public void GetRtspMessageRequest(string requestLine, RtspRequest.RequestType requestType)
{
RtspMessage oneMessage = RtspMessage.GetRtspMessage(requestLine);
Assert.IsInstanceOfType(typeof(RtspRequest), oneMessage);
RtspRequest oneRequest = oneMessage as RtspRequest;
Assert.AreEqual(requestType, oneRequest.RequestTyped);
}
public void GetRtspMessageResponse(string requestLine, int returnCode, string returnMessage)
{
RtspMessage oneMessage = RtspMessage.GetRtspMessage(requestLine);
Assert.IsInstanceOfType(typeof(RtspResponse), oneMessage);
RtspResponse oneResponse = oneMessage as RtspResponse;
Assert.AreEqual(returnCode, oneResponse.ReturnCode);
Assert.AreEqual(returnMessage, oneResponse.ReturnMessage);
}
/// <summary>
/// Reads one message.
/// </summary>
/// <param name="commandStream">The Rtsp stream.</param>
/// <returns>Message readen</returns>
public RtspChunk ReadOneMessage(Stream commandStream)
{
if (commandStream == null)
{
throw new ArgumentNullException("commandStream");
}
Contract.EndContractBlock();
ReadingState currentReadingState = ReadingState.NewCommand;
// current decode message , create a fake new to permit compile.
RtspChunk currentMessage = null;
int size = 0;
int byteReaden = 0;
List <byte> buffer = new List <byte>(256);
string oneLine = String.Empty;
while (currentReadingState != ReadingState.End)
{
// if the system is not reading binary data.
if (currentReadingState != ReadingState.Data && currentReadingState != ReadingState.MoreInterleavedData)
{
oneLine = String.Empty;
bool needMoreChar = true;
// I do not know to make readline blocking
while (needMoreChar)
{
int currentByte = commandStream.ReadByte();
switch (currentByte)
{
case -1:
// the read is blocking, so if we got -1 it is because the client close;
currentReadingState = ReadingState.End;
needMoreChar = false;
break;
case '\n':
oneLine = ASCIIEncoding.UTF8.GetString(buffer.ToArray());
buffer.Clear();
needMoreChar = false;
break;
case '\r':
// simply ignore this
break;
case '$': // if first caracter of packet is $ it is an interleaved data packet
if (currentReadingState == ReadingState.NewCommand && buffer.Count == 0)
{
currentReadingState = ReadingState.InterleavedData;
needMoreChar = false;
}
else
{
goto default;
}
break;
default:
buffer.Add((byte)currentByte);
break;
}
}
}
switch (currentReadingState)
{
case ReadingState.NewCommand:
currentMessage = RtspMessage.GetRtspMessage(oneLine);
currentReadingState = ReadingState.Headers;
break;
case ReadingState.Headers:
string line = oneLine;
if (string.IsNullOrEmpty(line))
{
currentReadingState = ReadingState.Data;
((RtspMessage)currentMessage).InitialiseDataFromContentLength();
}
else
{
((RtspMessage)currentMessage).AddHeader(line);
}
break;
case ReadingState.Data:
if (currentMessage.Data.Length > 0)
{
// Read the remaning data
byteReaden += commandStream.Read(currentMessage.Data, byteReaden,
currentMessage.Data.Length - byteReaden);
//_logger.Debug(CultureInfo.InvariantCulture, "Readen {0} byte of data", byteReaden);
}
// if we haven't read all go there again else go to end.
if (byteReaden >= currentMessage.Data.Length)
{
currentReadingState = ReadingState.End;
}
break;
case ReadingState.InterleavedData:
currentMessage = new RtspData();
((RtspData)currentMessage).Channel = commandStream.ReadByte();
size = (commandStream.ReadByte() << 8) + commandStream.ReadByte();
currentMessage.Data = new byte[size];
currentReadingState = ReadingState.MoreInterleavedData;
break;
case ReadingState.MoreInterleavedData:
// apparently non blocking
byteReaden += commandStream.Read(currentMessage.Data, byteReaden, size - byteReaden);
if (byteReaden < size)
{
currentReadingState = ReadingState.MoreInterleavedData;
}
else
{
currentReadingState = ReadingState.End;
}
break;
default:
break;
}
}
if (currentMessage != null)
{
currentMessage.SourcePort = this;
}
return(currentMessage);
}