Sockets and structures?

pedro chaparro

25 Sep 2009 25 Sep '09

10:56 a.m.

hi, i'm wondreing if using asio library can i send a structure and not just string messages using the boost::asiio:write command? or how could i do to send a structure which have many information fields? thanks -- Ing Pedro Alonso Chaparro Valero Ciudad Politecnica de la Innovación iTEAM - Mobile Communications Group Polytechnic University of Valencia C\ Camino de Vera S/N, Edificio 8G 46022 Valencia, Spain

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OvermindDL1

25 Sep 25 Sep

3:55 p.m.

On Fri, Sep 25, 2009 at 4:56 AM, pedro chaparro wrote:

...

hi, i'm wondreing if using asio library can i send a structure and not just string messages using the boost::asiio:write command? or how could i do to send a structure which have many information fields? thanks

As long as it is a POD without pointers, just give it the pointer to the beginning of it and the size. If it is not POD and/or has pointers, then send each element individually.

Nat Goodspeed

4:14 p.m.

OvermindDL1 wrote:

...

On Fri, Sep 25, 2009 at 4:56 AM, pedro chaparro wrote:

...
hi, i'm wondreing if using asio library can i send a structure and not just string messages using the boost::asiio:write command? or how could i do to send a structure which have many information fields? thanks

...

As long as it is a POD without pointers, just give it the pointer to the beginning of it and the size. If it is not POD and/or has pointers, then send each element individually.

Or use Boost.Serialization to serialize your struct/class to a text archive and stream that with asio.

OvermindDL1

7:25 p.m.

On Fri, Sep 25, 2009 at 10:14 AM, Nat Goodspeed wrote:

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Or use Boost.Serialization to serialize your struct/class to a text archive and stream that with asio.

Boost.Serialization is good if you are going to serialize up vast hierarchies with lots of pointers that can be self referencing and such, but it tends to be very costly in execution speed. Something like Boost.Spirit2.1 can serialize things up to a binary format as well, and *very* fast. Although something like Google's open source message system could serialize up messages even better (we need a Boost implementation of that system... hmm...).

Rush Manbert

7:50 p.m.

On Sep 25, 2009, at 3:56 AM, pedro chaparro wrote:

...

hi, i'm wondreing if using asio library can i send a structure and not just string messages using the boost::asiio:write command? or how could i do to send a structure which have many information fields? thanks

Hi Pedro, For anything that doesn't involve pointers you could take a look at Thrift at http://incubator.apache.org/thrift/ Thrift supports lightweight cross-language and cross-platform RPC, as well as serialization to files. The standard release is POSIX only, but I've added a Boost/Asio based port to Windows that's currently available as a patch. - Rush

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Nat Goodspeed
OvermindDL1
pedro chaparro
Rush Manbert