private void NewConnection(NewClient obj)
{
// add to list of clients;
list.TryAdd(obj.id, obj);
string msg = string.Format("[Client {0}] connected", obj.id);
WriteToLog(msg);
SendTask(msg, obj.id);
while (obj.client.Connected)
{
try
{
// while the client is connected, constantly read from the buffer asynchronously
obj.stream.BeginRead(obj.buffer, 0, obj.buffer.Length, new AsyncCallback(Read), obj);
// Block thread until otherwise noted;
obj.handle.WaitOne();
}
catch (Exception e)
{
WriteToLog(string.Format("Something went wrong: {0}", e.Message));
}
}
// Client is no longer connected
obj.client.Close();
msg = string.Format("[Client {0}] disconnected", obj.id);
WriteToLog(msg);
SendTask(msg, obj.id);
list.TryRemove(obj.id, out NewClient tmp);
}
private void StartListening(IPAddress iPAddress, int port)
{
TcpListener listener = null;
try
{
listener = new TcpListener(iPAddress, port);
listener.Start();
Activate(true);
WriteToLog("Server Started. Waiting for connections....");
while (active)
{
if (listener.Pending())
{
try
{
// Create client for pending listener
NewClient obj = new NewClient();
obj.id = id;
obj.client = listener.AcceptTcpClient();
obj.buffer = new byte[obj.client.ReceiveBufferSize];
obj.stream = obj.client.GetStream();
obj.data = new StringBuilder();
obj.handle = new EventWaitHandle(false, EventResetMode.AutoReset);
Thread th = new Thread(() => NewConnection(obj));
th.IsBackground = true;
th.Start();
id++;
}
catch (Exception e)
{
WriteToLog(string.Format("Something went wrong: {0}", e.Message));
}
}
}
}
catch (Exception e)
{
WriteToLog(string.Format("Something went wrong: {0}", e.Message));
}
finally
{
if (listener != null)
{
listener.Server.Close();
}
}
}
private void Read(IAsyncResult result)
{
NewClient obj = (NewClient)result.AsyncState;
int bytes = 0;
if (obj.client.Connected)
{
try
{
bytes = obj.stream.EndRead(result);
}
catch (Exception ex)
{
WriteToLog(string.Format("[/ {0} /]", ex.Message));
}
}
if (bytes > 0)
{
obj.data.AppendFormat("{0}", Encoding.UTF8.GetString(obj.buffer, 0, bytes));
try
{
if (obj.stream.DataAvailable)
{
obj.stream.BeginRead(obj.buffer, 0, obj.buffer.Length, new AsyncCallback(Read), obj);
}
else
{
string msg = string.Format("[Client {0}]: {1}", obj.id, obj.data);
WriteToLog(msg);
SendTask(msg, obj.id);
obj.data.Clear();
obj.handle.Set();
}
}
catch (Exception ex)
{
obj.data.Clear();
WriteToLog(string.Format("[/ {0} /]", ex.Message));
obj.handle.Set();
}
}
else
{
obj.client.Close();
obj.handle.Set();
}
}
private void Write(IAsyncResult ar)
{
NewClient obj = (NewClient)ar.AsyncState;
if (obj.client.Connected)
{
try
{
// Completes the async call to `BeginWrite`
obj.stream.EndWrite(ar);
}
catch (Exception e)
{
Console.WriteLine("Something went wrong: {0}", e.Message);
}
}
}