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using System;
using System.Linq;
using System.Threading;
using Pfz.Collections;
using Pfz.Threading;
namespace Pfz.Remoting
{
/// <summary>
/// Class that acts as a server to remoting connections.
/// </summary>
public class RemotingServer:
RemotingCommon
{
#region Fields
private readonly IChannellerListener _listener;
private AutoTrimDictionary<long, RemotingClient> _clients = new AutoTrimDictionary<long, RemotingClient>();
private long _idGenerator;
#endregion
#region Constructors
/// <summary>
/// Creates the server using the given parameters.
/// </summary>
public RemotingServer(IChannellerListener listener)
{
if (listener == null)
throw new ArgumentNullException("listener");
_listener = listener;
}
/// <summary>
/// Creates a new RemotingServer object, that will listen at the given tcp/ip port.
/// </summary>
public RemotingServer(int tcpIpPort)
{
_listener = new HybridChannellerListener(tcpIpPort, RemotingCommon.DefaultBufferSizePerChannel);
}
#endregion
#region Dispose
/// <summary>
/// Closes the server connection and all client connections.
/// </summary>
protected override void Dispose(bool disposing)
{
if (disposing)
{
var clients = _clients;
if (clients != null)
{
_clients = null;
foreach(var client in clients.Values)
{
client.Disposed -= _ClientDisposed;
client.Dispose();
}
clients.Dispose();
}
var listener = _listener;
if (listener != null)
listener.Dispose();
}
base.Dispose(disposing);
}
#endregion
#region Methods
#region _ClientDisposed
private void _ClientDisposed(object sender, EventArgs args)
{
RemotingClient client = (RemotingClient)sender;
try
{
_clients.Remove(client._id);
}
catch
{
if (!WasDisposed)
throw;
}
}
#endregion
#region Start
/// <summary>
/// Starts the server and makes its parameters read-only.
/// </summary>
public void Start()
{
CheckThread();
if (_parameters._isReadOnly)
throw new RemotingException("The RemotingServer is already running.");
UnlimitedThreadPool.Run
(
() =>
{
try
{
while(!WasDisposed)
{
var channeller = _listener.TryAccept();
if (channeller == null)
return;
try
{
UnlimitedThreadPool.Run
(
() =>
{
RemotingClient client = null;
long id = Interlocked.Increment(ref _idGenerator);
try
{
client = CreateClient(_parameters);
client._id = id;
client.Start(channeller);
}
catch
{
if (client != null)
client.Dispose();
channeller.Dispose();
return;
}
if (WasDisposed)
return;
_clients.Add(id, client);
var clientConnected = ClientConnected;
if (clientConnected != null)
{
var args = new RemotingClientConnectedEventArgs();
args.Client = client;
clientConnected(this, args);
}
}
);
}
catch
{
channeller.Dispose();
throw;
}
}
}
catch
{
if (!WasDisposed)
throw;
}
}
);
}
#endregion
#region CreateClient
/// <summary>
/// Executed when a client connects, so a "RemotingClient" object must be created.
/// This method is here in case you need to return a more specific remoting client.
///
/// You must create the RemotingClient using the version that receives the the "parameters".
/// </summary>
protected virtual RemotingClient CreateClient(RemotingParameters parameters)
{
var result = new RemotingClient(parameters);
return result;
}
#endregion
#region GetConnectedClients
/// <summary>
/// Gets an array with all connected clients.
/// </summary>
public RemotingClient[] GetConnectedClients()
{
return _clients.Values.ToArray();
}
#endregion
#endregion
#region Events
#region ClientConnected
/// <summary>
/// Event invoked when just after a client connects.
/// </summary>
public event EventHandler<RemotingClientConnectedEventArgs> ClientConnected;
#endregion
#endregion
}
}
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I started to program computers when I was 11 years old, as a hobbyist, programming in AMOS Basic and Blitz Basic for Amiga.
At 12 I had my first try with assembler, but it was too difficult at the time. Then, in the same year, I learned C and, after learning C, I was finally able to learn assembler (for Motorola 680x0).
Not sure, but probably between 12 and 13, I started to learn C++. I always programmed "in an object oriented way", but using function pointers instead of virtual methods.
At 15 I started to learn Pascal at school and to use Delphi. At 16 I started my first internship (using Delphi). At 18 I started to work professionally using C++ and since then I've developed my programming skills as a professional developer in C++ and C#, generally creating libraries that help other developers do their work easier, faster and with less errors.
Want more info or simply want to contact me?
Take a look at:
http://paulozemek.azurewebsites.net/
Or e-mail me at: paulozemek@outlook.com
Codeproject MVP 2012, 2015 & 2016
Microsoft MVP 2013-2014 (in October 2014 I started working at Microsoft, so I can't be a Microsoft MVP anymore).