c++ error: use of deleted function boost::asio::io_context::io_context

Question

I'm having this error when trying to instantiate a new object of a class. The code is:

using boost::asio::ip::tcp;
typedef boost::asio::io_service ioservice;

class cnx
{
public:
    cnx(ioservice io);

private:
    tcp::socket *s;
};

//constructor:
cnx::cnx(ioservice io)
{
    this->s = new tcp::socket(io);
}

outside the cpp/h file of cnx, I try to instantiate as:

ioservice io;
cnx c(io);

or

cnx* c = new cnx(io);

and both result in this error message. What can be causing this?

`boost::asio::io_service` is not copyable. – tkausl Apr 29 '18 at 21:00 — tkausl, Apr 29 '18 at 21:00

Fnr · Accepted Answer · 2018-04-29T22:22:55.017

3

As @tkausl said in the comments and also thanks to this answer, the problem was because boost::asio::io_service is not copyable. Changing the definition of the constructor to:

cnx(ioservice& io);

and calling it through:

ioservice io;
cnx c(std::ref(io));

solved the problem

edited Apr 29 '18 at 22:22

answered Apr 29 '18 at 22:12

Fnr

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Would you do the same for a launching a thread ? – HCKRMVT Mar 24 '22 at 23:59

c++ error: use of deleted function boost::asio::io_context::io_context

1 Answers1