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added simple chkspeed sample.
This commit is contained in:
Gunter Knauf
parent
60c0994677
commit
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163
docs/examples/chkspeed.c
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163
docs/examples/chkspeed.c
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/*****************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* $Id$
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*
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* Example source code to show how the callback function can be used to
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* download data into a chunk of memory instead of storing it in a file.
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* After successful download we use curl_easy_getinfo() calls to get the
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* amount of downloaded bytes, the time used for the whole download, and
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* the average download speed.
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* On Linux you can create the download test files with:
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* dd if=/dev/urandom of=file_1M.bin bs=1M count=1
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <curl/curl.h>
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#include <curl/types.h>
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#include <curl/easy.h>
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#define URL_BASE "http://speedtest.your.domain/"
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#define URL_1M URL_BASE "file_1M.bin"
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#define URL_2M URL_BASE "file_2M.bin"
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#define URL_5M URL_BASE "file_5M.bin"
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#define URL_10M URL_BASE "file_10M.bin"
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#define URL_20M URL_BASE "file_20M.bin"
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#define URL_50M URL_BASE "file_50M.bin"
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#define URL_100M URL_BASE "file_100M.bin"
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#define CHKSPEED_VERSION "1.0"
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static size_t WriteCallback(void *ptr, size_t size, size_t nmemb, void *data)
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{
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/* we are not interested in the downloaded bytes itself,
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so we only return the size we would have saved ... */
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return (size_t)(size * nmemb);
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}
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int main(int argc, char *argv[])
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{
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CURL *curl_handle;
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CURLcode res;
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int prtsep = 0, prttime = 0;
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char *url = URL_1M;
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char *appname = argv[0];
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if (argc > 1) {
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/* parse input parameters */
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for (argc--, argv++; *argv; argc--, argv++) {
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if (strncasecmp(*argv, "-", 1) == 0) {
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if (strncasecmp(*argv, "-H", 2) == 0) {
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fprintf(stderr,
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"\rUsage: %s [-m=1|2|5|10|20|50|100] [-t] [-x] [url]\n",
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appname);
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exit(1);
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} else if (strncasecmp(*argv, "-V", 2) == 0) {
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fprintf(stderr, "\r%s %s - %s\n",
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appname, CHKSPEED_VERSION, curl_version());
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exit(1);
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} else if (strncasecmp(*argv, "-X", 2) == 0) {
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prtsep = 1;
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} else if (strncasecmp(*argv, "-T", 2) == 0) {
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prttime = 1;
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} else if (strncasecmp(*argv, "-M=", 3) == 0) {
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int m = atoi(*argv + 3);
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switch(m) {
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case 1: url = URL_1M;
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break;
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case 2: url = URL_2M;
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break;
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case 5: url = URL_5M;
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break;
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case 10: url = URL_10M;
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break;
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case 20: url = URL_20M;
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break;
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case 50: url = URL_50M;
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break;
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case 100: url = URL_100M;
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break;
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default: fprintf(stderr, "\r%s: invalid parameter %s\n",
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appname, *argv + 3);
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exit(1);
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}
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} else {
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fprintf(stderr, "\r%s: invalid or unknown option %s\n",
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appname, *argv);
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exit(1);
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}
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} else {
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url = *argv;
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}
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}
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}
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/* print separator line */
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if (prtsep) {
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printf("-------------------------------------------------\n");
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}
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/* print localtime */
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if (prttime) {
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time_t t = time(NULL);
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printf("Localtime: %s", ctime(&t));
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}
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/* init libcurl */
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curl_global_init(CURL_GLOBAL_ALL);
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/* init the curl session */
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curl_handle = curl_easy_init();
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/* specify URL to get */
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curl_easy_setopt(curl_handle, CURLOPT_URL, url);
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/* send all data to this function */
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curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteCallback);
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/* some servers don't like requests that are made without a user-agent
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field, so we provide one */
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curl_easy_setopt(curl_handle, CURLOPT_USERAGENT,
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"libcurl-speedchecker/" CHKSPEED_VERSION);
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/* get it! */
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res = curl_easy_perform(curl_handle);
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if(CURLE_OK == res) {
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double val;
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/* check for bytes downloaded */
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res = curl_easy_getinfo(curl_handle, CURLINFO_SIZE_DOWNLOAD, &val);
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if((CURLE_OK == res) && val)
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printf("Data downloaded: %0.0f bytes.\n", val);
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/* check for total download time */
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res = curl_easy_getinfo(curl_handle, CURLINFO_TOTAL_TIME, &val);
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if((CURLE_OK == res) && val)
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printf("Total download time: %0.3f sec.\n", val);
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/* check for average download speed */
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res = curl_easy_getinfo(curl_handle, CURLINFO_SPEED_DOWNLOAD, &val);
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if((CURLE_OK == res) && val)
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printf("Average download speed: %0.3f kbyte/sec.\n", val / 1024);
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} else {
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printf("Errror while fetching '%s' : %s\n", url, curl_easy_strerror(res));
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}
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/* cleanup curl stuff */
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curl_easy_cleanup(curl_handle);
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/* we're done with libcurl, so clean it up */
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curl_global_cleanup();
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return 0;
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}
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