/// <summary>Stops the connection and message listeners.</summary>
/// <exception cref="ApplicationException">Thrown for any unexpected exception.</exception>
public void StopServer()
{
try {
try {
this.mReading = false;
Thread.Sleep(2000);
if (this.mMessageThread.IsAlive)
{
this.mMessageThread.Abort();
this.mMessageThread.Join(1000);
}
this.mMessageThread = null;
}
catch (ThreadStateException) { this.mMessageThread.Resume(); }
catch (Exception) { }
try {
this.mListening = false;
Thread.Sleep(2000);
if (this.mListeningThread.IsAlive)
{
this.mListeningThread.Abort();
this.mListeningThread.Join(1000);
}
this.mListeningThread = null;
}
catch (ThreadStateException) { this.mListeningThread.Resume(); }
catch (Exception) { }
try {
//Clear out all client connections
foreach (DictionaryEntry entry in this.mClients)
{
TcpClientProxy client = (TcpClientProxy)entry.Value;
client.Close();
}
}
catch (Exception) { }
this.mClients.Clear();
//Stop the base listener
base.Stop();
}
catch (ApplicationException ex) { throw ex; }
catch (Exception ex) { throw new ApplicationException("Unexpected error while stopping (closing) the listener.", ex); }
finally { if (this.ListeningStateChanged != null)
{
this.ListeningStateChanged(this, EventArgs.Empty);
}
}
}
private void OnConnected(object sender, ClientEventArgs e)
{
//Raise an event that a client is connected
try {
//Add the new client to the collection of attached clients
TcpClientProxy client = e.Client;
lock (this.mClients) {
this.mClients.Add(client.SessionID, client);
}
}
catch (Exception ex) { if (this.Error != null)
{
this.Error(this, new ErrorEventArgs(ex));
}
}
finally { if (this.ClientConnected != null)
{
this.ClientConnected(this, e);
}
}
}
private void listenForMessages()
{
//Listen for client messages
while (this.mReading)
{
try { if (this.mMessageThread.IsAlive)
{
Thread.Sleep(TcpClientProxy.ReadTimeout);
}
} catch {}
try {
//Request a read for each connected clients
lock (this.mClients) {
foreach (DictionaryEntry entry in this.mClients)
{
//Validate client is still active (no session timeout)
TcpClientProxy client = (TcpClientProxy)entry.Value;
if (client.SessionTimedOut)
{
//Client timed-out; dispose the object
this.mTimeoutDelegate.BeginInvoke(null, new ClientEventArgs(client), null, null);
}
else
{
//Check for a message from this client
byte[] message = client.Read();
if (message != null)
{
this.mReceivedDelegate.BeginInvoke(null, new ClientMessageEventArgs(client, message), null, null);
}
}
}
}
this.mMessageHeartbeatDelegate.BeginInvoke(this, EventArgs.Empty, null, null);
}
catch (Exception ex) { this.mReceiveErrorDelegate.BeginInvoke(this, new ErrorEventArgs(new ApplicationException("ArgixTcpListener::listenForMessages() exception.", ex)), null, null); }
}
}
private void listenForConnections()
{
//Listen for client connections
while (this.mListening)
{
try { if (this.mListeningThread.IsAlive)
{
Thread.Sleep(3000);
}
} catch {}
try {
//Check for pending connection requests
if (base.Pending())
{
//Create a client to handle server requests
this.mPendingDelegate.BeginInvoke(null, EventArgs.Empty, null, null);
TcpClientProxy client = new TcpClientProxy(base.AcceptTcpClient());
this.mConnectedDelegate.BeginInvoke(null, new ClientEventArgs(client), null, null);
}
this.mListenerHeartbeatDelegate.BeginInvoke(null, EventArgs.Empty, null, null);
}
catch (Exception ex) { this.mConnectErrorDelegate.BeginInvoke(null, new ErrorEventArgs(ex), null, null); }
}
}
/// <summary></summary>
/// <param name="client"></param>
/// <param name="message"></param>
public ClientMessageEventArgs(TcpClientProxy client, byte[] message)
{
this._client = client; this._message = message;
}
/// <summary></summary>
/// <param name="client"></param>
public ClientEventArgs(TcpClientProxy client)
{
this._client = client;
}