set_option: The requested address is not valid in its context

[nguyen.tnhoang@…]

I follow this code to create a UDP multicast receiver: http://www.boost.org/doc/libs/1_66_0/doc/html/boost_asio/example/cpp11/multicast/receiver.cpp

I modify the code with these for predefined values:

class receiver:

short multicast_port = 13;

in main():

if (argc != 3) and the code for argv that follows are commented out

receiver r(io_context, boost::asio::ip::make_address("127.0.0.1"), boost::asio::ip::make_address("127.0.0.1"));

This error is thrown:

set_option: The requested address is not valid in its context

I have tried "0.0.0.0" and "127.0.0.1" and other values. Still get the same error. Could someone please help me figuring out what went wrong?

[nguyen.tnhoang@…]

udp sender used to send sample messages to be listened to