Method getMetadata

src/io/network/message.cc:78–84

}

std::size_t Message::getMetadata(void **p) {
  if (this->msize_ == 0)
    *p = nullptr;
  else
    *p = msg_ + hsize_;
  return this->msize_;
}

std::size_t Message::getPayload(void **p) {
  if (this->psize_ == 0)