private void NodeReceiver_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
networkdata DType = (networkdata)e.Argument;
try
{
if (Dclient.Connected)
{
byte[] myReadBuffer = new byte[4100];
while ((Dstream.CanRead) && (!worker.CancellationPending))
{
Array.Clear(myReadBuffer, 0, 4100); //置零
int numberOfBytesRead = 0;
Dstream.Read(myReadBuffer, 0, 4); //先读包头
UInt16 PacketLength = BitConverter.ToUInt16(myReadBuffer, 2);
UInt16 head = BitConverter.ToUInt16(myReadBuffer, 0);
if (PacketLength > 4096)
{
continue;
}
if ((head != 0xABCD) && (head != 0xAD01) && (head != 0xAD02) && (head != 0xAD03) && (head != 0xAD04) &&
(head != 0xEDED) && (head != 0xEE01) && (head != 0xBB01) && (head != 0xACAC) && (head != 0x45FF))
{
continue;
}
// Incoming message may be larger than the buffer size.
do
{
int n = Dstream.Read(myReadBuffer, 4 + numberOfBytesRead, PacketLength - numberOfBytesRead);
numberOfBytesRead += n;
}while (numberOfBytesRead != PacketLength);
ParseNetworkPacket(myReadBuffer, PacketLength);
}
if (worker.CancellationPending)
{
e.Cancel = true;
}
}
}
catch (SocketException MyEx)
{
e.Result = MyEx.ErrorCode;
MainForm.ParseLock.ReleaseMutex();//ParseNetworkPacket中调用了lock
AddtoBox(Color.Black, MyEx.Message + ":" + MyEx.StackTrace.ToString() + "\r\n/>");
bConnect = false;
}
catch (IOException IOEx)
{
bConnect = false;
AddtoBox(Color.Black, "网络连接关闭!\r\n/>");
//SendStatusLabel("IO错误！网络连接关闭");
}
}
private void NodeLinker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
if (e.Cancelled)
{
ConnNodeBtn.Text = "连接节点";
string errstring = "操作已被取消！";
SendStatusLabel(errstring);
AddtoBox(Color.Black, errstring + "\r\n");
bConnect = false;
Tclient.Close();
Dclient.Close();
}
else if (e.Result != null)
{
ConnNodeBtn.Text = "连接节点";
string errstring = " 操作失败！" + "错误号：" + e.Result.ToString();
SendStatusLabel(errstring);
AddtoBox(Color.Black, errstring + "\r\n");
bConnect = false;
Tclient.Close();
Dclient.Close();
}
else
{
bConnect = true;
ConnNodeBtn.Text = "断开连接";
SendStatusLabel("已连接节点");
AddtoBox(Color.Black, "已连接节点\r\n");
if (Tclient.Connected)
{
networkdata data = new networkdata();
data.DataType = 0;
CommAnsReceiver.RunWorkerAsync(data);
}
if (Dclient.Connected)
{
networkdata data = new networkdata();
data.DataType = 1;
NodeReceiver.RunWorkerAsync(data);
}
}
}
private void DLoadDataWorker_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
networkdata data = (networkdata)e.Argument;
try
{
filereader = new BinaryReader(File.Open(data.FileNamePath, FileMode.Open));
FileInfo d = new FileInfo(data.FileNamePath);
long filelength = d.Length;
if (ACPacketHandle == null)
{
ACPacketHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
}
if (Dclient.Connected)
{
byte[] mySendBuffer = new byte[1028];
Int64 SendBytes = 0;
if (Dstream.CanWrite)
{
int numberOfBytesRead = 0;
uint head = 0xDADA;
Buffer.BlockCopy(BitConverter.GetBytes(head), 0, mySendBuffer, 0, 2);
while (((numberOfBytesRead = filereader.Read(mySendBuffer, 4, 1024)) != 0) && (!worker.CancellationPending))
{
Buffer.BlockCopy(BitConverter.GetBytes(numberOfBytesRead), 0, mySendBuffer, 2, 2);
Dstream.Write(mySendBuffer, 0, numberOfBytesRead + 4);//
SendBytes += numberOfBytesRead;
numberOfBytesRead = 0;
worker.ReportProgress((int)((double)SendBytes * 100 / filelength));
if (!ACPacketHandle.WaitOne(10000))//等待信号超时
{
Exception MyEx = new Exception("接收应答数据超时！");
throw MyEx;
}
if (worker.CancellationPending)
{
e.Cancel = true;
break;
}
}
if (worker.CancellationPending)
{
e.Cancel = true;
}
filereader.BaseStream.Seek(0, SeekOrigin.Begin);//回到文件头
byte[] totalb = filereader.ReadBytes((int)filereader.BaseStream.Length);
ushort crc = CRCHelper.CRC16byte(totalb);
filereader.Close();
head = 0xEDED;
Buffer.BlockCopy(BitConverter.GetBytes(head), 0, mySendBuffer, 0, 2);
Buffer.BlockCopy(BitConverter.GetBytes(crc), 0, mySendBuffer, 2, 2);
Dstream.Write(mySendBuffer, 0, 4);
}
}
}
catch (Exception MyEx)
{
MessageBox.Show(MyEx.Message);
AddtoBox(Color.Black, MyEx.Message + ":" + MyEx.StackTrace.ToString() + "\r\n/>");
filereader.Close();
}
}