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 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 = System.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 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);
}