help!! Ubuntu 18.04, c++ casablanca error

[arpamon]

This code is accessible at 127.0.0.1.

But... ...I don't know how to set up to connect from the outside.

How do I do that?


#include <iostream>
#include <cpprest/http_listener.h>

using namespace std;
using namespace web::http;
using namespace web::http::experimental::listener;

int main(){
http_listener listener("http://localhost:13654");

listener.open().then([&listener](){cout << (U("\n start!!\n"));}).wait();
listener.support(methods::GET, [](http_request req){
req.reply(status_codes::OK, U("hello wordl"));
});
while(true);

listener.close();
return 0;
}

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