Command support improvements

SamaPager_Client/Client.cs

@@ -5,6 +5,7 @@ using System.Net;
 using System.Net.Sockets;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows.Forms;
 
 namespace SamaPager_Client
 {
@@ -41,6 +42,23 @@ namespace SamaPager_Client
             UdpStack.Send(msgData, msgData.Length, serverEndPoint);
         }
 
+        internal string SendCommand(string command)
+        {
+            byte[] msgData = Encoding.UTF8.GetBytes(command);
+            UdpStack.Send(msgData, msgData.Length, serverEndPoint);
+            try
+            {
+                UdpStack.Client.ReceiveTimeout = 5000;
+                IPEndPoint receiveEndPoint = serverEndPoint;
+                byte[] receivedBytes = UdpStack.Receive(ref receiveEndPoint);
+                return $"Server replied: {Encoding.UTF8.GetString(receivedBytes)}";
+            }
+            catch(Exception ex)
+            {
+                return $"ERROR: {ex.Message}";
+            }
+        }
+
         internal void KillClient()
         {
             this.UdpStack.Close();