private bool ReadCommandLenght(out int length)
{
length = -1;
var buffers = new List <SocketBuffer>();
if (!GetDataBuffers(10, buffers))
{
return(false);
}
else if (buffers.Count == 1)
{
length = BitConverter.ToInt32(SocketBufferUtil.ReadBytesFromSocketBuffer(10, buffers[0]), 0);
return(true);
}
else
{
var lengthBytes = new byte[10];
byte[] partialBytes1 = SocketBufferUtil.ReadBytesFromSocketBuffer((int)buffers[0].UnreadBytes, buffers[0]);
byte[] partialBytes2 = SocketBufferUtil.ReadBytesFromSocketBuffer(10 - partialBytes1.Length, buffers[1]);
Array.Copy(partialBytes1, lengthBytes, partialBytes1.Length);
Array.Copy(partialBytes2, 0, lengthBytes, partialBytes1.Length - 1, partialBytes2.Length);
length = BitConverter.ToInt32(lengthBytes, 0);
return(true);
}
}
private bool ReadAcknowledgmentId(out int ackId)
{
// Check if acknowledgments are enabled.
ackId = -1;
var buffers = new List <SocketBuffer>();
if (!GetDataBuffers(10, buffers))
{
return(false);
}
else if (buffers.Count == 1)
{
ackId = BitConverter.ToInt32(SocketBufferUtil.ReadBytesFromSocketBuffer(10, buffers[0]), 0);
return(true);
}
else
{
var lengthBytes = new byte[10];
byte[] partialBytes1 = SocketBufferUtil.ReadBytesFromSocketBuffer((int)buffers[0].UnreadBytes, buffers[0]);
byte[] partialBytes2 = SocketBufferUtil.ReadBytesFromSocketBuffer(10 - partialBytes1.Length, buffers[1]);
Array.Copy(partialBytes1, lengthBytes, partialBytes1.Length);
Array.Copy(partialBytes2, 0, lengthBytes, partialBytes1.Length - 1, partialBytes2.Length);
ackId = BitConverter.ToInt32(lengthBytes, 0);
return(true);
}
}
// TODO: Introduce the .Net 4.7.x's Span class here.
public override int Read(byte[] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset < 0 /*|| _commandLength - _position < offset*/)
{
throw new ArgumentOutOfRangeException("offset");
}
if (count < 0 /*|| _commandLength - _position < count*/)
{
throw new ArgumentOutOfRangeException("count");
}
if (buffer.Length - offset < count)
{
throw new ArgumentException("Argument_InvalidOffLen");
}
if (_buffers.Count == 0)
{
throw new Exception("No Buffer");
}
int bytesRead = 0;
while (bytesRead < count && _currBufferIndex < _buffers.Count)
{
SocketBuffer currentBuffer = _buffers[_currBufferIndex];
bytesRead += SocketBufferUtil.ReadBytesFromSocketBuffer(buffer, offset + bytesRead, count - bytesRead, currentBuffer);
_position += bytesRead;
if (currentBuffer.UnreadBytes == 0)
{
_currBufferIndex++;
}
// }
}
return(bytesRead);
}
