C++ Challenge

1. UDP socket

Consider the class udp_socket_t.

1.1

There is a comment that implies that the interface and the implementation is not complete. What is missing there?

1.2

C++ constructors don't allow returning errors. How would you avoid having to check that the socket is valid using the udp_socket_t::is_valid() function and rather signal immediately that the construction failed, without using exceptions?

Hint: would a static function that returns an instance of udp_socket_t help?

2. Reactor

Consider the class reactor_t.

As you can see, the implementation file is empty. Implement the class according to the specification in the header file.