async void ServerWindow_Closing(object sender, CancelEventArgs e)
{
if (clientList.Count > 0)
{
//Event leállítás
e.Cancel = true;
//Read in closed value
CloseReadDelegate closeRead = new CloseReadDelegate(GetCloseStarted);
bool closeStarted = (bool)this.Dispatcher.Invoke(DispatcherPriority.Normal, closeRead);
//Ha még nincs elindítva, elindítom
if (!closeStarted)
{
//Kilépés elindítva
CloseWriteDelegate closeSet = new CloseWriteDelegate(SetCloseStarted);
await this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, closeSet, true);
//Kilépési adat
Data msgToSend = new Data();
msgToSend.cmdCommand = Command.Close;
msgToSend.strName = Data.SERVER_NAME;
msgToSend.strRec = Data.PUBLIC_ID;
msgToSend.strMessage = "<<<A szerver bezar>>>";
byte[] message = msgToSend.ToByte();
//Minden felhasználónak elküldöm
foreach (ClientInfo clientInfo in clientList)
{
clientInfo.socket.BeginSend(message, 0, message.Length, SocketFlags.None,
new AsyncCallback(OnSend), clientInfo.socket);
}
}
else
{
new Thread(() =>
{
MessageBox.Show("Várakozás a kliensek lecsatlakozására.");
}).Start();
}
}
}
private void OnReceive(IAsyncResult ar)
{
try
{
Socket clientSocket = (Socket)ar.AsyncState;
clientSocket.EndReceive(ar);
//Transform the array of bytes received from the user into an
//intelligent form of object Data
Data msgReceived = new Data(byteData);
//We will send this object in response the users request
Data msgToSend = new Data();
byte[] message;
//If the message is to login, logout, or simple text message
//then when send to others the type of the message remains the same
msgToSend.cmdCommand = msgReceived.cmdCommand;
msgToSend.strName = msgReceived.strName;
msgToSend.strRec = msgReceived.strRec;
switch (msgReceived.cmdCommand)
{
case Command.Login:
//Check if the user is authorized for access
User connectedUser = new User(msgReceived.strName, msgReceived.strMessage);
if (connectedUser.SearchInList(_users) >= 0)
{
//When a user logs in to the server then we add her to our
//list of clients
msgToSend.cmdCommand = Command.Accept;
//message = msgToSend.ToByte();
//clientSocket.Send(message);
ClientInfo clientInfo = new ClientInfo();
clientInfo.socket = clientSocket;
clientInfo.strName = msgReceived.strName;
clientList.Add(clientInfo);
//Set the text of the message that we will broadcast to all users
msgToSend.strMessage = "<<<" + msgReceived.strName + " csatlakozott a szobahoz>>>";
}
else
{
//Decline the user
msgToSend.cmdCommand = Command.Decline;
msgToSend.strName = msgReceived.strName;
msgToSend.strMessage = null;
message = msgToSend.ToByte();
//Log it only on the server-side
UpdateDelegate update = new UpdateDelegate(UpdateMessage);
this.textBox1.Dispatcher.BeginInvoke(DispatcherPriority.Normal, update,
"<<<" + msgReceived.strName + " megprobalt a szobahoz csatlakozni engedely nelkul>>>" + "\r\n");
//Send the message and close the connection
clientSocket.Send(message, 0, message.Length, SocketFlags.None);
clientSocket.Shutdown(SocketShutdown.Both);
clientSocket.Close();
}
break;
case Command.Logout:
//When a user wants to log out of the server then we search for her
//in the list of clients and close the corresponding connection
int nIndex = 0;
foreach (ClientInfo client in clientList)
{
if (client.socket == clientSocket && client.strName.Equals(msgReceived.strName))
{
clientList.RemoveAt(nIndex);
break;
}
++nIndex;
}
//Send ack data before closing - Only for the disconnectiong client
//msgToSend.cmdCommand = Command.Logout;
//msgToSend.strName = msgReceived.strName;
msgToSend.strMessage = null; //A parancs és név marad, az üzenet törlődik.
message = msgToSend.ToByte();
clientSocket.Send(message, 0, message.Length, SocketFlags.None);
//Kapcsolat leállítása
clientSocket.Shutdown(SocketShutdown.Both);
clientSocket.Close();
msgToSend.strMessage = "<<<" + msgReceived.strName + " elhagyta a szobat>>>";
break;
case Command.Message:
//Set the text of the message that we will broadcast to all (if public)
msgToSend.strMessage = msgReceived.strName + " -> " +
(msgReceived.strRec.Equals(Data.PUBLIC_ID) ? "Mindenki" : msgReceived.strRec) +
" : " + msgReceived.strMessage;
break;
case Command.Upload:
//Get the correct IP
IPEndPoint upEndPoint = clientSocket.RemoteEndPoint as IPEndPoint;
//Create a delegate for upload handling
string pathUp = Data.FILES_FOLDER + (msgReceived.strRec.Equals(Data.PUBLIC_ID) ? Data.PUBLIC_ID : (msgReceived.strName + "-" + msgReceived.strRec));
Directory.CreateDirectory(pathUp);
UploadDelegate upload = new UploadDelegate(BeginUpload);
this.Dispatcher.BeginInvoke(DispatcherPriority.Normal,
upload, upEndPoint.Address, pathUp + "\\" + msgReceived.strMessage, msgReceived.strName, msgReceived.strRec);
msgToSend.strMessage = "<<<" + msgReceived.strName + " megkezdte a '" + System.IO.Path.GetFileName(msgReceived.strMessage) + "' nevu falj feltolteset>>>";
break;
case Command.StartDownload:
//Get the correct IP
IPEndPoint downEndPoint = clientSocket.RemoteEndPoint as IPEndPoint;
//Delete message
msgToSend.strMessage = null;
//Create a delegate for upload handling
string pathDown = Data.FILES_FOLDER + (msgReceived.strName.Equals(Data.PUBLIC_ID) ? Data.PUBLIC_ID : (msgReceived.strName + "-" + msgReceived.strRec));
Directory.CreateDirectory(pathDown);
DownloadDelegate download = new DownloadDelegate(BeginDownload);
this.Dispatcher.BeginInvoke(DispatcherPriority.Normal,
download, downEndPoint.Address, pathDown + "\\" + msgReceived.strMessage);
msgToSend.strMessage = "<<<" + msgReceived.strRec + " megkezdte a '" + System.IO.Path.GetFileName(msgReceived.strMessage) + "' nevu falj letolteset>>>";
break;
case Command.DownloadAck:
//Set the text of the message that we will broadcast to all (if public)
msgToSend.strMessage = "<<<" + msgReceived.strRec + " befejezte a '" + System.IO.Path.GetFileName(msgReceived.strMessage) + "' nevu falj letolteset>>>";
break;
case Command.DownloadList:
//Delete message
msgToSend.strMessage = null;
//Create a delegate for upload handling
string pathDirectory = Data.FILES_FOLDER + (msgReceived.strRec.Equals(Data.PUBLIC_ID) ? Data.PUBLIC_ID : (msgReceived.strRec + "-" + msgReceived.strName));
Directory.CreateDirectory(pathDirectory);
//Collect all filenames
bool notFirstDownFiles = false;
foreach (string file in Directory.GetFiles(pathDirectory))
{
if (notFirstDownFiles)
{
msgToSend.strMessage += "*";
}
else
{
notFirstDownFiles = true;
}
msgToSend.strMessage += System.IO.Path.GetFileName(file);
}
message = msgToSend.ToByte();
//Send the filenames
clientSocket.BeginSend(message, 0, message.Length, SocketFlags.None,
new AsyncCallback(OnSend), clientSocket);
break;
case Command.List:
//Send the names of all users in the chat room to the new user
msgToSend.cmdCommand = Command.List;
msgToSend.strName = msgReceived.strName;
msgToSend.strMessage = null;
//Collect the names of the user in the chat
bool notFirstList = false;
foreach (ClientInfo client in clientList)
{
//To keep things simple we use asterisk as the marker to separate the user names
if (notFirstList)
{
msgToSend.strMessage += "*";
}
else
{
notFirstList = true;
}
msgToSend.strMessage += client.strName;
}
message = msgToSend.ToByte();
//Send the name of the users in the chat room
clientSocket.BeginSend(message, 0, message.Length, SocketFlags.None,
new AsyncCallback(OnSend), clientSocket);
break;
}
if (!(msgToSend.cmdCommand == Command.List || msgToSend.cmdCommand == Command.DownloadList || msgToSend.cmdCommand == Command.Decline)) //List and decline messages are not broadcasted
{
message = msgToSend.ToByte();
foreach (ClientInfo clientInfo in clientList)
{
if (clientInfo.socket != clientSocket || msgToSend.cmdCommand != Command.Login)
{
//A publikus az broadcast, amúgy csak a 2 partnernek megy. -> Figyelni kell, hogy PUBLIC legyen alapból a cél, és feladó is legyen mindig.
if (msgToSend.strRec.Equals(Data.PUBLIC_ID) || clientInfo.strName.Equals(msgReceived.strRec) || clientInfo.strName.Equals(msgReceived.strName))
{
//Send the message to all users
clientInfo.socket.BeginSend(message, 0, message.Length, SocketFlags.None,
new AsyncCallback(OnSend), clientInfo.socket);
//clientInfo.socket.Send(message, 0, message.Length, SocketFlags.None);
}
}
}
UpdateDelegate update = new UpdateDelegate(UpdateMessage);
this.textBox1.Dispatcher.BeginInvoke(DispatcherPriority.Normal, update,
msgToSend.strMessage + "\r\n");
}
//If the user is logging out or declined, then we need not listen from her
if (!(msgReceived.cmdCommand == Command.Logout || msgToSend.cmdCommand == Command.Decline))
{
//Start listening to the message send by the user
clientSocket.BeginReceive(byteData, 0, byteData.Length, SocketFlags.None, new AsyncCallback(OnReceive), clientSocket);
}
//Check if it's the last logout
if (msgReceived.cmdCommand == Command.Logout && clientList.Count <= 0)
{
//Check if we started a close
CloseReadDelegate closeRead = new CloseReadDelegate(GetCloseStarted);
bool closeStarted = (bool)this.Dispatcher.Invoke(DispatcherPriority.Normal, closeRead);
//Finish the close
if (closeStarted)
{
CloseDelegate closeRun = new CloseDelegate(CloseRun);
this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, closeRun);
}
}
}
catch (Exception ex)
{
new Thread(() =>
{
MessageBox.Show(ex.Message, "Server Receive");
}).Start();
}
}
