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cpp-httplib/{} )"; void sigint_handler(int s) { exit(1); } std::string time_local() { auto p = std::chrono::system_clock::now(); auto t = std::chrono::system_clock::to_time_t(p); std::stringstream ss; ss << std::put_time(std::localtime(&t), "%d/%b/%Y:%H:%M:%S %z"); return ss.str(); } std::string log(auto &req, auto &res) { auto remote_user = "-"; // TODO: auto request = std::format("{} {} {}", req.method, req.path, req.version); auto body_bytes_sent = res.get_header_value("Content-Length"); auto http_referer = "-"; // TODO: auto http_user_agent = req.get_header_value("User-Agent", "-"); // NOTE: From NGINX defualt access log format // log_format combined '$remote_addr - $remote_user [$time_local] ' // '"$request" $status $body_bytes_sent ' // '"$http_referer" "$http_user_agent"'; return std::format(R"({} - {} [{}] "{}" {} {} "{}" "{}")", req.remote_addr, remote_user, time_local(), request, res.status, body_bytes_sent, http_referer, http_user_agent); } int main(int argc, const char **argv) { signal(SIGINT, sigint_handler); auto base_dir = "./html"; auto host = "0.0.0.0"; auto port = 80; httplib::Server svr; svr.set_error_handler([](auto & /*req*/, auto &res) { auto body = std::format(error_html, res.status, httplib::status_message(res.status), CPPHTTPLIB_VERSION); res.set_content(body, "text/html"); }); svr.set_logger( [](auto &req, auto &res) { std::cout << log(req, res) << std::endl; }); svr.set_mount_point("/", base_dir); std::cout << std::format("Serving HTTP on {0} port {1} ...", host, port) << std::endl; auto ret = svr.listen(host, port); return ret ? 0 : 1; }