private async void BeginAnnounceAsync()
{
var model = new AnnounceModel
{
Id = Guid.NewGuid(),
Sender = Environment.MachineName,
Filename = Path.GetFileName(FilePath),
FileSize = new FileInfo(FilePath).Length,
Port = _port
};
var jsonModel = JsonConvert.SerializeObject(model);
var rawModel = Encoding.Unicode.GetBytes(jsonModel);
var ipEndPoint = new IPEndPoint(IPAddress.Broadcast, Port);
try
{
while (true)
{
await _udpClient.SendAsync(rawModel, rawModel.Length, ipEndPoint);
await Task.Delay(700);
}
}
catch (ObjectDisposedException)
{
}
}
public override int Run()
{
var waitForFile = true;
IPEndPoint remoteEndPoint = null;
while (waitForFile)
{
var received = _udpClient.ReceiveAsync().Result;
var rawText = Encoding.Unicode.GetString(received.Buffer);
_model = JsonConvert.DeserializeObject <AnnounceModel>(rawText);
if (_rejectedFiles.Contains(_model.Id))
{
continue;
}
remoteEndPoint = received.RemoteEndPoint;
var sender = _model.Sender ?? Dns.GetHostEntryAsync(remoteEndPoint.Address).Result.HostName;
var accepted = _acceptFileCallback(_model.Filename, _model.FileSize, sender, remoteEndPoint.Address);
if (accepted)
{
waitForFile = false;
}
else
{
_rejectedFiles.Add(_model.Id);
}
}
if (FilePath == null)
{
FilePath = _model.Filename;
}
using (var tcpClient = new TcpClient())
{
tcpClient.ConnectAsync(remoteEndPoint.Address, _model.Port).Wait();
try
{
using (var stream = tcpClient.GetStream())
{
var code = SendAccept(stream);
if (code != ExitCodes.Ok)
{
return(code);
}
code = ReceiveFile(stream);
return(code);
}
}
catch (IOException e)
{
Console.WriteLine("Can not read from remote source: " + e.Message);
return(ExitCodes.RemoteStreamClosed);
}
}
}