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freeswitch/libs/unimrcp/libs/mrcp-client/src/mrcp_client_session.c

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/*
* Copyright 2008-2014 Arsen Chaloyan
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* $Id: mrcp_client_session.c 2251 2014-11-21 02:36:44Z achaloyan@gmail.com $
*/
#include "mrcp_client_session.h"
#include "mrcp_resource_factory.h"
#include "mrcp_resource.h"
#include "mrcp_sig_agent.h"
#include "mrcp_client_connection.h"
#include "mrcp_session.h"
#include "mrcp_session_descriptor.h"
#include "mrcp_control_descriptor.h"
#include "mrcp_message.h"
#include "mrcp_ca_factory.h"
#include "mpf_engine_factory.h"
#include "mpf_termination_factory.h"
#include "mpf_stream.h"
#include "apt_consumer_task.h"
#include "apt_obj_list.h"
#include "apt_log.h"
/** Macro to log session name and identifier */
#define MRCP_SESSION_NAMESID(session) \
session->base.name, MRCP_SESSION_SID(&session->base)
#define IS_SESSION_TERMINATE(app_message) \
(app_message->message_type == MRCP_APP_MESSAGE_TYPE_SIGNALING && \
app_message->sig_message.command_id == MRCP_SIG_COMMAND_SESSION_TERMINATE)
void mrcp_client_session_add(mrcp_client_t *client, mrcp_client_session_t *session);
void mrcp_client_session_remove(mrcp_client_t *client, mrcp_client_session_t *session);
static apt_bool_t mrcp_client_session_offer_send(mrcp_client_session_t *session);
static apt_bool_t mrcp_app_session_terminate_raise(mrcp_client_session_t *session, mrcp_sig_status_code_e status);
static apt_bool_t mrcp_app_sig_response_raise(mrcp_client_session_t *session, apt_bool_t process_pending_requests);
static apt_bool_t mrcp_app_sig_event_raise(mrcp_client_session_t *session, mrcp_channel_t *channel);
static apt_bool_t mrcp_app_control_message_raise(mrcp_client_session_t *session, mrcp_channel_t *channel, mrcp_message_t *mrcp_message);
static apt_bool_t mrcp_app_failure_message_raise(mrcp_client_session_t *session);
static apt_bool_t mrcp_app_request_dispatch(mrcp_client_session_t *session, const mrcp_app_message_t *app_message);
static apt_bool_t mrcp_client_resource_answer_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor);
static apt_bool_t mrcp_client_control_media_answer_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor);
static apt_bool_t mrcp_client_av_media_answer_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor);
static mrcp_channel_t* mrcp_client_channel_find_by_name(mrcp_client_session_t *session, const apt_str_t *resource_name);
static APR_INLINE mrcp_version_e mrcp_session_version_get(mrcp_client_session_t *session)
{
return session->profile->mrcp_version;
}
static APR_INLINE void mrcp_client_session_state_set(mrcp_client_session_t *session, mrcp_client_session_state_e state)
{
if(session->subrequest_count != 0) {
/* error case */
apt_obj_log(APT_LOG_MARK,APT_PRIO_ERROR,session->base.log_obj,"Unexpected State Change [%d] pending subrequests [%d] "APT_NAMESID_FMT,
state,
session->subrequest_count,
MRCP_SESSION_NAMESID(session));
session->subrequest_count = 0;
}
session->state = state;
}
static APR_INLINE void mrcp_client_session_subrequest_add(mrcp_client_session_t *session)
{
session->subrequest_count++;
}
static APR_INLINE apt_bool_t mrcp_client_session_subrequest_remove(mrcp_client_session_t *session)
{
if(!session->subrequest_count) {
/* error case */
return FALSE;
}
session->subrequest_count--;
return (session->subrequest_count ? FALSE : TRUE);
}
static mrcp_app_message_t* mrcp_client_app_response_create(const mrcp_app_message_t *app_request, mrcp_sig_status_code_e status, apr_pool_t *pool)
{
mrcp_app_message_t *app_response = apr_palloc(pool,sizeof(mrcp_app_message_t));
*app_response = *app_request;
app_response->sig_message.message_type = MRCP_SIG_MESSAGE_TYPE_RESPONSE;
app_response->sig_message.status = status;
return app_response;
}
mrcp_channel_t* mrcp_client_channel_create(
mrcp_client_session_t *session,
mrcp_resource_t *resource,
mpf_termination_t *termination,
mpf_rtp_termination_descriptor_t *rtp_descriptor,
void *obj)
{
mrcp_channel_t *channel = apr_palloc(session->base.pool,sizeof(mrcp_channel_t));
channel->pool = session->base.pool;
channel->obj = obj;
channel->session = &session->base;
channel->control_channel = NULL;
channel->termination = termination;
channel->rtp_termination_slot = NULL;
channel->resource = resource;
channel->waiting_for_channel = FALSE;
channel->waiting_for_termination = FALSE;
if(rtp_descriptor) {
rtp_termination_slot_t *termination_slot = apr_palloc(channel->pool,sizeof(rtp_termination_slot_t));
termination_slot->descriptor = rtp_descriptor;
termination_slot->termination = NULL;
termination_slot->waiting = FALSE;
termination_slot->channel = channel;
termination_slot->id = 0;
channel->rtp_termination_slot = termination_slot;
}
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Create Channel "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
return channel;
}
apt_bool_t mrcp_client_session_answer_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor)
{
if(!session->offer) {
return FALSE;
}
if(!descriptor) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Receive Answer "APT_NAMESID_FMT" [null descriptor]",
MRCP_SESSION_NAMESID(session));
session->status = MRCP_SIG_STATUS_CODE_FAILURE;
/* raise app response */
return mrcp_app_sig_response_raise(session,TRUE);
}
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Receive Answer "APT_NAMESID_FMT" [c:%d a:%d v:%d] Status %d",
MRCP_SESSION_NAMESID(session),
descriptor->control_media_arr->nelts,
descriptor->audio_media_arr->nelts,
descriptor->video_media_arr->nelts,
descriptor->response_code);
if(descriptor->response_code >=200 && descriptor->response_code < 300) {
mrcp_client_session_state_set(session,SESSION_STATE_PROCESSING_ANSWER);
if(session->context) {
/* first, reset/destroy existing associations and topology */
if(mpf_engine_topology_message_add(
session->base.media_engine,
MPF_RESET_ASSOCIATIONS,session->context,
&session->mpf_task_msg) == TRUE){
mrcp_client_session_subrequest_add(session);
}
}
if(mrcp_session_version_get(session) == MRCP_VERSION_1) {
if(mrcp_client_resource_answer_process(session,descriptor) != TRUE) {
session->status = MRCP_SIG_STATUS_CODE_FAILURE;
}
}
else {
mrcp_client_control_media_answer_process(session,descriptor);
mrcp_client_av_media_answer_process(session,descriptor);
}
if(session->context) {
/* apply topology based on assigned associations */
if(mpf_engine_topology_message_add(
session->base.media_engine,
MPF_APPLY_TOPOLOGY,session->context,
&session->mpf_task_msg) == TRUE) {
mrcp_client_session_subrequest_add(session);
}
mpf_engine_message_send(session->base.media_engine,&session->mpf_task_msg);
}
}
else {
session->status = MRCP_SIG_STATUS_CODE_TERMINATE;
}
/* store received answer */
session->answer = descriptor;
if(!session->subrequest_count) {
/* raise app response */
mrcp_app_sig_response_raise(session,TRUE);
}
return TRUE;
}
apt_bool_t mrcp_client_session_terminate_response_process(mrcp_client_session_t *session)
{
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Session Terminated "APT_NAMESID_FMT, MRCP_SESSION_NAMESID(session));
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
mrcp_app_session_terminate_raise(session,MRCP_SIG_STATUS_CODE_SUCCESS);
}
return TRUE;
}
apt_bool_t mrcp_client_session_terminate_event_process(mrcp_client_session_t *session)
{
if(session->state == SESSION_STATE_TERMINATING) {
/* session termination request has been sent, still waiting for the response,
all the events must be ignored at this stage */
apt_obj_log(APT_LOG_MARK,APT_PRIO_WARNING,session->base.log_obj,"Unexpected Event! "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
return FALSE;
}
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Mark Session as Disconnected "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
session->disconnected = TRUE;
if(!session->active_request) {
/* raise app event */
mrcp_app_sig_event_raise(session,NULL);
}
return TRUE;
}
apt_bool_t mrcp_client_session_control_response_process(mrcp_client_session_t *session, mrcp_message_t *message)
{
mrcp_channel_t *channel = mrcp_client_channel_find_by_name(session,&message->channel_id.resource_name);
if(!channel) {
return FALSE;
}
return mrcp_app_control_message_raise(session,channel,message);
}
apt_bool_t mrcp_client_session_discover_response_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor)
{
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Resources Discovered %s", session->base.name);
if(!session->active_request) {
return FALSE;
}
if(!descriptor) {
/* raise app response */
session->status = MRCP_SIG_STATUS_CODE_FAILURE;
return mrcp_app_sig_response_raise(session,TRUE);
}
if(mrcp_session_version_get(session) == MRCP_VERSION_1) {
if(descriptor->resource_state == TRUE) {
mrcp_control_descriptor_t *control_media;
if(!session->answer) {
session->answer = descriptor;
}
control_media = mrcp_control_descriptor_create(session->base.pool);
control_media->id = mrcp_session_control_media_add(session->answer,control_media);
control_media->resource_name = descriptor->resource_name;
}
}
else {
session->answer = descriptor;
}
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
mrcp_app_message_t *response;
response = mrcp_client_app_response_create(session->active_request,MRCP_SIG_STATUS_CODE_SUCCESS,session->base.pool);
response->descriptor = session->answer;
session->answer = NULL;
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Raise App Resource Discovery Response %s", session->base.name);
session->application->handler(response);
session->active_request = apt_list_pop_front(session->request_queue);
if(session->active_request) {
mrcp_app_request_dispatch(session,session->active_request);
}
}
return TRUE;
}
apt_bool_t mrcp_client_on_channel_add(mrcp_channel_t *channel, mrcp_control_descriptor_t *descriptor, apt_bool_t status)
{
mrcp_client_session_t *session = (mrcp_client_session_t*)channel->session;
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Control Channel Added "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
channel->resource->name.buf);
if(!channel->waiting_for_channel) {
return FALSE;
}
channel->waiting_for_channel = FALSE;
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
/* send offer to server */
mrcp_client_session_offer_send(session);
}
return TRUE;
}
apt_bool_t mrcp_client_on_channel_modify(mrcp_channel_t *channel, mrcp_control_descriptor_t *descriptor, apt_bool_t status)
{
mrcp_client_session_t *session = (mrcp_client_session_t*)channel->session;
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Control Channel Modified "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
channel->resource->name.buf);
if(!channel->waiting_for_channel) {
return FALSE;
}
channel->waiting_for_channel = FALSE;
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
/* raise app response */
if(status != TRUE) {
session->status = MRCP_SIG_STATUS_CODE_FAILURE;
}
mrcp_app_sig_response_raise(session,TRUE);
}
return TRUE;
}
apt_bool_t mrcp_client_on_channel_remove(mrcp_channel_t *channel, apt_bool_t status)
{
mrcp_client_session_t *session = (mrcp_client_session_t*)channel->session;
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Control Channel Removed "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
channel->resource->name.buf);
if(!channel->waiting_for_channel) {
return FALSE;
}
channel->waiting_for_channel = FALSE;
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
mrcp_app_session_terminate_raise(
session,
status == TRUE ? MRCP_SIG_STATUS_CODE_SUCCESS : MRCP_SIG_STATUS_CODE_FAILURE);
}
return TRUE;
}
apt_bool_t mrcp_client_on_message_receive(mrcp_channel_t *channel, mrcp_message_t *message)
{
mrcp_client_session_t *session = (mrcp_client_session_t*)channel->session;
return mrcp_app_control_message_raise(session,channel,message);
}
apt_bool_t mrcp_client_on_disconnect(mrcp_channel_t *channel)
{
mrcp_client_session_t *session = (mrcp_client_session_t*)channel->session;
return mrcp_client_session_terminate_event_process(session);
}
mrcp_app_message_t* mrcp_client_app_signaling_request_create(mrcp_sig_command_e command_id, apr_pool_t *pool)
{
mrcp_app_message_t *app_message = apr_palloc(pool,sizeof(mrcp_app_message_t));
app_message->message_type = MRCP_APP_MESSAGE_TYPE_SIGNALING;
app_message->sig_message.message_type = MRCP_SIG_MESSAGE_TYPE_REQUEST;
app_message->sig_message.command_id = command_id;
return app_message;
}
mrcp_app_message_t* mrcp_client_app_signaling_event_create(mrcp_sig_event_e event_id, apr_pool_t *pool)
{
mrcp_app_message_t *app_message = apr_palloc(pool,sizeof(mrcp_app_message_t));
app_message->message_type = MRCP_APP_MESSAGE_TYPE_SIGNALING;
app_message->sig_message.message_type = MRCP_SIG_MESSAGE_TYPE_EVENT;
app_message->sig_message.event_id = event_id;
return app_message;
}
mrcp_app_message_t* mrcp_client_app_control_message_create(apr_pool_t *pool)
{
mrcp_app_message_t *app_message = apr_palloc(pool,sizeof(mrcp_app_message_t));
app_message->message_type = MRCP_APP_MESSAGE_TYPE_CONTROL;
return app_message;
}
apt_bool_t mrcp_client_app_message_process(mrcp_app_message_t *app_message)
{
mrcp_client_session_t *session = (mrcp_client_session_t*)app_message->session;
if(app_message->message_type == MRCP_APP_MESSAGE_TYPE_SIGNALING) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Receive App Request "APT_NAMESID_FMT" [%d]",
MRCP_SESSION_NAMESID(session),
app_message->sig_message.command_id);
}
else {
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Receive App MRCP Request "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
}
if(session->active_request) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Push Request to Queue "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
apt_list_push_back(session->request_queue,app_message,session->base.pool);
return TRUE;
}
session->active_request = app_message;
mrcp_app_request_dispatch(session,app_message);
return TRUE;
}
static apt_bool_t mrcp_client_session_offer_send(mrcp_client_session_t *session)
{
mrcp_session_descriptor_t *descriptor = session->offer;
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Send Offer "APT_NAMESID_FMT" [c:%d a:%d v:%d] to %s:%hu",
MRCP_SESSION_NAMESID(session),
descriptor->control_media_arr->nelts,
descriptor->audio_media_arr->nelts,
descriptor->video_media_arr->nelts,
session->profile->signaling_settings->server_ip,
session->profile->signaling_settings->server_port);
return mrcp_session_offer(&session->base,descriptor);
}
static apt_bool_t mrcp_app_session_terminate_raise(mrcp_client_session_t *session, mrcp_sig_status_code_e status)
{
int i;
mrcp_channel_t *channel;
for(i=0; i<session->channels->nelts; i++) {
channel = APR_ARRAY_IDX(session->channels,i,mrcp_channel_t*);
if(!channel) continue;
if(channel->control_channel) {
mrcp_client_control_channel_destroy(channel->control_channel);
channel->control_channel = NULL;
}
}
mrcp_client_session_remove(session->application->client,session);
/* raise app response */
if(status != MRCP_SIG_STATUS_CODE_SUCCESS) {
session->status = status;
}
return mrcp_app_sig_response_raise(session,FALSE);
}
static apt_bool_t mrcp_app_sig_response_raise(mrcp_client_session_t *session, apt_bool_t process_pending_requests)
{
mrcp_app_message_t *response;
const mrcp_app_message_t *request = session->active_request;
if(!request) {
return FALSE;
}
session->active_request = NULL;
if(session->disconnected == TRUE) {
session->status = MRCP_SIG_STATUS_CODE_TERMINATE;
}
response = mrcp_client_app_response_create(request,session->status,session->base.pool);
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Raise App Response "APT_NAMESID_FMT" [%d] %s [%d]",
MRCP_SESSION_NAMESID(session),
response->sig_message.command_id,
session->status == MRCP_SIG_STATUS_CODE_SUCCESS ? "SUCCESS" : "FAILURE",
session->status);
session->application->handler(response);
if(process_pending_requests) {
session->active_request = apt_list_pop_front(session->request_queue);
if(session->active_request) {
mrcp_app_request_dispatch(session,session->active_request);
}
}
return TRUE;
}
static apt_bool_t mrcp_app_sig_event_raise(mrcp_client_session_t *session, mrcp_channel_t *channel)
{
mrcp_app_message_t *app_event;
if(!session) {
return FALSE;
}
app_event = mrcp_client_app_signaling_event_create(MRCP_SIG_EVENT_TERMINATE,session->base.pool);
app_event->application = session->application;
app_event->session = &session->base;
app_event->channel = channel;
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Raise App Event "APT_NAMESID_FMT" [%d]",
MRCP_SESSION_NAMESID(session),
app_event->sig_message.event_id);
return session->application->handler(app_event);
}
static apt_bool_t mrcp_app_control_message_raise(mrcp_client_session_t *session, mrcp_channel_t *channel, mrcp_message_t *mrcp_message)
{
if(mrcp_message->start_line.message_type == MRCP_MESSAGE_TYPE_RESPONSE) {
mrcp_app_message_t *response;
mrcp_message_t *mrcp_request;
if(!session->active_request || !session->active_request->control_message) {
return FALSE;
}
response = mrcp_client_app_response_create(session->active_request,0,session->base.pool);
mrcp_request = session->active_request->control_message;
mrcp_message->start_line.method_id = mrcp_request->start_line.method_id;
mrcp_message->start_line.method_name = mrcp_request->start_line.method_name;
response->control_message = mrcp_message;
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Raise App MRCP Response "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
session->application->handler(response);
session->active_request = apt_list_pop_front(session->request_queue);
if(session->active_request) {
mrcp_app_request_dispatch(session,session->active_request);
}
}
else if(mrcp_message->start_line.message_type == MRCP_MESSAGE_TYPE_EVENT) {
mrcp_app_message_t *app_message;
app_message = mrcp_client_app_control_message_create(session->base.pool);
app_message->control_message = mrcp_message;
app_message->application = session->application;
app_message->session = &session->base;
app_message->channel = channel;
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Raise App MRCP Event "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
session->application->handler(app_message);
}
return TRUE;
}
static apt_bool_t mrcp_app_failure_message_raise(mrcp_client_session_t *session)
{
mrcp_app_message_t *response;
const mrcp_app_message_t *request = session->active_request;
if(!request) {
return FALSE;
}
session->active_request = NULL;
response = mrcp_client_app_response_create(request,session->status,session->base.pool);
if(response->message_type == MRCP_APP_MESSAGE_TYPE_SIGNALING) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Raise App Response "APT_NAMESID_FMT" [%d] %s [%d]",
MRCP_SESSION_NAMESID(session),
response->sig_message.command_id,
session->status == MRCP_SIG_STATUS_CODE_SUCCESS ? "SUCCESS" : "FAILURE",
session->status);
}
else if(response->control_message){
mrcp_message_t *mrcp_response = mrcp_response_create(response->control_message,response->control_message->pool);
mrcp_response->start_line.status_code = MRCP_STATUS_CODE_METHOD_FAILED;
response->control_message = mrcp_response;
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Raise App MRCP Response "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
}
session->application->handler(response);
return TRUE;
}
static apt_bool_t mrcp_client_channel_find(mrcp_client_session_t *session, mrcp_channel_t *channel, int *index)
{
int i;
mrcp_channel_t *existing_channel;
for(i=0; i<session->channels->nelts; i++) {
existing_channel = APR_ARRAY_IDX(session->channels,i,mrcp_channel_t*);
if(existing_channel == channel) {
if(index) {
*index = i;
}
return TRUE;
}
}
return FALSE;
}
static rtp_termination_slot_t* mrcp_client_rtp_termination_find(mrcp_client_session_t *session, mpf_termination_t *termination)
{
int i;
rtp_termination_slot_t *slot;
for(i=0; i<session->terminations->nelts; i++) {
slot = &APR_ARRAY_IDX(session->terminations,i,rtp_termination_slot_t);
if(slot->termination == termination) {
return slot;
}
}
return NULL;
}
static mrcp_channel_t* mrcp_client_channel_termination_find(mrcp_client_session_t *session, mpf_termination_t *termination)
{
int i;
mrcp_channel_t *channel;
for(i=0; i<session->channels->nelts; i++) {
channel = APR_ARRAY_IDX(session->channels,i,mrcp_channel_t*);
if(!channel) continue;
if(channel->termination == termination) {
return channel;
}
}
return NULL;
}
static mrcp_channel_t* mrcp_client_channel_find_by_name(mrcp_client_session_t *session, const apt_str_t *resource_name)
{
int i;
mrcp_channel_t *channel;
for(i=0; i<session->channels->nelts; i++) {
channel = APR_ARRAY_IDX(session->channels,i,mrcp_channel_t*);
if(!channel || !channel->resource) continue;
if(apt_string_compare(&channel->resource->name,resource_name) == TRUE) {
return channel;
}
}
return NULL;
}
static apt_bool_t mrcp_client_message_send(mrcp_client_session_t *session, mrcp_channel_t *channel, mrcp_message_t *message)
{
if(!session->base.id.length) {
mrcp_message_t *response = mrcp_response_create(message,message->pool);
response->start_line.status_code = MRCP_STATUS_CODE_METHOD_FAILED;
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Raise App Failure MRCP Response "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
mrcp_app_control_message_raise(session,channel,response);
return TRUE;
}
message->channel_id.session_id = session->base.id;
message->start_line.request_id = ++session->base.last_request_id;
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Send MRCP Request "APT_NAMESIDRES_FMT" [%"MRCP_REQUEST_ID_FMT"]",
MRCP_SESSION_NAMESID(session),
channel->resource->name.buf,
message->start_line.request_id);
if(channel->control_channel) {
/* MRCPv2 */
mrcp_client_control_message_send(channel->control_channel,message);
}
else {
/* MRCPv1 */
mrcp_session_control_request(channel->session,message);
}
return TRUE;
}
static apt_bool_t mrcp_client_channel_modify(mrcp_client_session_t *session, mrcp_channel_t *channel, apt_bool_t enable)
{
int index;
if(!session->offer) {
return FALSE;
}
if(!channel->resource) {
return FALSE;
}
apt_obj_log(APT_LOG_MARK,APT_PRIO_NOTICE,session->base.log_obj,"Modify Control Channel "APT_NAMESIDRES_FMT" [%d]",
MRCP_SESSION_NAMESID(session),
channel->resource->name.buf,
enable);
if(mrcp_client_channel_find(session,channel,&index) == TRUE) {
mrcp_control_descriptor_t *control_media = mrcp_session_control_media_get(session->offer,(apr_size_t)index);
if(control_media) {
control_media->port = (enable == TRUE) ? TCP_DISCARD_PORT : 0;
}
if(channel->termination && channel->rtp_termination_slot) {
mpf_audio_stream_t *audio_stream = mpf_termination_audio_stream_get(
channel->termination);
mpf_rtp_media_descriptor_t *audio_media = mrcp_session_audio_media_get(
session->offer,
channel->rtp_termination_slot->id);
if(audio_media && audio_stream) {
mpf_stream_direction_e direction = mpf_stream_reverse_direction_get(audio_stream->direction);
if(enable == TRUE) {
audio_media->direction |= direction;
}
else {
audio_media->direction &= ~direction;
}
audio_media->state = (audio_media->direction != STREAM_DIRECTION_NONE) ? MPF_MEDIA_ENABLED : MPF_MEDIA_DISABLED;
}
}
}
session->offer->resource_name = channel->resource->name;
session->offer->resource_state = enable;
return mrcp_client_session_offer_send(session);
}
static apt_bool_t mrcp_client_channel_add(mrcp_client_session_t *session, mrcp_channel_t *channel)
{
mpf_rtp_termination_descriptor_t *rtp_descriptor = NULL;
rtp_termination_slot_t *slot;
apr_pool_t *pool = session->base.pool;
mrcp_client_profile_t *profile = session->profile;
if(mrcp_client_channel_find(session,channel,NULL) == TRUE) {
/* update */
return mrcp_client_channel_modify(session,channel,TRUE);
}
if(!session->offer) {
session->offer = mrcp_session_descriptor_create(pool);
}
mrcp_client_session_state_set(session,SESSION_STATE_GENERATING_OFFER);
if(mrcp_session_version_get(session) == MRCP_VERSION_1) {
session->offer->resource_name = channel->resource->name;
session->offer->resource_state = TRUE;
}
else {
mrcp_control_descriptor_t *control_media;
if(!channel->control_channel) {
channel->control_channel = mrcp_client_control_channel_create(session->base.connection_agent,channel,pool);
mrcp_client_control_channel_log_obj_set(channel->control_channel,session->base.log_obj);
}
control_media = mrcp_control_offer_create(pool);
control_media->id = mrcp_session_control_media_add(session->offer,control_media);
mrcp_cmid_add(control_media->cmid_arr,session->offer->control_media_arr->nelts);
control_media->resource_name = channel->resource->name;
if(mrcp_client_control_channel_add(channel->control_channel,control_media) == TRUE) {
channel->waiting_for_channel = TRUE;
mrcp_client_session_subrequest_add(session);
}
}
apt_obj_log(APT_LOG_MARK,APT_PRIO_NOTICE,session->base.log_obj,"Add Control Channel "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
channel->resource->name.buf);
/* add control channel */
APR_ARRAY_PUSH(session->channels,mrcp_channel_t*) = channel;
/* add rtp termination slot */
slot = apr_array_push(session->terminations);
slot->waiting = FALSE;
slot->termination = NULL;
slot->descriptor = NULL;
slot->channel = channel;
slot->id = 0;
if(channel->termination) {
/* media termination mode */
mpf_termination_t *termination;
mpf_audio_stream_t *audio_stream;
if(!session->context) {
/* create media context first */
session->context = mpf_engine_context_create(
session->base.media_engine,
session->base.name,
session,5,pool);
}
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Add Media Termination "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
mpf_termination_name_get(channel->termination));
if(mpf_engine_termination_message_add(
session->base.media_engine,
MPF_ADD_TERMINATION,session->context,channel->termination,NULL,
&session->mpf_task_msg) == TRUE) {
channel->waiting_for_termination = TRUE;
mrcp_client_session_subrequest_add(session);
}
/* initialize rtp descriptor */
rtp_descriptor = apr_palloc(pool,sizeof(mpf_rtp_termination_descriptor_t));
mpf_rtp_termination_descriptor_init(rtp_descriptor);
rtp_descriptor->audio.settings = profile->rtp_settings;
audio_stream = mpf_termination_audio_stream_get(channel->termination);
if(audio_stream) {
mpf_rtp_media_descriptor_t *media;
media = apr_palloc(pool,sizeof(mpf_rtp_media_descriptor_t));
mpf_rtp_media_descriptor_init(media);
media->state = MPF_MEDIA_ENABLED;
media->direction = mpf_stream_reverse_direction_get(audio_stream->direction);
rtp_descriptor->audio.local = media;
if(audio_stream->capabilities) {
rtp_descriptor->audio.capabilities = mpf_stream_capabilities_clone(audio_stream->capabilities,pool);
rtp_descriptor->audio.capabilities->direction = media->direction;
}
}
/* create rtp termination */
termination = mpf_termination_create(session->base.rtp_factory,session,pool);
slot->termination = termination;
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Add Media Termination "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
mpf_termination_name_get(termination));
/* send add termination request (add to media context) */
if(mpf_engine_termination_message_add(
session->base.media_engine,
MPF_ADD_TERMINATION,session->context,termination,rtp_descriptor,
&session->mpf_task_msg) == TRUE) {
slot->waiting = TRUE;
mrcp_client_session_subrequest_add(session);
}
mpf_engine_message_send(session->base.media_engine,&session->mpf_task_msg);
}
else {
/* bypass media mode */
if(channel->rtp_termination_slot) {
rtp_descriptor = channel->rtp_termination_slot->descriptor;
if(rtp_descriptor) {
if(rtp_descriptor->audio.local) {
session->offer->ip = rtp_descriptor->audio.local->ip;
session->offer->ext_ip = rtp_descriptor->audio.local->ext_ip;
rtp_descriptor->audio.local->id = mrcp_session_audio_media_add(session->offer,rtp_descriptor->audio.local);
rtp_descriptor->audio.local->mid = session->offer->audio_media_arr->nelts;
slot->id = session->offer->audio_media_arr->nelts - 1;
}
}
}
}
slot->descriptor = rtp_descriptor;
channel->rtp_termination_slot = slot;
if(!session->subrequest_count) {
/* send offer to server */
mrcp_client_session_offer_send(session);
}
return TRUE;
}
static apt_bool_t mrcp_client_session_update(mrcp_client_session_t *session)
{
if(!session->offer) {
return FALSE;
}
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Update Session "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
return mrcp_client_session_offer_send(session);
}
static apt_bool_t mrcp_client_session_terminate(mrcp_client_session_t *session)
{
mrcp_channel_t *channel;
rtp_termination_slot_t *slot;
int i;
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,session->base.log_obj,"Terminate Session "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
mrcp_client_session_state_set(session,SESSION_STATE_TERMINATING);
if(session->context) {
/* first destroy existing topology */
if(mpf_engine_topology_message_add(
session->base.media_engine,
MPF_DESTROY_TOPOLOGY,session->context,
&session->mpf_task_msg) == TRUE){
mrcp_client_session_subrequest_add(session);
}
}
/* remove existing control channels */
for(i=0; i<session->channels->nelts; i++) {
/* get existing channel */
channel = APR_ARRAY_IDX(session->channels,i,mrcp_channel_t*);
if(!channel) continue;
if(channel->control_channel) {
/* remove channel */
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Remove Control Channel "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
if(mrcp_client_control_channel_remove(channel->control_channel) == TRUE) {
channel->waiting_for_channel = TRUE;
mrcp_client_session_subrequest_add(session);
}
}
/* send subtract termination request */
if(channel->termination) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Subtract Media Termination "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
mpf_termination_name_get(channel->termination));
if(mpf_engine_termination_message_add(
session->base.media_engine,
MPF_SUBTRACT_TERMINATION,session->context,channel->termination,NULL,
&session->mpf_task_msg) == TRUE) {
channel->waiting_for_termination = TRUE;
mrcp_client_session_subrequest_add(session);
}
}
}
if(session->context) {
/* subtract existing terminations */
for(i=0; i<session->terminations->nelts; i++) {
/* get existing termination */
slot = &APR_ARRAY_IDX(session->terminations,i,rtp_termination_slot_t);
if(!slot->termination) continue;
/* send subtract termination request */
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Subtract Media Termination "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
mpf_termination_name_get(slot->termination));
if(mpf_engine_termination_message_add(
session->base.media_engine,
MPF_SUBTRACT_TERMINATION,session->context,slot->termination,NULL,
&session->mpf_task_msg) == TRUE) {
slot->waiting = TRUE;
mrcp_client_session_subrequest_add(session);
}
}
mpf_engine_message_send(session->base.media_engine,&session->mpf_task_msg);
}
mrcp_client_session_subrequest_add(session);
mrcp_session_terminate_request(&session->base);
return TRUE;
}
static apt_bool_t mrcp_client_resource_discover(mrcp_client_session_t *session)
{
mrcp_session_descriptor_t *descriptor = NULL;
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Discover Resources "APT_PTR_FMT, MRCP_SESSION_PTR(&session->base));
session->answer = NULL;
mrcp_client_session_state_set(session,SESSION_STATE_DISCOVERING);
if(mrcp_session_version_get(session) == MRCP_VERSION_1) {
mrcp_resource_t *resource;
mrcp_resource_id i;
for(i=0; i<MRCP_RESOURCE_TYPE_COUNT; i++) {
resource = mrcp_resource_get(session->profile->resource_factory,i);
if(!resource) continue;
descriptor = mrcp_session_descriptor_create(session->base.pool);
apt_string_copy(&descriptor->resource_name,&resource->name,session->base.pool);
if(mrcp_session_discover_request(&session->base,descriptor) == TRUE) {
mrcp_client_session_subrequest_add(session);
}
}
}
else {
if(mrcp_session_discover_request(&session->base,descriptor) == TRUE) {
mrcp_client_session_subrequest_add(session);
}
}
if(session->subrequest_count == 0) {
session->status = MRCP_SIG_STATUS_CODE_FAILURE;
mrcp_app_sig_response_raise(session,TRUE);
}
return TRUE;
}
static apt_bool_t mrcp_client_on_termination_add(mrcp_client_session_t *session, const mpf_message_t *mpf_message)
{
rtp_termination_slot_t *termination_slot;
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Media Termination Added "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
mpf_termination_name_get(mpf_message->termination));
termination_slot = mrcp_client_rtp_termination_find(session,mpf_message->termination);
if(termination_slot) {
/* rtp termination */
mpf_rtp_termination_descriptor_t *rtp_descriptor;
if(termination_slot->waiting == FALSE) {
return FALSE;
}
termination_slot->waiting = FALSE;
rtp_descriptor = mpf_message->descriptor;
if(rtp_descriptor->audio.local) {
session->offer->ip = rtp_descriptor->audio.local->ip;
session->offer->ext_ip = rtp_descriptor->audio.local->ext_ip;
rtp_descriptor->audio.local->id = mrcp_session_audio_media_add(session->offer,rtp_descriptor->audio.local);
rtp_descriptor->audio.local->mid = session->offer->audio_media_arr->nelts;
termination_slot->id = session->offer->audio_media_arr->nelts - 1;
}
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
/* send offer to server */
mrcp_client_session_offer_send(session);
}
}
else {
/* channel termination */
mrcp_channel_t *channel = mrcp_client_channel_termination_find(session,mpf_message->termination);
if(channel && channel->waiting_for_termination == TRUE) {
channel->waiting_for_termination = FALSE;
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
/* send offer to server */
mrcp_client_session_offer_send(session);
}
}
}
return TRUE;
}
static apt_bool_t mrcp_client_on_termination_modify(mrcp_client_session_t *session, const mpf_message_t *mpf_message)
{
rtp_termination_slot_t *termination_slot;
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Media Termination Modified "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
mpf_termination_name_get(mpf_message->termination));
termination_slot = mrcp_client_rtp_termination_find(session,mpf_message->termination);
if(termination_slot) {
/* rtp termination */
if(termination_slot->waiting == FALSE) {
return FALSE;
}
termination_slot->waiting = FALSE;
termination_slot->descriptor = mpf_message->descriptor;;
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
if(session->state == SESSION_STATE_GENERATING_OFFER) {
/* send offer to server */
mrcp_client_session_offer_send(session);
}
else if(session->state == SESSION_STATE_PROCESSING_ANSWER) {
/* raise app response */
mrcp_app_sig_response_raise(session,TRUE);
}
}
}
return TRUE;
}
static apt_bool_t mrcp_client_on_termination_subtract(mrcp_client_session_t *session, const mpf_message_t *mpf_message)
{
rtp_termination_slot_t *termination_slot;
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Media Termination Subtracted "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
mpf_termination_name_get(mpf_message->termination));
termination_slot = mrcp_client_rtp_termination_find(session,mpf_message->termination);
if(termination_slot) {
/* rtp termination */
if(termination_slot->waiting == FALSE) {
return FALSE;
}
termination_slot->waiting = FALSE;
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
mrcp_app_session_terminate_raise(session,MRCP_SIG_STATUS_CODE_SUCCESS);
}
}
else {
/* channel termination */
mrcp_channel_t *channel = mrcp_client_channel_termination_find(session,mpf_message->termination);
if(channel && channel->waiting_for_termination == TRUE) {
channel->waiting_for_termination = FALSE;
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
/* raise app response */
mrcp_app_sig_response_raise(session,TRUE);
}
}
}
return TRUE;
}
apt_bool_t mrcp_client_mpf_message_process(mpf_message_container_t *mpf_message_container)
{
apr_size_t i;
mrcp_client_session_t *session;
const mpf_message_t *mpf_message;
for(i=0; i<mpf_message_container->count; i++) {
mpf_message = &mpf_message_container->messages[i];
if(mpf_message->context) {
session = mpf_engine_context_object_get(mpf_message->context);
}
else {
session = NULL;
}
if(!session) {
apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Received MPF Message: NULL session");
continue;
}
if(mpf_message->message_type == MPF_MESSAGE_TYPE_RESPONSE) {
switch(mpf_message->command_id) {
case MPF_ADD_TERMINATION:
mrcp_client_on_termination_add(session,mpf_message);
break;
case MPF_MODIFY_TERMINATION:
mrcp_client_on_termination_modify(session,mpf_message);
break;
case MPF_SUBTRACT_TERMINATION:
mrcp_client_on_termination_subtract(session,mpf_message);
break;
case MPF_ADD_ASSOCIATION:
case MPF_REMOVE_ASSOCIATION:
case MPF_RESET_ASSOCIATIONS:
case MPF_APPLY_TOPOLOGY:
case MPF_DESTROY_TOPOLOGY:
if(mrcp_client_session_subrequest_remove(session) == TRUE) {
if(session->state == SESSION_STATE_GENERATING_OFFER) {
/* send offer to server */
mrcp_client_session_offer_send(session);
}
else if(session->state == SESSION_STATE_PROCESSING_ANSWER) {
/* raise app response */
mrcp_app_sig_response_raise(session,TRUE);
}
}
break;
default:
break;
}
}
else if(mpf_message->message_type == MPF_MESSAGE_TYPE_EVENT) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Process MPF Event "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
}
}
return TRUE;
}
static apt_bool_t mrcp_client_resource_answer_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor)
{
apt_bool_t status = TRUE;
if(session->offer->resource_state == TRUE) {
if(descriptor->resource_state == TRUE) {
mrcp_client_av_media_answer_process(session,descriptor);
}
else {
status = FALSE;
}
}
return status;
}
static apt_bool_t mrcp_client_control_media_answer_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor)
{
mrcp_channel_t *channel;
mrcp_control_descriptor_t *control_descriptor;
int i;
int count = session->channels->nelts;
if(count != descriptor->control_media_arr->nelts) {
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Number of control channels [%d] != Number of control media in answer [%d]",
count,descriptor->control_media_arr->nelts);
count = descriptor->control_media_arr->nelts;
}
if(!session->base.id.length) {
/* initial answer received, store session id and add to session's table */
control_descriptor = mrcp_session_control_media_get(descriptor,0);
if(control_descriptor) {
session->base.id = control_descriptor->session_id;
}
}
/* update existing control channels */
for(i=0; i<count; i++) {
/* get existing channel */
channel = APR_ARRAY_IDX(session->channels,i,mrcp_channel_t*);
if(!channel) continue;
/* get control descriptor */
control_descriptor = mrcp_session_control_media_get(descriptor,i);
/* modify channel */
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Modify Control Channel "APT_NAMESID_FMT,
MRCP_SESSION_NAMESID(session));
if(mrcp_client_control_channel_modify(channel->control_channel,control_descriptor) == TRUE) {
channel->waiting_for_channel = TRUE;
mrcp_client_session_subrequest_add(session);
}
}
return TRUE;
}
static apt_bool_t mrcp_client_av_media_answer_process(mrcp_client_session_t *session, mrcp_session_descriptor_t *descriptor)
{
rtp_termination_slot_t *slot;
int i;
int count = session->terminations->nelts;
if(count != descriptor->audio_media_arr->nelts) {
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Number of terminations [%d] != Number of audio media in answer [%d]",
count,descriptor->audio_media_arr->nelts);
count = descriptor->audio_media_arr->nelts;
}
/* update existing terminations */
for(i=0; i<count; i++) {
mpf_rtp_media_descriptor_t *remote_media;
mpf_rtp_termination_descriptor_t *rtp_descriptor;
/* get existing termination */
slot = &APR_ARRAY_IDX(session->terminations,i,rtp_termination_slot_t);
remote_media = mrcp_session_audio_media_get(descriptor,i);
if(slot->descriptor) {
slot->descriptor->audio.remote = remote_media;
}
if(slot->termination) {
/* construct termination descriptor */
rtp_descriptor = apr_palloc(session->base.pool,sizeof(mpf_rtp_termination_descriptor_t));
mpf_rtp_termination_descriptor_init(rtp_descriptor);
rtp_descriptor->audio.local = NULL;
rtp_descriptor->audio.remote = remote_media;
/* send modify termination request */
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Modify Media Termination "APT_NAMESIDRES_FMT,
MRCP_SESSION_NAMESID(session),
mpf_termination_name_get(slot->termination));
if(mpf_engine_termination_message_add(
session->base.media_engine,
MPF_MODIFY_TERMINATION,session->context,slot->termination,rtp_descriptor,
&session->mpf_task_msg) == TRUE) {
slot->waiting = TRUE;
mrcp_client_session_subrequest_add(session);
}
if(slot->channel && slot->channel->termination) {
if(mpf_engine_assoc_message_add(
session->base.media_engine,
MPF_ADD_ASSOCIATION,session->context,slot->termination,slot->channel->termination,
&session->mpf_task_msg) == TRUE) {
mrcp_client_session_subrequest_add(session);
}
}
}
}
return TRUE;
}
static apt_bool_t mrcp_app_request_dispatch(mrcp_client_session_t *session, const mrcp_app_message_t *app_message)
{
if(session->state == SESSION_STATE_TERMINATING) {
/* no more requests are allowed, as session is being terminated!
just return, it is horribly wrong and can crash anytime here */
apt_obj_log(APT_LOG_MARK,APT_PRIO_ERROR,session->base.log_obj,"Inappropriate Application Request "APT_NAMESID_FMT" [%d]",
MRCP_SESSION_NAMESID(session),
app_message->sig_message.command_id);
return FALSE;
}
if(session->disconnected == TRUE) {
/* cancel all the requests besides session termination one */
if(!IS_SESSION_TERMINATE(app_message)) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_WARNING,session->base.log_obj,"Cancel App Request "APT_NAMESID_FMT" [%d]",
MRCP_SESSION_NAMESID(session), app_message->sig_message.command_id);
session->status = MRCP_SIG_STATUS_CODE_CANCEL;
return mrcp_app_failure_message_raise(session);
}
}
if(session->registered == FALSE) {
if(IS_SESSION_TERMINATE(app_message)) {
/* if session is not registered, nothing to terminate, just respond with success */
session->status = MRCP_SIG_STATUS_CODE_SUCCESS;
return mrcp_app_sig_response_raise(session,FALSE);
}
/* select signaling agent */
session->base.signaling_agent = mrcp_sa_factory_agent_select(session->profile->sa_factory);
if(!session->base.signaling_agent) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_WARNING,session->base.log_obj,"Failed to Select Signaling Agent "APT_NAMESID_FMT" [%d]",
MRCP_SESSION_NAMESID(session),
app_message->sig_message.command_id);
session->status = MRCP_SIG_STATUS_CODE_FAILURE;
}
if(session->profile->mrcp_version == MRCP_VERSION_2) {
/* select connection agent */
session->base.connection_agent = mrcp_ca_factory_agent_select(session->profile->ca_factory);
if(!session->base.connection_agent) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_WARNING,session->base.log_obj,"Failed to Select Connection Agent "APT_NAMESID_FMT" [%d]",
MRCP_SESSION_NAMESID(session),
app_message->sig_message.command_id);
session->status = MRCP_SIG_STATUS_CODE_FAILURE;
}
}
if(session->profile->mpf_factory) {
/* select media engine */
session->base.media_engine = mpf_engine_factory_engine_select(session->profile->mpf_factory);
if(!session->base.media_engine) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_WARNING,session->base.log_obj,"Failed to Select Media Engine "APT_NAMESID_FMT" [%d]",
MRCP_SESSION_NAMESID(session),
app_message->sig_message.command_id);
session->status = MRCP_SIG_STATUS_CODE_FAILURE;
}
}
/* set rtp termination factory */
session->base.rtp_factory = session->profile->rtp_termination_factory;
if(session->status == MRCP_SIG_STATUS_CODE_FAILURE) {
/* raise app response in case of failure */
return mrcp_app_failure_message_raise(session);
}
if(session->base.signaling_agent->create_client_session(&session->base,session->profile->signaling_settings) != TRUE) {
/* raise app response */
apt_obj_log(APT_LOG_MARK,APT_PRIO_WARNING,session->base.log_obj,"Failed to Create Session "APT_NAMESID_FMT" [%d]",
MRCP_SESSION_NAMESID(session),
app_message->sig_message.command_id);
session->status = MRCP_SIG_STATUS_CODE_FAILURE;
return mrcp_app_failure_message_raise(session);
}
mrcp_client_session_add(session->application->client,session);
session->registered = TRUE;
}
session->status = MRCP_SIG_STATUS_CODE_SUCCESS;
switch(app_message->message_type) {
case MRCP_APP_MESSAGE_TYPE_SIGNALING:
{
apt_obj_log(APT_LOG_MARK,APT_PRIO_DEBUG,session->base.log_obj,"Dispatch App Request "APT_NAMESID_FMT" [%d]",
MRCP_SESSION_NAMESID(session),
app_message->sig_message.command_id);
switch(app_message->sig_message.command_id) {
case MRCP_SIG_COMMAND_SESSION_UPDATE:
mrcp_client_session_update(session);
break;
case MRCP_SIG_COMMAND_SESSION_TERMINATE:
mrcp_client_session_terminate(session);
break;
case MRCP_SIG_COMMAND_CHANNEL_ADD:
mrcp_client_channel_add(session,app_message->channel);
break;
case MRCP_SIG_COMMAND_CHANNEL_REMOVE:
mrcp_client_channel_modify(session,app_message->channel,FALSE);
break;
case MRCP_SIG_COMMAND_RESOURCE_DISCOVER:
mrcp_client_resource_discover(session);
break;
default:
break;
}
break;
}
case MRCP_APP_MESSAGE_TYPE_CONTROL:
{
mrcp_client_message_send(session,app_message->channel,app_message->control_message);
break;
}
}
return TRUE;
}
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