public override int Read(byte [] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
else if (offset < 0 || offset >= buffer.Length)
{
throw new ArgumentOutOfRangeException("offset");
}
else if (count < 0)
{
throw new ArgumentOutOfRangeException("count");
}
else if (offset + count > buffer.Length)
{
throw new ArgumentException("sum of offset and count is larger than the buffer length");
}
CheckDisposed();
while (!haveData || (bufferLength == 0 && multi.HandlesRemaining > 0))
{
multi.AutoPerformWithSelect();
}
count = Math.Min(bufferLength, count);
if (count == 0)
{
return(0);
}
Array.Copy(this.buffer, 0, buffer, offset, count);
if (bufferWritePosition - count > 0)
{
Array.Copy(this.buffer, count, this.buffer, 0, bufferWritePosition - count);
}
bufferWritePosition -= count;
bufferLength -= count;
position += count;
return(count);
}
