private void ProccessData_Len(_SocketState state)
{
long dataAvailable = this.AvailableInBuffer;
if (dataAvailable > 0)
{
byte[] data = new byte[dataAvailable];
// Ensure that we don't get more data than needed !!!
if (dataAvailable > (state.LenthToRead - state.ReadCount))
{
data = new byte[state.LenthToRead - state.ReadCount];
}
int countRecieved = this.ReceiveFromFuffer(data);
// Increase readed count
state.ReadCount += data.Length;
// Message size exceeded, just don't store it
if (state.ReadCount < state.MaxLength)
{
state.Stream.Write(data, 0, data.Length);
}
}
// We got all data successfully, call EndRecieve call back
if (state.ReadCount == state.LenthToRead)
{
// Message size exceeded
if (state.ReadCount > state.MaxLength)
{
if (state.Callback != null)
{
state.Callback(SocketCallBackResult.LengthExceeded, state.ReadCount, null, state.Tag);
}
}
else
{
// Logging stuff
if (m_pLogger != null)
{
m_pLogger.AddReadEntry("Big binary, readed " + state.ReadCount.ToString() + " bytes.");
}
if (state.Callback != null)
{
state.Callback(SocketCallBackResult.Ok, state.ReadCount, null, state.Tag);
}
}
}
else
{
// Recieve next bytes
byte[] buff = new byte[1024];
state.RecvBuffer = buff;
this.BeginReceive(buff, 0, buff.Length, 0, new AsyncCallback(OnRecievedData), state);
}
}
/// <summary>
/// Is called from asynchronous socket if data is recieved.
/// </summary>
/// <param name="a"></param>
private void OnRecievedData(IAsyncResult a)
{
_SocketState state = (_SocketState)a.AsyncState;
try{
// Socket is closed by session, we don't need to get data or call callback method.
// This mainlty happens when session timesout and session is ended.
if (!this.IsClosed)
{
int countReaded = this.EndReceive(a);
if (countReaded > 0)
{
this.AppendBuffer(state.RecvBuffer, countReaded);
if (state.ReadType == ReadType.Terminator)
{
ProccessData_Term(state);
}
else
{
ProccessData_Len(state);
}
}
// Client disconnected
else if (state.Callback != null)
{
state.Callback(SocketCallBackResult.SocketClosed, state.ReadCount, null, state.Tag);
}
}
OnActivity();
}
catch (Exception x) {
if (state.Callback != null)
{
state.Callback(SocketCallBackResult.Exception, state.ReadCount, x, state.Tag);
}
}
}
private void ProccessData_Term(_SocketState state)
{
while (state.NextRead > 0)
{
// We used buffer, request more data
if (this.AvailableInBuffer < state.NextRead)
{
// Store nextReadWriteLen for next call of this command
state.NextRead = state.NextRead;
// Recieve next bytes
byte[] buff = new byte[4000];
state.RecvBuffer = buff;
this.BeginReceive(buff, 0, buff.Length, 0, new AsyncCallback(OnRecievedData), state);
// End this method, if data arrives, this method is called again
return;
}
//Read byte(s)
byte[] b = new byte[state.NextRead];
int countRecieved = this.ReceiveFromFuffer(b);
// Increase readed count
state.ReadCount += countRecieved;
// Write byte(s) to buffer, if length isn't exceeded.
if (state.ReadCount < state.MaxLength)
{
state.Stream.Write(b, 0, countRecieved);
}
// Write to stack(terminator checker)
state.NextRead = state.Stack.Push(b, countRecieved);
}
// If we reach so far, then we have successfully readed data
if (state.ReadCount < state.MaxLength)
{
// Remove "removeFromEnd" from end
if (state.RemFromEnd.Length > 0 && state.Stream.Length > state.RemFromEnd.Length)
{
state.Stream.SetLength(state.Stream.Length - state.RemFromEnd.Length);
}
state.Stream.Position = 0;
// Logging stuff
if (m_pLogger != null)
{
if (state.Stream.Length < 200 && state.Stream is MemoryStream)
{
MemoryStream ms = (MemoryStream)state.Stream;
m_pLogger.AddReadEntry(m_pEncoding.GetString(ms.ToArray()));
}
else
{
m_pLogger.AddReadEntry("Big binary, readed " + state.ReadCount.ToString() + " bytes.");
}
}
// We got all data successfully, call EndRecieve call back
if (state.Callback != null)
{
state.Callback(SocketCallBackResult.Ok, state.ReadCount, null, state.Tag);
}
}
else if (state.Callback != null)
{
state.Callback(SocketCallBackResult.LengthExceeded, state.ReadCount, null, state.Tag);
}
}