private void Send(TcpClientSocket _tcpSocket, string _sendMessage)
{
if (_tcpSocket != null && _tcpSocket.Connected)
{
if (_sendMessage.ToLower() != "disconnect")
{
byte[] msgPayload = Encoding.ASCII.GetBytes(_sendMessage);
_tcpSocket.SendAsync(msgPayload);
}
else
{
_tcpSocket.Disconnect();
return;
}
}
else
{
return;
}
}
/// <summary>
/// Sends a message to the server.
/// </summary>
private void BtnSend_Click(object sender, EventArgs e)
{
// If the message is valid.
if (TbMsg.Text != string.Empty && TbMsg.Text != null)
{
string msg = TbMsg.Text;
// If connected to the server.
if (socket != null && socket.Connected)
{
// If the message is not a command.
if (!RunCommand(msg))
{
// Convert the message into a byte array.
byte[] msgPayload = Encoding.ASCII.GetBytes(msg);
// Send the message asynchronously.
socket.SendAsync(msgPayload);
// Clears the message entry textbox.
TbMsg.Text = string.Empty;
// Display the message was sent.
AppendText($"\nYou: {msg}");
}
}
else
{
MessageBox.Show("You are not connected to the server.");
TbMsg.Clear();
}
}
else
{
//MessageBox.Show("Please enter a message before sending", "No Message To Send");
}
}
/// <summary>
/// Connects to the server and sends the username.
/// </summary>
/// <param name="userName"> The client's username for the chat. </param>
void ConnectToServer(string userName)
{
if (!string.IsNullOrWhiteSpace(userName))
{
socket = new TcpClientSocket();
socket.AsyncConnectionResult += (s, e) =>
{
// If connected to the server
if (e.Connected)
{
// Send the username to the server.
byte[] msgPayload = Encoding.ASCII.GetBytes("<c>username" + userName);
socket.SendAsync(msgPayload);
// Start receiving messages from the server.
beginReceiving(socket);
rtbClientMessages.InvokeIfRequired(s1 =>
{
// Displays that a client has connected
if (s1.Text.Length <= 0)
{
this.Invoke((MethodInvoker)(() => rtbClientMessages.AppendText("Connected to the server.")));
}
else
{
this.Invoke((MethodInvoker)(() => rtbClientMessages.AppendText("\nConnected to the server.")));
}
});
btnConnect.InvokeIfRequired(bc => { bc.Text = "Connected"; });
btnSend.InvokeIfRequired(bs => { bs.Enabled = true; });
}
else
{
ConnectToServer(userName);
}
};
try
{
// Set the connection controls to disabled
btnConnect.Text = "Connecting";
btnConnect.Enabled = false;
tbUsername.Enabled = false;
// Connect to the server.
socket.ConnectAsync(ipEnd);
}
catch (Exception ex)
{
// Set the conncet controls to enabled
btnConnect.Text = "Connect";
btnConnect.Enabled = true;
tbUsername.Enabled = true;
MessageBox.Show(ex.ToString(), "Cannot Connect To Server");
}
}
else
{
MessageBox.Show("Please enter a valid username.", "Invalid Username");
}
}