/* Process outgoing RTSP request */
static apt_bool_t rtsp_client_session_request_process(rtsp_client_t *client, rtsp_client_session_t *session, rtsp_message_t *message)
{
if(!session->connection) {
/* create RTSP connection */
if(rtsp_client_connection_create(client,session) == FALSE) {
/* respond with error */
return FALSE;
}
apt_log(APT_LOG_MARK,APT_PRIO_INFO,"Add RTSP Handle "APT_PTR_FMT,session);
apr_hash_set(session->connection->handle_table,session,sizeof(session),session);
}
rtsp_client_session_url_generate(session,message);
if(session->id.length) {
message->header.session_id = session->id;
rtsp_header_property_add(&message->header.property_set,RTSP_HEADER_FIELD_SESSION_ID);
}
message->header.cseq = ++session->connection->last_cseq;
rtsp_header_property_add(&message->header.property_set,RTSP_HEADER_FIELD_CSEQ);
if(rtsp_client_message_send(client,session->connection->base,message) == FALSE) {
/* respond with error */
return FALSE;
}
return rtsp_client_request_push(session->connection,session,message);
}
static apt_bool_t mrcp_unirtsp_on_session_control(mrcp_session_t *mrcp_session, mrcp_message_t *mrcp_message)
{
mrcp_unirtsp_session_t *session = mrcp_session->obj;
mrcp_unirtsp_agent_t *agent = mrcp_session->signaling_agent->obj;
char buffer[500];
apt_text_stream_t stream;
rtsp_message_t *rtsp_message = NULL;
apt_str_t *body;
apt_text_stream_init(&stream,buffer,sizeof(buffer));
mrcp_message->start_line.version = MRCP_VERSION_1;
if(mrcp_message_generate(agent->sig_agent->resource_factory,mrcp_message,&stream) != TRUE) {
apt_log(APT_LOG_MARK,APT_PRIO_WARNING,"Failed to Generate MRCPv1 Message");
return FALSE;
}
stream.text.length = stream.pos - stream.text.buf;
if(mrcp_message->start_line.message_type == MRCP_MESSAGE_TYPE_RESPONSE) {
/* send RTSP response (OK) */
const rtsp_message_t *request = rtsp_server_session_request_get(session->rtsp_session);
if(request) {
rtsp_message = rtsp_response_create(request,RTSP_STATUS_CODE_OK,RTSP_REASON_PHRASE_OK,mrcp_session->pool);
}
}
else if(mrcp_message->start_line.message_type == MRCP_MESSAGE_TYPE_EVENT) {
/* send RTSP announce */
rtsp_message = rtsp_request_create(mrcp_session->pool);
rtsp_message->start_line.common.request_line.resource_name = rtsp_name_get_by_mrcp_name(
agent->config->resource_map,
mrcp_message->channel_id.resource_name.buf);
rtsp_message->start_line.common.request_line.method_id = RTSP_METHOD_ANNOUNCE;
}
if(!rtsp_message) {
return FALSE;
}
body = &rtsp_message->body;
body->length = mrcp_message->start_line.length;
body->buf = apr_palloc(rtsp_message->pool,body->length+1);
memcpy(body->buf,stream.text.buf,stream.text.length);
if(mrcp_message->body.length) {
memcpy(body->buf+stream.text.length,mrcp_message->body.buf,mrcp_message->body.length);
}
body->buf[body->length] = '\0';
rtsp_message->header.content_type = RTSP_CONTENT_TYPE_MRCP;
rtsp_header_property_add(&rtsp_message->header,RTSP_HEADER_FIELD_CONTENT_TYPE,rtsp_message->pool);
rtsp_message->header.content_length = body->length;
rtsp_header_property_add(&rtsp_message->header,RTSP_HEADER_FIELD_CONTENT_LENGTH,rtsp_message->pool);
rtsp_server_session_respond(agent->rtsp_server,session->rtsp_session,rtsp_message);
return TRUE;
}
/* Finally terminate RTSP session */
static apt_bool_t rtsp_server_session_do_terminate(rtsp_server_t *server, rtsp_server_session_t *session)
{
rtsp_server_connection_t *rtsp_connection = session->connection;
if(session->active_request) {
rtsp_message_t *response = rtsp_response_create(session->active_request,
RTSP_STATUS_CODE_OK,RTSP_REASON_PHRASE_OK,session->active_request->pool);
if(response) {
if(session->id.buf) {
response->header.session_id = session->id;
rtsp_header_property_add(&response->header,RTSP_HEADER_FIELD_SESSION_ID,response->pool);
}
if(rtsp_connection) {
rtsp_server_message_send(server,rtsp_connection,response);
}
}
}
apt_log(RTSP_LOG_MARK,APT_PRIO_INFO,"Remove RTSP Session " APT_SID_FMT,session->id.buf);
if(rtsp_connection) {
apr_hash_set(rtsp_connection->session_table,session->id.buf,session->id.length,NULL);
}
rtsp_server_session_destroy(session);
if(rtsp_connection && !rtsp_connection->sock) {
if(apr_hash_count(rtsp_connection->session_table) == 0) {
rtsp_server_connection_destroy(rtsp_connection);
}
}
return TRUE;
}
/* Process incoming RTSP event (request) */
static apt_bool_t rtsp_client_session_event_process(rtsp_client_t *client, rtsp_client_connection_t *rtsp_connection, rtsp_message_t *message)
{
rtsp_message_t *response = NULL;
rtsp_client_session_t *session = NULL;
if(rtsp_header_property_check(&message->header.property_set,RTSP_HEADER_FIELD_SESSION_ID) == TRUE) {
/* find existing session */
session = apr_hash_get(
rtsp_connection->session_table,
message->header.session_id.buf,
message->header.session_id.length);
}
if(session) {
response = rtsp_response_create(message,RTSP_STATUS_CODE_OK,RTSP_REASON_PHRASE_OK,message->pool);
if(rtsp_header_property_check(&message->header.property_set,RTSP_HEADER_FIELD_SESSION_ID) == TRUE) {
response->header.session_id = message->header.session_id;
rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_SESSION_ID);
}
client->vtable->on_session_event(client,session,message);
}
else {
response = rtsp_response_create(message,RTSP_STATUS_CODE_NOT_FOUND,RTSP_REASON_PHRASE_NOT_FOUND,message->pool);
}
return rtsp_client_message_send(client,rtsp_connection->base,response);
}
/** Parse RTSP header */
RTSP_DECLARE(apt_bool_t) rtsp_header_parse(rtsp_header_t *header, apt_text_stream_t *text_stream, apr_pool_t *pool)
{
apt_pair_t pair;
apt_bool_t result = FALSE;
do {
if(apt_text_header_read(text_stream,&pair) == TRUE) {
if(pair.name.length) {
/* parse header_field (name/value) */
rtsp_header_field_id id = apt_string_table_id_find(rtsp_header_string_table,RTSP_HEADER_FIELD_COUNT,&pair.name);
if(id < RTSP_HEADER_FIELD_COUNT) {
if(rtsp_header_field_parse(header,id,&pair.value,pool) == TRUE) {
rtsp_header_property_add(&header->property_set,id);
}
}
}
else {
/* empty header -> exit */
result = TRUE;
break;
}
}
}
while(apt_text_is_eos(text_stream) == FALSE);
return result;
}
/** Generate RTSP resource discovery response */
MRCP_DECLARE(rtsp_message_t*) rtsp_resource_discovery_response_generate(
const rtsp_message_t *request,
const char *ip,
const char *origin,
apr_pool_t *pool)
{
rtsp_message_t *response = rtsp_response_create(request,RTSP_STATUS_CODE_OK,RTSP_REASON_PHRASE_OK,pool);
if(response) {
apr_size_t offset = 0;
char buffer[2048];
apr_size_t size = sizeof(buffer);
if(!ip) {
ip = "0.0.0.0";
}
if(!origin) {
origin = "-";
}
buffer[0] = '\0';
offset += snprintf(buffer+offset,size-offset,
"v=0\r\n"
"o=%s 0 0 IN IP4 %s\r\n"
"s=-\r\n"
"c=IN IP4 %s\r\n"
"t=0 0\r\n"
"m=audio 0 RTP/AVP 0 8 96 101\r\n"
"a=rtpmap:0 PCMU/8000\r\n"
"a=rtpmap:8 PCMA/8000\r\n"
"a=rtpmap:96 L16/8000\r\n"
"a=rtpmap:101 telephone-event/8000\r\n",
origin,
ip,
ip);
if(offset) {
apt_string_assign_n(&response->body,buffer,offset,pool);
response->header.content_type = RTSP_CONTENT_TYPE_SDP;
rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_TYPE);
response->header.content_length = offset;
rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_LENGTH);
}
}
return response;
}
static apt_bool_t mrcp_unirtsp_session_control(mrcp_session_t *mrcp_session, mrcp_message_t *mrcp_message)
{
mrcp_unirtsp_session_t *session = mrcp_session->obj;
mrcp_unirtsp_agent_t *agent = mrcp_session->signaling_agent->obj;
char buffer[2000];
apt_text_stream_t stream;
rtsp_message_t *rtsp_message = NULL;
apt_str_t *body;
apt_text_stream_init(&stream,buffer,sizeof(buffer));
mrcp_message->start_line.version = MRCP_VERSION_1;
if(mrcp_message_generate(agent->sig_agent->resource_factory,mrcp_message,&stream) != TRUE) {
apt_log(RTSP_LOG_MARK,APT_PRIO_WARNING,"Failed to Generate MRCPv1 Message");
return FALSE;
}
stream.text.length = stream.pos - stream.text.buf;
rtsp_message = rtsp_request_create(mrcp_session->pool);
rtsp_message->start_line.common.request_line.resource_name = rtsp_name_get_by_mrcp_name(
session->rtsp_settings->resource_map,
mrcp_message->channel_id.resource_name.buf);
rtsp_message->start_line.common.request_line.method_id = RTSP_METHOD_ANNOUNCE;
body = &rtsp_message->body;
body->length = mrcp_message->start_line.length;
body->buf = apr_palloc(rtsp_message->pool,body->length+1);
memcpy(body->buf,stream.text.buf,stream.text.length);
if(mrcp_message->body.length) {
memcpy(body->buf+stream.text.length,mrcp_message->body.buf,mrcp_message->body.length);
}
body->buf[body->length] = '\0';
rtsp_message->header.content_type = RTSP_CONTENT_TYPE_MRCP;
rtsp_header_property_add(&rtsp_message->header,RTSP_HEADER_FIELD_CONTENT_TYPE,rtsp_message->pool);
rtsp_message->header.content_length = body->length;
rtsp_header_property_add(&rtsp_message->header,RTSP_HEADER_FIELD_CONTENT_LENGTH,rtsp_message->pool);
session->mrcp_message = mrcp_message;
rtsp_client_session_request(agent->rtsp_client,session->rtsp_session,rtsp_message);
return TRUE;
}
/* Process outgoing RTSP response */
static apt_bool_t rtsp_server_session_response_process(rtsp_server_t *server, rtsp_server_session_t *session, rtsp_message_t *message)
{
if(message->start_line.message_type == RTSP_MESSAGE_TYPE_REQUEST) {
/* RTSP ANNOUNCE request (asynch event) */
message->start_line.common.request_line.url = session->url;
if(session->id.buf) {
message->header.session_id = session->id;
rtsp_header_property_add(&message->header.property_set,RTSP_HEADER_FIELD_SESSION_ID);
}
rtsp_server_message_send(server,session->connection->base,message);
return TRUE;
}
if(session->id.buf) {
message->header.session_id = session->id;
rtsp_header_property_add(&message->header.property_set,RTSP_HEADER_FIELD_SESSION_ID);
}
rtsp_server_message_send(server,session->connection->base,message);
if(session->active_request) {
rtsp_message_t *request = session->active_request;
if(request->start_line.common.request_line.method_id == RTSP_METHOD_SETUP) {
if(message->start_line.common.status_line.status_code != RTSP_STATUS_CODE_OK) {
rtsp_server_session_terminate_request(server,session);
}
}
else if(request->start_line.common.request_line.method_id == RTSP_METHOD_DESCRIBE) {
rtsp_server_session_terminate_request(server,session);
}
}
session->active_request = apt_list_pop_front(session->request_queue);
if(session->active_request) {
rtsp_server_session_message_handle(server,session,session->active_request);
}
return TRUE;
}
/* Process outgoing RTSP response */
static apt_bool_t rtsp_server_session_response_process(rtsp_server_t *server, rtsp_server_session_t *session, rtsp_message_t *message)
{
apt_bool_t terminate = FALSE;
rtsp_message_t *request = NULL;
if(message->start_line.message_type == RTSP_MESSAGE_TYPE_REQUEST) {
/* RTSP ANNOUNCE request (asynch event) */
const char *resource_name = message->start_line.common.request_line.resource_name;
if(resource_name) {
request = apr_hash_get(session->resource_table,resource_name,APR_HASH_KEY_STRING);
}
if(!request) {
return FALSE;
}
message->start_line.common.request_line.url = request->start_line.common.request_line.url;
message->header.cseq = session->last_cseq;
rtsp_header_property_add(&message->header,RTSP_HEADER_FIELD_CSEQ,message->pool);
if(session->id.buf) {
message->header.session_id = session->id;
rtsp_header_property_add(&message->header,RTSP_HEADER_FIELD_SESSION_ID,message->pool);
}
rtsp_server_message_send(server,session->connection,message);
return TRUE;
}
if(!session->active_request) {
/* unexpected response */
return FALSE;
}
request = session->active_request;
if(request->start_line.common.request_line.method_id == RTSP_METHOD_DESCRIBE) {
terminate = TRUE;
}
else {
if(session->id.buf) {
message->header.session_id = session->id;
rtsp_header_property_add(&message->header,RTSP_HEADER_FIELD_SESSION_ID,message->pool);
}
if(request->start_line.common.request_line.method_id == RTSP_METHOD_SETUP) {
if(message->start_line.common.status_line.status_code == RTSP_STATUS_CODE_OK) {
/* add resource */
const char *resource_name = request->start_line.common.request_line.resource_name;
apr_hash_set(session->resource_table,resource_name,APR_HASH_KEY_STRING,request);
}
else if(apr_hash_count(session->resource_table) == 0) {
terminate = TRUE;
}
}
}
session->last_cseq = message->header.cseq;
rtsp_server_message_send(server,session->connection,message);
if(terminate == TRUE) {
session->active_request = NULL;
rtsp_server_session_terminate_request(server,session);
return TRUE;
}
session->active_request = apt_list_pop_front(session->request_queue);
if(session->active_request) {
rtsp_server_session_message_handle(server,session,session->active_request);
}
return TRUE;
}
/** Generate RTSP response by MRCP descriptor */
MRCP_DECLARE(rtsp_message_t*) rtsp_response_generate_by_mrcp_descriptor(const rtsp_message_t *request, const mrcp_session_descriptor_t *descriptor, const apr_table_t *resource_map, apr_pool_t *pool)
{
rtsp_message_t *response = NULL;
switch(descriptor->status) {
case MRCP_SESSION_STATUS_OK:
response = rtsp_response_create(request,RTSP_STATUS_CODE_OK,RTSP_REASON_PHRASE_OK,pool);
break;
case MRCP_SESSION_STATUS_NO_SUCH_RESOURCE:
response = rtsp_response_create(request,RTSP_STATUS_CODE_NOT_FOUND,RTSP_REASON_PHRASE_NOT_FOUND,pool);
break;
case MRCP_SESSION_STATUS_UNACCEPTABLE_RESOURCE:
case MRCP_SESSION_STATUS_UNAVAILABLE_RESOURCE:
response = rtsp_response_create(request,RTSP_STATUS_CODE_NOT_ACCEPTABLE,RTSP_REASON_PHRASE_NOT_ACCEPTABLE,pool);
break;
case MRCP_SESSION_STATUS_ERROR:
response = rtsp_response_create(request,RTSP_STATUS_CODE_INTERNAL_SERVER_ERROR,RTSP_REASON_PHRASE_INTERNAL_SERVER_ERROR,pool);
break;
}
if(!response) {
return NULL;
}
if(descriptor->status == MRCP_SESSION_STATUS_OK) {
apr_size_t i;
apr_size_t count;
apr_size_t audio_index = 0;
mpf_rtp_media_descriptor_t *audio_media;
apr_size_t video_index = 0;
mpf_rtp_media_descriptor_t *video_media;
apr_size_t offset = 0;
char buffer[2048];
apr_size_t size = sizeof(buffer);
const char *ip = descriptor->ext_ip.buf ? descriptor->ext_ip.buf : (descriptor->ip.buf ? descriptor->ip.buf : "0.0.0.0");
buffer[0] = '\0';
offset += snprintf(buffer+offset,size-offset,
"v=0\r\n"
"o=%s 0 0 IN IP4 %s\r\n"
"s=-\r\n"
"c=IN IP4 %s\r\n"
"t=0 0\r\n",
descriptor->origin.buf ? descriptor->origin.buf : "-",
ip,
ip);
count = mrcp_session_media_count_get(descriptor);
for(i=0; i<count; i++) {
audio_media = mrcp_session_audio_media_get(descriptor,audio_index);
if(audio_media && audio_media->id == i) {
/* generate audio media */
rtsp_transport_t *transport;
audio_index++;
offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,audio_media);
transport = &response->header.transport;
transport->server_port_range.min = audio_media->port;
transport->server_port_range.max = audio_media->port+1;
transport->client_port_range = request->header.transport.client_port_range;
continue;
}
video_media = mrcp_session_video_media_get(descriptor,video_index);
if(video_media && video_media->id == i) {
/* generate video media */
video_index++;
offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,video_media);
continue;
}
}
/* ok */
response->header.transport.protocol = RTSP_TRANSPORT_RTP;
response->header.transport.profile = RTSP_PROFILE_AVP;
response->header.transport.delivery = RTSP_DELIVERY_UNICAST;
rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_TRANSPORT);
if(offset) {
apt_string_assign_n(&response->body,buffer,offset,pool);
response->header.content_type = RTSP_CONTENT_TYPE_SDP;
rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_TYPE);
response->header.content_length = offset;
rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_LENGTH);
}
}
return response;
}
/** Generate RTSP request by MRCP descriptor */
MRCP_DECLARE(rtsp_message_t*) rtsp_request_generate_by_mrcp_descriptor(const mrcp_session_descriptor_t *descriptor, const apr_table_t *resource_map, apr_pool_t *pool)
{
apr_size_t i;
apr_size_t count;
apr_size_t audio_index = 0;
mpf_rtp_media_descriptor_t *audio_media;
apr_size_t video_index = 0;
mpf_rtp_media_descriptor_t *video_media;
apr_size_t offset = 0;
char buffer[2048];
apr_size_t size = sizeof(buffer);
rtsp_message_t *request;
const char *ip = descriptor->ext_ip.buf ? descriptor->ext_ip.buf : (descriptor->ip.buf ? descriptor->ip.buf : "0.0.0.0");
request = rtsp_request_create(pool);
request->start_line.common.request_line.resource_name = rtsp_name_get_by_mrcp_name(
resource_map,
descriptor->resource_name.buf);
if(descriptor->resource_state != TRUE) {
request->start_line.common.request_line.method_id = RTSP_METHOD_TEARDOWN;
return request;
}
request->start_line.common.request_line.method_id = RTSP_METHOD_SETUP;
buffer[0] = '\0';
offset += snprintf(buffer+offset,size-offset,
"v=0\r\n"
"o=%s 0 0 IN IP4 %s\r\n"
"s=-\r\n"
"c=IN IP4 %s\r\n"
"t=0 0\r\n",
descriptor->origin.buf ? descriptor->origin.buf : "-",
ip,
ip);
count = mrcp_session_media_count_get(descriptor);
for(i=0; i<count; i++) {
audio_media = mrcp_session_audio_media_get(descriptor,audio_index);
if(audio_media && audio_media->id == i) {
/* generate audio media */
audio_index++;
offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,audio_media);
request->header.transport.client_port_range.min = audio_media->port;
request->header.transport.client_port_range.max = audio_media->port+1;
continue;
}
video_media = mrcp_session_video_media_get(descriptor,video_index);
if(video_media && video_media->id == i) {
/* generate video media */
video_index++;
offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,video_media);
continue;
}
}
request->header.transport.protocol = RTSP_TRANSPORT_RTP;
request->header.transport.profile = RTSP_PROFILE_AVP;
request->header.transport.delivery = RTSP_DELIVERY_UNICAST;
rtsp_header_property_add(&request->header.property_set,RTSP_HEADER_FIELD_TRANSPORT);
if(offset) {
apt_string_assign_n(&request->body,buffer,offset,pool);
request->header.content_type = RTSP_CONTENT_TYPE_SDP;
rtsp_header_property_add(&request->header.property_set,RTSP_HEADER_FIELD_CONTENT_TYPE);
request->header.content_length = offset;
rtsp_header_property_add(&request->header.property_set,RTSP_HEADER_FIELD_CONTENT_LENGTH);
}
return request;
}
/** Generate RTSP response by MRCP descriptor */
MRCP_DECLARE(rtsp_message_t*) rtsp_response_generate_by_mrcp_descriptor(const rtsp_message_t *request, const mrcp_session_descriptor_t *descriptor, apr_pool_t *pool)
{
apr_size_t i;
apr_size_t count;
apr_size_t audio_index = 0;
mpf_rtp_media_descriptor_t *audio_media;
apr_size_t video_index = 0;
mpf_rtp_media_descriptor_t *video_media;
apr_size_t offset = 0;
char buffer[2048];
apr_size_t size = sizeof(buffer);
rtsp_message_t *response;
if(descriptor->resource_state != TRUE) {
response = rtsp_response_create(request,RTSP_STATUS_CODE_NOT_FOUND,RTSP_REASON_PHRASE_NOT_FOUND,pool);
return response;
}
response = rtsp_response_create(request,RTSP_STATUS_CODE_OK,RTSP_REASON_PHRASE_OK,pool);
if(!response) {
return NULL;
}
buffer[0] = '\0';
offset += snprintf(buffer+offset,size-offset,
"v=0\r\n"
"o=%s 0 0 IN IP4 %s\r\n"
"s=-\r\n"
"c=IN IP4 %s\r\n"
"t=0 0\r\n",
descriptor->origin.buf ? descriptor->origin.buf : "-",
descriptor->ip.buf ? descriptor->ip.buf : "0",
descriptor->ip.buf ? descriptor->ip.buf : "0");
count = mrcp_session_media_count_get(descriptor);
for(i=0; i<count; i++) {
audio_media = mrcp_session_audio_media_get(descriptor,audio_index);
if(audio_media && audio_media->base.id == i) {
/* generate audio media */
audio_index++;
offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,audio_media);
continue;
}
video_media = mrcp_session_video_media_get(descriptor,video_index);
if(video_media && video_media->base.id == i) {
/* generate video media */
video_index++;
offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,video_media);
continue;
}
}
/* ok */
response->header.transport.profile = RTSP_PROFILE_RTP_AVP;
response->header.transport.delivery = RTSP_DELIVERY_UNICAST;
rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_TRANSPORT);
if(offset) {
apt_string_assign_n(&response->body,buffer,offset,pool);
response->header.content_type = RTSP_CONTENT_TYPE_SDP;
rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_TYPE);
response->header.content_length = offset;
rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_LENGTH);
}
return response;
}
