~(PJSIP_INV_SUPPORT_TIMER); } /* If 100rel is optional and UAC supports it, use it. */ if ((options & PJSIP_INV_REQUIRE_100REL)==0 && pjsua_var.acc[acc_id].cfg.require_100rel == PJSUA_100REL_OPTIONAL) { const pj_str_t token = { "100rel", 6}; pjsip_dialog_cap_status cap_status; cap_status = pjsip_dlg_remote_has_cap(dlg, PJSIP_H_SUPPORTED, NULL, &token); if (cap_status == PJSIP_DIALOG_CAP_SUPPORTED) options |= PJSIP_INV_REQUIRE_100REL; } /* Create invite session: */ status = pjsip_inv_create_uas( dlg, rdata, answer, options, &inv); if (status != PJ_SUCCESS) { pjsip_hdr hdr_list; pjsip_warning_hdr *w; w = pjsip_warning_hdr_create_from_status(dlg->pool, pjsip_endpt_name(pjsua_var.endpt), status); pj_list_init(&hdr_list); pj_list_push_back(&hdr_list, w); pjsip_dlg_respond(dlg, rdata, 500, NULL, &hdr_list, NULL); /* Can't terminate dialog because transaction is in progress. pjsip_dlg_terminate(dlg); */ pjsua_media_channel_deinit(call->index); PJSUA_UNLOCK(); return PJ_TRUE; } /* Init Session Timers */ status = pjsip_timer_init_session(inv, &pjsua_var.acc[acc_id].cfg.timer_setting); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Session Timer init failed", status); pjsip_dlg_respond(dlg, rdata, PJSIP_SC_INTERNAL_SERVER_ERROR, NULL, NULL, NULL); pjsip_inv_terminate(inv, PJSIP_SC_INTERNAL_SERVER_ERROR, PJ_FALSE); pjsua_media_channel_deinit(call->index); PJSUA_UNLOCK(); return PJ_TRUE; } /* Update NAT type of remote endpoint, only when there is SDP in * incoming INVITE! */ if (pjsua_var.ua_cfg.nat_type_in_sdp && pjmedia_sdp_neg_get_state(inv->neg) > PJMEDIA_SDP_NEG_STATE_LOCAL_OFFER) { const pjmedia_sdp_session *remote_sdp; if (pjmedia_sdp_neg_get_neg_remote(inv->neg, &remote_sdp)==PJ_SUCCESS) update_remote_nat_type(call, remote_sdp); } /* If account is locked to specific transport, then lock dialog * to this transport too. */ if (pjsua_var.acc[acc_id].cfg.transport_id != PJSUA_INVALID_ID) { pjsip_tpselector tp_sel; pjsua_init_tpselector(pjsua_var.acc[acc_id].cfg.transport_id, &tp_sel); pjsip_dlg_set_transport(dlg, &tp_sel); } /* Must answer with some response to initial INVITE. We'll do this before * attaching the call to the invite session/dialog, so that the application * will not get notification about this event (on another scenario, it is * also possible that inv_send_msg() fails and causes the invite session to * be disconnected. If we have the call attached at this time, this will * cause the disconnection callback to be called before on_incoming_call() * callback is called, which is not right). */ status = pjsip_inv_initial_answer(inv, rdata, 100, NULL, NULL, &response); if (status != PJ_SUCCESS) { if (response == NULL) { pjsua_perror(THIS_FILE, "Unable to send answer to incoming INVITE", status); pjsip_dlg_respond(dlg, rdata, 500, NULL, NULL, NULL); pjsip_inv_terminate(inv, 500, PJ_FALSE); } else { pjsip_inv_send_msg(inv, response); pjsip_inv_terminate(inv, response->msg->line.status.code, PJ_FALSE); } pjsua_media_channel_deinit(call->index); PJSUA_UNLOCK(); return PJ_TRUE; } else { status = pjsip_inv_send_msg(inv, response); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send 100 response", status); PJSUA_UNLOCK(); return PJ_TRUE; } } /* Create and attach pjsua_var data to the dialog: */ call->inv = inv; dlg->mod_data[pjsua_var.mod.id] = call; inv->mod_data[pjsua_var.mod.id] = call; ++pjsua_var.call_cnt; /* Check if this request should replace existing call */ if (replaced_dlg) { pjsip_inv_session *replaced_inv; struct pjsua_call *replaced_call; pjsip_tx_data *tdata; /* Get the invite session in the dialog */ replaced_inv = pjsip_dlg_get_inv_session(replaced_dlg); /* Get the replaced call instance */ replaced_call = (pjsua_call*) replaced_dlg->mod_data[pjsua_var.mod.id]; /* Notify application */ if (pjsua_var.ua_cfg.cb.on_call_replaced) pjsua_var.ua_cfg.cb.on_call_replaced(replaced_call->index, call_id); PJ_LOG(4,(THIS_FILE, "Answering replacement call %d with 200/OK", call_id)); /* Answer the new call with 200 response */ status = pjsip_inv_answer(inv, 200, NULL, NULL, &tdata); if (status == PJ_SUCCESS) status = pjsip_inv_send_msg(inv, tdata); if (status != PJ_SUCCESS) pjsua_perror(THIS_FILE, "Error answering session", status); /* Note that inv may be invalid if 200/OK has caused error in * starting the media. */ PJ_LOG(4,(THIS_FILE, "Disconnecting replaced call %d", replaced_call->index)); /* Disconnect replaced invite session */ status = pjsip_inv_end_session(replaced_inv, PJSIP_SC_GONE, NULL, &tdata); if (status == PJ_SUCCESS && tdata) status = pjsip_inv_send_msg(replaced_inv, tdata); if (status != PJ_SUCCESS) pjsua_perror(THIS_FILE, "Error terminating session", status); } else { /* Notify application if on_incoming_call() is overriden, * otherwise hangup the call with 480 */ if (pjsua_var.ua_cfg.cb.on_incoming_call) { pjsua_var.ua_cfg.cb.on_incoming_call(acc_id, call_id, rdata); } else { pjsua_call_hangup(call_id, PJSIP_SC_TEMPORARILY_UNAVAILABLE, NULL, NULL); } } /* This INVITE request has been handled. */ PJSUA_UNLOCK(); return PJ_TRUE; } /* * Check if the specified call has active INVITE session and the INVITE * session has not been disconnected. */ PJ_DEF(pj_bool_t) pjsua_call_is_active(pjsua_call_id call_id) { PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); return pjsua_var.calls[call_id].inv != NULL && pjsua_var.calls[call_id].inv->state != PJSIP_INV_STATE_DISCONNECTED; } /* * Check if call has an active media session. */ PJ_DEF(pj_bool_t) pjsua_call_has_media(pjsua_call_id call_id) { PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); return pjsua_var.calls[call_id].session != NULL; } /* * Retrieve the media session associated with this call. */ PJ_DEF(pjmedia_session*) pjsua_call_get_media_session(pjsua_call_id call_id) { PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, NULL); return pjsua_var.calls[call_id].session; } /* * Retrieve the media transport instance that is used for this call. */ PJ_DEF(pjmedia_transport*) pjsua_call_get_media_transport(pjsua_call_id cid) { PJ_ASSERT_RETURN(cid>=0 && cid<(int)pjsua_var.ua_cfg.max_calls, NULL); return pjsua_var.calls[cid].med_tp; } /* Acquire lock to the specified call_id */ pj_status_t acquire_call(const char *title, pjsua_call_id call_id, pjsua_call **p_call, pjsip_dialog **p_dlg) { unsigned retry; pjsua_call *call = NULL; pj_bool_t has_pjsua_lock = PJ_FALSE; pj_status_t status = PJ_SUCCESS; pj_time_val time_start, timeout; pj_gettimeofday(&time_start); timeout.sec = 0; timeout.msec = PJSUA_ACQUIRE_CALL_TIMEOUT; pj_time_val_normalize(&timeout); for (retry=0; ; ++retry) { if (retry % 10 == 9) { pj_time_val dtime; pj_gettimeofday(&dtime); PJ_TIME_VAL_SUB(dtime, time_start); if (!PJ_TIME_VAL_LT(dtime, timeout)) break; } has_pjsua_lock = PJ_FALSE; status = PJSUA_TRY_LOCK(); if (status != PJ_SUCCESS) { pj_thread_sleep(retry/10); continue; } has_pjsua_lock = PJ_TRUE; call = &pjsua_var.calls[call_id]; if (call->inv == NULL) { PJSUA_UNLOCK(); PJ_LOG(3,(THIS_FILE, "Invalid call_id %d in %s", call_id, title)); return PJSIP_ESESSIONTERMINATED; } status = pjsip_dlg_try_inc_lock(call->inv->dlg); if (status != PJ_SUCCESS) { PJSUA_UNLOCK(); pj_thread_sleep(retry/10); continue; } PJSUA_UNLOCK(); break; } if (status != PJ_SUCCESS) { if (has_pjsua_lock == PJ_FALSE) PJ_LOG(1,(THIS_FILE, "Timed-out trying to acquire PJSUA mutex " "(possibly system has deadlocked) in %s", title)); else PJ_LOG(1,(THIS_FILE, "Timed-out trying to acquire dialog mutex " "(possibly system has deadlocked) in %s", title)); return PJ_ETIMEDOUT; } *p_call = call; *p_dlg = call->inv->dlg; return PJ_SUCCESS; } /* * Get the conference port identification associated with the call. */ PJ_DEF(pjsua_conf_port_id) pjsua_call_get_conf_port(pjsua_call_id call_id) { pjsua_call *call; pjsua_conf_port_id port_id = PJSUA_INVALID_ID; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); /* Use PJSUA_LOCK() instead of acquire_call(): * https://trac.pjsip.org/repos/ticket/1371 */ PJSUA_LOCK(); if (!pjsua_call_is_active(call_id)) goto on_return; call = &pjsua_var.calls[call_id]; port_id = call->conf_slot; on_return: PJSUA_UNLOCK(); return port_id; } /* * Obtain detail information about the specified call. */ PJ_DEF(pj_status_t) pjsua_call_get_info( pjsua_call_id call_id, pjsua_call_info *info) { pjsua_call *call; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); pj_bzero(info, sizeof(*info)); /* Use PJSUA_LOCK() instead of acquire_call(): * https://trac.pjsip.org/repos/ticket/1371 */ PJSUA_LOCK(); call = &pjsua_var.calls[call_id]; if (!call->inv) { PJSUA_UNLOCK(); return PJSIP_ESESSIONTERMINATED; } /* id and role */ info->id = call_id; info->role = call->inv->role; info->acc_id = call->acc_id; /* local info */ info->local_info.ptr = info->buf_.local_info; pj_strncpy(&info->local_info, &call->inv->dlg->local.info_str, sizeof(info->buf_.local_info)); /* local contact */ info->local_contact.ptr = info->buf_.local_contact; info->local_contact.slen = pjsip_uri_print(PJSIP_URI_IN_CONTACT_HDR, call->inv->dlg->local.contact->uri, info->local_contact.ptr, sizeof(info->buf_.local_contact)); /* remote info */ info->remote_info.ptr = info->buf_.remote_info; pj_strncpy(&info->remote_info, &call->inv->dlg->remote.info_str, sizeof(info->buf_.remote_info)); /* remote contact */ if (call->inv->dlg->remote.contact) { int len; info->remote_contact.ptr = info->buf_.remote_contact; len = pjsip_uri_print(PJSIP_URI_IN_CONTACT_HDR, call->inv->dlg->remote.contact->uri, info->remote_contact.ptr, sizeof(info->buf_.remote_contact)); if (len < 0) len = 0; info->remote_contact.slen = len; } else { info->remote_contact.slen = 0; } /* call id */ info->call_id.ptr = info->buf_.call_id; pj_strncpy(&info->call_id, &call->inv->dlg->call_id->id, sizeof(info->buf_.call_id)); /* state, state_text */ info->state = call->inv->state; info->state_text = pj_str((char*)pjsip_inv_state_name(info->state)); /* If call is disconnected, set the last_status from the cause code */ if (call->inv->state >= PJSIP_INV_STATE_DISCONNECTED) { /* last_status, last_status_text */ info->last_status = call->inv->cause; info->last_status_text.ptr = info->buf_.last_status_text; pj_strncpy(&info->last_status_text, &call->inv->cause_text, sizeof(info->buf_.last_status_text)); } else { /* last_status, last_status_text */ info->last_status = call->last_code; info->last_status_text.ptr = info->buf_.last_status_text; pj_strncpy(&info->last_status_text, &call->last_text, sizeof(info->buf_.last_status_text)); } /* media status and dir */ info->media_status = call->media_st; info->media_dir = call->media_dir; /* conference slot number */ info->conf_slot = call->conf_slot; /* calculate duration */ if (info->state >= PJSIP_INV_STATE_DISCONNECTED) { info->total_duration = call->dis_time; PJ_TIME_VAL_SUB(info->total_duration, call->start_time); if (call->conn_time.sec) { info->connect_duration = call->dis_time; PJ_TIME_VAL_SUB(info->connect_duration, call->conn_time); } } else if (info->state == PJSIP_INV_STATE_CONFIRMED) { pj_gettimeofday(&info->total_duration); PJ_TIME_VAL_SUB(info->total_duration, call->start_time); pj_gettimeofday(&info->connect_duration); PJ_TIME_VAL_SUB(info->connect_duration, call->conn_time); } else { pj_gettimeofday(&info->total_duration); PJ_TIME_VAL_SUB(info->total_duration, call->start_time); } PJSUA_UNLOCK(); return PJ_SUCCESS; } /* * Check if call remote peer support the specified capability. */ PJ_DEF(pjsip_dialog_cap_status) pjsua_call_remote_has_cap( pjsua_call_id call_id, int htype, const pj_str_t *hname, const pj_str_t *token) { pjsua_call *call; pjsip_dialog *dlg; pj_status_t status; pjsip_dialog_cap_status cap_status; status = acquire_call("pjsua_call_peer_has_cap()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return PJSIP_DIALOG_CAP_UNKNOWN; cap_status = pjsip_dlg_remote_has_cap(dlg, htype, hname, token); pjsip_dlg_dec_lock(dlg); return cap_status; } /* * Attach application specific data to the call. */ PJ_DEF(pj_status_t) pjsua_call_set_user_data( pjsua_call_id call_id, void *user_data) { PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); pjsua_var.calls[call_id].user_data = user_data; return PJ_SUCCESS; } /* * Get user data attached to the call. */ PJ_DEF(void*) pjsua_call_get_user_data(pjsua_call_id call_id) { PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, NULL); return pjsua_var.calls[call_id].user_data; } /* * Get remote's NAT type. */ PJ_DEF(pj_status_t) pjsua_call_get_rem_nat_type(pjsua_call_id call_id, pj_stun_nat_type *p_type) { PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); PJ_ASSERT_RETURN(p_type != NULL, PJ_EINVAL); *p_type = pjsua_var.calls[call_id].rem_nat_type; return PJ_SUCCESS; } /* * Send response to incoming INVITE request. */ PJ_DEF(pj_status_t) pjsua_call_answer( pjsua_call_id call_id, unsigned code, const pj_str_t *reason, const pjsua_msg_data *msg_data) { pjsua_call *call; pjsip_dialog *dlg; pjsip_tx_data *tdata; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_answer()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; if (call->res_time.sec == 0) pj_gettimeofday(&call->res_time); if (reason && reason->slen == 0) reason = NULL; /* Create response message */ status = pjsip_inv_answer(call->inv, code, reason, NULL, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Error creating response", status); pjsip_dlg_dec_lock(dlg); return status; } /* Call might have been disconnected if application is answering with * 200/OK and the media failed to start. */ if (call->inv == NULL) { pjsip_dlg_dec_lock(dlg); return PJSIP_ESESSIONTERMINATED; } /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Send the message */ status = pjsip_inv_send_msg(call->inv, tdata); if (status != PJ_SUCCESS) pjsua_perror(THIS_FILE, "Error sending response", status); pjsip_dlg_dec_lock(dlg); return status; } /* * Hangup call by using method that is appropriate according to the * call state. */ PJ_DEF(pj_status_t) pjsua_call_hangup(pjsua_call_id call_id, unsigned code, const pj_str_t *reason, const pjsua_msg_data *msg_data) { pjsua_call *call; pjsip_dialog *dlg; pj_status_t status; pjsip_tx_data *tdata; if (call_id<0 || call_id>=(int)pjsua_var.ua_cfg.max_calls) { PJ_LOG(1,(THIS_FILE, "pjsua_call_hangup(): invalid call id %d", call_id)); } PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_hangup()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; if (code==0) { if (call->inv->state == PJSIP_INV_STATE_CONFIRMED) code = PJSIP_SC_OK; else if (call->inv->role == PJSIP_ROLE_UAS) code = PJSIP_SC_DECLINE; else code = PJSIP_SC_REQUEST_TERMINATED; } status = pjsip_inv_end_session(call->inv, code, reason, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Failed to create end session message", status); pjsip_dlg_dec_lock(dlg); return status; } /* pjsip_inv_end_session may return PJ_SUCCESS with NULL * as p_tdata when INVITE transaction has not been answered * with any provisional responses. */ if (tdata == NULL) { pjsip_dlg_dec_lock(dlg); return PJ_SUCCESS; } /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Send the message */ status = pjsip_inv_send_msg(call->inv, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Failed to send end session message", status); pjsip_dlg_dec_lock(dlg); return status; } /* Stop lock codec timer, if it is active */ if (call->lock_codec.reinv_timer.id) { pjsip_endpt_cancel_timer(pjsua_var.endpt, &call->lock_codec.reinv_timer); call->lock_codec.reinv_timer.id = PJ_FALSE; } pjsip_dlg_dec_lock(dlg); return PJ_SUCCESS; } /* * Accept or reject redirection. */ PJ_DEF(pj_status_t) pjsua_call_process_redirect( pjsua_call_id call_id, pjsip_redirect_op cmd) { pjsua_call *call; pjsip_dialog *dlg; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_process_redirect()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; status = pjsip_inv_process_redirect(call->inv, cmd, NULL); pjsip_dlg_dec_lock(dlg); return status; } /* * Put the specified call on hold. */ PJ_DEF(pj_status_t) pjsua_call_set_hold(pjsua_call_id call_id, const pjsua_msg_data *msg_data) { pjmedia_sdp_session *sdp; pjsua_call *call; pjsip_dialog *dlg; pjsip_tx_data *tdata; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_set_hold()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; if (call->inv->state != PJSIP_INV_STATE_CONFIRMED) { PJ_LOG(3,(THIS_FILE, "Can not hold call that is not confirmed")); pjsip_dlg_dec_lock(dlg); return PJSIP_ESESSIONSTATE; } status = create_sdp_of_call_hold(call, &sdp); if (status != PJ_SUCCESS) { pjsip_dlg_dec_lock(dlg); return status; } /* Create re-INVITE with new offer */ status = pjsip_inv_reinvite( call->inv, NULL, sdp, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create re-INVITE", status); pjsip_dlg_dec_lock(dlg); return status; } /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Record the tx_data to keep track the operation */ call->hold_msg = (void*) tdata; /* Send the request */ status = pjsip_inv_send_msg( call->inv, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send re-INVITE", status); call->hold_msg = NULL; pjsip_dlg_dec_lock(dlg); return status; } /* Set flag that local put the call on hold */ call->local_hold = PJ_TRUE; pjsip_dlg_dec_lock(dlg); return PJ_SUCCESS; } /* * Send re-INVITE (to release hold). */ PJ_DEF(pj_status_t) pjsua_call_reinvite( pjsua_call_id call_id, unsigned options, const pjsua_msg_data *msg_data) { pjmedia_sdp_session *sdp; pj_str_t *new_contact = NULL; pjsip_tx_data *tdata; pjsua_call *call; pjsip_dialog *dlg; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_reinvite()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; if (call->inv->state != PJSIP_INV_STATE_CONFIRMED) { PJ_LOG(3,(THIS_FILE, "Can not re-INVITE call that is not confirmed")); pjsip_dlg_dec_lock(dlg); return PJSIP_ESESSIONSTATE; } /* Create SDP */ if (call->local_hold && (options & PJSUA_CALL_UNHOLD)==0) { status = create_sdp_of_call_hold(call, &sdp); } else { status = pjsua_media_channel_create_sdp(call->index, call->inv->pool_prov, NULL, &sdp, NULL); call->local_hold = PJ_FALSE; } if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to get SDP from media endpoint", status); pjsip_dlg_dec_lock(dlg); return status; } if ((options & PJSUA_CALL_UPDATE_CONTACT) && pjsua_acc_is_valid(call->acc_id)) { new_contact = &pjsua_var.acc[call->acc_id].contact; } /* Create re-INVITE with new offer */ status = pjsip_inv_reinvite( call->inv, new_contact, sdp, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create re-INVITE", status); pjsip_dlg_dec_lock(dlg); return status; } /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Send the request */ status = pjsip_inv_send_msg( call->inv, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send re-INVITE", status); pjsip_dlg_dec_lock(dlg); return status; } pjsip_dlg_dec_lock(dlg); return PJ_SUCCESS; } /* * Send UPDATE request. */ PJ_DEF(pj_status_t) pjsua_call_update( pjsua_call_id call_id, unsigned options, const pjsua_msg_data *msg_data) { pjmedia_sdp_session *sdp; pj_str_t *new_contact = NULL; pjsip_tx_data *tdata; pjsua_call *call; pjsip_dialog *dlg; pj_status_t status; PJ_UNUSED_ARG(options); PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_update()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; /* Create SDP */ status = pjsua_media_channel_create_sdp(call->index, call->inv->pool_prov, NULL, &sdp, NULL); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to get SDP from media endpoint", status); pjsip_dlg_dec_lock(dlg); return status; } if ((options & PJSUA_CALL_UPDATE_CONTACT) && pjsua_acc_is_valid(call->acc_id)) { new_contact = &pjsua_var.acc[call->acc_id].contact; } /* Create UPDATE with new offer */ status = pjsip_inv_update(call->inv, new_contact, sdp, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create UPDATE request", status); pjsip_dlg_dec_lock(dlg); return status; } /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Send the request */ status = pjsip_inv_send_msg( call->inv, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send UPDATE request", status); pjsip_dlg_dec_lock(dlg); return status; } call->local_hold = PJ_FALSE; pjsip_dlg_dec_lock(dlg); return PJ_SUCCESS; } /* * Initiate call transfer to the specified address. */ PJ_DEF(pj_status_t) pjsua_call_xfer( pjsua_call_id call_id, const pj_str_t *dest, const pjsua_msg_data *msg_data) { pjsip_evsub *sub; pjsip_tx_data *tdata; pjsua_call *call; pjsip_dialog *dlg; pjsip_generic_string_hdr *gs_hdr; const pj_str_t str_ref_by = { "Referred-By", 11 }; struct pjsip_evsub_user xfer_cb; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_xfer()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; /* Create xfer client subscription. */ pj_bzero(&xfer_cb, sizeof(xfer_cb)); xfer_cb.on_evsub_state = &xfer_client_on_evsub_state; status = pjsip_xfer_create_uac(call->inv->dlg, &xfer_cb, &sub); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create xfer", status); pjsip_dlg_dec_lock(dlg); return status; } /* Associate this call with the client subscription */ pjsip_evsub_set_mod_data(sub, pjsua_var.mod.id, call); /* * Create REFER request. */ status = pjsip_xfer_initiate(sub, dest, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create REFER request", status); pjsip_dlg_dec_lock(dlg); return status; } /* Add Referred-By header */ gs_hdr = pjsip_generic_string_hdr_create(tdata->pool, &str_ref_by, &dlg->local.info_str); pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*)gs_hdr); /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Send. */ status = pjsip_xfer_send_request(sub, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send REFER request", status); pjsip_dlg_dec_lock(dlg); return status; } /* For simplicity (that's what this program is intended to be!), * leave the original invite session as it is. More advanced application * may want to hold the INVITE, or terminate the invite, or whatever. */ pjsip_dlg_dec_lock(dlg); return PJ_SUCCESS; } /* * Initiate attended call transfer to the specified address. */ PJ_DEF(pj_status_t) pjsua_call_xfer_replaces( pjsua_call_id call_id, pjsua_call_id dest_call_id, unsigned options, const pjsua_msg_data *msg_data) { pjsua_call *dest_call; pjsip_dialog *dest_dlg; char str_dest_buf[PJSIP_MAX_URL_SIZE*2]; pj_str_t str_dest; int len; pjsip_uri *uri; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); PJ_ASSERT_RETURN(dest_call_id>=0 && dest_call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_xfer_replaces()", dest_call_id, &dest_call, &dest_dlg); if (status != PJ_SUCCESS) return status; /* * Create REFER destination URI with Replaces field. */ /* Make sure we have sufficient buffer's length */ PJ_ASSERT_RETURN( dest_dlg->remote.info_str.slen + dest_dlg->call_id->id.slen + dest_dlg->remote.info->tag.slen + dest_dlg->local.info->tag.slen + 32 < (long)sizeof(str_dest_buf), PJSIP_EURITOOLONG); /* Print URI */ str_dest_buf[0] = '<'; str_dest.slen = 1; uri = (pjsip_uri*) pjsip_uri_get_uri(dest_dlg->remote.info->uri); len = pjsip_uri_print(PJSIP_URI_IN_REQ_URI, uri, str_dest_buf+1, sizeof(str_dest_buf)-1); if (len < 0) return PJSIP_EURITOOLONG; str_dest.slen += len; /* Build the URI */ len = pj_ansi_snprintf(str_dest_buf + str_dest.slen, sizeof(str_dest_buf) - str_dest.slen, "?%s" "Replaces=%.*s" "%%3Bto-tag%%3D%.*s" "%%3Bfrom-tag%%3D%.*s>", ((options&PJSUA_XFER_NO_REQUIRE_REPLACES) ? "" : "Require=replaces&"), (int)dest_dlg->call_id->id.slen, dest_dlg->call_id->id.ptr, (int)dest_dlg->remote.info->tag.slen, dest_dlg->remote.info->tag.ptr, (int)dest_dlg->local.info->tag.slen, dest_dlg->local.info->tag.ptr); PJ_ASSERT_RETURN(len > 0 && len <= (int)sizeof(str_dest_buf)-str_dest.slen, PJSIP_EURITOOLONG); str_dest.ptr = str_dest_buf; str_dest.slen += len; pjsip_dlg_dec_lock(dest_dlg); return pjsua_call_xfer(call_id, &str_dest, msg_data); } /* * Send DTMF digits to remote using RFC 2833 payload formats. */ PJ_DEF(pj_status_t) pjsua_call_dial_dtmf( pjsua_call_id call_id, const pj_str_t *digits) { pjsua_call *call; pjsip_dialog *dlg; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_dial_dtmf()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; if (!call->session) { PJ_LOG(3,(THIS_FILE, "Media is not established yet!")); pjsip_dlg_dec_lock(dlg); return PJ_EINVALIDOP; } status = pjmedia_session_dial_dtmf( call->session, 0, digits); pjsip_dlg_dec_lock(dlg); return status; } /** * Send instant messaging inside INVITE session. */ PJ_DEF(pj_status_t) pjsua_call_send_im( pjsua_call_id call_id, const pj_str_t *mime_type, const pj_str_t *content, const pjsua_msg_data *msg_data, void *user_data) { pjsua_call *call; pjsip_dialog *dlg; const pj_str_t mime_text_plain = pj_str("text/plain"); pjsip_media_type ctype; pjsua_im_data *im_data; pjsip_tx_data *tdata; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_send_im()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; /* Set default media type if none is specified */ if (mime_type == NULL) { mime_type = &mime_text_plain; } /* Create request message. */ status = pjsip_dlg_create_request( call->inv->dlg, &pjsip_message_method, -1, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create MESSAGE request", status); goto on_return; } /* Add accept header. */ pjsip_msg_add_hdr( tdata->msg, (pjsip_hdr*)pjsua_im_create_accept(tdata->pool)); /* Parse MIME type */ pjsua_parse_media_type(tdata->pool, mime_type, &ctype); /* Create "text/plain" message body. */ tdata->msg->body = pjsip_msg_body_create( tdata->pool, &ctype.type, &ctype.subtype, content); if (tdata->msg->body == NULL) { pjsua_perror(THIS_FILE, "Unable to create msg body", PJ_ENOMEM); pjsip_tx_data_dec_ref(tdata); goto on_return; } /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Create IM data and attach to the request. */ im_data = PJ_POOL_ZALLOC_T(tdata->pool, pjsua_im_data); im_data->acc_id = call->acc_id; im_data->call_id = call_id; im_data->to = call->inv->dlg->remote.info_str; pj_strdup_with_null(tdata->pool, &im_data->body, content); im_data->user_data = user_data; /* Send the request. */ status = pjsip_dlg_send_request( call->inv->dlg, tdata, pjsua_var.mod.id, im_data); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send MESSAGE request", status); goto on_return; } on_return: pjsip_dlg_dec_lock(dlg); return status; } /* * Send IM typing indication inside INVITE session. */ PJ_DEF(pj_status_t) pjsua_call_send_typing_ind( pjsua_call_id call_id, pj_bool_t is_typing, const pjsua_msg_data*msg_data) { pjsua_call *call; pjsip_dialog *dlg; pjsip_tx_data *tdata; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_send_typing_ind", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; /* Create request message. */ status = pjsip_dlg_create_request( call->inv->dlg, &pjsip_message_method, -1, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create MESSAGE request", status); goto on_return; } /* Create "application/im-iscomposing+xml" msg body. */ tdata->msg->body = pjsip_iscomposing_create_body(tdata->pool, is_typing, NULL, NULL, -1); /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Send the request. */ status = pjsip_dlg_send_request( call->inv->dlg, tdata, -1, NULL); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send MESSAGE request", status); goto on_return; } on_return: pjsip_dlg_dec_lock(dlg); return status; } /* * Send arbitrary request. */ PJ_DEF(pj_status_t) pjsua_call_send_request(pjsua_call_id call_id, const pj_str_t *method_str, const pjsua_msg_data *msg_data) { pjsua_call *call; pjsip_dialog *dlg; pjsip_method method; pjsip_tx_data *tdata; pj_status_t status; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_send_request", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; /* Init method */ pjsip_method_init_np(&method, (pj_str_t*)method_str); /* Create request message. */ status = pjsip_dlg_create_request( call->inv->dlg, &method, -1, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create request", status); goto on_return; } /* Add additional headers etc */ pjsua_process_msg_data( tdata, msg_data); /* Send the request. */ status = pjsip_dlg_send_request( call->inv->dlg, tdata, -1, NULL); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send request", status); goto on_return; } on_return: pjsip_dlg_dec_lock(dlg); return status; } /* * Terminate all calls. */ PJ_DEF(void) pjsua_call_hangup_all(void) { unsigned i; // This may deadlock, see https://trac.pjsip.org/repos/ticket/1305 //PJSUA_LOCK(); for (i=0; isession; pjmedia_transport_info tp_info; pjmedia_transport_info_init(&tp_info); pjmedia_transport_get_info(call->med_tp, &tp_info); pjmedia_session_get_info(session, &info); for (i=0; imedia_dir == PJMEDIA_DIR_NONE) { /* To handle when the stream that is currently being paused * (http://trac.pjsip.org/repos/ticket/1079) */ dir = "inactive"; } else if (info.stream_info[i].dir == PJMEDIA_DIR_ENCODING) dir = "sendonly"; else if (info.stream_info[i].dir == PJMEDIA_DIR_DECODING) dir = "recvonly"; else if (info.stream_info[i].dir == PJMEDIA_DIR_ENCODING_DECODING) dir = "sendrecv"; else dir = "inactive"; len = pj_ansi_snprintf(buf, end-p, "%s #%d %.*s @%dKHz, %s, peer=%s", indent, i, (int)info.stream_info[i].fmt.encoding_name.slen, info.stream_info[i].fmt.encoding_name.ptr, info.stream_info[i].fmt.clock_rate / 1000, dir, rem_addr); if (len < 1 || len > end-p) { *p = '\0'; return; } p += len; *p++ = '\n'; *p = '\0'; if (stat.rx.update_cnt == 0) strcpy(last_update, "never"); else { pj_gettimeofday(&now); PJ_TIME_VAL_SUB(now, stat.rx.update); sprintf(last_update, "%02ldh:%02ldm:%02ld.%03lds ago", now.sec / 3600, (now.sec % 3600) / 60, now.sec % 60, now.msec); } pj_gettimeofday(&media_duration); PJ_TIME_VAL_SUB(media_duration, stat.start); if (PJ_TIME_VAL_MSEC(media_duration) == 0) media_duration.msec = 1; /* protect against division by zero */ if (stat.rx.pkt == 0) stat.rx.pkt = 1; if (stat.tx.pkt == 0) stat.tx.pkt = 1; len = pj_ansi_snprintf(p, end-p, "%s RX pt=%d, stat last update: %s\n" "%s total %spkt %sB (%sB +IP hdr) @avg=%sbps/%sbps\n" "%s pkt loss=%d (%3.1f%%), discrd=%d (%3.1f%%), dup=%d (%2.1f%%), reord=%d (%3.1f%%)\n" "%s (msec) min avg max last dev\n" "%s loss period: %7.3f %7.3f %7.3f %7.3f %7.3f\n" "%s jitter : %7.3f %7.3f %7.3f %7.3f %7.3f" #if defined(PJMEDIA_RTCP_STAT_HAS_RAW_JITTER) && PJMEDIA_RTCP_STAT_HAS_RAW_JITTER!=0 "\n" "%s raw jitter : %7.3f %7.3f %7.3f %7.3f %7.3f" #endif #if defined(PJMEDIA_RTCP_STAT_HAS_IPDV) && PJMEDIA_RTCP_STAT_HAS_IPDV!=0 "\n" "%s IPDV : %7.3f %7.3f %7.3f %7.3f %7.3f" #endif "%s", indent, info.stream_info[i].fmt.pt, last_update, indent, good_number(packets, stat.rx.pkt), good_number(bytes, stat.rx.bytes), good_number(ipbytes, stat.rx.bytes + stat.rx.pkt * 40), good_number(avg_bps, (pj_int32_t)((pj_int64_t)stat.rx.bytes * 8 * 1000 / PJ_TIME_VAL_MSEC(media_duration))), good_number(avg_ipbps, (pj_int32_t)(((pj_int64_t)stat.rx.bytes + stat.rx.pkt * 40) * 8 * 1000 / PJ_TIME_VAL_MSEC(media_duration))), indent, stat.rx.loss, stat.rx.loss * 100.0 / (stat.rx.pkt + stat.rx.loss), stat.rx.discard, stat.rx.discard * 100.0 / (stat.rx.pkt + stat.rx.loss), stat.rx.dup, stat.rx.dup * 100.0 / (stat.rx.pkt + stat.rx.loss), stat.rx.reorder, stat.rx.reorder * 100.0 / (stat.rx.pkt + stat.rx.loss), indent, indent, stat.rx.loss_period.min / 1000.0, stat.rx.loss_period.mean / 1000.0, stat.rx.loss_period.max / 1000.0, stat.rx.loss_period.last / 1000.0, pj_math_stat_get_stddev(&stat.rx.loss_period) / 1000.0, indent, stat.rx.jitter.min / 1000.0, stat.rx.jitter.mean / 1000.0, stat.rx.jitter.max / 1000.0, stat.rx.jitter.last / 1000.0, pj_math_stat_get_stddev(&stat.rx.jitter) / 1000.0, #if defined(PJMEDIA_RTCP_STAT_HAS_RAW_JITTER) && PJMEDIA_RTCP_STAT_HAS_RAW_JITTER!=0 indent, stat.rx_raw_jitter.min / 1000.0, stat.rx_raw_jitter.mean / 1000.0, stat.rx_raw_jitter.max / 1000.0, stat.rx_raw_jitter.last / 1000.0, pj_math_stat_get_stddev(&stat.rx_raw_jitter) / 1000.0, #endif #if defined(PJMEDIA_RTCP_STAT_HAS_IPDV) && PJMEDIA_RTCP_STAT_HAS_IPDV!=0 indent, stat.rx_ipdv.min / 1000.0, stat.rx_ipdv.mean / 1000.0, stat.rx_ipdv.max / 1000.0, stat.rx_ipdv.last / 1000.0, pj_math_stat_get_stddev(&stat.rx_ipdv) / 1000.0, #endif "" ); if (len < 1 || len > end-p) { *p = '\0'; return; } p += len; *p++ = '\n'; *p = '\0'; if (stat.tx.update_cnt == 0) strcpy(last_update, "never"); else { pj_gettimeofday(&now); PJ_TIME_VAL_SUB(now, stat.tx.update); sprintf(last_update, "%02ldh:%02ldm:%02ld.%03lds ago", now.sec / 3600, (now.sec % 3600) / 60, now.sec % 60, now.msec); } len = pj_ansi_snprintf(p, end-p, "%s TX pt=%d, ptime=%dms, stat last update: %s\n" "%s total %spkt %sB (%sB +IP hdr) @avg %sbps/%sbps\n" "%s pkt loss=%d (%3.1f%%), dup=%d (%3.1f%%), reorder=%d (%3.1f%%)\n" "%s (msec) min avg max last dev \n" "%s loss period: %7.3f %7.3f %7.3f %7.3f %7.3f\n" "%s jitter : %7.3f %7.3f %7.3f %7.3f %7.3f%s", indent, info.stream_info[i].tx_pt, info.stream_info[i].param->info.frm_ptime * info.stream_info[i].param->setting.frm_per_pkt, last_update, indent, good_number(packets, stat.tx.pkt), good_number(bytes, stat.tx.bytes), good_number(ipbytes, stat.tx.bytes + stat.tx.pkt * 40), good_number(avg_bps, (pj_int32_t)((pj_int64_t)stat.tx.bytes * 8 * 1000 / PJ_TIME_VAL_MSEC(media_duration))), good_number(avg_ipbps, (pj_int32_t)(((pj_int64_t)stat.tx.bytes + stat.tx.pkt * 40) * 8 * 1000 / PJ_TIME_VAL_MSEC(media_duration))), indent, stat.tx.loss, stat.tx.loss * 100.0 / (stat.tx.pkt + stat.tx.loss), stat.tx.dup, stat.tx.dup * 100.0 / (stat.tx.pkt + stat.tx.loss), stat.tx.reorder, stat.tx.reorder * 100.0 / (stat.tx.pkt + stat.tx.loss), indent, indent, stat.tx.loss_period.min / 1000.0, stat.tx.loss_period.mean / 1000.0, stat.tx.loss_period.max / 1000.0, stat.tx.loss_period.last / 1000.0, pj_math_stat_get_stddev(&stat.tx.loss_period) / 1000.0, indent, stat.tx.jitter.min / 1000.0, stat.tx.jitter.mean / 1000.0, stat.tx.jitter.max / 1000.0, stat.tx.jitter.last / 1000.0, pj_math_stat_get_stddev(&stat.tx.jitter) / 1000.0, "" ); if (len < 1 || len > end-p) { *p = '\0'; return; } p += len; *p++ = '\n'; *p = '\0'; len = pj_ansi_snprintf(p, end-p, "%s RTT msec : %7.3f %7.3f %7.3f %7.3f %7.3f", indent, stat.rtt.min / 1000.0, stat.rtt.mean / 1000.0, stat.rtt.max / 1000.0, stat.rtt.last / 1000.0, pj_math_stat_get_stddev(&stat.rtt) / 1000.0 ); if (len < 1 || len > end-p) { *p = '\0'; return; } p += len; *p++ = '\n'; *p = '\0'; #if defined(PJMEDIA_HAS_RTCP_XR) && (PJMEDIA_HAS_RTCP_XR != 0) # define SAMPLES_TO_USEC(usec, samples, clock_rate) \ do { \ if (samples <= 4294) \ usec = samples * 1000000 / clock_rate; \ else { \ usec = samples * 1000 / clock_rate; \ usec *= 1000; \ } \ } while(0) # define PRINT_VOIP_MTC_VAL(s, v) \ if (v == 127) \ sprintf(s, "(na)"); \ else \ sprintf(s, "%d", v) # define VALIDATE_PRINT_BUF() \ if (len < 1 || len > end-p) { *p = '\0'; return; } \ p += len; *p++ = '\n'; *p = '\0' do { char loss[16], dup[16]; char jitter[80]; char toh[80]; char plc[16], jba[16], jbr[16]; char signal_lvl[16], noise_lvl[16], rerl[16]; char r_factor[16], ext_r_factor[16], mos_lq[16], mos_cq[16]; pjmedia_rtcp_xr_stat xr_stat; unsigned clock_rate; if (pjmedia_session_get_stream_stat_xr(session, i, &xr_stat) != PJ_SUCCESS) { break; } clock_rate = info.stream_info[i].fmt.clock_rate; len = pj_ansi_snprintf(p, end-p, "\n%s Extended reports:", indent); VALIDATE_PRINT_BUF(); /* Statistics Summary */ len = pj_ansi_snprintf(p, end-p, "%s Statistics Summary", indent); VALIDATE_PRINT_BUF(); if (xr_stat.rx.stat_sum.l) sprintf(loss, "%d", xr_stat.rx.stat_sum.lost); else sprintf(loss, "(na)"); if (xr_stat.rx.stat_sum.d) sprintf(dup, "%d", xr_stat.rx.stat_sum.dup); else sprintf(dup, "(na)"); if (xr_stat.rx.stat_sum.j) { unsigned jmin, jmax, jmean, jdev; SAMPLES_TO_USEC(jmin, xr_stat.rx.stat_sum.jitter.min, clock_rate); SAMPLES_TO_USEC(jmax, xr_stat.rx.stat_sum.jitter.max, clock_rate); SAMPLES_TO_USEC(jmean, xr_stat.rx.stat_sum.jitter.mean, clock_rate); SAMPLES_TO_USEC(jdev, pj_math_stat_get_stddev(&xr_stat.rx.stat_sum.jitter), clock_rate); sprintf(jitter, "%7.3f %7.3f %7.3f %7.3f", jmin/1000.0, jmean/1000.0, jmax/1000.0, jdev/1000.0); } else sprintf(jitter, "(report not available)"); if (xr_stat.rx.stat_sum.t) { sprintf(toh, "%11d %11d %11d %11d", xr_stat.rx.stat_sum.toh.min, xr_stat.rx.stat_sum.toh.mean, xr_stat.rx.stat_sum.toh.max, pj_math_stat_get_stddev(&xr_stat.rx.stat_sum.toh)); } else sprintf(toh, "(report not available)"); if (xr_stat.rx.stat_sum.update.sec == 0) strcpy(last_update, "never"); else { pj_gettimeofday(&now); PJ_TIME_VAL_SUB(now, xr_stat.rx.stat_sum.update); sprintf(last_update, "%02ldh:%02ldm:%02ld.%03lds ago", now.sec / 3600, (now.sec % 3600) / 60, now.sec % 60, now.msec); } len = pj_ansi_snprintf(p, end-p, "%s RX last update: %s\n" "%s begin seq=%d, end seq=%d\n" "%s pkt loss=%s, dup=%s\n" "%s (msec) min avg max dev\n" "%s jitter : %s\n" "%s toh : %s", indent, last_update, indent, xr_stat.rx.stat_sum.begin_seq, xr_stat.rx.stat_sum.end_seq, indent, loss, dup, indent, indent, jitter, indent, toh ); VALIDATE_PRINT_BUF(); if (xr_stat.tx.stat_sum.l) sprintf(loss, "%d", xr_stat.tx.stat_sum.lost); else sprintf(loss, "(na)"); if (xr_stat.tx.stat_sum.d) sprintf(dup, "%d", xr_stat.tx.stat_sum.dup); else sprintf(dup, "(na)"); if (xr_stat.tx.stat_sum.j) { unsigned jmin, jmax, jmean, jdev; SAMPLES_TO_USEC(jmin, xr_stat.tx.stat_sum.jitter.min, clock_rate); SAMPLES_TO_USEC(jmax, xr_stat.tx.stat_sum.jitter.max, clock_rate); SAMPLES_TO_USEC(jmean, xr_stat.tx.stat_sum.jitter.mean, clock_rate); SAMPLES_TO_USEC(jdev, pj_math_stat_get_stddev(&xr_stat.tx.stat_sum.jitter), clock_rate); sprintf(jitter, "%7.3f %7.3f %7.3f %7.3f", jmin/1000.0, jmean/1000.0, jmax/1000.0, jdev/1000.0); } else sprintf(jitter, "(report not available)"); if (xr_stat.tx.stat_sum.t) { sprintf(toh, "%11d %11d %11d %11d", xr_stat.tx.stat_sum.toh.min, xr_stat.tx.stat_sum.toh.mean, xr_stat.tx.stat_sum.toh.max, pj_math_stat_get_stddev(&xr_stat.rx.stat_sum.toh)); } else sprintf(toh, "(report not available)"); if (xr_stat.tx.stat_sum.update.sec == 0) strcpy(last_update, "never"); else { pj_gettimeofday(&now); PJ_TIME_VAL_SUB(now, xr_stat.tx.stat_sum.update); sprintf(last_update, "%02ldh:%02ldm:%02ld.%03lds ago", now.sec / 3600, (now.sec % 3600) / 60, now.sec % 60, now.msec); } len = pj_ansi_snprintf(p, end-p, "%s TX last update: %s\n" "%s begin seq=%d, end seq=%d\n" "%s pkt loss=%s, dup=%s\n" "%s (msec) min avg max dev\n" "%s jitter : %s\n" "%s toh : %s", indent, last_update, indent, xr_stat.tx.stat_sum.begin_seq, xr_stat.tx.stat_sum.end_seq, indent, loss, dup, indent, indent, jitter, indent, toh ); VALIDATE_PRINT_BUF(); /* VoIP Metrics */ len = pj_ansi_snprintf(p, end-p, "%s VoIP Metrics", indent); VALIDATE_PRINT_BUF(); PRINT_VOIP_MTC_VAL(signal_lvl, xr_stat.rx.voip_mtc.signal_lvl); PRINT_VOIP_MTC_VAL(noise_lvl, xr_stat.rx.voip_mtc.noise_lvl); PRINT_VOIP_MTC_VAL(rerl, xr_stat.rx.voip_mtc.rerl); PRINT_VOIP_MTC_VAL(r_factor, xr_stat.rx.voip_mtc.r_factor); PRINT_VOIP_MTC_VAL(ext_r_factor, xr_stat.rx.voip_mtc.ext_r_factor); PRINT_VOIP_MTC_VAL(mos_lq, xr_stat.rx.voip_mtc.mos_lq); PRINT_VOIP_MTC_VAL(mos_cq, xr_stat.rx.voip_mtc.mos_cq); switch ((xr_stat.rx.voip_mtc.rx_config>>6) & 3) { case PJMEDIA_RTCP_XR_PLC_DIS: sprintf(plc, "DISABLED"); break; case PJMEDIA_RTCP_XR_PLC_ENH: sprintf(plc, "ENHANCED"); break; case PJMEDIA_RTCP_XR_PLC_STD: sprintf(plc, "STANDARD"); break; case PJMEDIA_RTCP_XR_PLC_UNK: default: sprintf(plc, "UNKNOWN"); break; } switch ((xr_stat.rx.voip_mtc.rx_config>>4) & 3) { case PJMEDIA_RTCP_XR_JB_FIXED: sprintf(jba, "FIXED"); break; case PJMEDIA_RTCP_XR_JB_ADAPTIVE: sprintf(jba, "ADAPTIVE"); break; default: sprintf(jba, "UNKNOWN"); break; } sprintf(jbr, "%d", xr_stat.rx.voip_mtc.rx_config & 0x0F); if (xr_stat.rx.voip_mtc.update.sec == 0) strcpy(last_update, "never"); else { pj_gettimeofday(&now); PJ_TIME_VAL_SUB(now, xr_stat.rx.voip_mtc.update); sprintf(last_update, "%02ldh:%02ldm:%02ld.%03lds ago", now.sec / 3600, (now.sec % 3600) / 60, now.sec % 60, now.msec); } len = pj_ansi_snprintf(p, end-p, "%s RX last update: %s\n" "%s packets : loss rate=%d (%.2f%%), discard rate=%d (%.2f%%)\n" "%s burst : density=%d (%.2f%%), duration=%d%s\n" "%s gap : density=%d (%.2f%%), duration=%d%s\n" "%s delay : round trip=%d%s, end system=%d%s\n" "%s level : signal=%s%s, noise=%s%s, RERL=%s%s\n" "%s quality : R factor=%s, ext R factor=%s\n" "%s MOS LQ=%s, MOS CQ=%s\n" "%s config : PLC=%s, JB=%s, JB rate=%s, Gmin=%d\n" "%s JB delay : cur=%d%s, max=%d%s, abs max=%d%s", indent, last_update, /* packets */ indent, xr_stat.rx.voip_mtc.loss_rate, xr_stat.rx.voip_mtc.loss_rate*100.0/256, xr_stat.rx.voip_mtc.discard_rate, xr_stat.rx.voip_mtc.discard_rate*100.0/256, /* burst */ indent, xr_stat.rx.voip_mtc.burst_den, xr_stat.rx.voip_mtc.burst_den*100.0/256, xr_stat.rx.voip_mtc.burst_dur, "ms", /* gap */ indent, xr_stat.rx.voip_mtc.gap_den, xr_stat.rx.voip_mtc.gap_den*100.0/256, xr_stat.rx.voip_mtc.gap_dur, "ms", /* delay */ indent, xr_stat.rx.voip_mtc.rnd_trip_delay, "ms", xr_stat.rx.voip_mtc.end_sys_delay, "ms", /* level */ indent, signal_lvl, "dB", noise_lvl, "dB", rerl, "", /* quality */ indent, r_factor, ext_r_factor, indent, mos_lq, mos_cq, /* config */ indent, plc, jba, jbr, xr_stat.rx.voip_mtc.gmin, /* JB delay */ indent, xr_stat.rx.voip_mtc.jb_nom, "ms", xr_stat.rx.voip_mtc.jb_max, "ms", xr_stat.rx.voip_mtc.jb_abs_max, "ms" ); VALIDATE_PRINT_BUF(); PRINT_VOIP_MTC_VAL(signal_lvl, xr_stat.tx.voip_mtc.signal_lvl); PRINT_VOIP_MTC_VAL(noise_lvl, xr_stat.tx.voip_mtc.noise_lvl); PRINT_VOIP_MTC_VAL(rerl, xr_stat.tx.voip_mtc.rerl); PRINT_VOIP_MTC_VAL(r_factor, xr_stat.tx.voip_mtc.r_factor); PRINT_VOIP_MTC_VAL(ext_r_factor, xr_stat.tx.voip_mtc.ext_r_factor); PRINT_VOIP_MTC_VAL(mos_lq, xr_stat.tx.voip_mtc.mos_lq); PRINT_VOIP_MTC_VAL(mos_cq, xr_stat.tx.voip_mtc.mos_cq); switch ((xr_stat.tx.voip_mtc.rx_config>>6) & 3) { case PJMEDIA_RTCP_XR_PLC_DIS: sprintf(plc, "DISABLED"); break; case PJMEDIA_RTCP_XR_PLC_ENH: sprintf(plc, "ENHANCED"); break; case PJMEDIA_RTCP_XR_PLC_STD: sprintf(plc, "STANDARD"); break; case PJMEDIA_RTCP_XR_PLC_UNK: default: sprintf(plc, "unknown"); break; } switch ((xr_stat.tx.voip_mtc.rx_config>>4) & 3) { case PJMEDIA_RTCP_XR_JB_FIXED: sprintf(jba, "FIXED"); break; case PJMEDIA_RTCP_XR_JB_ADAPTIVE: sprintf(jba, "ADAPTIVE"); break; default: sprintf(jba, "unknown"); break; } sprintf(jbr, "%d", xr_stat.tx.voip_mtc.rx_config & 0x0F); if (xr_stat.tx.voip_mtc.update.sec == 0) strcpy(last_update, "never"); else { pj_gettimeofday(&now); PJ_TIME_VAL_SUB(now, xr_stat.tx.voip_mtc.update); sprintf(last_update, "%02ldh:%02ldm:%02ld.%03lds ago", now.sec / 3600, (now.sec % 3600) / 60, now.sec % 60, now.msec); } len = pj_ansi_snprintf(p, end-p, "%s TX last update: %s\n" "%s packets : loss rate=%d (%.2f%%), discard rate=%d (%.2f%%)\n" "%s burst : density=%d (%.2f%%), duration=%d%s\n" "%s gap : density=%d (%.2f%%), duration=%d%s\n" "%s delay : round trip=%d%s, end system=%d%s\n" "%s level : signal=%s%s, noise=%s%s, RERL=%s%s\n" "%s quality : R factor=%s, ext R factor=%s\n" "%s MOS LQ=%s, MOS CQ=%s\n" "%s config : PLC=%s, JB=%s, JB rate=%s, Gmin=%d\n" "%s JB delay : cur=%d%s, max=%d%s, abs max=%d%s", indent, last_update, /* pakcets */ indent, xr_stat.tx.voip_mtc.loss_rate, xr_stat.tx.voip_mtc.loss_rate*100.0/256, xr_stat.tx.voip_mtc.discard_rate, xr_stat.tx.voip_mtc.discard_rate*100.0/256, /* burst */ indent, xr_stat.tx.voip_mtc.burst_den, xr_stat.tx.voip_mtc.burst_den*100.0/256, xr_stat.tx.voip_mtc.burst_dur, "ms", /* gap */ indent, xr_stat.tx.voip_mtc.gap_den, xr_stat.tx.voip_mtc.gap_den*100.0/256, xr_stat.tx.voip_mtc.gap_dur, "ms", /* delay */ indent, xr_stat.tx.voip_mtc.rnd_trip_delay, "ms", xr_stat.tx.voip_mtc.end_sys_delay, "ms", /* level */ indent, signal_lvl, "dB", noise_lvl, "dB", rerl, "", /* quality */ indent, r_factor, ext_r_factor, indent, mos_lq, mos_cq, /* config */ indent, plc, jba, jbr, xr_stat.tx.voip_mtc.gmin, /* JB delay */ indent, xr_stat.tx.voip_mtc.jb_nom, "ms", xr_stat.tx.voip_mtc.jb_max, "ms", xr_stat.tx.voip_mtc.jb_abs_max, "ms" ); VALIDATE_PRINT_BUF(); /* RTT delay (by receiver side) */ len = pj_ansi_snprintf(p, end-p, "%s RTT (from recv) min avg max last dev", indent); VALIDATE_PRINT_BUF(); len = pj_ansi_snprintf(p, end-p, "%s RTT msec : %7.3f %7.3f %7.3f %7.3f %7.3f", indent, xr_stat.rtt.min / 1000.0, xr_stat.rtt.mean / 1000.0, xr_stat.rtt.max / 1000.0, xr_stat.rtt.last / 1000.0, pj_math_stat_get_stddev(&xr_stat.rtt) / 1000.0 ); VALIDATE_PRINT_BUF(); } while(0); #endif } } /* Print call info */ void print_call(const char *title, int call_id, char *buf, pj_size_t size) { int len; pjsip_inv_session *inv = pjsua_var.calls[call_id].inv; pjsip_dialog *dlg = inv->dlg; char userinfo[128]; /* Dump invite sesion info. */ len = pjsip_hdr_print_on(dlg->remote.info, userinfo, sizeof(userinfo)); if (len < 0) pj_ansi_strcpy(userinfo, "<--uri too long-->"); else userinfo[len] = '\0'; len = pj_ansi_snprintf(buf, size, "%s[%s] %s", title, pjsip_inv_state_name(inv->state), userinfo); if (len < 1 || len >= (int)size) { pj_ansi_strcpy(buf, "<--uri too long-->"); len = 18; } else buf[len] = '\0'; } /* * Dump call and media statistics to string. */ PJ_DEF(pj_status_t) pjsua_call_dump( pjsua_call_id call_id, pj_bool_t with_media, char *buffer, unsigned maxlen, const char *indent) { pjsua_call *call; pjsip_dialog *dlg; pj_time_val duration, res_delay, con_delay; char tmp[128]; char *p, *end; pj_status_t status; int len; pjmedia_transport_info tp_info; PJ_ASSERT_RETURN(call_id>=0 && call_id<(int)pjsua_var.ua_cfg.max_calls, PJ_EINVAL); status = acquire_call("pjsua_call_dump()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return status; *buffer = '\0'; p = buffer; end = buffer + maxlen; len = 0; print_call(indent, call_id, tmp, sizeof(tmp)); len = pj_ansi_strlen(tmp); pj_ansi_strcpy(buffer, tmp); p += len; *p++ = '\r'; *p++ = '\n'; /* Calculate call duration */ if (call->conn_time.sec != 0) { pj_gettimeofday(&duration); PJ_TIME_VAL_SUB(duration, call->conn_time); con_delay = call->conn_time; PJ_TIME_VAL_SUB(con_delay, call->start_time); } else { duration.sec = duration.msec = 0; con_delay.sec = con_delay.msec = 0; } /* Calculate first response delay */ if (call->res_time.sec != 0) { res_delay = call->res_time; PJ_TIME_VAL_SUB(res_delay, call->start_time); } else { res_delay.sec = res_delay.msec = 0; } /* Print duration */ len = pj_ansi_snprintf(p, end-p, "%s Call time: %02dh:%02dm:%02ds, " "1st res in %d ms, conn in %dms", indent, (int)(duration.sec / 3600), (int)((duration.sec % 3600)/60), (int)(duration.sec % 60), (int)PJ_TIME_VAL_MSEC(res_delay), (int)PJ_TIME_VAL_MSEC(con_delay)); if (len > 0 && len < end-p) { p += len; *p++ = '\n'; *p = '\0'; } /* Get and ICE SRTP status */ pjmedia_transport_info_init(&tp_info); pjmedia_transport_get_info(call->med_tp, &tp_info); if (tp_info.specific_info_cnt > 0) { unsigned i; for (i = 0; i < tp_info.specific_info_cnt; ++i) { if (tp_info.spc_info[i].type == PJMEDIA_TRANSPORT_TYPE_SRTP) { pjmedia_srtp_info *srtp_info = (pjmedia_srtp_info*) tp_info.spc_info[i].buffer; len = pj_ansi_snprintf(p, end-p, "%s SRTP status: %s Crypto-suite: %s", indent, (srtp_info->active?"Active":"Not active"), srtp_info->tx_policy.name.ptr); if (len > 0 && len < end-p) { p += len; *p++ = '\n'; *p = '\0'; } } else if (tp_info.spc_info[i].type==PJMEDIA_TRANSPORT_TYPE_ICE) { const pjmedia_ice_transport_info *ii; ii = (const pjmedia_ice_transport_info*) tp_info.spc_info[i].buffer; len = pj_ansi_snprintf(p, end-p, "%s ICE role: %s, state: %s, comp_cnt: %u", indent, pj_ice_sess_role_name(ii->role), pj_ice_strans_state_name(ii->sess_state), ii->comp_cnt); if (len > 0 && len < end-p) { p += len; *p++ = '\n'; *p = '\0'; } } } } /* Dump session statistics */ if (with_media && call->session) dump_media_session(indent, p, end-p, call); pjsip_dlg_dec_lock(dlg); return PJ_SUCCESS; } /* Proto */ static pj_status_t perform_lock_codec(pjsua_call *call); /* Timer callback to send re-INVITE or UPDATE to lock codec */ static void reinv_timer_cb(pj_timer_heap_t *th, pj_timer_entry *entry) { pjsua_call_id call_id = (pjsua_call_id)(pj_size_t)entry->user_data; pjsip_dialog *dlg; pjsua_call *call; pj_status_t status; PJ_UNUSED_ARG(th); pjsua_var.calls[call_id].lock_codec.reinv_timer.id = PJ_FALSE; status = acquire_call("reinv_timer_cb()", call_id, &call, &dlg); if (status != PJ_SUCCESS) return; status = perform_lock_codec(call); pjsip_dlg_dec_lock(dlg); } /* Check if the specified format can be skipped in counting codecs */ static pj_bool_t is_non_av_fmt(const pjmedia_sdp_media *m, const pj_str_t *fmt) { const pj_str_t STR_TEL = {"telephone-event", 15}; unsigned pt; pt = pj_strtoul(fmt); /* Check for comfort noise */ if (pt == PJMEDIA_RTP_PT_CN) return PJ_TRUE; /* Dynamic PT, check the format name */ if (pt >= 96) { pjmedia_sdp_attr *a; pjmedia_sdp_rtpmap rtpmap; /* Get the format name */ a = pjmedia_sdp_attr_find2(m->attr_count, m->attr, "rtpmap", fmt); if (a && pjmedia_sdp_attr_get_rtpmap(a, &rtpmap)==PJ_SUCCESS) { /* Check for telephone-event */ if (pj_stricmp(&rtpmap.enc_name, &STR_TEL)==0) return PJ_TRUE; } else { /* Invalid SDP, should not reach here */ pj_assert(!"SDP should have been validated!"); return PJ_TRUE; } } return PJ_FALSE; } /* Send re-INVITE or UPDATE with new SDP offer to select only one codec * out of several codecs presented by callee in his answer. */ static pj_status_t perform_lock_codec(pjsua_call *call) { const pj_str_t STR_UPDATE = {"UPDATE", 6}; const pjmedia_sdp_session *local_sdp = NULL, *new_sdp; const pjmedia_sdp_media *ref_m; pjmedia_sdp_media *m; unsigned i, codec_cnt = 0; pj_bool_t rem_can_update; pjsip_tx_data *tdata; pj_status_t status; PJ_ASSERT_RETURN(call->lock_codec.reinv_timer.id==PJ_FALSE, PJ_EINVALIDOP); /* Verify if another SDP negotiation is in progress, e.g: session timer * or another re-INVITE. */ if (call->inv==NULL || call->inv->neg==NULL || pjmedia_sdp_neg_get_state(call->inv->neg)!=PJMEDIA_SDP_NEG_STATE_DONE) { return PJMEDIA_SDPNEG_EINSTATE; } /* Don't do this if call is disconnecting! */ if (call->inv->state > PJSIP_INV_STATE_CONFIRMED || call->inv->cause >= 200) { return PJ_EINVALIDOP; } /* Verify if another SDP negotiation has been completed by comparing * the SDP version. */ status = pjmedia_sdp_neg_get_active_local(call->inv->neg, &local_sdp); if (status != PJ_SUCCESS) return status; if (local_sdp->origin.version > call->lock_codec.sdp_ver) return PJMEDIA_SDP_EINVER; /* Verify if media is deactivated */ if (call->media_st == PJSUA_CALL_MEDIA_NONE || call->media_st == PJSUA_CALL_MEDIA_ERROR || call->media_dir == PJMEDIA_DIR_NONE) { return PJ_EINVALIDOP; } PJ_LOG(3, (THIS_FILE, "Updating media session to use only one codec..")); /* Update the new offer so it contains only a codec. Note that formats * order in the offer should have been matched to the answer, so we can * just directly update the offer without looking-up the answer. */ new_sdp = pjmedia_sdp_session_clone(call->inv->pool_prov, local_sdp); m = new_sdp->media[call->audio_idx]; ref_m = local_sdp->media[call->audio_idx]; pj_assert(ref_m->desc.port); codec_cnt = 0; i = 0; while (i < m->desc.fmt_count) { pjmedia_sdp_attr *a; pj_str_t *fmt = &m->desc.fmt[i]; if (is_non_av_fmt(m, fmt) || (++codec_cnt == 1)) { ++i; continue; } /* Remove format */ a = pjmedia_sdp_attr_find2(m->attr_count, m->attr, "rtpmap", fmt); if (a) pjmedia_sdp_attr_remove(&m->attr_count, m->attr, a); a = pjmedia_sdp_attr_find2(m->attr_count, m->attr, "fmtp", fmt); if (a) pjmedia_sdp_attr_remove(&m->attr_count, m->attr, a); pj_array_erase(m->desc.fmt, sizeof(m->desc.fmt[0]), m->desc.fmt_count, i); --m->desc.fmt_count; } /* Last check if SDP trully needs to be updated. It is possible that OA * negotiations have completed and SDP has changed but we didn't * increase the SDP version (should not happen!). */ if (ref_m->desc.fmt_count == m->desc.fmt_count) return PJ_SUCCESS; /* Send UPDATE or re-INVITE */ rem_can_update = pjsip_dlg_remote_has_cap(call->inv->dlg, PJSIP_H_ALLOW, NULL, &STR_UPDATE) == PJSIP_DIALOG_CAP_SUPPORTED; if (rem_can_update) { status = pjsip_inv_update(call->inv, NULL, new_sdp, &tdata); } else { status = pjsip_inv_reinvite(call->inv, NULL, new_sdp, &tdata); } if (status==PJ_EINVALIDOP && ++call->lock_codec.retry_cnt <= LOCK_CODEC_MAX_RETRY) { /* Ups, let's reschedule again */ pj_time_val delay = {0, LOCK_CODEC_RETRY_INTERVAL}; pj_time_val_normalize(&delay); call->lock_codec.reinv_timer.id = PJ_TRUE; pjsip_endpt_schedule_timer(pjsua_var.endpt, &call->lock_codec.reinv_timer, &delay); return status; } else if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Error creating UPDATE/re-INVITE to lock codec", status); return status; } /* Send the UPDATE/re-INVITE request */ status = pjsip_inv_send_msg(call->inv, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Error sending UPDATE/re-INVITE in lock codec", status); return status; } return status; } /* Check if remote answerer has given us more than one codecs. If so, * create another offer with one codec only to lock down the codec. */ static pj_status_t lock_codec(pjsua_call *call) { pjsip_inv_session *inv = call->inv; const pjmedia_sdp_session *local_sdp, *remote_sdp; const pjmedia_sdp_media *rem_m, *loc_m; unsigned codec_cnt=0, i; pj_time_val delay = {0, 0}; const pj_str_t st_update = {"UPDATE", 6}; pj_status_t status; /* Stop lock codec timer, if it is active */ if (call->lock_codec.reinv_timer.id) { pjsip_endpt_cancel_timer(pjsua_var.endpt, &call->lock_codec.reinv_timer); call->lock_codec.reinv_timer.id = PJ_FALSE; } /* Skip this if we are the answerer */ if (!inv->neg || !pjmedia_sdp_neg_was_answer_remote(inv->neg)) { return PJ_SUCCESS; } /* Skip this if the media is inactive or error */ if (call->media_st == PJSUA_CALL_MEDIA_NONE || call->media_st == PJSUA_CALL_MEDIA_ERROR || call->media_dir == PJMEDIA_DIR_NONE) { return PJ_SUCCESS; } /* Delay this when the SDP negotiation done in call state EARLY and * remote does not support UPDATE method. */ if (inv->state == PJSIP_INV_STATE_EARLY && pjsip_dlg_remote_has_cap(inv->dlg, PJSIP_H_ALLOW, NULL, &st_update)!= PJSIP_DIALOG_CAP_SUPPORTED) { call->lock_codec.pending = PJ_TRUE; return PJ_SUCCESS; } status = pjmedia_sdp_neg_get_active_local(inv->neg, &local_sdp); if (status != PJ_SUCCESS) return status; status = pjmedia_sdp_neg_get_active_remote(inv->neg, &remote_sdp); if (status != PJ_SUCCESS) return status; PJ_ASSERT_RETURN(call->audio_idx>=0 && call->audio_idx < (int)remote_sdp->media_count, PJ_EINVALIDOP); rem_m = remote_sdp->media[call->audio_idx]; loc_m = local_sdp->media[call->audio_idx]; /* Verify that media must be active. */ pj_assert(loc_m->desc.port && rem_m->desc.port); /* Count the formats in the answer. */ if (rem_m->desc.fmt_count==1) { codec_cnt = 1; } else { for (i=0; idesc.fmt_count && codec_cnt <= 1; ++i) { if (!is_non_av_fmt(rem_m, &rem_m->desc.fmt[i])) ++codec_cnt; } } if (codec_cnt <= 1) { /* Answer contains single codec. */ call->lock_codec.retry_cnt = 0; return PJ_SUCCESS; } /* Remote keeps answering with multiple codecs, let's just give up * locking codec to avoid infinite retry loop. */ if (++call->lock_codec.retry_cnt > LOCK_CODEC_MAX_RETRY) return PJ_SUCCESS; PJ_LOG(3, (THIS_FILE, "Got answer with multiple codecs, scheduling " "updating media session to use only one codec..")); call->lock_codec.sdp_ver = local_sdp->origin.version; /* Can't send UPDATE or re-INVITE now, so just schedule it immediately. * See: https://trac.pjsip.org/repos/ticket/1149 */ pj_timer_entry_init(&call->lock_codec.reinv_timer, PJ_TRUE, (void*)(pj_size_t)call->index, &reinv_timer_cb); pjsip_endpt_schedule_timer(pjsua_var.endpt, &call->lock_codec.reinv_timer, &delay); return PJ_SUCCESS; } /* * This callback receives notification from invite session when the * session state has changed. */ static void pjsua_call_on_state_changed(pjsip_inv_session *inv, pjsip_event *e) { pjsua_call *call; call = (pjsua_call*) inv->dlg->mod_data[pjsua_var.mod.id]; if (!call) { return; } /* Get call times */ switch (inv->state) { case PJSIP_INV_STATE_EARLY: case PJSIP_INV_STATE_CONNECTING: if (call->res_time.sec == 0) pj_gettimeofday(&call->res_time); call->last_code = (pjsip_status_code) e->body.tsx_state.tsx->status_code; pj_strncpy(&call->last_text, &e->body.tsx_state.tsx->status_text, sizeof(call->last_text_buf_)); break; case PJSIP_INV_STATE_CONFIRMED: pj_gettimeofday(&call->conn_time); /* See if lock codec was pended as media update was done in the * EARLY state and remote does not support UPDATE. */ if (call->lock_codec.pending) { pj_status_t status; status = lock_codec(call); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to lock codec", status); } call->lock_codec.pending = PJ_FALSE; } break; case PJSIP_INV_STATE_DISCONNECTED: pj_gettimeofday(&call->dis_time); if (call->res_time.sec == 0) pj_gettimeofday(&call->res_time); if (e->type == PJSIP_EVENT_TSX_STATE && e->body.tsx_state.tsx->status_code > call->last_code) { call->last_code = (pjsip_status_code) e->body.tsx_state.tsx->status_code; pj_strncpy(&call->last_text, &e->body.tsx_state.tsx->status_text, sizeof(call->last_text_buf_)); } else { call->last_code = PJSIP_SC_REQUEST_TERMINATED; pj_strncpy(&call->last_text, pjsip_get_status_text(call->last_code), sizeof(call->last_text_buf_)); } /* Stop lock codec timer, if it is active */ if (call->lock_codec.reinv_timer.id) { pjsip_endpt_cancel_timer(pjsua_var.endpt, &call->lock_codec.reinv_timer); call->lock_codec.reinv_timer.id = PJ_FALSE; } break; default: call->last_code = (pjsip_status_code) e->body.tsx_state.tsx->status_code; pj_strncpy(&call->last_text, &e->body.tsx_state.tsx->status_text, sizeof(call->last_text_buf_)); break; } /* If this is an outgoing INVITE that was created because of * REFER/transfer, send NOTIFY to transferer. */ if (call->xfer_sub && e->type==PJSIP_EVENT_TSX_STATE) { int st_code = -1; pjsip_evsub_state ev_state = PJSIP_EVSUB_STATE_ACTIVE; switch (call->inv->state) { case PJSIP_INV_STATE_NULL: case PJSIP_INV_STATE_CALLING: /* Do nothing */ break; case PJSIP_INV_STATE_EARLY: case PJSIP_INV_STATE_CONNECTING: st_code = e->body.tsx_state.tsx->status_code; if (call->inv->state == PJSIP_INV_STATE_CONNECTING) ev_state = PJSIP_EVSUB_STATE_TERMINATED; else ev_state = PJSIP_EVSUB_STATE_ACTIVE; break; case PJSIP_INV_STATE_CONFIRMED: #if 0 /* We don't need this, as we've terminated the subscription in * CONNECTING state. */ /* When state is confirmed, send the final 200/OK and terminate * subscription. */ st_code = e->body.tsx_state.tsx->status_code; ev_state = PJSIP_EVSUB_STATE_TERMINATED; #endif break; case PJSIP_INV_STATE_DISCONNECTED: st_code = e->body.tsx_state.tsx->status_code; ev_state = PJSIP_EVSUB_STATE_TERMINATED; break; case PJSIP_INV_STATE_INCOMING: /* Nothing to do. Just to keep gcc from complaining about * unused enums. */ break; } if (st_code != -1) { pjsip_tx_data *tdata; pj_status_t status; status = pjsip_xfer_notify( call->xfer_sub, ev_state, st_code, NULL, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create NOTIFY", status); } else { status = pjsip_xfer_send_request(call->xfer_sub, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send NOTIFY", status); } } } } /* Ticket #1627: Invoke on_call_tsx_state() when call is disconnected. */ if (inv->state == PJSIP_INV_STATE_DISCONNECTED && e->type == PJSIP_EVENT_TSX_STATE && call->inv && pjsua_var.ua_cfg.cb.on_call_tsx_state) { (*pjsua_var.ua_cfg.cb.on_call_tsx_state)(call->index, e->body.tsx_state.tsx, e); } if (pjsua_var.ua_cfg.cb.on_call_state) (*pjsua_var.ua_cfg.cb.on_call_state)(call->index, e); /* call->inv may be NULL now */ /* Destroy media session when invite session is disconnected. */ if (inv->state == PJSIP_INV_STATE_DISCONNECTED) { PJSUA_LOCK(); pjsua_media_channel_deinit(call->index); /* Free call */ call->inv = NULL; pj_assert(pjsua_var.call_cnt > 0); --pjsua_var.call_cnt; /* Reset call */ reset_call(call->index); PJSUA_UNLOCK(); } } /* * This callback is called by invite session framework when UAC session * has forked. */ static void pjsua_call_on_forked( pjsip_inv_session *inv, pjsip_event *e) { PJ_UNUSED_ARG(inv); PJ_UNUSED_ARG(e); PJ_TODO(HANDLE_FORKED_DIALOG); } /* * Callback from UA layer when forked dialog response is received. */ pjsip_dialog* on_dlg_forked(pjsip_dialog *dlg, pjsip_rx_data *res) { if (dlg->uac_has_2xx && res->msg_info.cseq->method.id == PJSIP_INVITE_METHOD && pjsip_rdata_get_tsx(res) == NULL && res->msg_info.msg->line.status.code/100 == 2) { pjsip_dialog *forked_dlg; pjsip_tx_data *bye; pj_status_t status; /* Create forked dialog */ status = pjsip_dlg_fork(dlg, res, &forked_dlg); if (status != PJ_SUCCESS) return NULL; pjsip_dlg_inc_lock(forked_dlg); /* Disconnect the call */ status = pjsip_dlg_create_request(forked_dlg, &pjsip_bye_method, -1, &bye); if (status == PJ_SUCCESS) { status = pjsip_dlg_send_request(forked_dlg, bye, -1, NULL); } pjsip_dlg_dec_lock(forked_dlg); if (status != PJ_SUCCESS) { return NULL; } return forked_dlg; } else { return dlg; } } /* * Disconnect call upon error. */ static void call_disconnect( pjsip_inv_session *inv, int code ) { pjsua_call *call; pjsip_tx_data *tdata; pj_status_t status; call = (pjsua_call*) inv->dlg->mod_data[pjsua_var.mod.id]; status = pjsip_inv_end_session(inv, code, NULL, &tdata); if (status != PJ_SUCCESS) return; /* Add SDP in 488 status */ if (call && call->med_tp && tdata->msg->type==PJSIP_RESPONSE_MSG && code==PJSIP_SC_NOT_ACCEPTABLE_HERE) { pjmedia_sdp_session *local_sdp; pjmedia_transport_info ti; pjmedia_transport_info_init(&ti); pjmedia_transport_get_info(call->med_tp, &ti); status = pjmedia_endpt_create_sdp(pjsua_var.med_endpt, tdata->pool, 1, &ti.sock_info, &local_sdp); if (status == PJ_SUCCESS) { pjsip_create_sdp_body(tdata->pool, local_sdp, &tdata->msg->body); } } pjsip_inv_send_msg(inv, tdata); } /* * Callback to be called when SDP offer/answer negotiation has just completed * in the session. This function will start/update media if negotiation * has succeeded. */ static void pjsua_call_on_media_update(pjsip_inv_session *inv, pj_status_t status) { pjsua_call *call; const pjmedia_sdp_session *local_sdp; const pjmedia_sdp_session *remote_sdp; //const pj_str_t st_update = {"UPDATE", 6}; call = (pjsua_call*) inv->dlg->mod_data[pjsua_var.mod.id]; if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "SDP negotiation has failed", status); /* Do not deinitialize media since this may be a re-INVITE or * UPDATE (which in this case the media should not get affected * by the failed re-INVITE/UPDATE). The media will be shutdown * when call is disconnected anyway. */ /* Stop/destroy media, if any */ /*pjsua_media_channel_deinit(call->index);*/ /* Disconnect call if we're not in the middle of initializing an * UAS dialog and if this is not a re-INVITE */ if (inv->state != PJSIP_INV_STATE_NULL && inv->state != PJSIP_INV_STATE_CONFIRMED) { call_disconnect(inv, PJSIP_SC_UNSUPPORTED_MEDIA_TYPE); } return; } /* Get local and remote SDP */ status = pjmedia_sdp_neg_get_active_local(call->inv->neg, &local_sdp); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to retrieve currently active local SDP", status); //call_disconnect(inv, PJSIP_SC_UNSUPPORTED_MEDIA_TYPE); return; } status = pjmedia_sdp_neg_get_active_remote(call->inv->neg, &remote_sdp); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to retrieve currently active remote SDP", status); //call_disconnect(inv, PJSIP_SC_UNSUPPORTED_MEDIA_TYPE); return; } /* Update remote's NAT type */ if (pjsua_var.ua_cfg.nat_type_in_sdp) { update_remote_nat_type(call, remote_sdp); } /* Update media channel with the new SDP */ status = pjsua_media_channel_update(call->index, local_sdp, remote_sdp); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create media session", status); call_disconnect(inv, PJSIP_SC_NOT_ACCEPTABLE_HERE); /* No need to deinitialize; media will be shutdown when call * state is disconnected anyway. */ /*pjsua_media_channel_deinit(call->index);*/ return; } /* Ticket #476: make sure only one codec is specified in the answer. */ status = lock_codec(call); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to lock codec", status); } /* Call application callback, if any */ if (pjsua_var.ua_cfg.cb.on_call_media_state) pjsua_var.ua_cfg.cb.on_call_media_state(call->index); } /* Modify SDP for call hold. */ static pj_status_t modify_sdp_of_call_hold(pjsua_call *call, pj_pool_t *pool, pjmedia_sdp_session *sdp) { pjmedia_sdp_media *m; /* Call-hold is done by set the media direction to 'sendonly' * (PJMEDIA_DIR_ENCODING), except when current media direction is * 'inactive' (PJMEDIA_DIR_NONE). * (See RFC 3264 Section 8.4 and RFC 4317 Section 3.1) */ /* http://trac.pjsip.org/repos/ticket/880 if (call->media_dir != PJMEDIA_DIR_ENCODING) { */ /* https://trac.pjsip.org/repos/ticket/1142: * configuration to use c=0.0.0.0 for call hold. */ m = sdp->media[call->audio_idx]; if (call->call_hold_type == PJSUA_CALL_HOLD_TYPE_RFC2543) { pjmedia_sdp_conn *conn; pjmedia_sdp_attr *attr; /* Get SDP media connection line */ conn = m->conn; if (!conn) conn = sdp->conn; /* Modify address */ conn->addr = pj_str("0.0.0.0"); /* Remove existing directions attributes */ pjmedia_sdp_media_remove_all_attr(m, "sendrecv"); pjmedia_sdp_media_remove_all_attr(m, "sendonly"); pjmedia_sdp_media_remove_all_attr(m, "recvonly"); pjmedia_sdp_media_remove_all_attr(m, "inactive"); /* Add inactive attribute */ attr = pjmedia_sdp_attr_create(pool, "inactive", NULL); pjmedia_sdp_media_add_attr(m, attr); } else { pjmedia_sdp_attr *attr; /* Remove existing directions attributes */ pjmedia_sdp_media_remove_all_attr(m, "sendrecv"); pjmedia_sdp_media_remove_all_attr(m, "sendonly"); pjmedia_sdp_media_remove_all_attr(m, "recvonly"); pjmedia_sdp_media_remove_all_attr(m, "inactive"); if (call->media_dir & PJMEDIA_DIR_ENCODING) { /* Add sendonly attribute */ attr = pjmedia_sdp_attr_create(pool, "sendonly", NULL); pjmedia_sdp_media_add_attr(m, attr); } else { /* Add inactive attribute */ attr = pjmedia_sdp_attr_create(pool, "inactive", NULL); pjmedia_sdp_media_add_attr(m, attr); } } return PJ_SUCCESS; } /* Create SDP for call hold. */ static pj_status_t create_sdp_of_call_hold(pjsua_call *call, pjmedia_sdp_session **p_sdp) { pj_status_t status; pj_pool_t *pool; pjmedia_sdp_session *sdp; /* Use call's provisional pool */ pool = call->inv->pool_prov; /* Create new offer */ status = pjsua_media_channel_create_sdp(call->index, pool, NULL, &sdp, NULL); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create local SDP", status); return status; } status = modify_sdp_of_call_hold(call, pool, sdp); if (status != PJ_SUCCESS) return status; *p_sdp = sdp; return PJ_SUCCESS; } /* * Called when session received new offer. */ static void pjsua_call_on_rx_offer(pjsip_inv_session *inv, const pjmedia_sdp_session *offer) { pjsua_call *call; pjmedia_sdp_conn *conn = NULL; pjmedia_sdp_session *answer; pj_status_t status; call = (pjsua_call*) inv->dlg->mod_data[pjsua_var.mod.id]; /* Supply candidate answer */ PJ_LOG(4,(THIS_FILE, "Call %d: received updated media offer", call->index)); status = pjsua_media_channel_create_sdp(call->index, call->inv->pool_prov, offer, &answer, NULL); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create local SDP", status); return; } if (call->audio_idx >= 0 && call->audio_idx < (int)offer->media_count) conn = offer->media[call->audio_idx]->conn; if (!conn) conn = offer->conn; /* Check if offer's conn address is zero */ if (pj_strcmp2(&conn->addr, "0.0.0.0")==0 || pj_strcmp2(&conn->addr, "0")==0) { /* Modify address */ answer->conn->addr = pj_str("0.0.0.0"); } /* Check if call is on-hold */ if (call->local_hold) { modify_sdp_of_call_hold(call, call->inv->pool_prov, answer); } status = pjsip_inv_set_sdp_answer(call->inv, answer); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to set answer", status); return; } } /* * Called to generate new offer. */ static void pjsua_call_on_create_offer(pjsip_inv_session *inv, pjmedia_sdp_session **offer) { pjsua_call *call; pj_status_t status; call = (pjsua_call*) inv->dlg->mod_data[pjsua_var.mod.id]; /* See if we've put call on hold. */ if (call->local_hold) { PJ_LOG(4,(THIS_FILE, "Call %d: call is on-hold locally, creating call-hold SDP ", call->index)); status = create_sdp_of_call_hold( call, offer ); } else { PJ_LOG(4,(THIS_FILE, "Call %d: asked to send a new offer", call->index)); status = pjsua_media_channel_create_sdp(call->index, call->inv->pool_prov, NULL, offer, NULL); } if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create local SDP", status); return; } } /* * Callback called by event framework when the xfer subscription state * has changed. */ static void xfer_client_on_evsub_state( pjsip_evsub *sub, pjsip_event *event) { PJ_UNUSED_ARG(event); /* * When subscription is accepted (got 200/OK to REFER), check if * subscription suppressed. */ if (pjsip_evsub_get_state(sub) == PJSIP_EVSUB_STATE_ACCEPTED) { pjsip_rx_data *rdata; pjsip_generic_string_hdr *refer_sub; const pj_str_t REFER_SUB = { "Refer-Sub", 9 }; pjsua_call *call; call = (pjsua_call*) pjsip_evsub_get_mod_data(sub, pjsua_var.mod.id); /* Must be receipt of response message */ pj_assert(event->type == PJSIP_EVENT_TSX_STATE && event->body.tsx_state.type == PJSIP_EVENT_RX_MSG); rdata = event->body.tsx_state.src.rdata; /* Find Refer-Sub header */ refer_sub = (pjsip_generic_string_hdr*) pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &REFER_SUB, NULL); /* Check if subscription is suppressed */ if (refer_sub && pj_stricmp2(&refer_sub->hvalue, "false")==0) { /* Since no subscription is desired, assume that call has been * transfered successfully. */ if (call && pjsua_var.ua_cfg.cb.on_call_transfer_status) { const pj_str_t ACCEPTED = { "Accepted", 8 }; pj_bool_t cont = PJ_FALSE; (*pjsua_var.ua_cfg.cb.on_call_transfer_status)(call->index, 200, &ACCEPTED, PJ_TRUE, &cont); } /* Yes, subscription is suppressed. * Terminate our subscription now. */ PJ_LOG(4,(THIS_FILE, "Xfer subscription suppressed, terminating " "event subcription...")); pjsip_evsub_terminate(sub, PJ_TRUE); } else { /* Notify application about call transfer progress. * Initially notify with 100/Accepted status. */ if (call && pjsua_var.ua_cfg.cb.on_call_transfer_status) { const pj_str_t ACCEPTED = { "Accepted", 8 }; pj_bool_t cont = PJ_FALSE; (*pjsua_var.ua_cfg.cb.on_call_transfer_status)(call->index, 100, &ACCEPTED, PJ_FALSE, &cont); } } } /* * On incoming NOTIFY, notify application about call transfer progress. */ else if (pjsip_evsub_get_state(sub) == PJSIP_EVSUB_STATE_ACTIVE || pjsip_evsub_get_state(sub) == PJSIP_EVSUB_STATE_TERMINATED) { pjsua_call *call; pjsip_msg *msg; pjsip_msg_body *body; pjsip_status_line status_line; pj_bool_t is_last; pj_bool_t cont; pj_status_t status; call = (pjsua_call*) pjsip_evsub_get_mod_data(sub, pjsua_var.mod.id); /* When subscription is terminated, clear the xfer_sub member of * the inv_data. */ if (pjsip_evsub_get_state(sub) == PJSIP_EVSUB_STATE_TERMINATED) { pjsip_evsub_set_mod_data(sub, pjsua_var.mod.id, NULL); PJ_LOG(4,(THIS_FILE, "Xfer client subscription terminated")); } if (!call || !event || !pjsua_var.ua_cfg.cb.on_call_transfer_status) { /* Application is not interested with call progress status */ return; } /* This better be a NOTIFY request */ if (event->type == PJSIP_EVENT_TSX_STATE && event->body.tsx_state.type == PJSIP_EVENT_RX_MSG) { pjsip_rx_data *rdata; rdata = event->body.tsx_state.src.rdata; /* Check if there's body */ msg = rdata->msg_info.msg; body = msg->body; if (!body) { PJ_LOG(2,(THIS_FILE, "Warning: received NOTIFY without message body")); return; } /* Check for appropriate content */ if (pj_stricmp2(&body->content_type.type, "message") != 0 || pj_stricmp2(&body->content_type.subtype, "sipfrag") != 0) { PJ_LOG(2,(THIS_FILE, "Warning: received NOTIFY with non message/sipfrag " "content")); return; } /* Try to parse the content */ status = pjsip_parse_status_line((char*)body->data, body->len, &status_line); if (status != PJ_SUCCESS) { PJ_LOG(2,(THIS_FILE, "Warning: received NOTIFY with invalid " "message/sipfrag content")); return; } } else { status_line.code = 500; status_line.reason = *pjsip_get_status_text(500); } /* Notify application */ is_last = (pjsip_evsub_get_state(sub)==PJSIP_EVSUB_STATE_TERMINATED); cont = !is_last; (*pjsua_var.ua_cfg.cb.on_call_transfer_status)(call->index, status_line.code, &status_line.reason, is_last, &cont); if (!cont) { pjsip_evsub_set_mod_data(sub, pjsua_var.mod.id, NULL); } /* If the call transfer has completed but the subscription is * not terminated, terminate it now. */ if (status_line.code/100 == 2 && !is_last) { pjsip_tx_data *tdata; status = pjsip_evsub_initiate(sub, &pjsip_subscribe_method, 0, &tdata); if (status == PJ_SUCCESS) status = pjsip_evsub_send_request(sub, tdata); } } } /* * Callback called by event framework when the xfer subscription state * has changed. */ static void xfer_server_on_evsub_state( pjsip_evsub *sub, pjsip_event *event) { PJ_UNUSED_ARG(event); /* * When subscription is terminated, clear the xfer_sub member of * the inv_data. */ if (pjsip_evsub_get_state(sub) == PJSIP_EVSUB_STATE_TERMINATED) { pjsua_call *call; call = (pjsua_call*) pjsip_evsub_get_mod_data(sub, pjsua_var.mod.id); if (!call) return; pjsip_evsub_set_mod_data(sub, pjsua_var.mod.id, NULL); call->xfer_sub = NULL; PJ_LOG(4,(THIS_FILE, "Xfer server subscription terminated")); } } /* * Follow transfer (REFER) request. */ static void on_call_transfered( pjsip_inv_session *inv, pjsip_rx_data *rdata ) { pj_status_t status; pjsip_tx_data *tdata; pjsua_call *existing_call; int new_call; const pj_str_t str_refer_to = { "Refer-To", 8}; const pj_str_t str_refer_sub = { "Refer-Sub", 9 }; const pj_str_t str_ref_by = { "Referred-By", 11 }; pjsip_generic_string_hdr *refer_to; pjsip_generic_string_hdr *refer_sub; pjsip_hdr *ref_by_hdr; pj_bool_t no_refer_sub = PJ_FALSE; char *uri; pjsua_msg_data msg_data; pj_str_t tmp; pjsip_status_code code; pjsip_evsub *sub; existing_call = (pjsua_call*) inv->dlg->mod_data[pjsua_var.mod.id]; /* Find the Refer-To header */ refer_to = (pjsip_generic_string_hdr*) pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &str_refer_to, NULL); if (refer_to == NULL) { /* Invalid Request. * No Refer-To header! */ PJ_LOG(4,(THIS_FILE, "Received REFER without Refer-To header!")); pjsip_dlg_respond( inv->dlg, rdata, 400, NULL, NULL, NULL); return; } /* Find optional Refer-Sub header */ refer_sub = (pjsip_generic_string_hdr*) pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &str_refer_sub, NULL); if (refer_sub) { if (!pj_strnicmp2(&refer_sub->hvalue, "true", 4)==0) no_refer_sub = PJ_TRUE; } /* Find optional Referred-By header (to be copied onto outgoing INVITE * request. */ ref_by_hdr = (pjsip_hdr*) pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &str_ref_by, NULL); /* Notify callback */ code = PJSIP_SC_ACCEPTED; if (pjsua_var.ua_cfg.cb.on_call_transfer_request) (*pjsua_var.ua_cfg.cb.on_call_transfer_request)(existing_call->index, &refer_to->hvalue, &code); if (code < 200) code = PJSIP_SC_ACCEPTED; if (code >= 300) { /* Application rejects call transfer request */ pjsip_dlg_respond( inv->dlg, rdata, code, NULL, NULL, NULL); return; } PJ_LOG(3,(THIS_FILE, "Call to %.*s is being transfered to %.*s", (int)inv->dlg->remote.info_str.slen, inv->dlg->remote.info_str.ptr, (int)refer_to->hvalue.slen, refer_to->hvalue.ptr)); if (no_refer_sub) { /* * Always answer with 2xx. */ pjsip_tx_data *tdata; const pj_str_t str_false = { "false", 5}; pjsip_hdr *hdr; status = pjsip_dlg_create_response(inv->dlg, rdata, code, NULL, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create 2xx response to REFER", status); return; } /* Add Refer-Sub header */ hdr = (pjsip_hdr*) pjsip_generic_string_hdr_create(tdata->pool, &str_refer_sub, &str_false); pjsip_msg_add_hdr(tdata->msg, hdr); /* Send answer */ status = pjsip_dlg_send_response(inv->dlg, pjsip_rdata_get_tsx(rdata), tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create 2xx response to REFER", status); return; } /* Don't have subscription */ sub = NULL; } else { struct pjsip_evsub_user xfer_cb; pjsip_hdr hdr_list; /* Init callback */ pj_bzero(&xfer_cb, sizeof(xfer_cb)); xfer_cb.on_evsub_state = &xfer_server_on_evsub_state; /* Init additional header list to be sent with REFER response */ pj_list_init(&hdr_list); /* Create transferee event subscription */ status = pjsip_xfer_create_uas( inv->dlg, &xfer_cb, rdata, &sub); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create xfer uas", status); pjsip_dlg_respond( inv->dlg, rdata, 500, NULL, NULL, NULL); return; } /* If there's Refer-Sub header and the value is "true", send back * Refer-Sub in the response with value "true" too. */ if (refer_sub) { const pj_str_t str_true = { "true", 4 }; pjsip_hdr *hdr; hdr = (pjsip_hdr*) pjsip_generic_string_hdr_create(inv->dlg->pool, &str_refer_sub, &str_true); pj_list_push_back(&hdr_list, hdr); } /* Accept the REFER request, send 2xx. */ pjsip_xfer_accept(sub, rdata, code, &hdr_list); /* Create initial NOTIFY request */ status = pjsip_xfer_notify( sub, PJSIP_EVSUB_STATE_ACTIVE, 100, NULL, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create NOTIFY to REFER", status); return; } /* Send initial NOTIFY request */ status = pjsip_xfer_send_request( sub, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send NOTIFY to REFER", status); return; } } /* We're cheating here. * We need to get a null terminated string from a pj_str_t. * So grab the pointer from the hvalue and NULL terminate it, knowing * that the NULL position will be occupied by a newline. */ uri = refer_to->hvalue.ptr; uri[refer_to->hvalue.slen] = '\0'; /* Init msg_data */ pjsua_msg_data_init(&msg_data); /* If Referred-By header is present in the REFER request, copy this * to the outgoing INVITE request. */ if (ref_by_hdr != NULL) { pjsip_hdr *dup = (pjsip_hdr*) pjsip_hdr_clone(rdata->tp_info.pool, ref_by_hdr); pj_list_push_back(&msg_data.hdr_list, dup); } /* Now make the outgoing call. */ tmp = pj_str(uri); status = pjsua_call_make_call(existing_call->acc_id, &tmp, 0, existing_call->user_data, &msg_data, &new_call); if (status != PJ_SUCCESS) { /* Notify xferer about the error (if we have subscription) */ if (sub) { status = pjsip_xfer_notify(sub, PJSIP_EVSUB_STATE_TERMINATED, 500, NULL, &tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to create NOTIFY to REFER", status); return; } status = pjsip_xfer_send_request(sub, tdata); if (status != PJ_SUCCESS) { pjsua_perror(THIS_FILE, "Unable to send NOTIFY to REFER", status); return; } } return; } if (sub) { /* Put the server subscription in inv_data. * Subsequent state changed in pjsua_inv_on_state_changed() will be * reported back to the server subscription. */ pjsua_var.calls[new_call].xfer_sub = sub; /* Put the invite_data in the subscription. */ pjsip_evsub_set_mod_data(sub, pjsua_var.mod.id, &pjsua_var.calls[new_call]); } } /* * This callback is called when transaction state has changed in INVITE * session. We use this to trap: * - incoming REFER request. * - incoming MESSAGE request. */ static void pjsua_call_on_tsx_state_changed(pjsip_inv_session *inv, pjsip_transaction *tsx, pjsip_event *e) { pjsua_call *call; call = (pjsua_call*) inv->dlg->mod_data[pjsua_var.mod.id]; if (call == NULL) { return; } if (call->inv == NULL) { /* Call has been disconnected. */ return; } /* https://trac.pjsip.org/repos/ticket/1452: * If a request is retried due to 401/407 challenge, don't process the * transaction first but wait until we've retried it. */ if (tsx->role == PJSIP_ROLE_UAC && (tsx->status_code==401 || tsx->status_code==407) && tsx->last_tx && tsx->last_tx->auth_retry) { return; } /* Notify application callback first */ if (pjsua_var.ua_cfg.cb.on_call_tsx_state) { (*pjsua_var.ua_cfg.cb.on_call_tsx_state)(call->index, tsx, e); } if (tsx->role==PJSIP_ROLE_UAS && tsx->state==PJSIP_TSX_STATE_TRYING && pjsip_method_cmp(&tsx->method, pjsip_get_refer_method())==0) { /* * Incoming REFER request. */ on_call_transfered(call->inv, e->body.tsx_state.src.rdata); } else if (tsx->role==PJSIP_ROLE_UAS && tsx->state==PJSIP_TSX_STATE_TRYING && pjsip_method_cmp(&tsx->method, &pjsip_message_method)==0) { /* * Incoming MESSAGE request! */ pjsip_rx_data *rdata; pjsip_msg *msg; pjsip_accept_hdr *accept_hdr; pj_status_t status; rdata = e->body.tsx_state.src.rdata; msg = rdata->msg_info.msg; /* Request MUST have message body, with Content-Type equal to * "text/plain". */ if (pjsua_im_accept_pager(rdata, &accept_hdr) == PJ_FALSE) { pjsip_hdr hdr_list; pj_list_init(&hdr_list); pj_list_push_back(&hdr_list, accept_hdr); pjsip_dlg_respond( inv->dlg, rdata, PJSIP_SC_NOT_ACCEPTABLE_HERE, NULL, &hdr_list, NULL ); return; } /* Respond with 200 first, so that remote doesn't retransmit in case * the UI takes too long to process the message. */ status = pjsip_dlg_respond( inv->dlg, rdata, 200, NULL, NULL, NULL); /* Process MESSAGE request */ pjsua_im_process_pager(call->index, &inv->dlg->remote.info_str, &inv->dlg->local.info_str, rdata); } else if (tsx->role == PJSIP_ROLE_UAC && pjsip_method_cmp(&tsx->method, &pjsip_message_method)==0) { /* Handle outgoing pager status */ if (tsx->status_code >= 200) { pjsua_im_data *im_data; im_data = (pjsua_im_data*) tsx->mod_data[pjsua_var.mod.id]; /* im_data can be NULL if this is typing indication */ if (im_data && pjsua_var.ua_cfg.cb.on_pager_status) { pjsua_var.ua_cfg.cb.on_pager_status(im_data->call_id, &im_data->to, &im_data->body, im_data->user_data, (pjsip_status_code) tsx->status_code, &tsx->status_text); } } } else if (tsx->role == PJSIP_ROLE_UAC && tsx->last_tx == (pjsip_tx_data*)call->hold_msg && tsx->state >= PJSIP_TSX_STATE_COMPLETED) { /* Monitor the status of call hold request */ call->hold_msg = NULL; if (tsx->status_code/100 != 2) { /* Outgoing call hold failed */ call->local_hold = PJ_FALSE; PJ_LOG(3,(THIS_FILE, "Error putting call %d on hold (reason=%d)", call->index, tsx->status_code)); } } } /* Redirection handler */ static pjsip_redirect_op pjsua_call_on_redirected(pjsip_inv_session *inv, const pjsip_uri *target, const pjsip_event *e) { pjsua_call *call = (pjsua_call*) inv->dlg->mod_data[pjsua_var.mod.id]; pjsip_redirect_op op; if (pjsua_var.ua_cfg.cb.on_call_redirected) { op = (*pjsua_var.ua_cfg.cb.on_call_redirected)(call->index, target, e); } else { PJ_LOG(4,(THIS_FILE, "Unhandled redirection for call %d " "(callback not implemented by application). Disconnecting " "call.", call->index)); op = PJSIP_REDIRECT_STOP; } return op; }