doRead(ByteChunk chunk, Request request) Return from the input stream.
IMPORTANT: the current model assumes that the protocol will 'own' the
buffer and return a pointer to it in ByteChunk ( i.e.
Return from the input stream.
IMPORTANT: the current model assumes that the protocol will 'own' the
buffer and return a pointer to it in ByteChunk ( i.e. the param will
have chunk.getBytes()==null before call, and the result after the call ).