public void HandleTransferAccepted(object sender, EventArgs e)
{
CLanFileTransferRequest req = sender as CLanFileTransferRequest;
CLanFileTransfer cft = new CLanFileTransfer(req.From, req.Files, CLanTransferType.RECEIVE);
cft.Start(); // Start the working thread, that will also ask for the save directory
}
public void HandleTransferRefused(object sender, EventArgs e)
{
// Decline the request
CLanFileTransferRequest req = sender as CLanFileTransferRequest;
byte[] toSend = new Message(App.me, MessageType.NACK, "Maybe next time :/").ToByteArray();
Send(toSend, socketBuffer[req.From]);
// Flush the buffer
socketBuffer.Remove(req.From);
}
public void HandleAccept(Socket client)
{
// This method is already being executed in a separate thread
Trace.WriteLine("New connection!");
byte[] data = Receive(client);
Message m = Message.GetMessage(data);
User source = m.sender;
socketBuffer.Add(source, client);
CLanFileTransferRequest req = CLanFileTransferRequest.GetRequest(m.message.ToString());
req.TransferAccepted += HandleTransferAccepted;
req.TransferRefused += HandleTransferRefused;
req.Prompt();
}
private void WorkerStartSend(object sender, DoWorkEventArgs e)
{
Trace.WriteLine("CTF.CS - WORKERSTARTSEND");
// The sender will see the transfer window with a "waiting state" until the other answers
try
{
currentSocket = TCPManager.GetConnection(Other);
CLanFileTransferRequest req = new CLanFileTransferRequest(App.me, Other, Files);
byte[] requestData = new Message(App.me, MessageType.SEND, req).ToByteArray();
if (requestData.Length > 65535)
{
// Will not fit a UDP packet, inform the user and make him select less files
MessageBoxResult result = MessageBox.Show(
"You are trying to send too many files. Cannot complete transfer.",
"Oops, something went wrong...",
MessageBoxButton.OK,
MessageBoxImage.Error
);
e.Cancel = true;
return;
}
Store();
TCPManager.Send(requestData, currentSocket);
byte[] responseData = TCPManager.Receive(currentSocket);
if (responseData != null)
{
Message responseMessage = Message.GetMessage(responseData);
switch (responseMessage.messageType)
{
case MessageType.ACK:
// Destination accepted the transfer
// Show the window with all file transfers
TCPManager.SendFiles(this);
break;
case MessageType.NACK:
// Destination refused the transfer
Trace.WriteLine("Destination refused the transfer");
e.Cancel = true; // Suicide
break;
default:
Trace.WriteLine("This message should not be here, check your code");
break;
}
}
else
{
Trace.WriteLine("An error occured receiving from Other");
e.Cancel = true; // Suicide
}
// CancellationPending is checked by the SendFiles, that terminates when it is set to True
if (bw.CancellationPending)
{
e.Cancel = true;
}
}
catch (Exception ex)
{
Trace.WriteLine("Socket exception sending request");
e.Cancel = true;
return;
}
}
