void AcceptCallback(IAsyncResult ar)
{
Socket client = mainSocket.EndAccept(ar);
mainSocket.BeginAccept(AcceptCallback, null);
Element_Async obj = new Element_Async(4096);
obj.WorkingSocket = client;
connectedClients.Add(client);
AppendText(txt_chat, string.Format("client connect" + connectedClients.Count));
client.BeginReceive(obj.Buffer, 0, 4096, 0, DataReceived, obj);
}
void DataReceived(IAsyncResult ar)
{
Element_Async obj = (Element_Async)ar.AsyncState;
int received = obj.WorkingSocket.EndReceive(ar);
if (received <= 0)
{
obj.WorkingSocket.Close();
return;
}
byte[] byteType = new byte[4];
Buffer.BlockCopy(obj.Buffer, 0, byteType, 0, 4);
string text = Encoding.UTF8.GetString(byteType);
if (text.Equals("text"))
{
byte[] byteMessage = new byte[obj.BufferSize - 4];
Buffer.BlockCopy(obj.Buffer, 4, byteMessage, 0, obj.BufferSize - 4);
string message = Encoding.UTF8.GetString(byteMessage);
string[] tokens = message.Split('\x01');
string _id = tokens[0];
string _msg = tokens[1];
AppendText(txt_chat, string.Format("{0}: {1}", _id, _msg));
}
else if (text.Equals("exit"))
{
for (int i = connectedClients.Count - 1; i >= 0; i--)
{
if (connectedClients[i] == obj.WorkingSocket)
{
connectedClients.RemoveAt(i);
break;
}
}
}
else
{
using (MemoryStream stream = new MemoryStream(obj.Buffer))
{
BinaryFormatter bf = new BinaryFormatter();
stream.Position = 0;
all_shapes[nobject] = (winform_client.All_Shapes)bf.Deserialize(stream);
nobject++;
if (panel.InvokeRequired)
{
panel.Invoke(new MethodInvoker(delegate()
{
panel.Invalidate(true);
panel.Update();
}));
}
}
}
for (int i = connectedClients.Count - 1; i >= 0; i--)
{
Socket socket = connectedClients[i];
if (socket != obj.WorkingSocket)
{
try
{
socket.Send(obj.Buffer);
}
catch
{
try
{
socket.Dispose();
}
catch { }
connectedClients.RemoveAt(i);
}
}
}
obj.ClearBuffer();
obj.WorkingSocket.BeginReceive(obj.Buffer, 0, 4096, 0, DataReceived, obj);
}
