/* Receive MRCP message through TCP/MRCPv2 connection */
static apt_bool_t mrcp_client_poller_signal_process(void *obj, const apr_pollfd_t *descriptor)
{
mrcp_connection_agent_t *agent = obj;
mrcp_connection_t *connection = descriptor->client_data;
apr_status_t status;
apr_size_t offset;
apr_size_t length;
apt_text_stream_t *stream;
mrcp_message_t *message;
apt_message_status_e msg_status;
if(!connection || !connection->sock) {
return FALSE;
}
stream = &connection->rx_stream;
/* calculate offset remaining from the previous receive / if any */
offset = stream->pos - stream->text.buf;
/* calculate available length */
length = connection->rx_buffer_size - offset;
status = apr_socket_recv(connection->sock,stream->pos,&length);
if(status == APR_EOF || length == 0) {
apt_pollset_t *pollset = apt_poller_task_pollset_get(agent->task);
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"TCP/MRCPv2 Peer Disconnected %s",connection->id);
if(pollset) {
apt_pollset_remove(pollset,&connection->sock_pfd);
}
apr_socket_close(connection->sock);
connection->sock = NULL;
mrcp_client_agent_disconnect_raise(agent,connection);
return TRUE;
}
/* calculate actual length of the stream */
stream->text.length = offset + length;
stream->pos[length] = '\0';
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Receive MRCPv2 Stream %s [%"APR_SIZE_T_FMT" bytes]\n%.*s",
connection->id,
length,
connection->verbose == TRUE ? length : 0,
stream->pos);
/* reset pos */
apt_text_stream_reset(stream);
do {
msg_status = mrcp_parser_run(connection->parser,stream,&message);
if(mrcp_client_message_handler(connection,message,msg_status) == FALSE) {
return FALSE;
}
}
while(apt_text_is_eos(stream) == FALSE);
/* scroll remaining stream */
apt_text_stream_scroll(stream);
return TRUE;
}
static apt_bool_t mrcp_unirtsp_on_announce_response(mrcp_unirtsp_agent_t *agent, mrcp_unirtsp_session_t *session, rtsp_message_t *message, const char *resource_name)
{
mrcp_message_t *mrcp_message = NULL;
if(!session || !resource_name) {
return FALSE;
}
if(rtsp_header_property_check(&message->header,RTSP_HEADER_FIELD_CONTENT_TYPE) == TRUE &&
message->header.content_type == RTSP_CONTENT_TYPE_MRCP &&
rtsp_header_property_check(&message->header,RTSP_HEADER_FIELD_CONTENT_LENGTH) == TRUE &&
message->header.content_length > 0) {
apt_text_stream_t text_stream;
mrcp_parser_t *parser;
apt_str_t resource_name_str;
text_stream.text = message->body;
apt_text_stream_reset(&text_stream);
apt_string_set(&resource_name_str,resource_name);
parser = mrcp_parser_create(agent->sig_agent->resource_factory,session->mrcp_session->pool);
mrcp_parser_resource_set(parser,&resource_name_str);
if(mrcp_parser_run(parser,&text_stream,&mrcp_message) == APT_MESSAGE_STATUS_COMPLETE) {
mrcp_message->channel_id.session_id = message->header.session_id;
}
else {
/* error case */
apt_log(RTSP_LOG_MARK,APT_PRIO_WARNING,"Failed to Parse MRCPv1 Message");
}
}
else {
/* error case */
apt_log(RTSP_LOG_MARK,APT_PRIO_WARNING,"Failed to Determine MRCPv1 Message Content");
}
if(!mrcp_message) {
if(!session->mrcp_message) {
return FALSE;
}
mrcp_message = mrcp_response_create(session->mrcp_message,session->mrcp_session->pool);
mrcp_message->start_line.status_code = MRCP_STATUS_CODE_METHOD_FAILED;
}
if(session->mrcp_message && mrcp_message->start_line.request_id == session->mrcp_message->start_line.request_id) {
session->mrcp_message = NULL;
}
mrcp_session_control_response(session->mrcp_session,mrcp_message);
return TRUE;
}
/** Walk through MRCP stream and invoke message handler for each parsed message */
MRCP_DECLARE(apt_bool_t) mrcp_stream_walk(mrcp_parser_t *parser, apt_text_stream_t *stream, mrcp_message_handler_f handler, void *obj)
{
mrcp_stream_result_e result;
if(parser->skip_lf == TRUE) {
/* skip <LF> occurred as a result of message segmentation between <CR> and <LF> */
apt_text_char_skip(stream,APT_TOKEN_LF);
parser->skip_lf = FALSE;
}
do {
result = mrcp_parser_run(parser,stream);
if(result == MRCP_STREAM_MESSAGE_COMPLETE) {
/* message is completely parsed */
apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Parsed MRCP Message [%lu]", stream->pos - stream->text.buf);
/* invoke message handler */
handler(obj,parser->message,result);
}
else if(result == MRCP_STREAM_MESSAGE_TRUNCATED) {
/* message is partially parsed, to be continued */
apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Truncated MRCP Message [%lu]", stream->pos - stream->text.buf);
/* prepare stream for further processing */
if(apt_text_stream_scroll(stream) == TRUE) {
apt_log(APT_LOG_MARK,APT_PRIO_DEBUG,"Scroll MRCP Stream", stream->text.buf);
}
return TRUE;
}
else if(result == MRCP_STREAM_MESSAGE_INVALID){
/* error case */
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Failed to Parse MRCP Message");
/* invoke message handler */
handler(obj,parser->message,result);
/* reset stream pos */
stream->pos = stream->text.buf;
return FALSE;
}
}
while(apt_text_is_eos(stream) == FALSE);
/* reset stream pos */
stream->pos = stream->text.buf;
return TRUE;
}
static apt_bool_t mrcp_unirtsp_session_announce(mrcp_unirtsp_agent_t *agent, mrcp_unirtsp_session_t *session, rtsp_message_t *message)
{
const char *resource_name = mrcp_name_get_by_rtsp_name(
agent->config->resource_map,
message->start_line.common.request_line.resource_name);
apt_bool_t status = TRUE;
if(session && resource_name &&
rtsp_header_property_check(&message->header.property_set,RTSP_HEADER_FIELD_CONTENT_TYPE) == TRUE &&
message->header.content_type == RTSP_CONTENT_TYPE_MRCP &&
rtsp_header_property_check(&message->header.property_set,RTSP_HEADER_FIELD_CONTENT_LENGTH) == TRUE &&
message->header.content_length > 0) {
apt_text_stream_t text_stream;
mrcp_parser_t *parser;
apt_str_t resource_name_str;
text_stream.text = message->body;
text_stream.pos = text_stream.text.buf;
apt_string_set(&resource_name_str,resource_name);
parser = mrcp_parser_create(agent->sig_agent->resource_factory,session->mrcp_session->pool);
mrcp_parser_resource_name_set(parser,&resource_name_str);
if(mrcp_parser_run(parser,&text_stream) == MRCP_STREAM_MESSAGE_COMPLETE) {
mrcp_message_t *mrcp_message = mrcp_parser_message_get(parser);
mrcp_message->channel_id.session_id = message->header.session_id;
status = mrcp_session_control_request(session->mrcp_session,mrcp_message);
}
else {
/* error response */
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Failed to Parse MRCPv1 Message");
status = FALSE;
}
}
else {
/* error response */
status = FALSE;
}
return status;
}