| private BeginRead ( byte buffer, int offset, int count, AsyncCallback callback, Object state ) : IAsyncResult | ||
| buffer | byte | |
| offset | int | |
| count | int | |
| callback | AsyncCallback | |
| state | Object | |
| return | IAsyncResult | |
private static Task<int> ReadTask(Stream stream, byte[] buffer, int offset, int count, object state)
{
var tcs = new TaskCompletionSource<int>();
stream.BeginRead(buffer, offset, count, ar =>
{
try { tcs.SetResult(stream.EndRead(ar)); }
catch (Exception exc) { tcs.SetException(exc); }
}, state);
return tcs.Task;
}
public static int ReadStream(Stream stream, byte[] buffer, int offset, int count, int timeout)
{
if (stream == null || buffer == null || buffer.Length < (offset + count))
return -1;
IAsyncResult arRead = stream.BeginRead(buffer, offset, count, null, null);
if (!arRead.AsyncWaitHandle.WaitOne(timeout))
{
throw new TimeoutException("Could not read within the timeout period.");
}
return stream.EndRead(arRead);
}
public bool Connect()
{
try
{
//_socket.Connect(host, port);
var connect_result = _socket.BeginConnect(host, port, null, null);
if(!connect_result.AsyncWaitHandle.WaitOne(1500))
{
throw new Exception();
}
_socket.EndConnect(connect_result);
}
catch
{
this.Destruct("Failed to connect.", true);
return false;
}
_stream = _socket.GetStream();
isConnected = true;
Program._RconBox.SomethingToSend.Enabled = true;
byte[] buff = new byte[1];
AsyncCallback callback = null;
callback = ar =>
{
try
{
int bytes = _stream.EndRead(ar);
//Program._RconBox.OutputBox.Text += buff;
Program.wattosend.Add(buff[0]);
buff[0] = 0;
if (!this.isConnected || bytes == 0)
{
this.Destruct("Disconnected!");
return;
}
_stream.BeginRead(buff, 0, 1, callback, null);
}
catch
{
this.Destruct("Reading has failed");
}
};
_stream.BeginRead(buff, 0, 1, callback, null);
this.Send("set redrawcmd false");
this.Send("login " + this.pass);
return true;
}
static IEnumerable<Task> CopyStream(Stream input, Stream output)
{
var buffer = new byte[0x2000];
while (true)
{
// Create task to read from the input stream
var read = Task<int>.Factory.FromAsync((buf, offset, count, callback, state) =>
{
Console.WriteLine("Issuing BeginRead");
return input.BeginRead(buf, offset, count, callback, state);
},
ar =>
{
Console.WriteLine("Read completed");
return input.EndRead(ar);
},
buffer, 0, buffer.Length, null);
yield return read;
// If we read no data, return
if (read.Result == 0) break;
// Create task to write to the output stream
yield return Task.Factory.FromAsync((buf, offset, count, callback, state) =>
{
Console.WriteLine("Issuing BeginWrite");
return output.BeginWrite(buf, offset, count, callback, state);
},
ar =>
{
Console.WriteLine("Write completed");
output.EndWrite(ar);
}, buffer, 0, read.Result, null);
}
}
private static void ReadUnsignedVarint(
Stream stream,
Bcp.ReadState readState,
ProcessReadVarint processReadVarint,
BcpDelegate.ExceptionHandler exceptionHandler)
{
var buffer = new byte[1];
var i = 0;
uint result = 0U;
AsyncCallback asyncCallback = null;
asyncCallback = asyncResult =>
{
try
{
int numBytesRead = stream.EndRead(asyncResult);
if (numBytesRead != 1)
{
exceptionHandler(new EndOfStreamException());
}
uint b = buffer[0];
if (i < 32)
{
if (b >= 0x80)
{
result |= ((b & 0x7f) << i);
i += 7;
stream.BeginRead(buffer, 0, 1, asyncCallback, readState);
}
else
{
result |= (b << i);
processReadVarint(result);
}
}
else
{
exceptionHandler(new BcpException.VarintTooBig());
}
}
catch (Exception e)
{
exceptionHandler(e);
}
};
try
{
stream.BeginRead(buffer, 0, 1, asyncCallback, readState);
}
catch (Exception e)
{
exceptionHandler(e);
}
}
private void SslRead(IAsyncResult ar)
{
if (m_IsDisposed)
{
return;
}
try
{
int byteCount = -1;
int bufferSize = m_Buffer.Length;
m_LastRead = DateTime.Now;
byteCount = m_NetworkStream.EndRead(ar);
m_BytesRead += byteCount;
if (!m_HasHeaders || m_RequestType == RequestType.GET)
{
string sBuffer = Encoding.ASCII.GetString(m_Buffer, 0, byteCount);
m_ReadData += sBuffer;
}
AppendBuffer(m_Buffer, byteCount);
m_HasHeaders = UpdateUniqueHeaders();
if (!m_HasHeaders && m_BytesRead > 1024)
{
Program.BlacklistIP(m_RemoteIP, m_ReadData, "No HTTP headers found in the first 1024 bytes");
return;
}
if (byteCount > 0)
{
if (m_RequestType != RequestType.POST && m_RequestType != RequestType.None)
{
m_NetworkStream.BeginRead(m_Buffer, 0, bufferSize, new AsyncCallback(SslRead), m_NetworkStream);
}
else if (m_EndBoundaryIndex == -1) // as long as we haven't found the end of the stream continue reading
{
m_NetworkStream.BeginRead(m_Buffer, 0, bufferSize, new AsyncCallback(SslRead), m_NetworkStream);
return;
}
}
}
catch (Exception e)
{
return;
}
ProcessRequest(m_ReadData);
}
void dataRead(IAsyncResult result)
{
byte[] buffer = result.AsyncState as byte[];
string data = ASCIIEncoding.ASCII.GetString(buffer, 0, buffer.Length);
OnDataRecived.Invoke(data);
if (!stopReciver)
{
buffer = new byte[BufferSize];
connectionStream.BeginRead(buffer, 0, BufferSize, dataRead, buffer);
}
}
public bool StreamContainsSeqeunce(Stream contentStream)
{
int num;
if (contentStream == null)
{
throw new ArgumentNullException("contentStream");
}
if (this.FSequence == null)
{
throw new ArgumentNullException("sequence");
}
if (this.FSequence.Length == 0)
{
return false;
}
byte[] buffer = new byte[0x40000];
byte[] buffer2 = new byte[0x40000];
byte[] buffer3 = buffer;
byte[] buffer4 = buffer2;
int offset = 0;
bool flag = false;
IAsyncResult asyncResult = contentStream.BeginRead(buffer3, 0, buffer3.Length, null, null);
do
{
if (!base.OnProgress(0))
{
break;
}
num = contentStream.EndRead(asyncResult);
if (num > 0)
{
buffer3 = Interlocked.Exchange<byte[]>(ref buffer4, buffer3);
int num3 = offset;
offset = Math.Min(this.FSequence.Length - 1, num);
asyncResult = contentStream.BeginRead(buffer3, offset, buffer3.Length - offset, null, null);
flag = ByteArrayHelper.IndexOf(this.FSequence, buffer4, buffer4.Length) >= 0;
Array.Copy(buffer4, (num + num3) - offset, buffer3, 0, offset);
}
else
{
asyncResult = null;
}
}
while ((num > 0) && !flag);
if (asyncResult != null)
{
contentStream.EndRead(asyncResult);
}
return flag;
}
public static void StreamReadAsync(
Stream stream,
byte[] buffer,
int offset,
int count,
SynchronizationContextWrapper syncContext,
Action<int, Exception> callback)
{
Exception error = null;
int length = 0;
try
{
stream.BeginRead(buffer, offset, count,
delegate(IAsyncResult ar)
{
try
{
length = stream.EndRead(ar);
}
catch (Exception e)
{
error = e;
}
callback(length, error);
},
null);
}
catch (Exception e)
{
error = e;
callback(length, error);
}
}
public override IAsyncResult BeginRead(byte [] buffer, int offset, int count,
AsyncCallback cback, object state)
{
if (disposed)
{
throw new ObjectDisposedException(typeof(RequestStream).ToString());
}
int nread = FillFromBuffer(buffer, offset, count);
if (nread > 0 || nread == -1)
{
HttpStreamAsyncResult ares = new HttpStreamAsyncResult();
ares.Buffer = buffer;
ares.Offset = offset;
ares.Count = count;
ares.Callback = cback;
ares.State = state;
ares.SynchRead = nread;
ares.Complete();
return(ares);
}
// Avoid reading past the end of the request to allow
// for HTTP pipelining
if (remaining_body >= 0 && count > remaining_body)
{
count = (int)Math.Min(Int32.MaxValue, remaining_body);
}
return(stream.BeginRead(buffer, offset, count, cback, state));
}
/// <summary>
/// Pipes data from one stream to another
/// </summary>
/// <param name="input">Stream to read from</param>
/// <param name="output">Stream to write to</param>
/// <param name="MaxBufferSize">Size of buffer to use</param>
/// <returns>Number of bytes piped</returns>
public static int Pipe(Stream input, Stream output, int MaxBufferSize)
{
//Internal buffer are two buffers, each half of allowed buffer size, aligned to 1kb blocks
int bufferSize = (MaxBufferSize / 2) & ~1023;
if (bufferSize <= 0) throw new Exception("Specified buffer size to small");
byte[][] buffer = new byte[2][];
buffer[0] = new byte[bufferSize];
buffer[1] = new byte[bufferSize];
int currentBuffer = 0;
int r, total=0;
IAsyncResult asyncRead,asyncWrite;
//Read first block
r = input.Read(buffer[currentBuffer], 0, bufferSize);
//Continue while we're getting data
while (r > 0)
{
//read and write simultaneously
asyncWrite = output.BeginWrite(buffer[currentBuffer], 0, r, null, null);
asyncRead = input.BeginRead(buffer[1-currentBuffer], 0, bufferSize, null, null);
//Wait for both
output.EndWrite(asyncWrite);
r = input.EndRead(asyncRead);
//Switch buffers
currentBuffer = 1 - currentBuffer;
//Count bytes
total += r;
}
//Return number of bytes piped
return total;
}
public bool Connect()
{
try
{
// Initialize Packet Factory
PacketHandler.Initialize();
// Connect Socket
m_Socket = new TcpClient(m_ServerIP, m_Port);
m_Stream = m_Socket.GetStream();
m_Stream.BeginRead(m_bRecvBuffer, 0, MAX_PACKET_SIZE, new AsyncCallback(EndDataReceive), null);
if (m_Socket.Connected) {
Debugger.Log("Connected to {0} on {1}", m_ServerIP, m_Port);
} else {
Disconnect();
throw new ApplicationException("Failed to connect to server");
}
return true;
}
catch(Exception e)
{
Debugger.Log (Debugger.LogLevel.Info, "SocketServer", "Connect: {0}", e.Message);
}
return false;
}
static void Main(string[] args)
{
_readBuffer = new byte[960];
Console.WriteLine("Opening \"{0}\" for playback", OpenALHelper.PlaybackDevices[0].DeviceName);
Console.WriteLine("Opening \"{0}\" for capture", OpenALHelper.CaptureDevices[0].DeviceName);
_playback = OpenALHelper.PlaybackDevices[0].OpenStream(48000, OpenALAudioFormat.Mono16Bit);
_playback.Listener.Position = new Vector3() { X = 0.0f, Y = 0.0f, Z = 0.0f };
_playback.Listener.Velocity = new Vector3() { X = 0.0f, Y = 0.0f, Z = 0.0f };
_playback.Listener.Orientation = new Orientation()
{
At = new Vector3() { X = 0.0f, Y = 0.0f, Z = 1.0f },
Up = new Vector3() { X = 0.0f, Y = 1.0f, Z = 0.0f }
};
_playback.ALPosition = new Vector3() { X = 0.0f, Y = 0.0f, Z = 0.0f };
_playback.Velocity = new Vector3() { X = 0.0f, Y = 0.0f, Z = 0.0f };
_capture = OpenALHelper.CaptureDevices[0].OpenStream(48000, OpenALAudioFormat.Mono16Bit, 10);
_capture.BeginRead(_readBuffer, 0, _readBuffer.Length, Callback, null);
while (true)
{
PrintUI();
if (ProcessInput())
break;
}
_playback.Close();
_playback.Dispose();
_capture.Close();
_capture.Dispose();
}
private AsyncComparer(Stream source, byte[] expected, Action<bool> completed)
{
_expected = expected;
_src = source;
_completed = completed;
_src.BeginRead(_buffer, 0, ChunkSize, OnRead, null);
}
public void Connect()
{
_channel = StreamFactory.CreateStream(_connString);
readOp = _channel.BeginRead(headerBuffer, 0, 1, callback, null);
// Give the qosManager a handle to the streams
qosManager.SetStreamManager(this);
_connected = true;
}
private static string ReadDataFromStream(Stream str)
{
var buff = new byte[10000];
var asyncResult = str.BeginRead(buff, 0, buff.Length, null, null);
var bytesRead = str.EndRead(asyncResult);
return Encoding.UTF8.GetString(buff, 0, bytesRead);
}
public IAsyncResult BeginRead( Stream stream, AsyncCallback callback )
{
if ( IsFull ) {
Debug.Print( "FancyBuffer.BeginRead: buffer is full" );
throw new Exception( "Read buffer is full." );
}
_stream = stream;
return _stream.BeginRead( Buffer, Offset, Available, callback, this );
}
private IAsyncResult OnEnter(Object sender, EventArgs e, AsyncCallback cb, Object state) {
Debug.Assert(_inputStream == null);
_app = (HttpApplication)sender;
HttpContext context = _app.Context;
HttpRequest request = context.Request;
HttpWorkerRequest wr = context.WorkerRequest;
HttpAsyncResult httpAsyncResult = new HttpAsyncResult(cb, state);
AsyncPreloadModeFlags asyncPreloadMode = context.AsyncPreloadMode;
int contentLength;
bool isForm = false;
bool isFormMultiPart = false;
if (asyncPreloadMode == AsyncPreloadModeFlags.None
|| request.ReadEntityBodyMode != ReadEntityBodyMode.None
|| wr == null
|| !wr.SupportsAsyncRead
|| !wr.HasEntityBody()
|| wr.IsEntireEntityBodyIsPreloaded()
|| context.Handler == null
|| context.Handler is TransferRequestHandler
|| context.Handler is DefaultHttpHandler
|| (contentLength = request.ContentLength) > RuntimeConfig.GetConfig(context).HttpRuntime.MaxRequestLengthBytes
|| ((isForm = StringUtil.StringStartsWithIgnoreCase(request.ContentType, "application/x-www-form-urlencoded"))
&& (asyncPreloadMode & AsyncPreloadModeFlags.Form) != AsyncPreloadModeFlags.Form)
|| ((isFormMultiPart = StringUtil.StringStartsWithIgnoreCase(request.ContentType, "multipart/form-data"))
&& (asyncPreloadMode & AsyncPreloadModeFlags.FormMultiPart) != AsyncPreloadModeFlags.FormMultiPart)
|| !isForm && !isFormMultiPart && (asyncPreloadMode & AsyncPreloadModeFlags.NonForm) != AsyncPreloadModeFlags.NonForm
) {
Debug.Trace("AsyncPreload", " *** AsyncPreload skipped *** ");
httpAsyncResult.Complete(true, null, null);
return httpAsyncResult;
}
Debug.Trace("AsyncPreload", " *** AsyncPreload started *** ");
try {
if (_callback == null) {
_callback = new AsyncCallback(OnAsyncCompletion);
}
_inputStream = request.GetBufferedInputStream();
byte[] buffer = _app.EntityBuffer;
int bytesRead = 0;
// loop to prevent recursive calls and potential stack overflow if/when it completes synchronously
do {
IAsyncResult readAsyncResult = _inputStream.BeginRead(buffer, 0, buffer.Length, _callback, httpAsyncResult);
if (!readAsyncResult.CompletedSynchronously) {
return httpAsyncResult;
}
bytesRead = _inputStream.EndRead(readAsyncResult);
} while (bytesRead != 0);
}
catch {
Reset();
throw;
}
httpAsyncResult.Complete(true, null, null);
return httpAsyncResult;
}
public AsyncStreamReader(Stream stream, Action<byte[]> completed, int bufferSize)
{
_bufferSize = bufferSize;
_buffer = new byte[_bufferSize];
_completed = completed;
_stream = stream;
_all = new List<byte>();
_stream.BeginRead(_buffer, 0, _bufferSize, Callback, this);
}
public static void Copy( Stream in_sourceStream, Stream out_destStream ) {
Streams streams = new Streams( in_sourceStream, out_destStream );
IAsyncResult ar = in_sourceStream.BeginRead(
streams.Buffer,
0,
streams.BufferSize,
new AsyncCallback( CopyStreamCallback ),
streams
);
}
public override IAsyncResult BeginRead(
byte[] buffer,
int offset,
int count,
AsyncCallback callback,
object state
)
{
Trace.WriteLine("TraceStream", String.Format("BeginRead(): offset({0}), count({1})", offset, count));
return(m_in.BeginRead(buffer, offset, count, callback, state));
}
/// <summary>
/// Creates a redirector between the two streams
/// </summary>
public StreamRedirect(Stream from, Stream to, string connInfo)
{
_logger = null;
_from = from;
_to = to;
_connectionInfo = connInfo;
_closed = new ManualResetEvent(false);
_buffer = new byte[BUFF_SIZE];
_result = _from.BeginRead(_buffer, 0, _buffer.Length, OnRead, null);
}
public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback callback, object state)
{
_lock.AcquireReaderLock();
try {
if (this.IsClosed)
{
throw new ObjectDisposedException(null);
}
} finally {
_lock.ReleaseReaderLock();
}
return(_innerStream.BeginRead(buffer, offset, count, callback, state));
}
private static AsyncEvent StreamCopy(Stream src, Stream dst, Func<bool> assertContinuation, Action onException = null, Action<int> onProgress = null)
{
var evt = new AsyncEvent(false, false);
var exception = false;
AsyncCallback cb = null;
cb = (ar) =>
{
var count = src.EndRead(ar);
var readed = (byte[])ar.AsyncState;
if (exception) return;
if (count != 0)
{
lock (evt)
{
if (exception) return;
var newArray = new byte[BLOCK_SIZE];
if (!assertContinuation())
return;
if (onProgress != null)
onProgress(count);
src.BeginRead(newArray, 0, BLOCK_SIZE, cb, newArray);
try
{
dst.Write(readed, 0, count);
}
catch (Exception e)
{
exception = true;
if(onException != null)
onException();
}
}
}
else
{
lock (evt)
{
src.Close();
evt.Set();
}
}
};
var startBuffer = new byte[BLOCK_SIZE];
src.BeginRead(startBuffer, 0, BLOCK_SIZE, cb, startBuffer);
return evt;
}
protected void StartRecording()
{
//Create or overwrite tempfile
this.TempFile = File.Create(PathSettings.TempFilePath);
//Getting stream
WebRequest wReq = WebRequest.Create(this.StreamURL);
HttpWebResponse hRes = (HttpWebResponse)wReq.GetResponse();
System.IO.Stream RadioStream = hRes.GetResponseStream();
//Start reading process
this.ReadHandle = RadioStream.BeginRead(this.Buffer, 0, this.Buffer.Length, new System.AsyncCallback(this.TempSave), RadioStream);
}
public AsyncStreamReader(Stream aStream, Encoding anEncoding, EventHandler<LineReceivedEventArgs> aLineReceivedCallback)
{
if (aStream == null)
throw new ArgumentNullException("aStream");
if (anEncoding == null)
throw new ArgumentNullException("anEncoding");
if (!aStream.CanRead)
throw new ArgumentException("Stream does not support reading");
theBaseStream = aStream;
theEncoding = anEncoding;
theLineReaded = aLineReceivedCallback;
theBaseStream.BeginRead(theReadBuffer, 0, theReadBuffer.Length, AsyncCallback, null);
}
private void ReadAsync(Stream responseStream)
{
Task.Factory.FromAsync<int>((callback, o) => responseStream.BeginRead(buffer, posInBuffer, buffer.Length- posInBuffer, callback, o),
responseStream.EndRead, null)
.ContinueWith(task =>
{
var read = task.Result;
if (read == 0)// will for a reopening of the connection
throw new EndOfStreamException();
// find \r\n in newly read range
var startPos = 0;
byte prev = 0;
bool foundLines = false;
for (int i = posInBuffer; i < posInBuffer + read; i++)
{
if (prev == '\r' && buffer[i] == '\n')
{
foundLines = true;
// yeah, we found a line, let us give it to the users
var data = Encoding.UTF8.GetString(buffer, startPos, i - 1 - startPos);
startPos = i + 1;
Dispatcher.BeginInvoke(() =>
{
ServerResults.Text += data + Environment.NewLine;
});
}
prev = buffer[i];
}
posInBuffer += read;
if (startPos >= posInBuffer) // read to end
{
posInBuffer = 0;
return;
}
if (foundLines == false)
return;
// move remaining to the start of buffer, then reset
Array.Copy(buffer, startPos, buffer, 0, posInBuffer - startPos);
posInBuffer -= startPos;
})
.ContinueWith(task =>
{
if (task.IsFaulted)
return;
ReadAsync(responseStream);
});
}
public void StartReceive(Stream stream)
{
if (stream == null)
throw new ArgumentNullException("stream");
if (this.stream != null)
throw new InvalidOperationException("StartReceive can be called only once.");
this.stream = stream;
try {
stream.BeginRead(buffer, 0, buffer.Length, OnReceive, null);
} catch (ObjectDisposedException) {
OnConnectionLost();
} catch (IOException) {
OnConnectionLost();
}
}
public void AsyncFileReadTestCase()
{
buffer = new Byte[BufferSize];
myCallBack = new AsyncCallback(this.OnCompletedRead);
isoReaderStreamCallBack = File.OpenRead(@"/Users/tomohiro/gitrepo/study/CSharp-Study/kinmokusei/AsyncText.txt");
isoReaderStreamCallBack.BeginRead( // 非同期読み込み
buffer, // 読み込み結果を格納するバッファ
0, // 読み込みの始点
buffer.Length, // バッファのサイズ
myCallBack, // 読み込み完了時のコールバック
null // 状態を取得するためのオブジェクト
);
for( int i = 0; i < 100; i++ ) Console.WriteLine("i={0}", i);
isoReaderStreamCallBack.Close ();
}
/// <summary>
/// Read from a stream asynchronously.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="length">The number of bytes to read.</param>
/// <param name="completed">The completed action.</param>
/// <param name="error">The error action.</param>
public static void ReadAsync(this System.IO.Stream stream, int length, Action <byte[]> completed, Action <Exception> error)
{
var buff = new byte[length];
stream.BeginRead(
buff,
0,
length,
ar =>
{
try
{
byte[] bytes = null;
try
{
var len = stream.EndRead(ar);
bytes = len < 1
? new byte[0]
: len < length
? stream.ReadBytes(buff, len, length - len)
: buff;
}
catch
{
bytes = new byte[0];
}
if (completed != null)
{
completed(bytes);
}
}
catch (Exception ex)
{
if (error != null)
{
error(ex);
}
}
},
null);
}
private void startStreamAsyncRead()
{
byte[] buffer = new byte[1000000];
if (this.isConnected() == false)
{
System.Diagnostics.Debug.WriteLine("isconnected is false");
this.OnServerDisconnected(new ServerEventArgs(this.tcpClient));
this.Disconnect();
return;
}
if (useExplicitStreams)
{
AsyncCallback networkReadCallback = new AsyncCallback(dataReceivedSsh);
sshStreamRead.BeginRead(buffer, 0, 100000, networkReadCallback, buffer);
}
else
{
if (!tcpStream.CanRead)
{
return; /* program probably died */
}
AsyncCallback networkReadCallback = new AsyncCallback(dataReceived);
try
{
if (tcpStreamGzipRead != null)
{
tcpStreamGzipRead.BeginRead(buffer, 0, 1000000, networkReadCallback, buffer);
}
else
{
tcpStream.BeginRead(buffer, 0, 1000000, networkReadCallback, buffer);
}
}
catch (Exception)
{
MessageBox.Show("Disconnected?");
}
// tcpStream.Read(buffer, p, p_3);
}
}
public static BodyAction FromStream(Stream stream)
{
return (next, error, complete) =>
{
var buffer = new byte[4096];
var continuation = new AsyncCallback[1];
bool[] stopped = {false};
continuation[0] = result =>
{
if (result != null && result.CompletedSynchronously) return;
try
{
for (;;)
{
if (result != null)
{
var count = stream.EndRead(result);
if (stopped[0]) return;
if (count <= 0)
{
complete();
return;
}
var data = new ArraySegment<byte>(buffer, 0, count);
if (next(data, () => continuation[0](null))) return;
}
if (stopped[0]) return;
result = stream.BeginRead(buffer, 0, buffer.Length, continuation[0], null);
if (!result.CompletedSynchronously) return;
}
}
catch (Exception ex)
{
error(ex);
}
};
continuation[0](null);
return () => { stopped[0] = true; };
};
}
private static IEnumerator<Int32> CopyStream(AsyncEnumerator<Int64> ae, Stream source, Stream destination, Int32 bufferSize, Action<Int64> reportProgress) {
Byte[] buffer = new Byte[bufferSize];
Int64 totalBytesRead = 0;
while (true) {
ae.SetOperationTag("Reading from source stream");
// Read whichever is smaller (number of bytes left to read OR the buffer size)
source.BeginRead(buffer, 0, buffer.Length, ae.End(), null);
yield return 1;
Int32 bytesReadThisTime = source.EndRead(ae.DequeueAsyncResult());
totalBytesRead += bytesReadThisTime;
ae.SetOperationTag("Writing to destination stream");
destination.BeginWrite(buffer, 0, bytesReadThisTime, ae.End(), null);
yield return 1;
destination.EndWrite(ae.DequeueAsyncResult());
if (reportProgress != null) reportProgress(totalBytesRead);
if (bytesReadThisTime < buffer.Length) break;
}
ae.Result = totalBytesRead;
}
public static IEnumerable<CompletionPort> ReadBytesAsync(AsyncMachine<byte[]> machine, Stream stream, int length)
{
var attributeHelper = new AttributeHelper<VhdHeader>();
var buffer = new byte[length];
int readCount = 0;
int remaining = length;
while (remaining > 0)
{
stream.BeginRead(buffer, readCount, remaining, machine.CompletionCallback, null);
yield return CompletionPort.SingleOperation;
var currentRead = stream.EndRead(machine.CompletionResult);
if (currentRead == 0)
{
break;
}
readCount += currentRead;
remaining -= currentRead;
}
machine.ParameterValue = buffer;
yield break;
}
public void CopyStream(Stream media)
{
// Make sure the stream is ready first.
int tries = 10000; // 10 Seconds
do
{
if (this.IsReady)
break;
System.Threading.Thread.Sleep(1);
} while (--tries != 0);
if (IsReady)
{
buffer = new byte[0x1000];
media.BeginRead(buffer, 0, buffer.Length, MediaReadAsyncCallback, media);
}
else
{
throw new Exception("Pipe Stream isn't ready.");
}
}
public void Connect(IPAddress address)
{
m_Address = address;
try
{
m_Socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
m_Socket.Connect(new IPEndPoint(address, 48888));
m_NetworkStream = new NetworkStream(m_Socket);
m_NetworkStream.BeginRead(m_ReadBuffer, 0, READ_BUFFER_SIZE, m_cbDataRead, null);
parent.PostMessage("Successfully connected to robot host.");
}
catch(Exception ex)
{
parent.PostMessage("Error connecting to robot host.\r\n " + ex.Message);
m_Socket = null;
m_NetworkStream = null;
}
parent.UpdateStatus();
}
private bool VerifyReadException(System.IO.Stream serialStream, Type expectedException)
{
bool retValue = true;
System.IAsyncResult readAsyncResult;
try
{
readAsyncResult = serialStream.BeginRead(new byte[defaultByteArraySize], 0, defaultByteArraySize, null, null);
readAsyncResult.AsyncWaitHandle.WaitOne();
Console.WriteLine("ERROR!!!: No Excpetion was thrown");
retValue = false;
}
catch (System.Exception e)
{
if (e.GetType() != expectedException)
{
Console.WriteLine("ERROR!!!: {0} exception was thrown expected {1}", e.GetType(), expectedException);
retValue = false;
}
}
return(retValue);
}
public override void recv(byte[] buffer, int offset, int size,
ResultHandler rh)
{
mStream.BeginRead(buffer, offset, size, new AsyncCallback(RecvCallback), rh);
}
/// <summary>
/// Begins an asynchronous read operation.
/// </summary>
/// <param name="stream">The stream to read from.</param>
/// <param name="buffer">The buffer to read the data into.</param>
/// <param name="callback">The callback to which a System.IO.AsyncStreamOperationState object is passed.</param>
public static void BeginRead(this Stream stream, byte[] buffer, AsyncCallback callback)
{
stream.BeginRead(buffer, 0, buffer.Length, callback, new StreamAsyncState(stream, buffer));
}
/// <inheritdoc />
public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback callback, object state)
{
return(_stream.BeginRead(buffer, offset, count, callback, state));
}
public int RunCommand(string command, Stream stdoutOutput, TextWriter stderrOutput)
{
m_channel = GetChannelExec(command);
System.IO.Stream stdout = m_channel.getInputStream();
System.IO.Stream stderr = ((ChannelExec)m_channel).getErrStream();
m_channel.connect();
byte[] stdoutByteBuffer = new byte[1024];
byte[] stderrByteBuffer = new byte[32];
////////////////////////////////////////////////////////////////////////////
bool stdoutIsExhausted = false;
AsyncCallback stdoutReadCallback = null;
stdoutReadCallback = readResult =>
{
int bytesRead = stdout.EndRead(readResult);
if (bytesRead > 0)
{
stdoutOutput.Write(
stdoutByteBuffer,
0,
bytesRead
);
stdout.BeginRead(stdoutByteBuffer, 0, stdoutByteBuffer.Length, stdoutReadCallback, null);
}
else if (bytesRead < 0)
{
stdoutOutput.Flush();
stdoutIsExhausted = true;
}
};
////////////////////////////////////////////////////////////////////////////
bool stderrIsExhausted = false;
AsyncCallback stderrReadCallback = null;
stderrReadCallback = readResult =>
{
int bytesRead = stderr.EndRead(readResult);
if (bytesRead > 0)
{
string text = System.Text.ASCIIEncoding.ASCII.GetString(stderrByteBuffer, 0, bytesRead);
text = text.Replace("\n", Environment.NewLine);
stderrOutput.Write(text);
stderr.BeginRead(stderrByteBuffer, 0, stderrByteBuffer.Length, stderrReadCallback, null);
}
else if (bytesRead < 0)
{
stderrIsExhausted = true;
}
};
////////////////////////////////////////////////////////////////////////////
stdout.BeginRead(stdoutByteBuffer, 0, stdoutByteBuffer.Length, stdoutReadCallback, null);
stderr.BeginRead(stderrByteBuffer, 0, stderrByteBuffer.Length, stderrReadCallback, null);
while (!(stdoutIsExhausted && stderrIsExhausted))
{
// empty loop; wait until reads are complete before returning
}
m_channel.disconnect();
return(m_channel.getExitStatus());
}
public static IAsyncResult BeginReadStreamToEnd(Stream stream, byte[] buffer, int offset, int count,
AsyncCallback callback, Object state)
{
byte[] tempBuffer = new byte[count];
ByteArrayAsyncResult result = new ByteArrayAsyncResult(callback, state, buffer, offset, tempBuffer);
ByteArrayAsyncState asyncState = new ByteArrayAsyncState();
asyncState.Result = result;
asyncState.Stream = stream;
stream.BeginRead(tempBuffer, 0, count, OnRead, asyncState);
return result;
}
public void Start()
{
Console.WriteLine("Sensor: Starting Speed Sensor");
port.Open();
stream = port.BaseStream;
// C# serial port class is dangerous, only the BaseStream is safe
// http://www.sparxeng.com/blog/software/must-use-net-system-io-ports-serialport
stream.BeginRead(recvBuffer, 0, recvBuffer.Length, OnRecv, null);
}
