// === TCP events firing =================================================================================================================================================
/// Fire the Connected event if it exists.
protected virtual void OnConnected(TcpServerEventArgs e)
{
if (Connected != null)
{
try
{
Connected(this, e);
// Start Receiving message
e.ConnectionState.Connection.BeginReceive(e.ConnectionState.Buffer, 0, e.ConnectionState.Buffer.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), e.ConnectionState);
// Push to array
csList.Add(e.ConnectionState);
}
catch (Exception ex)
{
// Close the connection if the application threw an exception that is caught here by the server.
e.ConnectionState.Close();
TcpLibApplicationExceptionEventArgs appErr = new TcpLibApplicationExceptionEventArgs(ex);
YucoDebugger.instance.LogError("OnDataReceived: Connected(this, e) encountered exception", "OnConnected", "TCPServer");
try
{
OnHandleApplicationException(appErr);
YucoDebugger.instance.LogWarning("OnConnected: OnHandleApplicationException(appErr)", "OnConnected", "TCPServer");
}
catch (Exception ex2)
{
// the exception handler threw an exception...
YucoDebugger.instance.LogError("OnConnected: ex2" + ex2, "OnConnected", "TCPServer");
}
}
}
}
/// Fire the DataReceived event if it exists.
protected virtual void OnDataReceived(TcpServerEventArgs e)
{
if (DataReceived != null)
{
try
{
DataReceived(this, e);
}
catch (Exception ex)
{
// Close the connection if the application threw an exception that is caught here by the server.
e.ConnectionState.Close();
csList.Remove(e.ConnectionState);
YucoDebugger.instance.LogError("OnDataReceived: DataReceived(this, e) encountered exception", "OnDataReceived", "TCPServer");
TcpLibApplicationExceptionEventArgs appErr = new TcpLibApplicationExceptionEventArgs(ex);
try
{
OnHandleApplicationException(appErr);
YucoDebugger.instance.Log("OnDataReceived: OnHandleApplicationException(appErr)", "OnDataReceived", "TCPServer");
}
catch (Exception ex2)
{
// the exception handler threw an exception...
YucoDebugger.instance.LogError("OnDataReceived: ex2" + ex2, "OnDataReceived", "TCPServer");
}
}
}
}
// === TCP special exception handlers =================================================================================================================================================
/// Invokes the HandleApplicationException handler, if exists.
protected virtual void OnHandleApplicationException(TcpLibApplicationExceptionEventArgs e)
{
if (HandleApplicationException != null)
{
YucoDebugger.instance.LogError("OnHandleApplicationException: " + e, "OnHandleApplicationException", "TCPServer");
HandleApplicationException(this, e);
}
}
/// Receive string data from connection and invokes any Received event handlers.
protected void ReceiveCallback(IAsyncResult res)
{
ConnectionState cs = (ConnectionState)res.AsyncState;
try
{
int bytesRead = 0;
lock (this)
{
bytesRead = cs.Connection.EndReceive(res);
}
if (bytesRead != 0)
{
//YucoDebugger.instance.LogDebug("bytesRead = " + bytesRead.ToString(), "ReceiveCallback", "TCPServer");
// Assign no. of byte read
cs.BytesRead = bytesRead;
// Get string from data
cs.DataString = Encoding.UTF8.GetString(cs.Buffer, 0, bytesRead);
// Fire Connected event
OnDataReceived(new TcpServerEventArgs(cs));
// Begin receiving data
lock (this)
{
cs.Connection.BeginReceive(cs.Buffer, 0, cs.Buffer.Length, SocketFlags.None, new AsyncCallback(ReceiveCallback), cs);
}
}
else
{
YucoDebugger.instance.LogDebug("bytesRead = 0", "ReceiveCallback", "TCPServer");
cs.Close();
OnDisconnected(new TcpServerEventArgs(cs));
}
}
catch (Exception ex)
{
// Close the connection if the application threw an exception that is caught here by the server.
cs.Close();
csList.Remove(cs);
TcpLibApplicationExceptionEventArgs appErr = new TcpLibApplicationExceptionEventArgs(ex);
YucoDebugger.instance.LogError("ReceiveCallback: cs.Close()");
try
{
OnHandleApplicationException(appErr);
YucoDebugger.instance.LogWarning("ReceiveCallback: OnHandleApplicationException(appErr)", "ReceiveCallback", "TCPServer");
}
catch (Exception ex2)
{
// the exception handler threw an exception...
YucoDebugger.instance.LogError("ReceiveCallback: ex2" + ex2, "ReceiveCallback", "TCPServer");
}
}
}
