construct ip::address from ipv4_address

Question

I am using the following code to initialize an endpoint.

       endPt = boost::asio::ip::tcp::endpoint(boost::asio::ip::address::from_string("192.168.1.21"), 
                                                            boost::lexical_cast<int>(portNo));

What is the right way to initialize an endpoint if the ipaddress is in form of a char array ( say argv[1]) or a string object read from a config file. Boost docs in this link give the following.

    "Construct an address from an IPv4 address."

Is the above the right way? Please help me with a code snippet.

Answer 1

In your code snippet, the string "192.168.1.21" is in fact a char array such as would be obtained from argv[1] .

endPt = boost::asio::ip::tcp::endpoint(
    boost::asio::ip::address::from_string(argv[1]),
    boost::lexical_cast<int>(portNo)
);