changed the server IP address to read only

automatically recognizes the server IP address

Author: dadul96

TCP_Server_Client_Tester/MainWindow.xaml

@@ -80,8 +80,8 @@
 
                         <Label Content="Port:" Grid.Column="0" Grid.Row="0" VerticalAlignment="Bottom"/>
                         <TextBox x:Name="serverPort" Text="233"  Grid.Column="0" Grid.Row="1" Margin="5,0,5,10"/>
-                        <Label Content="IP:" Grid.Column="0" Grid.Row="2" VerticalAlignment="Bottom"/>
-                        <TextBox x:Name="serverIP" Text="192.168.144.1" Grid.Column="0" Grid.Row="3" Margin="5,0,5,10"/>
+                        <Label Content="IP (read only):" Grid.Column="0" Grid.Row="2" VerticalAlignment="Bottom"/>
+                        <TextBox x:Name="serverIP" Text="0.0.0.0" Grid.Column="0" Grid.Row="3" Margin="5,0,5,10" IsEnabled="false"/>
                         <Button x:Name="serverStartButton" Content="Listen" Grid.Column="0" Grid.Row="4" Margin="5,5,5,5" Background="LightGreen" FontWeight="Bold" Click="serverStartButton_Click"/>
                     </Grid>
                 </Grid>
@@ -160,7 +160,7 @@
                         <Label Content="Port:" Grid.Column="0" Grid.Row="0" VerticalAlignment="Bottom"/>
                         <TextBox x:Name="clientPort" Text="233" Grid.Column="0" Grid.Row="1" Margin="5,0,5,10"/>
                         <Label Content="IP:" Grid.Column="0" Grid.Row="2" VerticalAlignment="Bottom"/>
-                        <TextBox x:Name="clientIP" Text="192.168.144.1" Grid.Column="0" Grid.Row="3" Margin="5,0,5,10"/>
+                        <TextBox x:Name="clientIP" Text="0.0.0.0" Grid.Column="0" Grid.Row="3" Margin="5,0,5,10"/>
                         <Button x:Name="clientStartButton" Content="Connect" Grid.Column="0" Grid.Row="4" Margin="5,5,5,5" Background="LightGreen" FontWeight="Bold" Click="clientStartButton_Click"/>
                     </Grid>
                 </Grid>

TCP_Server_Client_Tester/MainWindow.xaml.cs

@@ -39,6 +39,7 @@ enum Tcp
 
         const int SIZE1K = 1024;    //bytes
         const int TIMEOUT = 2000;   //ms
+        const int MAX_CLIENTS = 5;
 
         static volatile bool serverStartButtonFlag = false;
         static volatile bool clientStartButtonFlag = false;
@@ -57,6 +58,12 @@ enum Tcp
         public MainWindow()
         {
             InitializeComponent();
+
+            ip = Dns.GetHostEntry(Dns.GetHostName()).AddressList[2].ToString();
+            Application.Current.Dispatcher.Invoke(DispatcherPriority.Background, new Action(() =>
+            {
+                serverIP.Text = ip;
+            }));
         }
 
 
@@ -66,8 +73,9 @@ void TcpServerLoop()
             {
                 bool closeFlag = false;
 
-                IPAddress localAddr = IPAddress.Parse(ip);
-                TcpListener server = new TcpListener(localAddr, port);
+                IPAddress ipAddress = Dns.GetHostEntry(Dns.GetHostName()).AddressList[0];
+                IPEndPoint ipLocalEndPoint = new IPEndPoint(ipAddress, port);
+                TcpListener server = new TcpListener(ipLocalEndPoint);
                 TcpClient client = null;
 
                 byte[] bytesToSend = new byte[SIZE1K];
@@ -83,7 +91,17 @@ void TcpServerLoop()
                             sendingString = "";
                             receivingString = "";
 
-                            server.Start();
+                            try
+                            {
+                                server.Start();
+                            }
+                            catch(SocketException ex)
+                            {
+                                string tempString = "Socket Exception Error-code: ";
+                                tempString = tempString + ex.ToString();
+                                MessageBoxResult errorMessageBox = MessageBox.Show(tempString, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                            }
+                            //server.Start();
                             client = server.AcceptTcpClient();
                             client.ReceiveTimeout = TIMEOUT;
                             client.SendTimeout = TIMEOUT;
@@ -152,8 +170,10 @@ void TcpServerLoop()
                     if (client.Connected)
                     {
                         client.Close();
+                        client = null;
                     }
                     server.Stop();
+                    server = null;
                 }
                 catch { }
                 serverState = Tcp.CONNECT;
@@ -253,6 +273,7 @@ void TcpClientLoop()
                     if (client.Connected)
                     {
                         client.Close();
+                        client = null;
                     }
                 }
                 catch { }
@@ -355,7 +376,6 @@ private void serverStartButton_Click(object sender, RoutedEventArgs e)
                 serverTextboxBig.Text = "";
 
                 serverPort.IsEnabled = false;
-                serverIP.IsEnabled = false;
                 clientTab.IsEnabled = false;
 
                 sendingString = "";
@@ -385,7 +405,6 @@ private void serverStartButton_Click(object sender, RoutedEventArgs e)
 
                 clientTab.IsEnabled = true;
                 serverPort.IsEnabled = true;
-                serverIP.IsEnabled = true;
             }
         }