//format a DESCRIBE, SETUP, PLAY or PAUSE on a session
//YOUR COMMAND MUST BE FORMATTED ACCORDINGLY
//sCtrl contains a control string if needed, formating the REQUEST as server_url/service_name/sCtrl
GF_EXPORT
GF_Err gf_rtsp_send_command(GF_RTSPSession *sess, GF_RTSPCommand *com)
{
GF_Err e;
char *sCtrl;
const char *rad;
u32 size;
char buffer[1024], *result, *body;
if (!com || !com->method) return GF_BAD_PARAM;
sCtrl = com->ControlString;
//NB: OPTIONS is not sent this way
if (strcmp(com->method, GF_RTSP_DESCRIBE)
&& strcmp(com->method, GF_RTSP_ANNOUNCE)
&& strcmp(com->method, GF_RTSP_GET_PARAMETER)
&& strcmp(com->method, GF_RTSP_SET_PARAMETER)
&& strcmp(com->method, GF_RTSP_SETUP)
&& strcmp(com->method, GF_RTSP_PLAY)
&& strcmp(com->method, GF_RTSP_PAUSE)
&& strcmp(com->method, GF_RTSP_RECORD)
&& strcmp(com->method, GF_RTSP_REDIRECTE)
&& strcmp(com->method, GF_RTSP_TEARDOWN)
&& strcmp(com->method, GF_RTSP_OPTIONS)
) return GF_BAD_PARAM;
//check the state machine
if (strcmp(com->method, GF_RTSP_PLAY)
&& strcmp(com->method, GF_RTSP_PAUSE)
&& strcmp(com->method, GF_RTSP_RECORD)
&& sess->RTSP_State != GF_RTSP_STATE_INIT)
return GF_SERVICE_ERROR;
//aggregation is ONLY for the same request - unclear in RFC2326 ...
//it is often mentioned "queued requests" at the server, like 3 PLAYS
//and a PAUSE ....
/*
else if (sess->RTSP_State == GF_RTSP_STATE_WAIT_FOR_CONTROL
&& strcmp(com->method, sess->RTSPLastRequest))
&& strcmp(com->method, GF_RTSP_OPTIONS))
return GF_BAD_PARAM;
*/
//OPTIONS must have a parameter string
if (!strcmp(com->method, GF_RTSP_OPTIONS) && !sCtrl) return GF_BAD_PARAM;
//update sequence number
sess->CSeq += 1;
sess->NbPending += 1;
if (!strcmp(com->method, GF_RTSP_OPTIONS)) {
sprintf(buffer, "OPTIONS %s %s\r\n", sCtrl, GF_RTSP_VERSION);
} else {
rad = (sess->ConnectionType == GF_SOCK_TYPE_TCP) ? "rtsp" : "rtspu";
if (sCtrl) {
//if both server and service names are included in the control, just
//use the control
if (strstr(sCtrl, sess->Server) && strstr(sCtrl, sess->Service)) {
sprintf(buffer, "%s %s %s\r\n", com->method, sCtrl, GF_RTSP_VERSION);
}
//if service is specified in ctrl, do not rewrite it
else if (strstr(sCtrl, sess->Service)) {
sprintf(buffer, "%s %s://%s:%d/%s %s\r\n", com->method, rad, sess->Server, sess->Port, sCtrl, GF_RTSP_VERSION);
}
else if (!strnicmp(sCtrl, "rtsp", 4)) {
sprintf(buffer, "%s %s %s\r\n", com->method, sCtrl, GF_RTSP_VERSION);
}
//otherwise rewrite full URL
else {
sprintf(buffer, "%s %s://%s/%s/%s %s\r\n", com->method, rad, sess->Server, sess->Service, sCtrl, GF_RTSP_VERSION);
// sprintf(buffer, "%s %s://%s:%d/%s/%s %s\r\n", com->method, rad, sess->Server, sess->Port, sess->Service, sCtrl, GF_RTSP_VERSION);
}
} else {
sprintf(buffer, "%s %s://%s:%d/%s %s\r\n", com->method, rad, sess->Server, sess->Port, sess->Service, GF_RTSP_VERSION);
}
}
//Body on ANNOUNCE, GET_PARAMETER, SET_PARAMETER ONLY
body = NULL;
if (strcmp(com->method, GF_RTSP_ANNOUNCE)
&& strcmp(com->method, GF_RTSP_GET_PARAMETER)
&& strcmp(com->method, GF_RTSP_SET_PARAMETER)
) {
//this is an error, but don't say anything
if (com->body) {
body = com->body;
com->body = NULL;
}
}
result = NULL;
e = RTSP_WriteCommand(sess, com, (unsigned char *)buffer, (unsigned char **) &result, &size);
//restore body if needed
if (body) com->body = body;
if (e) goto exit;
GF_LOG(GF_LOG_INFO, GF_LOG_RTP, ("[RTSP] Sending Command:\n%s\n", result));
//send buffer
e = gf_rtsp_send_data(sess, result, size);
if (e) goto exit;
//update our state
if (!strcmp(com->method, GF_RTSP_RECORD)) sess->RTSP_State = GF_RTSP_STATE_WAIT_FOR_CONTROL;
else if (!strcmp(com->method, GF_RTSP_PLAY)) sess->RTSP_State = GF_RTSP_STATE_WAIT_FOR_CONTROL;
else if (!strcmp(com->method, GF_RTSP_PAUSE)) sess->RTSP_State = GF_RTSP_STATE_WAIT_FOR_CONTROL;
else sess->RTSP_State = GF_RTSP_STATE_WAITING;
//teardown invalidates the session most of the time, so we force the user to wait for the reply
//as the reply may indicate a connection-closed
strcpy(sess->RTSPLastRequest, com->method);
exit:
if (result) gf_free(result);
return e;
}
//format a DESCRIBE, SETUP, PLAY or PAUSE on a session
//YOUR COMMAND MUST BE FORMATTED ACCORDINGLY
//sCtrl contains a control string if needed, formating the REQUEST as server_url/service_name/sCtrl
M4Err RTSP_SendRequest(RTSPSession *sess, RTSPCommand *com)
{
M4Err e;
char *rad, *sCtrl;
u32 size;
char buffer[1024], *result, *body;
if (!com || !com->method) return M4BadParam;
sCtrl = com->ControlString;
//NB: OPTIONS is not sent this way
if (strcmp(com->method, RTSP_DESCRIBE)
&& strcmp(com->method, RTSP_ANNOUNCE)
&& strcmp(com->method, RTSP_GET_PARAMETER)
&& strcmp(com->method, RTSP_SET_PARAMETER)
&& strcmp(com->method, RTSP_SETUP)
&& strcmp(com->method, RTSP_PLAY)
&& strcmp(com->method, RTSP_PAUSE)
&& strcmp(com->method, RTSP_RECORD)
&& strcmp(com->method, RTSP_REDIRECT)
&& strcmp(com->method, RTSP_TEARDOWN)
&& strcmp(com->method, RTSP_OPTIONS)
) return M4BadParam;
//check the state machine
if (strcmp(com->method, RTSP_PLAY)
&& strcmp(com->method, RTSP_PAUSE)
&& strcmp(com->method, RTSP_RECORD)
&& sess->RTSP_State != RSM_Init)
return M4ServiceError;
//aggregation is ONLY for the same request - unclear in RFC2326 ...
//it is often mentioned "queued requests" at the server, like 3 PLAYS
//and a PAUSE ....
/*
else if (sess->RTSP_State == RSM_WaitForControl
&& strcmp(com->method, sess->RTSPLastRequest))
&& strcmp(com->method, RTSP_OPTIONS))
return M4BadParam;
*/
//OPTIONS must have a parameter string
if (!strcmp(com->method, RTSP_OPTIONS) && !sCtrl) return M4BadParam;
//update sequence number
sess->CSeq += 1;
sess->NbPending += 1;
if (!strcmp(com->method, RTSP_OPTIONS)) {
sprintf(buffer, "OPTIONS %s %s\r\n", sCtrl, RTSP_VERSION);
} else {
rad = (sess->ConnectionType == SK_TYPE_TCP) ? "rtsp" : "rtspu";
if (sCtrl) {
//if both server and service names are included in the control, just
//use the control
if (strstr(sCtrl, sess->Server) && strstr(sCtrl, sess->Service)) {
sprintf(buffer, "%s %s %s\r\n", com->method, sCtrl, RTSP_VERSION);
}
//if service is specified in ctrl, do not rewrite it
else if (strstr(sCtrl, sess->Service)) {
sprintf(buffer, "%s %s://%s:%d/%s %s\r\n", com->method, rad, sess->Server, sess->Port, sCtrl, RTSP_VERSION);
}
//otherwise rewrite full URL
else {
sprintf(buffer, "%s %s://%s/%s/%s %s\r\n", com->method, rad, sess->Server, sess->Service, sCtrl, RTSP_VERSION);
// sprintf(buffer, "%s %s://%s:%d/%s/%s %s\r\n", com->method, rad, sess->Server, sess->Port, sess->Service, sCtrl, RTSP_VERSION);
}
} else {
sprintf(buffer, "%s %s://%s:%d/%s %s\r\n", com->method, rad, sess->Server, sess->Port, sess->Service, RTSP_VERSION);
}
}
//Body on ANNOUNCE, GET_PARAMETER, SET_PARAMETER ONLY
body = NULL;
if (strcmp(com->method, RTSP_ANNOUNCE)
&& strcmp(com->method, RTSP_GET_PARAMETER)
&& strcmp(com->method, RTSP_SET_PARAMETER)
) {
//this is an error, but don't say anything
if (com->body) {
body = com->body;
com->body = NULL;
}
}
result = NULL;
e = RTSP_WriteCommand(sess, com, buffer, (unsigned char **) &result, &size);
//restore body if needed
if (body) com->body = body;
if (e) goto exit;
//send buffer
e = RTSP_Send(sess, result, size);
if (e) goto exit;
if (sess->rtsp_log) fprintf(sess->rtsp_log, "\n/*RTSP Send Command*/\n\n%s\n", result);
//update our state
if (!strcmp(com->method, RTSP_RECORD)) sess->RTSP_State = RSM_WaitForControl;
else if (!strcmp(com->method, RTSP_PLAY)) sess->RTSP_State = RSM_WaitForControl;
else if (!strcmp(com->method, RTSP_PAUSE)) sess->RTSP_State = RSM_WaitForControl;
else sess->RTSP_State = RSM_Waiting;
//teardown invalidates the session most of the time, so we force the user to wait for the reply
//as the reply may indicate a connection-closed
strcpy(sess->RTSPLastRequest, com->method);
exit:
if (result) free(result);
return e;
}
