using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Collections;
using System.IO;
public class TcpServer {
private TcpListener listener;
private bool running;
private int port;
private ArrayList clients;
const byte DEBUG_LEVEL = 2; //0, 1, 2, 3
//private ulong connid;
public TcpServer(int port) {
running = true;
listener
= new TcpListener
(port
); listener.Start();
this.port = port;
clients
= new ArrayList
();
//connid=0;
}
public void thread() {
if (DEBUG_LEVEL>1) { Console.WriteLine("Waiting for clients on port {0}", port); }
while (running) {
Thread.Sleep(10);
foreach (Connection client in clients) {
//... hämta data från client...
//om ny data så skicka till alla i clients utom client
string data;
bool hasData = client.getData(out data);
if (hasData) {
//ulong fromid = client.getId();
foreach (Connection sendclient in clients) {
if (sendclient != client) {
sendclient.sendDataDummy(data);
//ulong toid = sendclient.getId();
}
}
//Console.WriteLine("fromid: {0}", fromid);
}
}
foreach (Connection client in clients) {
if (!client.isConnected()) {
clients.Remove(client);
if (DEBUG_LEVEL>1) { Console.WriteLine("Client dropped"); }
break;
}
}
if (running && listener.Pending()) {
if (DEBUG_LEVEL>1) { Console.WriteLine("Client connected on port {0}", port); }
TcpClient handler = listener.AcceptTcpClient();
//Connection newconn = new Connection(handler, connid++);
Connection newconn
= new Connection
(handler
); clients.Add(newconn);
Thread t
= new Thread
(newconn
.thread); t.Start();
//newconn.start();
}
}
}
public void stop() {
running = false;
foreach (Connection client in clients) {
client.stop();
}
}
public void sendCanPacket(CanPacket cp) {
foreach (Connection client in clients) {
client.sendData(cp);
}
}
}
class Connection {
private TcpClient client;
private NetworkStream ns;
private bool connected;
//ulong id;
private Queue CanPackets
= Queue
.Synchronized(new Queue
());
//public Connection(TcpClient client, ulong id) {
public Connection(TcpClient client) {
this.client = client;
ns = client.GetStream();
//this.id = id;
}
//public ulong getId() {
// return id;
//}
public bool getData (out string data) {
data = null;
if (CanPackets.Count>0) {
data = (string)CanPackets.Dequeue();
return true;
}
return false;
}
public void thread() {
//läs och lagra så att en funktion kan läsa från mig
byte[] data
= new byte[1024]; int recv;
connected = true;
while (connected) {
Thread.Sleep(20);
if (ns.DataAvailable) {
recv = ns.Read(data, 0, data.Length);
if (recv == 0)
break;
string tcpdata = Encoding.ASCII.GetString(data, 0, recv);
//string [] split = null;
//split = tcpdata.Split(" ");
//if (split.Length ) {
//Console.WriteLine("Data arrived on client {0}", id);
CanPackets.Enqueue(tcpdata);
//}
//Console.WriteLine(System.Text.Encoding.ASCII.GetString(data));
}
}
connected = false;
ns.Close();
client.Close();
}
public bool isConnected() {
return connected;
}
public void stop() {
connected = false;
}
public void sendData(CanPacket cp) {
if (connected) {
try {
byte[] data
= new byte[1024];
data = Encoding.ASCII.GetBytes(cp.toRawString()+"\n");
ns.Write(data, 0, data.Length);
}
catch (Exception) {
connected = false;
}
}
}
public void sendDataDummy(string senddata) {
if (connected) {
try {
byte[] data
= new byte[1024];
data = Encoding.ASCII.GetBytes(senddata+"\n");
ns.Write(data, 0, data.Length);
}
catch (Exception) {
connected = false;
}
}
}
}