public static async Task<bool> GetFile(IRequest request, string fname, NetworkStream stream, Client.FileRepresentative representative, TaskScheduler scheduler)
{
// send the message to the server
await MessageUtils.SendMsg(request, stream);
// wait for and read the response
IResponse response = await MessageUtils.RecvMsg(stream) as GetFileResponse;
if (response == null)
return false;
if (response.IsOK)
{
var cts = new CancellationTokenSource();
EventHandler cancelEvent = (_, __) => cts.Cancel();
representative._cancel.Click += cancelEvent;
FileStream file = null;
try
{
file = new FileStream(RelativePath + fname, FileMode.OpenOrCreate);
var initialCount = 0;
Action<int> onProgress = async (count) =>
{
await scheduler.SwitchTo();
long newCount = Interlocked.Add(ref initialCount, count);
representative.UpdateBar((int)(((float)newCount / (float)response.ResponseSize) * 100));
};
await MessageUtils.ReceiveFile(stream, file, cts.Token, onProgress);
return true;
}
catch (Exception ex)
{
return false;
}
finally
{
representative._cancel.Click -= cancelEvent;
if (file != null)
file.Close();
}
}
return false;
}
