public void WiteTo(MessageStream stream)
{
byte[] bytes = BitConverter.GetBytes(SizeInBytes);
stream.Write(bytes, 0, 4);
bytes = BitConverter.GetBytes(Type);
stream.Write(bytes, 0, 4);
}
private void CloseConnection()
{
IsConnected = false;
if (this._InStream != null)
{
this._InStream.Close();
}
if (this._LargeInStream != null)
{
this._LargeInStream.Close();
}
if (this._OutStream != null)
{
this._OutStream.Close();
}
if (this.Socket != null)
{
this.Socket.Close();
}
this._OutStream = null;
this._InStream = null;
this._LargeInStream = null;
this.Socket = null;
OnClosed();
}
public override void ReadData(MessageStream stream)
{
if (stream.ReadBoolean())
{
Text = stream.ReadString();
}
}
public void ReadFrom(MessageStream stream)
{
byte[] bytes = new byte[4];
stream.Read(bytes, 0, 4);
SizeInBytes = BitConverter.ToInt32(bytes, 0);
stream.Read(bytes, 0, 4);
this.Type = BitConverter.ToInt32(bytes, 0);
}
public override void WriteData(MessageStream stream)
{
if (string.IsNullOrEmpty(Text))
{
stream.Write(false);
}
else
{
stream.Write(true);
stream.Write(Text);
}
}
/// <summary>
/// Start worker
/// </summary>
internal void Start(Socket socket)
{
IsConnected = true;
Exception = null;
this._InStream = new MessageStream(_DataBuffer)
{
CanRead = true
};
this._OutStream = new MessageStream(_DataBuffer.Length)
{
CanWrite = true
};
this.Socket = socket;
WaitForData();
}
/// <summary>
/// handle recieved message
/// </summary>
/// <param name="stream">Stream that contains message data</param>
/// <param name="header">Header of message</param>
/// <returns>Message</returns>
private Message HandleMessage(MessageStream stream, MessageHeader header)
{
if (_MessageTranslator != null)
{
stream.Flush();
Message msg = _MessageTranslator.Translate(header.Type);
if (msg != null)
{
msg.SizeInBytes = header.SizeInBytes;
msg.ReadData(stream);
OnMessage(msg);
}
else
{
Logger.LogWarning(string.Format("Can not translate message id : ", header.Type));
}
return(msg);
}
else
{
return(null);
}
}
public abstract void ReadData(MessageStream stream);
public abstract void WriteData(MessageStream stream);
// This the call back function which will be invoked when the socket
// detects any client writing of data on the stream
private void OnDataReceived(IAsyncResult asyn)
{
try
{
if (Socket == null || !IsConnected)
{
return;
}
// Complete the BeginReceive() asynchronous call by EndReceive() method
// which will return the number of characters written to the stream
// by the client
int dataLenght = Socket.EndReceive(asyn);
if (dataLenght > 0)
{
if (_MultipartMsg) // this should be the next part of a previous message
{
if (dataLenght > 0)
{
_LargeInStream.CanWrite = true;
_LargeInStream.Write(_DataBuffer, 0, dataLenght);
_LargeInStream.CanWrite = false;
this._DataRecieved += dataLenght;
}
}
else // this is the first part of a message
{
if (dataLenght > MessageHeader.HeaderSize)
{
this._InHeader.ReadFrom(_DataBuffer);
this._DataRecieved = dataLenght - MessageHeader.HeaderSize;
if (this._InHeader.SizeInBytes > this._DataRecieved)
{
// the message has another part
_MultipartMsg = true;
if (_LargeInStream == null)
{
_LargeInStream = new MessageStream(this._InHeader.SizeInBytes)
{
CanRead = true
};
Logger.LogWarning(string.Format("Size of message({0}) is greater than buffersize({1})", this._InHeader.SizeInBytes, _DataBuffer.Length));
}
else
{
_LargeInStream.Seek(0, SeekOrigin.Begin);
}
_LargeInStream.CanWrite = true;
_LargeInStream.Write(_DataBuffer, MessageHeader.HeaderSize, _DataRecieved);
_LargeInStream.CanWrite = false;
}
else
{
_InStream.CanWrite = true;
_InStream.Seek(0, SeekOrigin.Begin);
_InStream.Write(_DataBuffer, MessageHeader.HeaderSize, _DataRecieved);
_InStream.CanWrite = false;
}
}
}
Message msg = null;
if (_MultipartMsg)
{
if (this._DataRecieved >= this._InHeader.SizeInBytes)
{
// this is the last part of message
_MultipartMsg = false;
_LargeInStream.Seek(0, SeekOrigin.Begin);
msg = HandleMessage(_LargeInStream, this._InHeader);
this._InHeader.SizeInBytes = 0;
}
}
else
{
_InStream.Seek(0, SeekOrigin.Begin);
msg = HandleMessage(_InStream, this._InHeader);
this._InHeader.SizeInBytes = 0;
}
if (msg != null && msg.Type == (int)MessageType.Disconnect)
{
CloseConnection();
}
else
{
// Continue the waiting for data on the Socket
WaitForData();
}
}
}
catch (ObjectDisposedException ex)
{
Exception = ex;
System.Diagnostics.Debugger.Log(0, "Errors", "Socket has been closed");
Close();
}
catch (SocketException se)
{
if (se.ErrorCode == 10054) // Error code for Connection reset by peer
{
string msg = string.Format("Client {0} Disconnected", Name);
Logger.LogMessage(msg);
}
else
{
Logger.LogError(se);
}
Exception = se;
Close();
}
}
public override void ReadData(MessageStream stream)
{
stream.ReadBoolean();
}
public override void WriteData(MessageStream stream)
{
stream.Write(true);
}
