Re: [Boost-users] serialization example

Subject: Re: [Boost-users] serialization example
From: Marco Piacentini (marcopiacenta_at_[hidden])
Date: 2011-03-23 05:38:52

Maybe we refer to two distinct case...this is the example of 
boost::serialization


// Serialize the data first so we know how large it is.
    std::ostringstream archive_stream;
    boost::archive::text_oarchive archive(archive_stream);
    archive << t;
    outbound_data_ = archive_stream.str();

    // Format the header.
    std::ostringstream header_stream;
    header_stream << std::setw(header_length)
      << std::hex << outbound_data_.size();
    if (!header_stream || header_stream.str().size() != header_length)
    {
      // Something went wrong, inform the caller.
      boost::system::error_code error(boost::asio::error::invalid_argument);
      socket_.io_service().post(boost::bind(handler, error));
      return;
    }
    outbound_header_ = header_stream.str();

    // Write the serialized data to the socket. We use "gather-write" to send
    // both the header and the data in a single write operation.
    std::vector<boost::asio::const_buffer> buffers;
    buffers.push_back(boost::asio::buffer(outbound_header_));
    buffers.push_back(boost::asio::buffer(outbound_data_));
    boost::asio::async_write(socket_, buffers, handler);
  }
I don't understand if is mandatory to attach this header, or if I can delete it.




________________________________
Da: "Pfligersdorffer, Christian" <Christian.Pfligersdorffer_at_[hidden]>
A: boost-users_at_[hidden]
Inviato: Ven 18 marzo 2011, 16:57:09
Oggetto: Re: [Boost-users] serialization example

Marco Piacentini wrote:
> In the example of the serialization, before serialize, an header is linked to 
>the data.
> It will be handle both in write and read operations.
> Is this header essential for the serialization process, or it can be omitted 
>and I can serialize only the data?
> thank you...

Try the boost::archive::no_header flag when constructing your archive.
Then you will serialize only data, if that is what you wanted.

Good luck,

--
Christian Pfligersdorffer
Software Engineering
www.eos.info
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