(Sorry, incomplete email; CTRL+Return didn't do what I was expecting...)
On Mon, Dec 14, 2020 at 7:10 PM Dominique Devienne
On Wed, Nov 25, 2020 at 6:46 PM Niall Douglas via Boost-users < boost-users@lists.boost.org> wrote:
On 25/11/2020 10:54, Dominique Devienne via Boost-users wrote:
When I log the time it takes to resolve the server address and connect to it, then issue my HTTP request, it takes over 1 second (Win10, VS2019, C++17, Release, localhost for both client and server): 2020-11-25T09:46:38.506180 Connected in 1.023s
While the same on Linux (RH7.5) is just over 2ms: 2020-11-25T09:45:45.517550 Connected in 0.000s
That's a huge difference! Almost 500x...
I can confirm that from libcurl wrapping ASIO, initiating a new HTTPS connection takes almost the same time whether from Linux or Windows.
I finally figured this out, mostly by chance... As the extract below shows, Beast's example uses tcp::endpoint{net::ip::make_address("0.0.0.0"), port} in its sample usage, and I had copy/pasted that in my code (using "0.0.0.0"). This works, in that the server starts fine, and clients work fine too, but leads to those > 1,000ms client connection times on Windows. While using e.g. tcp::endpoint{ tcp::v6(), port } results in 20-30ms connection times on Windows. (2-3ms on Linux). So user error again. But maybe that usage example should use something else? I guess taking an explicit IP is in case the server has multiple network interfaces / IPs? Not sure what could replace it, to save the next poor soul from making the same mistake I did. --DD PS: Niall, I've still seeing 10x between Win10 and RH7, but that's better than 500x, and that's w/o SSL. Even with the server on Win10, and the client on Linux, it's still 3ms. So it's the Win10 client that's slow somehow I guess.
int main(int argc, char* argv[]) { // Check command line arguments. if (argc != 5) { std::cerr << [...] " http-server-async 0.0.0.0 8080 . 1\n"; return EXIT_FAILURE; } auto const address = net::ip::make_address(argv[1]); [...] net::io_context ioc{threads};
// Create and launch a listening port std::make_shared<listener>( ioc, tcp::endpoint{address, port}, doc_root)->run(); [...] return EXIT_SUCCESS; }