static apt_bool_t mrcp_server_agent_channel_add(mrcp_connection_agent_t *agent, mrcp_control_channel_t *channel, mrcp_control_descriptor_t *offer)
{
mrcp_control_descriptor_t *answer = mrcp_control_answer_create(offer,channel->pool);
apt_id_resource_generate(&offer->session_id,&offer->resource_name,'@',&channel->identifier,channel->pool);
if(offer->port) {
answer->port = agent->sockaddr->port;
}
if(offer->connection_type == MRCP_CONNECTION_TYPE_EXISTING) {
if(agent->force_new_connection == TRUE) {
/* force client to establish new connection */
answer->connection_type = MRCP_CONNECTION_TYPE_NEW;
}
else {
mrcp_connection_t *connection = NULL;
/* try to find any existing connection */
connection = mrcp_connection_find(agent,&offer->ip);
if(!connection) {
/* no existing conection found, force the new one */
answer->connection_type = MRCP_CONNECTION_TYPE_NEW;
}
}
}
if(!agent->null_connection) {
apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Create Pending Connection");
agent->null_connection = mrcp_connection_create();
agent->connection_list = apt_list_create(agent->null_connection->pool);
}
mrcp_connection_channel_add(agent->null_connection,channel);
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Add Control Channel <%s> to Pending Connection [%d]",
channel->identifier.buf,
apr_hash_count(agent->null_connection->channel_table));
/* send response */
return mrcp_control_channel_add_respond(agent->vtable,channel,answer,TRUE);
}
static apt_bool_t mrcp_client_message_handler(mrcp_connection_t *connection, mrcp_message_t *message, apt_message_status_e status)
{
if(status == APT_MESSAGE_STATUS_COMPLETE) {
/* message is completely parsed */
mrcp_control_channel_t *channel;
apt_str_t identifier;
apt_id_resource_generate(&message->channel_id.session_id,&message->channel_id.resource_name,'@',&identifier,message->pool);
channel = mrcp_connection_channel_find(connection,&identifier);
if(channel) {
mrcp_connection_agent_t *agent = connection->agent;
if(message->start_line.message_type == MRCP_MESSAGE_TYPE_RESPONSE) {
if(!channel->active_request ||
channel->active_request->start_line.request_id != message->start_line.request_id) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_WARNING,channel->log_obj,"Unexpected MRCP Response "APT_SIDRES_FMT" [%d]",
MRCP_MESSAGE_SIDRES(message),
message->start_line.request_id);
return FALSE;
}
if(channel->request_timer) {
apt_timer_kill(channel->request_timer);
}
channel->active_request = NULL;
}
mrcp_connection_message_receive(agent->vtable,channel,message);
}
else {
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Failed to Find Channel "APT_SIDRES_FMT" in Connection %s [%d]",
MRCP_MESSAGE_SIDRES(message),
connection->id,
apr_hash_count(connection->channel_table));
}
}
return TRUE;
}
static apt_bool_t mrcp_client_agent_channel_modify(mrcp_connection_agent_t *agent, mrcp_control_channel_t *channel, mrcp_control_descriptor_t *descriptor)
{
apt_bool_t status = TRUE;
if(descriptor->port) {
if(!channel->connection) {
mrcp_connection_t *connection = NULL;
apt_id_resource_generate(&descriptor->session_id,&descriptor->resource_name,'@',&channel->identifier,channel->pool);
/* no connection yet */
if(descriptor->connection_type == MRCP_CONNECTION_TYPE_EXISTING) {
/* try to find existing connection */
connection = mrcp_client_agent_connection_find(agent,descriptor);
if(!connection) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_WARNING,channel->log_obj,"Found No Existing TCP/MRCPv2 Connection");
}
}
if(!connection) {
/* create new connection */
connection = mrcp_client_agent_connection_create(agent,descriptor);
if(!connection) {
apt_obj_log(APT_LOG_MARK,APT_PRIO_WARNING,channel->log_obj,"Failed to Establish TCP/MRCPv2 Connection");
}
}
if(connection) {
mrcp_connection_channel_add(connection,channel);
apt_obj_log(APT_LOG_MARK,APT_PRIO_INFO,channel->log_obj,"Add Control Channel <%s> %s [%d]",
channel->identifier.buf,
connection->id,
apr_hash_count(connection->channel_table));
if(descriptor->connection_type == MRCP_CONNECTION_TYPE_NEW) {
/* set connection type to existing for the next offers / if any */
descriptor->connection_type = MRCP_CONNECTION_TYPE_EXISTING;
}
}
else {
descriptor->port = 0;
status = FALSE;
}
}
}
/* send response */
return mrcp_control_channel_modify_respond(agent->vtable,channel,descriptor,status);
}
static mrcp_control_channel_t* mrcp_connection_channel_associate(mrcp_connection_agent_t *agent, mrcp_connection_t *connection, const mrcp_message_t *message)
{
apt_str_t identifier;
mrcp_control_channel_t *channel;
if(!connection || !message) {
return NULL;
}
apt_id_resource_generate(&message->channel_id.session_id,&message->channel_id.resource_name,'@',&identifier,connection->pool);
channel = mrcp_connection_channel_find(connection,&identifier);
if(!channel) {
channel = mrcp_connection_channel_find(agent->null_connection,&identifier);
if(channel) {
mrcp_connection_channel_remove(agent->null_connection,channel);
mrcp_connection_channel_add(connection,channel);
apt_log(APT_PRIO_INFO,"Move Control Channel <%s> to Connection [%d]",
channel->identifier.buf,
apr_hash_count(connection->channel_table));
}
}
return channel;
}
static apt_bool_t mrcp_client_message_handler(void *obj, mrcp_message_t *message, mrcp_stream_result_e result)
{
if(result == MRCP_STREAM_MESSAGE_COMPLETE) {
/* message is completely parsed */
mrcp_connection_t *connection = obj;
mrcp_control_channel_t *channel;
apt_str_t identifier;
apt_id_resource_generate(&message->channel_id.session_id,&message->channel_id.resource_name,'@',&identifier,message->pool);
channel = mrcp_connection_channel_find(connection,&identifier);
if(channel) {
mrcp_connection_agent_t *agent = connection->agent;
mrcp_connection_message_receive(agent->vtable,channel,message);
}
else {
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Failed to Find Channel <%s@%s>",
message->channel_id.session_id.buf,
message->channel_id.resource_name.buf);
}
}
return TRUE;
}
static mrcp_control_channel_t* mrcp_connection_channel_associate(mrcp_connection_agent_t *agent, mrcp_connection_t *connection, const mrcp_message_t *message)
{
apt_str_t identifier;
mrcp_control_channel_t *channel;
if(!connection || !message) {
return NULL;
}
apt_id_resource_generate(&message->channel_id.session_id,&message->channel_id.resource_name,'@',&identifier,connection->pool);
channel = mrcp_connection_channel_find(connection,&identifier);
if(!channel) {
channel = apr_hash_get(agent->pending_channel_table,identifier.buf,identifier.length);
if(channel) {
apr_hash_set(agent->pending_channel_table,identifier.buf,identifier.length,NULL);
mrcp_connection_channel_add(connection,channel);
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Assign Control Channel <%s> to Connection %s [%d] -> [%d]",
channel->identifier.buf,
connection->id,
apr_hash_count(agent->pending_channel_table),
apr_hash_count(connection->channel_table));
}
}
return channel;
}
static apt_bool_t mrcp_client_agent_messsage_receive(mrcp_connection_agent_t *agent, mrcp_connection_t *connection)
{
char buffer[MRCP_MESSAGE_MAX_SIZE];
apt_bool_t more_messages_on_buffer = FALSE;
apr_status_t status;
apt_text_stream_t text_stream;
mrcp_message_t *message;
if(!connection || !connection->sock) {
return FALSE;
}
text_stream.text.buf = buffer;
text_stream.text.length = sizeof(buffer)-1;
status = apr_socket_recv(connection->sock, text_stream.text.buf, &text_stream.text.length);
if(status == APR_EOF || text_stream.text.length == 0) {
apt_log(APT_PRIO_NOTICE,"TCP/MRCPv2 Connection Disconnected");
apr_pollset_remove(agent->pollset,&connection->sock_pfd);
apr_socket_close(connection->sock);
connection->sock = NULL;
// agent->vtable->on_disconnect(agent,connection);
return TRUE;
}
text_stream.text.buf[text_stream.text.length] = '\0';
text_stream.pos = text_stream.text.buf;
apt_log(APT_PRIO_INFO,"Receive MRCPv2 Message size=%lu\n%s",text_stream.text.length,text_stream.text.buf);
if(!connection->access_count) {
return FALSE;
}
do {
message = mrcp_message_create(connection->pool);
if(mrcp_message_parse(agent->resource_factory,message,&text_stream) == TRUE) {
mrcp_control_channel_t *channel;
apt_str_t identifier;
apt_id_resource_generate(&message->channel_id.session_id,&message->channel_id.resource_name,'@',&identifier,connection->pool);
channel = mrcp_connection_channel_find(connection,&identifier);
if(channel) {
mrcp_connection_message_receive(agent->vtable,channel,message);
}
else {
apt_log(APT_PRIO_WARNING,"Failed to Find Channel <%s@%s>",
message->channel_id.session_id.buf,
message->channel_id.resource_name.buf);
}
}
else {
apt_log(APT_PRIO_WARNING,"Failed to Parse MRCPv2 Message");
if(message->start_line.version == MRCP_VERSION_2) {
/* assume that at least message length field is valid */
if(message->start_line.length <= text_stream.text.length) {
/* skip to the end of the message */
text_stream.pos = text_stream.text.buf + message->start_line.length;
}
else {
/* skip to the end of the buffer (support incomplete) */
text_stream.pos = text_stream.text.buf + text_stream.text.length;
}
}
}
more_messages_on_buffer = FALSE;
if(text_stream.text.length > (apr_size_t)(text_stream.pos - text_stream.text.buf)) {
/* there are more MRCPv2 messages to signal */
more_messages_on_buffer = TRUE;
text_stream.text.length -= text_stream.pos - text_stream.text.buf;
text_stream.text.buf = text_stream.pos;
apt_log(APT_PRIO_DEBUG,"Saving Remaining Buffer for Next Message");
}
}
while(more_messages_on_buffer);
return TRUE;
}
