private static IEnumerator<Int32> PipeServerAsyncEnumerator(AsyncEnumerator ae) {
// Each server object performs asynchronous operation on this pipe
using (var pipe = new NamedPipeServerStream(
"Echo", PipeDirection.InOut, -1, PipeTransmissionMode.Message,
PipeOptions.Asynchronous | PipeOptions.WriteThrough)) {
// Asynchronously accept a client connection
pipe.BeginWaitForConnection(ae.End(), null);
yield return 1;
// A client connected, let's accept another client
var aeNewClient = new AsyncEnumerator();
aeNewClient.BeginExecute(PipeServerAsyncEnumerator(aeNewClient),
aeNewClient.EndExecute);
// Accept the client connection
pipe.EndWaitForConnection(ae.DequeueAsyncResult());
// Asynchronously read a request from the client
Byte[] data = new Byte[1000];
pipe.BeginRead(data, 0, data.Length, ae.End(), null);
yield return 1;
// The client sent us a request, process it
Int32 bytesRead = pipe.EndRead(ae.DequeueAsyncResult());
// Just change to upper case
data = Encoding.UTF8.GetBytes(
Encoding.UTF8.GetString(data, 0, bytesRead).ToUpper().ToCharArray());
// Asynchronously send the response back to the client
pipe.BeginWrite(data, 0, data.Length, ae.End(), null);
yield return 1;
// The response was sent to the client, close our side of the connection
pipe.EndWrite(ae.DequeueAsyncResult());
} // Close happens in a finally block now!
}
private void BeginReadCallback(IAsyncResult iar)
{
pipeServer = (NamedPipeServerStream)iar.AsyncState;
int bytesRead = pipeServer.EndRead(iar);
if (bytesRead > 0) {
receiveMessage += System.Text.Encoding.UTF8.GetString(receiveBuffer, 0, receiveBuffer.Length);
if (pipeServer.IsMessageComplete) {
OnReceiveMessageComplete(receiveMessage);
receiveMessage = "";
}
}
pipeServer.BeginRead(receiveBuffer, 0, receiveBuffer.Length, BeginReadCallback, pipeServer);
}
private void bw_DoWork(object sender, DoWorkEventArgs e)
{
int count = 0;
BackgroundWorker worker = sender as BackgroundWorker;
const int BufferSize = 256;
System.Diagnostics.Debug.WriteLine("Start Background Worker");
if (dataSource == SourceFrom.UART)
{
SkytraqGps gps = e.Argument as SkytraqGps;
byte[] buff = new byte[BufferSize];
try
{
while (!worker.CancellationPending)
{
int l = gps.ReadLineNoWait(buff, 256, 1000);
if (buff[0] != 0xa0 || buff[1] != 0xa1 || buff[4] != 0x64 || buff[5] != 0xfd)
{
continue;
}
++count;
worker.ReportProgress(count, new IQInfo(
buff[6],
(UInt32)buff[7] << 8 | (UInt32)buff[8],
buff[9],
buff[10],
buff[11],
buff[12],
buff[13],
(Int32)((UInt32)buff[14] << 24 | (UInt32)buff[15] << 16 | (UInt32)buff[16] << 8 | (UInt32)buff[17]),
(Int16)((UInt32)buff[18] << 8 | (UInt32)buff[19]),
(Int16)((UInt32)buff[20] << 8 | (UInt32)buff[21])));
//Console.WriteLine("{0},{1},{2},{3},{4},{5}",
// gpsType, nmeaSvid, integrateionTime, doppler, iValue, qValue);
}
}
catch (Exception ep)
{
Console.WriteLine(ep.ToString());
}
}
else
{
//Initial Namedpipe ===========================================
while (!worker.CancellationPending)
{
System.Diagnostics.Debug.WriteLine("Pipe name :" + Program.pipeName);
using (NamedPipeServerStream pipeStream = new NamedPipeServerStream(Program.pipeName,
PipeDirection.In, 1, PipeTransmissionMode.Byte, PipeOptions.Asynchronous))
{
ReceiveStatus rs = ReceiveStatus.None;
int packageSize = 0;
int ptr = 0;
int sharpLen = 0;
byte[] buff = new byte[BufferSize];
System.Diagnostics.Debug.WriteLine("Create Named Pipe :" + Program.pipeName);
//Wait for connection
while (!worker.CancellationPending)
{
try
{
if (!pipeStream.IsConnected)
{
//pipeStream.WaitForConnection();
var asyncResult = pipeStream.BeginWaitForConnection(null, null);
while (!worker.CancellationPending)
{
if (asyncResult.AsyncWaitHandle.WaitOne(5))
{
pipeStream.EndWaitForConnection(asyncResult);
break;
}
}
}
}
catch (Exception ep)
{
Console.WriteLine(ep.ToString());
Thread.Sleep(10);
break;
}
if (worker.CancellationPending)
{
return;
}
var asyncResult2 = pipeStream.BeginRead(buff, ptr, 1, null, null);
//Wait for data in
while (!worker.CancellationPending)
{
if (asyncResult2.AsyncWaitHandle.WaitOne(5))
{
pipeStream.EndRead(asyncResult2);
++ptr;
break;
}
}
if (worker.CancellationPending)
{
return;
}
System.Diagnostics.Debug.Write(buff[ptr - 1]);
if (rs == ReceiveStatus.None && buff[ptr - 1] == '#')
{
rs = ReceiveStatus.GetSharpCommand;
}
else if (rs == ReceiveStatus.GetSharpCommand && buff[ptr - 1] == 0x0d)
{
rs = ReceiveStatus.GetSharpSlashR;
sharpLen = ptr - 1;
}
else if (rs == ReceiveStatus.GetSharpSlashR && buff[ptr - 1] == 0x0a)
{
rs = ReceiveStatus.FinishSharpCommand;
}
else if (rs == ReceiveStatus.GetSharpSlashR && buff[ptr - 1] != 0x0a)
{
rs = ReceiveStatus.GetSharpCommand;
}
else if (rs == ReceiveStatus.None && buff[ptr - 1] == 0xA0)
{
rs = ReceiveStatus.GetA0;
}
else if (rs == ReceiveStatus.GetA0 && buff[ptr - 1] == 0xA1)
{
rs = ReceiveStatus.GetA1;
}
else if (rs == ReceiveStatus.GetA1)
{
packageSize = buff[ptr - 1] << 8;
rs = ReceiveStatus.GetSize1;
}
else if (rs == ReceiveStatus.GetSize1)
{
packageSize |= buff[ptr - 1];
rs = ReceiveStatus.GetSize2;
}
else if (rs == ReceiveStatus.GetSize2)
{
if (ptr > (7 + packageSize) || ptr == BufferSize)
{
ptr = 0;
rs = ReceiveStatus.None;
}
if (ptr == (6 + packageSize) && buff[ptr - 1] == 0x0d)
{
rs = ReceiveStatus.GetSlashR;
}
}
else if (rs == ReceiveStatus.GetSlashR && buff[ptr - 1] == 0x0a)
{
rs = ReceiveStatus.FinishBinCommand;
}
else if (buff[ptr - 1] == 0x0d)
{
rs = ReceiveStatus.ErrorSlashR;
}
else if (rs == ReceiveStatus.ErrorSlashR && buff[ptr - 1] == 0x0a)
{
rs = ReceiveStatus.None;
ptr = 0;
}
if (rs == ReceiveStatus.FinishBinCommand)
{
if (buff[0] != 0xa0 || buff[1] != 0xa1 || buff[4] != 0x64 || buff[5] != 0xfd)
{
rs = ReceiveStatus.None;
ptr = 0;
continue;
}
++count;
worker.ReportProgress(count, new IQInfo(
buff[6],
(UInt32)buff[7] << 8 | (UInt32)buff[8],
buff[9],
buff[10],
buff[11],
buff[12],
buff[13],
(Int32)((UInt32)buff[14] << 24 | (UInt32)buff[15] << 16 | (UInt32)buff[16] << 8 | (UInt32)buff[17]),
(Int16)((UInt32)buff[18] << 8 | (UInt32)buff[19]),
(Int16)((UInt32)buff[20] << 8 | (UInt32)buff[21])));
rs = ReceiveStatus.None;
ptr = 0;
}
if (rs == ReceiveStatus.FinishSharpCommand)
{
string s2 = Encoding.UTF8.GetString(buff).Substring(0, sharpLen);
if(s2 == "#QUIT")
{
Close();
return;
}
}
if (ptr == BufferSize)
{
rs = ReceiveStatus.None;
ptr = 0;
}
} //while(worker.CancellationPending)
} //using (NamedPipeServerStream pipeStrea...
}
} //if (dataSource == SourceFrom.UART) else
}
private void QvxDataServerWorker()
{
using (NamedPipeServerStream pipeServer = new NamedPipeServerStream(pipeName, PipeDirection.InOut, 1))
{
pipeServer.WaitForConnection();
var buf = new byte[65536*20];
object state = new object();
while (running && pipeServer.IsConnected)
{
var iar = pipeServer.BeginRead(buf, 0, buf.Length, null, state);
while (!iar.IsCompleted) Thread.Sleep(1); // TODO: add Timeout possibility
var count = pipeServer.EndRead(iar);
Console.WriteLine("Date Read: " + count.ToString());//+ ASCIIEncoding.ASCII.GetString(buf, 0, count));
if (count > 0)
{
var sendBuf = new byte[count];
Array.Copy(buf, sendBuf, count);
lock (locksendQueue)
{
sendQueue.Add(sendBuf);
}
}
}
if (pipeServer.IsConnected) pipeServer.Close();
}
Console.WriteLine("PIPE finished");
lock (locksendQueue)
{
sendQueue.Add(new byte[0]);
}
running = false;
Console.WriteLine("Close QvxDataServerWorker");
}
