1. Sessions of both sides Client Server MediaSession ServerMediaSession
RTSPClient
ServerMediaSubSession
OpenRTSP
RTSPServer
playCommon
testOnDemandMediaServer
Programmes for testing

2. 1. RTSPClient

3. Functions in RTSPClient.cpp
static RTSPClient* createNew
char* sendOptionsCmd //send + get
char* describeURL
Boolean openConnectionFromURL
Boolean sendRequest
Boolean getResponse
Boolean setupMediaSubsession
Boolean playMediaSession
Boolean pauseMediaSession
Boolean teardownMediaSession

4. class MediaSession class MediaSubsession class MediaSubsessionIterator

5. A data structure that represents a session that consists of potentially multiple (audio and/or video) sub-sessions
(This data structure is used for media *receivers* - i.e., clients.
For media streamers, use "ServerMediaSession" instead.)

6. MediaSession MediaSession – To parse the sdpdescription in detail.
BooleanMediaSession ::initiateByMediaType
(char const* mimeType,
MediaSubsession*& resultSubsession,
int useSpecialRTPoffset) {
subsession->initiate }

7. MediaSubsession Boolean MediaSubsession::initiate
(doing the similar stuffs as testMP3Receiver.cpp)
// Creates a "RTPSource" for this subsession
1> Create rtpSocket
2> Create rtcpSocket
3> Create RTPSource
4> Create RTCPIntance

8. 3. testProgrommes for client

9. playCommon.cpp BasicTaskScheduler::createNew();
Initial parameters according to the parameters when executing openRTSP
createClient
which is executing RTSPClient::CreatNew()
getOptionsResponse
which is executing RTSPClient::sendOptionsCmd()
getSDPDescriptionFromURL [which is executing RTSPClient::describeURL()
MediaSession::createNew(*env, sdpDescription);
subsession->initiate
setup the "RTPSource"s for the session
FileSink::createNew
Create output files
StartPlayingStreams()
which is executing RTSPClient::playMediaSubsession()
env->taskScheduler().doEventLoop(); // does not return