mirror of https://github.com/PCSX2/pcsx2.git
360 lines
13 KiB
C#
360 lines
13 KiB
C#
/*
|
|
* Copyright (C) 2009-2011 Ferreri Alessio
|
|
* Copyright (C) 2009-2018 PCSX2 Dev Team
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Net;
|
|
using System.Net.Sockets;
|
|
using System.Threading;
|
|
using System.IO;
|
|
using System.ComponentModel;
|
|
using System.Text;
|
|
|
|
namespace TCPLibrary.Core
|
|
{
|
|
/// <summary>
|
|
/// Base TCP server class wrapped around TcpListener.
|
|
/// </summary>
|
|
public class Server
|
|
{
|
|
/// <summary>
|
|
/// Socket maintaining the connection.
|
|
/// </summary>
|
|
private TcpListener _socket;
|
|
/// <summary>
|
|
/// Whether the server is enabled or not.
|
|
/// </summary>
|
|
private Boolean _enabled;
|
|
/// <summary>
|
|
/// List of the clients connected to the server.
|
|
/// </summary>
|
|
private List<ClientS> _clients;
|
|
/// <summary>
|
|
/// Number of connection permitted in the backlog of the server.
|
|
/// </summary>
|
|
private Int32 _connectionbacklog;
|
|
|
|
/// <summary>
|
|
/// Delegate for the event of the Enabled property change.
|
|
/// </summary>
|
|
/// <param name="sender">Sender of the event.</param>
|
|
public delegate void EnabledChangedHandler(Server sender);
|
|
/// <summary>
|
|
/// Occurs when the Enabled property is changed.
|
|
/// </summary>
|
|
public event EnabledChangedHandler OnEnabledChanged;
|
|
|
|
/// <summary>
|
|
/// Delegate for the event of receiving a line of data from a client.
|
|
/// </summary>
|
|
/// <param name="server">Server raising the event.</param>
|
|
/// <param name="client">Client involved in the communication.</param>
|
|
/// <param name="Data">Line of data received.</param>
|
|
public delegate void DataCommunicationHandler(Server server, ClientS client, Data Data);
|
|
/// <summary>
|
|
/// Occurs when a client send a line of data to the server.
|
|
/// </summary>
|
|
public event DataCommunicationHandler OnClientDataReceived;
|
|
/// <summary>
|
|
/// Occurs before the server send a line of data to a client.
|
|
/// </summary>
|
|
public event DataCommunicationHandler OnClientBeforeDataSent;
|
|
/// <summary>
|
|
/// Occurs after the server send a line of data to a client.
|
|
/// </summary>
|
|
public event DataCommunicationHandler OnClientAfterDataSent;
|
|
|
|
/// <summary>
|
|
/// Delegate for the event of a connection of a client.
|
|
/// </summary>
|
|
/// <param name="server">Server raising the event.</param>
|
|
/// <param name="sender">The new client connected.</param>
|
|
public delegate void ConnectedHandler(Server server, ClientS sender);
|
|
/// <summary>
|
|
/// Occurs after a client is connected to the server.
|
|
/// </summary>
|
|
public event ConnectedHandler OnClientAfterConnect;
|
|
|
|
/// <summary>
|
|
/// Delegate for the event of a connection of a client.
|
|
/// </summary>
|
|
/// <param name="server">Server raising the event.</param>
|
|
/// <param name="client">The new client to be connected.</param>
|
|
/// <param name="args">Specify if the client should be accepted into the server.</param>
|
|
public delegate void BeforeConnectedHandler(Server server, ClientS client, CancelArgs args);
|
|
/// <summary>
|
|
/// Occurs before a client is allowed to connect to the server.
|
|
/// </summary>
|
|
public event BeforeConnectedHandler OnClientBeforeConnect;
|
|
|
|
/// <summary>
|
|
/// Delegate for the event of disconnection of a client.
|
|
/// </summary>
|
|
/// <param name="server">Server raising the event.</param>
|
|
/// <param name="sender">The client disconnected.</param>
|
|
public delegate void DisconnectedHandler(Server server, ClientS sender);
|
|
/// <summary>
|
|
/// Occurs right after a client disconnect from the server.
|
|
/// </summary>
|
|
public event DisconnectedHandler OnClientAfterDisconnected;
|
|
/// <summary>
|
|
/// Occurs before a client disconnect from the server.
|
|
/// </summary>
|
|
public event DisconnectedHandler OnClientBeforeDisconnected;
|
|
|
|
/// <summary>
|
|
/// Get/set the port number to which the server will listen. Cannot be set while the server is active.
|
|
/// </summary>
|
|
/// <exception cref="TCPLibrary.Core.ServerAttivoException" />
|
|
public Int32 Port
|
|
{
|
|
get
|
|
{
|
|
if (Enabled)
|
|
return ((IPEndPoint) _socket.LocalEndpoint).Port;
|
|
throw new NotSupportedException("Server is not running and hence has no port.");
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Get/set the enabled state of the server. Setting this to true will actually activate the server.
|
|
/// </summary>
|
|
/// <exception cref="System.Net.Sockets.SocketException" />
|
|
public Boolean Enabled
|
|
{
|
|
get { return _enabled; }
|
|
set
|
|
{
|
|
if (value == true)
|
|
{
|
|
if (_enabled == false)
|
|
ActivateServer();
|
|
}
|
|
else
|
|
{
|
|
if (_enabled == true)
|
|
DeactivateServer();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Get/set the number of connection permitted in the backlog of the server.
|
|
/// </summary>
|
|
/// <exception cref="TCPLibrary.Core.ServerAttivoException" />
|
|
public Int32 ConnectionBackLog
|
|
{
|
|
get { return _connectionbacklog; }
|
|
set
|
|
{
|
|
if (Enabled == false)
|
|
_connectionbacklog = value;
|
|
else
|
|
throw new ArgumentException("Impossibile eseguire l'operazione a server attivo");
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Get the list of the clients connected to the server.
|
|
/// </summary>
|
|
public List<ClientS> Clients
|
|
{
|
|
get { return _clients; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deactivate the server.
|
|
/// </summary>
|
|
protected virtual void DeactivateServer()
|
|
{
|
|
_enabled = false;
|
|
_socket.Stop();
|
|
_socket = null;
|
|
|
|
lock (_clients)
|
|
{
|
|
for (int i = 0; i < _clients.Count; i++)
|
|
_clients[i].Disconnect();
|
|
}
|
|
|
|
if (OnEnabledChanged != null)
|
|
OnEnabledChanged(this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Activate the server.
|
|
/// </summary>
|
|
protected virtual void ActivateServer()
|
|
{
|
|
_socket = new TcpListener(IPAddress.Any, 0);
|
|
_socket.Start(ConnectionBackLog);
|
|
Thread thd = new Thread(new ThreadStart(MainThread));
|
|
thd.Name = "Server on port " + ((IPEndPoint) _socket.LocalEndpoint).Port;
|
|
thd.IsBackground = true;
|
|
thd.Start();
|
|
_enabled = true;
|
|
if (OnEnabledChanged != null)
|
|
OnEnabledChanged(this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Broadcast a line of data to all the clients connected to the server.
|
|
/// </summary>
|
|
/// <param name="Data">Line of data to be sent.</param>
|
|
/// <exception cref="TCPLibrary.Core.ServerNonAttivoException" />
|
|
public void Broadcast(Data Data)
|
|
{
|
|
if (Enabled)
|
|
{
|
|
lock (_clients)
|
|
{
|
|
foreach (var itm in _clients)
|
|
if (itm.Connected)
|
|
itm.Send(Data);
|
|
}
|
|
}
|
|
else
|
|
throw new ArgumentException("Unable to execute this operation when the server is inactive.");
|
|
}
|
|
|
|
/// <summary>
|
|
/// Base constructor of the class.
|
|
/// </summary>
|
|
public Server()
|
|
{
|
|
_clients = new List<ClientS>();
|
|
_connectionbacklog = 0;
|
|
_enabled = false;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Thread function that actually run the server socket work.
|
|
/// </summary>
|
|
private void MainThread()
|
|
{
|
|
try
|
|
{
|
|
while (Enabled == true)
|
|
{
|
|
TcpClient client = _socket.AcceptTcpClient();
|
|
|
|
CancelArgs args = new CancelArgs(false);
|
|
ClientS cl = CreateClient(client);
|
|
if (OnClientBeforeConnect != null)
|
|
OnClientBeforeConnect(this, cl, args);
|
|
|
|
if (args.Cancel != true)
|
|
{
|
|
lock (_clients)
|
|
{
|
|
_clients.Add(cl);
|
|
}
|
|
|
|
ASCIIEncoding ae = new ASCIIEncoding();
|
|
byte[] arr = ae.GetBytes("CONNECTEDTCPSERVER");
|
|
|
|
cl.Send(new Data(arr));
|
|
|
|
if (OnClientAfterConnect != null)
|
|
OnClientAfterConnect(this, cl);
|
|
cl.Start();
|
|
}
|
|
else
|
|
{
|
|
client.GetStream().Close();
|
|
client.Close();
|
|
}
|
|
}
|
|
}
|
|
catch (SocketException)
|
|
{
|
|
Enabled = false;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Overridable function that create the structure to memorize the client data.
|
|
/// </summary>
|
|
/// <param name="socket">Socket of the client.</param>
|
|
/// <returns>The structure in which memorize all the information of the client.</returns>
|
|
protected virtual ClientS CreateClient(TcpClient socket)
|
|
{
|
|
ClientS cl = new ClientS(this, socket);
|
|
return cl;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raise the OnClientAfterDataSent event.
|
|
/// </summary>
|
|
/// <param name="cl">Client that raised the event.</param>
|
|
/// <param name="data">Line of data sent.</param>
|
|
internal void RaiseAfterDataSentEvent(ClientS cl, Data data)
|
|
{
|
|
if (OnClientAfterDataSent != null)
|
|
OnClientAfterDataSent(this, cl, data);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raise the OnClientBeforeDataSent event.
|
|
/// </summary>
|
|
/// <param name="cl">Client that raised the event.</param>
|
|
/// <param name="data">Line of data sent.</param>
|
|
internal void RaiseBeforeDataSentEvent(ClientS cl, Data data)
|
|
{
|
|
if (OnClientBeforeDataSent != null)
|
|
OnClientBeforeDataSent(this, cl, data);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raise the OnDataReceived event.
|
|
/// </summary>
|
|
/// <param name="cl">Client that raised the event.</param>
|
|
/// <param name="data">Line of data received.</param>
|
|
internal void RaiseDataReceivedEvent(ClientS cl, Data data)
|
|
{
|
|
if (OnClientDataReceived != null)
|
|
OnClientDataReceived(this, cl, data);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raise the OnClientAfterDisconnected event.
|
|
/// </summary>
|
|
/// <param name="cl">Client that raised the event.</param>
|
|
internal void RaiseClientAfterDisconnectedEvent(ClientS cl)
|
|
{
|
|
if (OnClientAfterDisconnected != null)
|
|
OnClientAfterDisconnected(this, cl);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Raise the OnClientBeforeDisconnected event.
|
|
/// </summary>
|
|
/// <param name="cl">Client that raised the event.</param>
|
|
internal void RaiseClientBeforeDisconnectedEvent(ClientS cl)
|
|
{
|
|
if (OnClientBeforeDisconnected != null)
|
|
OnClientBeforeDisconnected(this, cl);
|
|
}
|
|
}
|
|
}
|