public IAsyncResult BeginRead(byte[] buffer, int offset, int count,
AsyncCallback cback, object state)
{
if (_disposed)
{
throw new ObjectDisposedException(typeof(RequestStream).ToString());
}
var nread = FillFromBuffer(buffer, offset, count);
if (nread > 0 || nread == -1)
{
var ares = new HttpStreamAsyncResult
{
Buffer = buffer,
Offset = offset,
Count = count,
Callback = cback,
State = state,
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 && count > _remainingBody)
{
count = (int)Math.Min(int.MaxValue, _remainingBody);
}
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 new 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(nameof(buffer));
var 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");
var ares = new HttpStreamAsyncResult
{
Callback = cback,
State = state
};
if (_noMoreData)
{
ares.Complete();
return ares;
}
var 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)
{
_noMoreData = nread == 0;
ares.Count = nread;
ares.Complete();
return ares;
}
ares.Buffer = new byte[8192];
ares.Offset = 0;
ares.Count = 8192;
var 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;
}
public new 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(nameof(buffer));
}
var len = buffer.Length;
if (offset < 0 || offset > len)
{
throw new ArgumentOutOfRangeException(nameof(offset), "offset exceeds the size of buffer");
}
if (count < 0 || offset > len - count)
{
throw new ArgumentOutOfRangeException(nameof(offset), "offset+size exceeds the size of buffer");
}
var ares = new HttpStreamAsyncResult
{
Callback = cback,
State = state
};
if (_noMoreData)
{
ares.Complete();
return(ares);
}
var 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)
{
_noMoreData = nread == 0;
ares.Count = nread;
ares.Complete();
return(ares);
}
ares.Buffer = new byte[8192];
ares.Offset = 0;
ares.Count = 8192;
var rb = new ReadBufferState(buffer, offset, count, ares);
rb.InitialCount += nread;
base.BeginRead(ares.Buffer, ares.Offset, ares.Count, OnRead, rb);
return(ares);
}
