Simple async case for 'curl for people'

async_dl.cc

#include <cpr/cpr.h> // https://github.com/whoshuu/cpr
#include <iostream>

static const char* sURL = "https://www.google.fr";

void async_result() {
  auto fr = cpr::GetAsync(  
      cpr::Url{sURL}
    , cpr::VerifySsl{false}
  );

  auto r = fr.get();
  std::cout << r.status_code << std::endl
            << r.header["content-type"] << std::endl
            << r.text << std::endl 
  ;
}

void callback_result() {
  auto cb = cpr::GetCallback(
    [](cpr::Response r) { return r.text; }
    , cpr::Url{sURL}
    , cpr::VerifySsl{false}
  );

  std::cout << "Waiting";
  while (cb.wait_for(std::chrono::seconds(0)) != std::future_status::ready) {
    std::cout << ".";
  }
  std::cout << std::endl << cb.get() << std::endl;
}

int main(int argc, char** argv) { 
 callback_result();
}