SafeDispatch/SafeMobileLIB_DLL/TCPServer.cs
2024-02-22 18:43:59 +02:00

143 lines
4.5 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Threading;
using System.Net;
namespace SafeMobileLib
{
public class TCPServer
{
private bool isRunning = false;
private TcpListener tcpListener;
private Thread listenThread;
public TCPServer()
{
Console.WriteLine("TCPServer Constructor");
}
public void Start(int portNr)
{
isRunning = true;
Console.WriteLine("TCPServer Started on port " + portNr);
tcpListener = new TcpListener(IPAddress.Any, portNr);
listenThread = new Thread(new ThreadStart(ListenForClients));
listenThread.IsBackground = true;
listenThread.Start();
Console.WriteLine("===================================================");
}
public void Stop()
{
isRunning = false;
if (tcpListener != null)
{
tcpListener.Stop();
}
if (listenThread.IsAlive)
{
listenThread.Abort();
}
}
private void ListenForClients()
{
tcpListener.Start();
while (isRunning)
{
Console.WriteLine("Waiting for client....");
//blocks until a client has connected to the server
TcpClient client = tcpListener.AcceptTcpClient();
Console.WriteLine("Client connected" + ((IPEndPoint)client.Client.RemoteEndPoint).Address.ToString());
//create a thread to handle communication
//with connected client
Thread clientThread = new Thread(new ParameterizedThreadStart(HandleClientComm));
clientThread.IsBackground = true;
clientThread.Start(client);
}
}
private void HandleClientComm(object client)
{
TcpClient tcpClient = (TcpClient)client;
NetworkStream clientStream = tcpClient.GetStream();
string clientIPAddress = "Client Ip Address is: " + IPAddress.Parse(((
IPEndPoint)tcpClient.Client.RemoteEndPoint).Address.ToString());
if (this.OnConnectionRecv != null)
{
this.OnConnectionRecv(clientStream, clientIPAddress);
}
byte[] message = new byte[4096];
int bytesRead;
while (isRunning)
{
bytesRead = 0;
try
{
//blocks until client sends a message
bytesRead = clientStream.Read(message, 0, 4096);
}
catch
{
//a socket error has occured
break;
}
if (bytesRead == 0)
{
//the client has disconnected from the server
break;
}
//message has successfully been received
//ASCIIEncoding encoder = new ASCIIEncoding();
//System.Diagnostics.Debug.WriteLine(encoder.GetString(message, 0, bytesRead));
if (this.OnMessageRecv != null)
{
this.OnMessageRecv(message, bytesRead, clientStream);
}
if (this.OnMessageRecvWithIdent != null)
{
this.OnMessageRecvWithIdent(message, bytesRead, clientIPAddress);
}
}
tcpClient.Close();
if (this.OnConnectionEnded != null)
{
this.OnConnectionEnded(clientIPAddress);
}
Console.WriteLine("Client disconnected");
}
public delegate void MessageRecv(byte[] data, int recv, NetworkStream ns);
public event MessageRecv OnMessageRecv;
public delegate void MessageRecvWithIdent(byte[] data, int recv, string ip);
public event MessageRecvWithIdent OnMessageRecvWithIdent;
public delegate void ConnectionRecv(NetworkStream ns, string IP);
public event ConnectionRecv OnConnectionRecv;
public delegate void ConnectionEnded(string IP);
public event ConnectionEnded OnConnectionEnded;
public void Send(byte[] data, int len, NetworkStream ns)
{
if (ns != null)
{
ns.Write(data, 0, len);
ns.Flush();
}
}
}
}