private void LeaveChat()
{
UdpClient client = new UdpClient();
IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse("230.230.230.230"), 8005);
try
{
TalkPacket msg = new TalkPacket(0);
client.Send(msg.getBytes(), msg.MsgLength, endPoint);
textBoxName.Enabled = true;
buttonConnect.Text = "Подключиться";
Connected = false;
Requested = false;
cancelTokenSource.Cancel();
this.Invoke(new MethodInvoker(() =>
{
ListMessages.Items.Add(" " + DateTime.Now.ToLongTimeString() + " Вы покинули нас.");
}));
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
client.Close();
}
}
private void ConnectChat()
{
textBoxName.Text = UserName;
UdpClient client = new UdpClient();
IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse("230.230.230.230"), 8005);
try
{
TalkPacket msg = new TalkPacket(1, UserName);
client.Send(msg.getBytes(), msg.MsgLength, endPoint);
client.Close();
textBoxName.Enabled = false;
buttonConnect.Text = "Отключиться";
Connected = true;
token = cancelTokenSource.Token;
receiveUDP = new Task(() => ReceiveConnection());
receiveTCP = new Task(() => ReceiveMessage());
receiveUDP.Start();
receiveTCP.Start();
this.Invoke(new MethodInvoker(() =>
{
ListMessages.Items.Add(" " + DateTime.Now.ToLongTimeString() + " Вы присоединились к разговору.");
}));
}
catch (Exception ex)
{
client.Close();
MessageBox.Show(ex.Message);
}
}
private void ReceiveConnection()
{
try
{
while (!token.IsCancellationRequested)
{
UdpClient client = new UdpClient(8005);
client.JoinMulticastGroup(IPAddress.Parse("230.230.230.230"), 100);
IPEndPoint remoteIp = null;
byte[] data = client.Receive(ref remoteIp);
TalkPacket msg = new TalkPacket(data);
Sub sub = new Sub(Encoding.Unicode.GetString(msg.Data), new IPEndPoint(remoteIp.Address, 8006));
client.Close();
if (msg.Type == 1)
{
if (!Subs.Contains(sub))
{
Subs.Add(sub);
}
this.Invoke(new MethodInvoker(() =>
{
ListMessages.Items.Add(" " + DateTime.Now.ToLongTimeString() + " " + sub.name + "(" + sub.endPoint.ToString() + ") " + " присоединился к разговору.");
}));
msg = new TalkPacket(1, UserName);
Socket sender = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
sender.Connect(sub.endPoint.Address, 8006);
sender.Send(msg.getBytes(), SocketFlags.None);
sender.Close();
}
else if (msg.Type == 0)
{
foreach (Sub Ssub in Subs)
{
if (Ssub.endPoint == sub.endPoint)
{
Subs.Remove(Ssub);
break;
}
}
this.Invoke(new MethodInvoker(() =>
{
ListMessages.Items.Add(" " + DateTime.Now.ToLongTimeString() + " " + sub.name + "(" + sub.endPoint.ToString() + "): " + " покинул нас.");
}));
}
else
{
MessageBox.Show("An error occured!");
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void ReceiveConnection(ListBox lb)
{
UdpClient client = new UdpClient(8005);
client.JoinMulticastGroup(IPAddress.Parse("230.230.230.230"), 50);
IPEndPoint remoteIp = null;
try
{
while (!token.IsCancellationRequested)
{
byte[] data = client.Receive(ref remoteIp);
TalkPacket msg = new TalkPacket(data);
Sub sub = new Sub(msg.Data.ToString(), remoteIp);
if (msg.Type == 1)
{
if (!Subs.Contains(sub))
{
Subs.Add(sub);
}
lb.Items.Add(" " + sub.name + " присоединился к разговору.");
TcpClient sender = new TcpClient(remoteIp);
NetworkStream stream = sender.GetStream();
msg = new TalkPacket(1, UserName);
stream.Write(msg.getBytes(), 0, msg.MsgLength);
stream.Close();
sender.Close();
}
else if (msg.Type == 0)
{
if (Subs.Contains(sub))
{
Subs.Remove(sub);
lb.Items.Add(" " + sub.name + " покинул нас.");
}
}
else
{
MessageBox.Show("An error occured!");
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
client.Close();
}
private void buttonSend_Click(object sender, EventArgs e)
{
if (Connected && textBoxMsg.Text.Length > 0)
{
TalkPacket msg = new TalkPacket(2, textBoxMsg.Text);
ListMessages.Items.Add(" " + DateTime.Now.ToLongTimeString() + " Вы: " + textBoxMsg.Text);
textBoxMsg.Text = "";
Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
foreach (Sub sub in Subs)
{
client.Connect(sub.endPoint);
client.Send(msg.getBytes(), SocketFlags.None);
client.Close();
}
}
else
{
MessageBox.Show("Вы не подключены к чату.");
}
}
private void buttonSend_Click(object sender, EventArgs e)
{
if (Connected)
{
TalkPacket msg = new TalkPacket(3, textBoxMsg.Text);
ListMessages.Items.Add(" Вы: " + textBoxMsg.Text);
textBoxMsg.Text = "";
foreach (Sub sub in Subs)
{
IPEndPoint iep = sub.endPoint;
TcpClient client = new TcpClient(iep);
NetworkStream stream = client.GetStream();
stream.Write(msg.getBytes(), 0, msg.MsgLength);
stream.Close();
client.Close();
}
}
else
{
MessageBox.Show("Вы не подключены к чату.");
}
}
private void LeaveChat(ListBox lb)
{
UdpClient client = new UdpClient();
IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse("230.230.230.230"), 8005);
try
{
TalkPacket msg = new TalkPacket(0);
client.Send(msg.getBytes(), msg.MsgLength, endPoint);
textBoxName.Enabled = true;
buttonConnect.Text = "Подключиться";
Connected = false;
cancelTokenSource.Cancel();
lb.Items.Add(" Вы покинули нас.");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
client.Close();
}
}