protected virtual IAsyncResult BeginReadCore(byte[] buffer, int offset, int size, AsyncCallback cback, object state)
{
if (size == 0 || _closed)
{
HttpStreamAsyncResult ares = new HttpStreamAsyncResult(this);
ares._callback = cback;
ares._state = state;
ares.Complete();
return(ares);
}
int nread = FillFromBuffer(buffer, offset, size);
if (nread > 0 || nread == -1)
{
HttpStreamAsyncResult ares = new HttpStreamAsyncResult(this);
ares._buffer = buffer;
ares._offset = offset;
ares._count = size;
ares._callback = cback;
ares._state = state;
ares._synchRead = Math.Max(0, nread);
ares.Complete();
return(ares);
}
// Avoid reading past the end of the request to allow
// for HTTP pipelining
if (_remainingBody >= 0 && size > _remainingBody)
{
size = (int)Math.Min(_remainingBody, (long)size);
}
return(_stream.BeginRead(buffer, offset, size, cback, state));
}
public override int EndRead(IAsyncResult ares)
{
if (disposed)
{
throw new ObjectDisposedException(GetType().ToString());
}
HttpStreamAsyncResult my_ares = ares as HttpStreamAsyncResult;
if (ares == null)
{
throw new ArgumentException("Invalid IAsyncResult", "ares");
}
if (!ares.IsCompleted)
{
ares.AsyncWaitHandle.WaitOne();
}
if (my_ares.Error != null)
{
throw new System.Net.HttpListenerException(400, "I/O operation aborted: " + my_ares.Error.Message);
}
return(my_ares.Count);
}
void OnRead(IAsyncResult base_ares)
{
ReadBufferState rb = (ReadBufferState)base_ares.AsyncState;
HttpStreamAsyncResult ares = rb.Ares;
try
{
int nread = base.EndRead(base_ares);
decoder.Write(ares.Buffer, ares.Offset, nread);
nread = decoder.Read(rb.Buffer, rb.Offset, rb.Count);
rb.Offset += nread;
rb.Count -= nread;
if (rb.Count == 0 || !decoder.WantMore || nread == 0)
{
no_more_data = !decoder.WantMore && nread == 0;
ares.Count = rb.InitialCount - rb.Count;
ares.Complete();
return;
}
ares.Offset = 0;
ares.Count = Math.Min(8192, decoder.ChunkLeft + 6);
base.BeginRead(ares.Buffer, ares.Offset, ares.Count, OnRead, rb);
}
catch (Exception e)
{
context.Connection.SendError(e.Message, 400);
ares.Complete(e);
}
}
public override int EndRead(IAsyncResult asyncResult)
{
if (asyncResult == null)
{
throw new ArgumentNullException(nameof(asyncResult));
}
HttpStreamAsyncResult ares = asyncResult as HttpStreamAsyncResult;
if (ares == null || !ReferenceEquals(this, ares._parent))
{
throw new ArgumentException("Invalid async result");
}
if (ares._endCalled)
{
throw new InvalidOperationException("Invalid end call");
}
ares._endCalled = true;
if (!asyncResult.IsCompleted)
{
asyncResult.AsyncWaitHandle.WaitOne();
}
if (ares._error != null)
{
throw new HttpListenerException((int)HttpStatusCode.BadRequest, "Operation aborted");
}
return(ares._count);
}
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 = Math.Max(0, 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);
}
public ReadBufferState(byte[] buffer, int offset, int count, HttpStreamAsyncResult ares)
{
Buffer = buffer;
Offset = offset;
Count = count;
InitialCount = count;
Ares = ares;
}
public override IAsyncResult BeginRead(byte[] buffer, int offset, int count,
AsyncCallback cback, object state)
{
if (disposed)
throw new ObjectDisposedException(GetType().ToString());
if (buffer == null)
throw new ArgumentNullException("buffer");
int len = buffer.Length;
if (offset < 0 || offset > len)
throw new ArgumentOutOfRangeException("offset exceeds the size of buffer");
if (count < 0 || offset > len - count)
throw new ArgumentOutOfRangeException("offset+size exceeds the size of buffer");
HttpStreamAsyncResult ares = new HttpStreamAsyncResult();
ares.Callback = cback;
ares.State = state;
if (no_more_data)
{
ares.Complete();
return ares;
}
int nread = decoder.Read(buffer, offset, count);
offset += nread;
count -= nread;
if (count == 0)
{
// got all we wanted, no need to bother the decoder yet
ares.Count = nread;
ares.Complete();
return ares;
}
if (!decoder.WantMore)
{
no_more_data = nread == 0;
ares.Count = nread;
ares.Complete();
return ares;
}
ares.Buffer = new byte[8192];
ares.Offset = 0;
ares.Count = 8192;
ReadBufferState rb = new ReadBufferState(buffer, offset, count, ares);
rb.InitialCount += nread;
base.BeginRead(ares.Buffer, ares.Offset, ares.Count, OnRead, rb);
return ares;
}
protected override IAsyncResult BeginReadCore(byte[] buffer, int offset, int size, AsyncCallback cback, object state)
{
HttpStreamAsyncResult ares = new HttpStreamAsyncResult(this);
ares._callback = cback;
ares._state = state;
if (_no_more_data || size == 0 || _closed)
{
ares.Complete();
return(ares);
}
int nread = _decoder.Read(buffer, offset, size);
offset += nread;
size -= nread;
if (size == 0)
{
// got all we wanted, no need to bother the decoder yet
ares._count = nread;
ares.Complete();
return(ares);
}
if (!_decoder.WantMore)
{
_no_more_data = nread == 0;
ares._count = nread;
ares.Complete();
return(ares);
}
ares._buffer = new byte[8192];
ares._offset = 0;
ares._count = 8192;
ReadBufferState rb = new ReadBufferState(buffer, offset, size, ares);
rb.InitialCount += nread;
base.BeginReadCore(ares._buffer, ares._offset, ares._count, OnRead, rb);
return(ares);
}
private IAsyncResult BeginWriteCore(byte[] buffer, int offset, int size, AsyncCallback cback, object state)
{
if (_closed)
{
HttpStreamAsyncResult ares = new HttpStreamAsyncResult(this);
ares._callback = cback;
ares._state = state;
ares.Complete();
return(ares);
}
byte[] bytes = null;
MemoryStream ms = GetHeaders(false);
bool chunked = _response.SendChunked;
if (ms != null)
{
long start = ms.Position;
ms.Position = ms.Length;
if (chunked)
{
bytes = GetChunkSizeBytes(size, false);
ms.Write(bytes, 0, bytes.Length);
}
ms.Write(buffer, offset, size);
buffer = ms.GetBuffer();
offset = (int)start;
size = (int)(ms.Position - start);
}
else if (chunked)
{
bytes = GetChunkSizeBytes(size, false);
InternalWrite(bytes, 0, bytes.Length);
}
return(_stream.BeginWrite(buffer, offset, size, cback, state));
}
public override IAsyncResult BeginRead(byte[] buffer, int offset, int count,
AsyncCallback cback, object state)
{
if (disposed)
{
throw new ObjectDisposedException(GetType().ToString());
}
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
int len = buffer.Length;
if (offset < 0 || offset > len)
{
throw new ArgumentOutOfRangeException("offset exceeds the size of buffer");
}
if (count < 0 || offset > len - count)
{
throw new ArgumentOutOfRangeException("offset+size exceeds the size of buffer");
}
HttpStreamAsyncResult ares = new HttpStreamAsyncResult();
ares.Callback = cback;
ares.State = state;
if (no_more_data)
{
ares.Complete();
return(ares);
}
int nread = decoder.Read(buffer, offset, count);
offset += nread;
count -= nread;
if (count == 0)
{
// got all we wanted, no need to bother the decoder yet
ares.Count = nread;
ares.Complete();
return(ares);
}
if (!decoder.WantMore)
{
no_more_data = nread == 0;
ares.Count = nread;
ares.Complete();
return(ares);
}
ares.Buffer = new byte[8192];
ares.Offset = 0;
ares.Count = 8192;
ReadBufferState rb = new ReadBufferState(buffer, offset, count, ares);
rb.InitialCount += nread;
base.BeginRead(ares.Buffer, ares.Offset, ares.Count, OnRead, rb);
return(ares);
}
public ReadBufferState(byte[] buffer, int offset, int count,
HttpStreamAsyncResult ares)
{
Buffer = buffer;
Offset = offset;
Count = count;
InitialCount = count;
Ares = ares;
}
