[Boost-users] boost::asio socket as class member

[Claude]

Hi!

I want to put a boost::asio::ip::tcp::socket as a private member of my class
and then create the object in one of the class methods.

I actually use this code:

class myClass{

private:
boost::asio::io_service io_service;
boost::asio::ip::tcp::socket s;
};

But this code don't work (don't compile). Why?
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[Brian Budge]

You need to construct s with your io_service... you need to do that in
myClass().

Brian

[The Novice Coder]

Claude wrote:
> Hi!
>
> I want to put a boost::asio::ip::tcp::socket as a private member of my class
> and then create the object in one of the class methods.
>
> I actually use this code:
>
> class myClass{
>
> private:
> boost::asio::io_service io_service;
> boost::asio::ip::tcp::socket s;
> };
>
>
>
> But this code don't work (don't compile). Why?
>

Wow, one I can answer..
Anyways, I suspect the compile error you're getting is "No default
constructor available". The problem is just that, Socket doesn't have
an "empty" constructor.

The Socket constructor needs an boost::asio::io_service object to work.

You can fix your code by adding a constructor that does the
initialization, like so:

class myClass{
public:
myClass() : s(io_service) {}

private:
boost::asio::io_service io_service;
boost::asio::ip::tcp::socket s;
};

Hope that helps!

[Claude]

Ok, it now work! Thanks!! :-)
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