private void ProcessSendFile(SocketAsyncEventArgs e)
{
var bytesRead = e.BytesTransferred;
if (bytesRead > 0 && e.SocketError == SocketError.Success)
{
var receiveData = e.Buffer.Skip(e.Offset).Take(bytesRead).ToArray();
var dataList = PacketUtils.SplitBytes(receiveData, PacketUtils.ClientRequestFileTag());
if (dataList != null)
{
foreach (var request in dataList)
{
if (PacketUtils.IsPacketComplete(request))
{
int startPosition = PacketUtils.GetRequestFileStartPosition(request);
var packetSize = PacketUtils.GetPacketSize(_serverPath, _downloadChannelsCount);
if (packetSize != 0)
{
byte[] filedata = FileUtils.GetFile(_serverPath, startPosition, packetSize);
byte[] packetNumber = BitConverter.GetBytes(startPosition / packetSize);
Console.WriteLine("Receive File Request PacketNumber: " + startPosition / packetSize);
if (filedata != null)
{
//ready to send back to Client
byte[] segmentedFileResponseData = PacketUtils.PacketData(PacketUtils.ServerResponseFileTag(), filedata, packetNumber);
Array.Clear(e.Buffer, e.Offset, e.Count);
Array.Copy(segmentedFileResponseData, 0, e.Buffer, e.Offset, segmentedFileResponseData.Length);
e.Completed -= ProcessFilePosition_Completed;
e.Completed += ProcessSendFile_Completed;
if (!e.AcceptSocket.SendAsync(e))
{
CloseClientSocket(e);
}
}
}
}
}
}
}
else
{
CloseClientSocket(e);
}
}
void udpSockArgs_Completed(object sender, SocketAsyncEventArgs e)
{
//소켓 결과가 성공이면 받을 준비
if (e.SocketError == SocketError.Success)
{
//데이터 사용량 누적
if (e.BytesTransferred > 0)
{
AppLoader.CellularDataUtil.SumUsageCellularData(e.BytesTransferred);
}
switch (e.LastOperation)
{
case SocketAsyncOperation.SendTo:
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
//입력 비활성화
findServerBtn.IsEnabled = false;
portTxtBox.IsEnabled = false;
ItemViewOnPage.IsEnabled = false;
//진행상태 표시
UIUtils.SetVisibility(labelProgressBar, true);
UIUtils.SetVisibility(findProgressBar, true);
try
{
//검색 로딩창 표시
bw.RunWorkerAsync();
}
catch (InvalidOperationException ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
int port = ((DnsEndPoint)e.RemoteEndPoint).Port;
byte[] buffer = new byte[128];
e.SetBuffer(buffer, 0, buffer.Length);
e.RemoteEndPoint = new IPEndPoint(IPAddress.Any, port);
udpSocket.ReceiveFromAsync(e);
});
break;
case SocketAsyncOperation.ReceiveFrom:
ServerInfo serverInfo = PacketUtils.ResolveServerPacket(PacketTypes.FindServer, e) as ServerInfo;
if (serverInfo != null)
{
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
//수신된 서버 추가
serverInfoList.Add(serverInfo);
if (currentHostname.Contains("."))
{
string host = currentHostname.Substring(currentHostname.LastIndexOf(".") + 1);
if (host == "255")
{
//나머지 수신 대기
udpSocket.ReceiveFromAsync(e);
}
}
try
{
//수신이 되면 bw 취소
if (bw.WorkerSupportsCancellation)
{
bw.CancelAsync();
}
}
catch (InvalidOperationException ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
}
});
}
break;
}
}
else
{
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
switch (e.SocketError)
{
case SocketError.HostNotFound:
MessageBox.Show(I18n.GetString("AppMessageNotFoundHost"), I18n.GetString("AppMessageNotification"), MessageBoxButton.OK);
break;
case SocketError.HostUnreachable:
case SocketError.NetworkUnreachable:
case SocketError.AccessDenied:
MessageBox.Show(I18n.GetString("AppMessageUnreachableHost"), I18n.GetString("AppMessageNotification"), MessageBoxButton.OK);
break;
default:
break;
}
hostTxtBox.Focus();
});
}
}
