packet.body = packet.body..buf:sub(chunk_start, chunk_start + (chunk_size-1));
buf = buf:sub(chunk_start + chunk_size + 2);
chunk_size, chunk_start = nil, nil;
packet.body = packet.body..buf:sub(chunk_start, chunk_start + (chunk_size-1));
buf = buf:sub(chunk_start + chunk_size + 2);
chunk_size, chunk_start = nil, nil;