private static async void StartServer(object sender, RoutedEventArgs e)
{
if (System.Net.NetworkInformation.IPGlobalProperties.GetIPGlobalProperties().GetActiveUdpListeners().Any(p => p.Port == 15000))
{
if (!simultaneousErrorDialog.IsVisible)
{
await window.ShowMetroDialogAsync(simultaneousErrorDialog);
}
simultaneousErrorDialog.MessageText.Content = "Error when starting server- UDP port already occupied. Check whether there is another instance running";
Console.Out.WriteLine("[NetworkManager] error when starting server- UDP port already occupied. Check whether there is another instance running");
return;
}
server = new Server();
connected = true;
clientNumber = 0;
clientCount = 0;
//client view object for displaying in the network page
ClientViewObject.Add(clientNumber, NetworkUtil.GetMachineName(), NetworkUtil.GetLocalIPAddress());
//TODO: add -= when server shut down?
server.MessageReceivedFromClientEvent += MessageReceivedFromClient;
server.ClientConnectedEvent += ClientConnected;
server.ClientDisconnectedEvent += ClientDisconnected;
//load all patient in registered patient after starting server, the client will load the patient via requesting
PatientManager.LoadAllPatientFromSchedular();
PatientManager.LoadAllPatient();
//load all the injection after starting server, the client will load the injection via contacting with server
InjectionsManager.loadAllInjections();
if (twoChoiceDialog.IsVisible)
{
await window.HideMetroDialogAsync(twoChoiceDialog);
}
await window.ShowMessageAsync("No server found. \nStarted as server instead!", "Server Name: " + NetworkUtil.GetMachineName() + "\nServer IP:" + NetworkUtil.GetLocalIPAddress());
}
/// <summary>
/// Handle message if client send anything to the server
///
/// The message contain two part,
/// first part is a identifier (string) to distinguish what type of message is it
/// second part is the message content
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
public static void MessageReceivedFromClient(object sender, MessageReceivedFromClientEventArgs args)
{
string[] messages = Encoding.UTF8.GetString(args.Data).Split(new char[] { '_' }, 2);
try
{
Console.Out.WriteLine("[NetworkManager-Server] Recieved message type: " + messages[0]);
Console.Out.WriteLine("[NetworkManager-Server] The message is: " + messages[1]);
}
catch (Exception e)
{
Console.Error.WriteLine(e);
}
switch (messages[0])
{
case "ConnectionSucessful":
Console.Out.WriteLine("[NetworkManager-Server] New connection established with client IP: {0}, Name: {1}", args.IpPort, messages[1]);
window.Dispatcher.Invoke(() =>
{
//Send the clientNumber to the client
clientCount += 1;
Console.Out.WriteLine("[NetworkManager-Server] Setting client with IPPort: {0} as client number {1}", args.IpPort, clientCount);
server.TCPSendMessage(args.IpPort, "setClientNumber", clientCount.ToString());
//Add the client view object for networking page
ClientViewObject.Add(clientCount, messages[1], args.IpPort);
});
break;
case "modInjection":
Console.Out.WriteLine("[NetworkManager-Server] Receiving Mod Injection Request from client, proceed to modify injection");
window.Dispatcher.Invoke(() =>
{
server.TCPBroadcastMessage("modInjection", messages[1]);
InjectionsManager.modInjection(XElement.Parse(messages[1]));
});
break;
case "requestInitialInjection":
Console.Out.WriteLine("[NetworkManager-Server] Receiving Initial Injection Request from client, proceed to send all injection to client with ip: {0}", args.IpPort);
foreach (Injection injection in InjectionsManager.injections)
{
server.TCPSendMessage(args.IpPort, "modInjection", injection.toXML().ToString());
}
break;
case "requestInitialPatient":
Console.Out.WriteLine("[NetworkManager-Server] Receiving Initial Patient Request from client, proceed to send all patient to client with ip: {0}", args.IpPort);
foreach (Patient patient in PatientManager.Patients)
{
server.TCPSendMessage(args.IpPort, "addPatient", patient.toXML().ToString());
}
break;
//////////////////////////////////////////////////
//////// Obsolete //////////////////////////
case "dischargeInjection":
Console.Out.WriteLine("[NetworkManager-Server] Receiving discharge Injection Request from client, proceed to discharge injection");
window.Dispatcher.Invoke(() =>
{
server.TCPBroadcastMessage("dischargeInjection", messages[1]);
#pragma warning disable CS0618 // Type or member is obsolete
InjectionsManager.dischargeInjection(messages[1]);
#pragma warning restore CS0618 // Type or member is obsolete
});
break;
//////////////////////////////////////////////////
case "changePatientStatus":
Console.Out.WriteLine("[NetworkManager-Server] Receiving changePatientStatus Request from client, proceed to change PatientStatus");
window.Dispatcher.Invoke(() =>
{
server.TCPBroadcastMessage("changePatientStatus", messages[1]);
//try to splite the message back to (accessionNumber, patientStatus)
if (messages[1].Split('^').Length == 2)
{
InjectionsManager.changePatientStatus(messages[1].Split('^')[0], messages[1].Split('^')[1]);
}
else
{
Console.Out.WriteLine("[NetworkManager-Server_changePatientStatus()] Corrupted changePatientStatus message, require 2 input. Message: " + messages[1]);
}
});
break;
case "removeInjection":
Console.Out.WriteLine("[NetworkManager-Server] Receiving remove Injection Request from client, proceed to remove injection");
window.Dispatcher.Invoke(() =>
{
server.TCPBroadcastMessage("removeInjection", messages[1]);
InjectionsManager.removeInjection(messages[1]);
});
break;
default:
Console.Error.WriteLine("[NetworkManager-Server] Unhandled message type: " + messages[0]);
break;
}
try
{
window.Dispatcher.Invoke(() =>
{
ClientViewObject.GetClientViaIP(args.IpPort).UpdateMessage(messages[0], messages[1]);
});
}
catch (Exception e)
{
Console.Error.WriteLine(e);
}
}
