New Post: Listener silently fails to open on Ubuntu Linux 14.04

I'm trying to create a restful listener. I compiled everything from source with cmake and gcc 4.8.2.
I've tried launching the blackjack server demo, it launches correctly but if I nmap localhost, I don't see a new open port.

I've also tried starting my own listener as follows:
// **************************************************************************************
int main()
{

web::http::experimental::listener::http_listener listener(web::uri("http://127.0.0.1/restdemo"));


listener.support(web::http::method("GET"), handle_get);
listener.support(web::http::method("PUT"), handle_put);
listener.support(web::http::method("POST"), handle_post);
listener.support(web::http::method("DEL"), handle_delete);
try
{
    listener.open().then([](){std::cout << "Listener Started" << std::endl;}).wait();
}catch(std::exception &e)
{
    std::cout << e.what() << std::endl;
}

while(1)
{
    boost::this_thread::sleep_for(boost::chrono::milliseconds(30));
}
listener.close();
return 0;

}

// *******************************************************************
This successfully enters the while loop, and "Listener Started" is print to console, but there are no open ports.

I've tried running this as a normal user and as root.
I've tried entering my IP address, "localhost", and "127.0.0.1" as the URI.