void args_Completed(object sender, SocketAsyncEventArgs e)
{
if (ConnectionInfo.CurrentServer != null && ConnectionInfo.CurrentServer.IsConnected)
{
SocketAsyncEventArgs args = null;
UserToken userToken = null;
PacketInfo packetInfo = null;
if (e.SocketError != SocketError.Success)
{
return;
}
//데이터 사용량 누적
if (e.BytesTransferred > 0)
{
AppLoader.CellularDataUtil.SumUsageCellularData(e.BytesTransferred);
}
//이미지를 받다가 커넥션이 끊길때 에러 방지를 위해
if (ConnectionInfo.TcpSocket.Connected && ConnectionInfo.CurrentServer != null &&
ConnectionInfo.CurrentServer.IsConnected &&
this.IsRealTimeScreen)
{
switch (e.LastOperation)
{
case SocketAsyncOperation.SendTo:
if (imageUdpSocket != null)
{
userToken = e.UserToken as UserToken;
packetInfo = userToken.PacketInfo;
byte[] buff = new byte[Constant.UDP_BUFFER_SIZE];
UserToken ut = new UserToken(packetInfo, userToken.callback);
args = new SocketAsyncEventArgs();
args.UserToken = ut;
args.RemoteEndPoint = new IPEndPoint(IPAddress.Parse(ConnectionInfo.CurrentServer.ServerIP), ConnectionInfo.CurrentServer.UdpPort);;
args.SetBuffer(buff, 0, Constant.UDP_BUFFER_SIZE);
args.Completed += args_Completed;
_clientDone.Reset();
imageUdpSocket.ReceiveFromAsync(args);
bool ret = _clientDone.WaitOne(1000); //1초 동안 수신을 대기함.
if (!ret || ImageQualityType != packetInfo.ImageQualityType)
{
//실패한 소켓 수신객체의 콜백 삭제
args.Completed -= args_Completed;
//이미지 수신 실패 이벤트 발생
OnImageReceiveFailed(ImageQualityType != packetInfo.ImageQualityType);
}
}
break;
case SocketAsyncOperation.ReceiveFrom:
if (e.BytesTransferred > PACKET_FRAME_SIZE)
{
byte[] rcvbuff = e.Buffer;
int header = BitConverter.ToInt32(rcvbuff, 0);
int totSize = BitConverter.ToInt32(rcvbuff, 4);
int packetSize = BitConverter.ToInt32(rcvbuff, 8);
int seq = BitConverter.ToInt32(rcvbuff, 12);
bool isXor = Convert.ToBoolean(BitConverter.ToInt32(rcvbuff, 16));
int footer = BitConverter.ToInt32(rcvbuff, 20 + packetSize);
if (totSize == 0 || packetSize == 0)
{
System.Diagnostics.Debug.WriteLine("패킷이 0인 경우 => 발생하면 안되는데...");
Thread.Sleep(300);
break;
}
if (totalSize != totSize && totSize > 0 && totalSize > 0)
{
System.Diagnostics.Debug.WriteLine("수신 실패이후 다시 시작전에 받아진 데이터 .... 무시하고 넘어감");
break;
}
//System.Diagnostics.Debug.WriteLine(seq + "번 이미지 수신");
if (header == Constant.PACKET_VELOSTEP_HEADER && //헤더 체크
totalSize < 10 * 1024 * 1024 && // 10MB미만만 허용
packetSize > 0 && seq >= 0 &&
footer == Constant.PACKET_VELOSTEP_FOOTER)
{
if (seq == 0 || currImgBytes == null)
{
totalSize = totSize;
currImgBytes = new byte[totalSize];
}
//이미지 데이터 복사
Buffer.BlockCopy(e.Buffer, 20, currImgBytes, (Constant.UDP_BUFFER_SIZE - PACKET_FRAME_SIZE) * seq, packetSize);
//System.Diagnostics.Debug.WriteLine("전송된길이:{0}, 시퀀스:{1}, 패킷길이:{2}, 현재쓸포인터{3}", new object[] { e.BytesTransferred, seq, packetSize, (Constant.UDP_BUFFER_SIZE - PACKET_FRAME_SIZE) * seq });
if (seq * (Constant.UDP_BUFFER_SIZE - PACKET_FRAME_SIZE) + packetSize >= totalSize)
{
//완료
seq = 0;
totalSize = 0;
isRefreshAll = false;
userToken = e.UserToken as UserToken;
//이미지 화면 표시 요청
((CallbackHandler)userToken.callback)(new ImageInfo()
{
IsXorImage = isXor, ImageBytes = currImgBytes
});
}
else
{
seq++;
}
//이전 토큰
userToken = e.UserToken as UserToken;
//신규 패킷
packetInfo = new PacketInfo();
packetInfo.PacketType = PacketTypes.RequestImage;
packetInfo.DeviceType = DeviceType;
packetInfo.ButtonType = ButtonTypes.None;
packetInfo.AccessCode = ConnectionInfo.CurrentServer.AccessCode;
//seq가 0인 경우만 이미지 품질 재적용
packetInfo.ImageQualityType = seq == 0 ? ImageQualityType : userToken.PacketInfo.ImageQualityType;
packetInfo.Seq = seq;
packetInfo.Flag = isRefreshAll ? 1 : 0; //xor auto
byte[] packet = packetInfo.CachedPacket;
args = new SocketAsyncEventArgs();
args.UserToken = new UserToken(packetInfo, userToken.callback);
args.SetBuffer(packet, 0, packet.Length);
args.Completed += args_Completed;
args.RemoteEndPoint = e.RemoteEndPoint;
//이벤트 시그널
_clientDone.Set();
//다음 받기 요청
imageUdpSocket.SendToAsync(args);
lastReceiveSeq = seq;
//if (seq > 0)
//{
// //System.Diagnostics.Debug.WriteLine(lastReceiveSeq + "번 이미지 요청.");
//}
//if (seq == 0)
//{
// System.Diagnostics.Debug.WriteLine("다시시작.......................");
// System.Diagnostics.Debug.WriteLine(stw.ElapsedMilliseconds);
//}
//else
//{
// System.Diagnostics.Debug.WriteLine(stw.ElapsedMilliseconds);
//}
}
else
{
System.Diagnostics.Debug.WriteLine("패킷이 잘못된 경우");
}
}
else
{
System.Diagnostics.Debug.WriteLine("화면 변경 없음");
}
break;
}
}
}
}
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();
});
}
}
