Checks page speed

check_page_speed.cpp

#include <iostream>
#include <string>
#include <cstdio>
#include <curl/curl.h>

// James Glenn <thedonkdonk@gmail.com>
// 2018-03-30

static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp) {
    ((std::string*)userp)->append((char*)contents, size * nmemb);
    return size * nmemb;
}

int main(int argc, char **argv) {
    if (argc != 2) {
        std::cout << "ERROR - Must provide a URL." << std::endl;
        return 2;
    }
    CURL *curl;
    CURLcode res;
    std::string readBuffer;

    curl = curl_easy_init();
    if(curl) {

        curl_easy_setopt(curl, CURLOPT_HEADER, false);
        curl_easy_setopt(curl, CURLOPT_ENCODING, "gzip");
        curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
        curl_easy_setopt(curl, CURLOPT_VERBOSE, false);
        curl_easy_setopt(curl, CURLOPT_USERAGENT, "Page Speed Checker v1.0");
        curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
        res = curl_easy_perform(curl);
        if(CURLE_OK == res) {
            char *url = NULL;
            curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &url);
            long response_code;
            curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);
            double dlsize;
            curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD, &dlsize);
            double dlspeed;
            curl_easy_getinfo(curl, CURLINFO_SPEED_DOWNLOAD, &dlspeed);
            double namelookup;
            curl_easy_getinfo(curl, CURLINFO_NAMELOOKUP_TIME, &namelookup);
            double connect;
            curl_easy_getinfo(curl, CURLINFO_CONNECT_TIME, &connect);
            double pretransfer;
            curl_easy_getinfo(curl, CURLINFO_PRETRANSFER_TIME, &pretransfer);
            double start;
            curl_easy_getinfo(curl, CURLINFO_STARTTRANSFER_TIME, &start);
            double redirect;
            curl_easy_getinfo(curl, CURLINFO_REDIRECT_TIME, &redirect);
            double total;
            curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME, &total);
            long redirects;
            curl_easy_getinfo(curl, CURLINFO_REDIRECT_COUNT, &redirects);


            if((CURLE_OK == res) && response_code) {
                printf("Redirected to: %s\n", url);
                printf("Response Code: %ld\n", response_code);
                printf("Total Redirects: %ld\n", redirects);
                printf("Downloaded: %.0f bytes\n", dlsize);
                printf("Download speed %.0f bytes/sec\n", dlspeed);

                printf("Name Lookup Time: %.2f\n", namelookup);
                printf("Connect Time: %.2f\n", connect);
                printf("Pretransfer Time: %.2f\n", pretransfer);
                printf("Start Time: %.2f\n", start);
                printf("Redirect Time: %.2f\n", redirect);
                printf("Total Time: %.2f\n", total);

            }
        }
        curl_easy_cleanup(curl);

    }
    return 0;
}