protected override Task OnFileReciveBegining(RecieveOfFileTransferRequestEventArgs args)
{
Func <object, RecieveOfFileTransferRequestEventArgs, Task> handlerEvent = RecieveOfFileTransferRequestEvent;
if (handlerEvent == null)
{
return(Task.FromResult(false));
}
try
{
Delegate[] invocationList = handlerEvent.GetInvocationList();
var handlerTasks = new Task[invocationList.Length];
for (int i = 0; i < invocationList.Length; i++)
{
handlerTasks[i] = ((Func <object, RecieveOfFileTransferRequestEventArgs, Task>)invocationList[i])(this, args);
}
return(Task.WhenAll(handlerTasks));
}
catch (Exception ex)
{
args.TryAllowContinueRegistration(false, null);
return(Task.CompletedTask);
}
}
public override async Task <bool> RecieveOfFileTransferRequest(FileRecieveRequest request, IPEndPoint endPoint, ContactForm contact,
ResultOfOperation result)
{
var args = new RecieveOfFileTransferRequestEventArgs()
{
FileName = request.Name,
Login = contact.Login,
Ip = endPoint.Address,
Length = request.Length
};
await OnFileReciveBegining(args).ConfigureAwait(false);
var remoteFile = args.RemoteFileStream;
if (args.IsAllow)
{
if (remoteFile == null)
{
var dirFull = DirForFileSaving + @"\" + request.Name;
var stream = new FileStream(dirFull, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);
await Task.Run(() => stream.SetLength(request.Length)).ConfigureAwait(false);
MoleClientSender sender;
if (!Senders.TryGetValue(contact.Login, out sender))
{
sender = new MoleClientSender(contact, PossibleAlgs, this, true);
Senders.TryAdd(contact.Login, sender);
}
await sender.Inicialize(endPoint).ConfigureAwait(false);
await sender.GetSessionKey().ConfigureAwait(false);
await sender.AuthenticateAsync().ConfigureAwait(false);
remoteFile = new RemoteFileStreamMole(sender, stream, request.Name);
await remoteFile.InitializeAsync().ConfigureAwait(false);
}
await
OnFileRecievingPrepared(new FileRecievingPreparedEventArgs(request.Name, request.Length, remoteFile))
.ConfigureAwait(false);
result.OperationWasFinishedSuccessful = true;
return(true);
}
result.ErrorMessage = "Пользователь отказался принять файл.";
result.OperationWasFinishedSuccessful = false;
return(false);
}
protected abstract Task OnFileReciveBegining(RecieveOfFileTransferRequestEventArgs args);
