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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/examples/chkspeed.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/docs/examples/chkspeed.c b/docs/examples/chkspeed.c new file mode 100644 index 000000000..50bf9c099 --- /dev/null +++ b/docs/examples/chkspeed.c @@ -0,0 +1,163 @@ +/***************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * $Id$ + * + * Example source code to show how the callback function can be used to + * download data into a chunk of memory instead of storing it in a file. + * After successful download we use curl_easy_getinfo() calls to get the + * amount of downloaded bytes, the time used for the whole download, and + * the average download speed. + * On Linux you can create the download test files with: + * dd if=/dev/urandom of=file_1M.bin bs=1M count=1 + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> + +#include <curl/curl.h> +#include <curl/types.h> +#include <curl/easy.h> + +#define URL_BASE "http://speedtest.your.domain/" +#define URL_1M URL_BASE "file_1M.bin" +#define URL_2M URL_BASE "file_2M.bin" +#define URL_5M URL_BASE "file_5M.bin" +#define URL_10M URL_BASE "file_10M.bin" +#define URL_20M URL_BASE "file_20M.bin" +#define URL_50M URL_BASE "file_50M.bin" +#define URL_100M URL_BASE "file_100M.bin" + +#define CHKSPEED_VERSION "1.0" + +static size_t WriteCallback(void *ptr, size_t size, size_t nmemb, void *data) +{ + /* we are not interested in the downloaded bytes itself, + so we only return the size we would have saved ... */ + return (size_t)(size * nmemb); +} + +int main(int argc, char *argv[]) +{ + CURL *curl_handle; + CURLcode res; + int prtsep = 0, prttime = 0; + char *url = URL_1M; + char *appname = argv[0]; + + if (argc > 1) { + /* parse input parameters */ + for (argc--, argv++; *argv; argc--, argv++) { + if (strncasecmp(*argv, "-", 1) == 0) { + if (strncasecmp(*argv, "-H", 2) == 0) { + fprintf(stderr, + "\rUsage: %s [-m=1|2|5|10|20|50|100] [-t] [-x] [url]\n", + appname); + exit(1); + } else if (strncasecmp(*argv, "-V", 2) == 0) { + fprintf(stderr, "\r%s %s - %s\n", + appname, CHKSPEED_VERSION, curl_version()); + exit(1); + } else if (strncasecmp(*argv, "-X", 2) == 0) { + prtsep = 1; + } else if (strncasecmp(*argv, "-T", 2) == 0) { + prttime = 1; + } else if (strncasecmp(*argv, "-M=", 3) == 0) { + int m = atoi(*argv + 3); + switch(m) { + case 1: url = URL_1M; + break; + case 2: url = URL_2M; + break; + case 5: url = URL_5M; + break; + case 10: url = URL_10M; + break; + case 20: url = URL_20M; + break; + case 50: url = URL_50M; + break; + case 100: url = URL_100M; + break; + default: fprintf(stderr, "\r%s: invalid parameter %s\n", + appname, *argv + 3); + exit(1); + } + } else { + fprintf(stderr, "\r%s: invalid or unknown option %s\n", + appname, *argv); + exit(1); + } + } else { + url = *argv; + } + } + } + + /* print separator line */ + if (prtsep) { + printf("-------------------------------------------------\n"); + } + /* print localtime */ + if (prttime) { + time_t t = time(NULL); + printf("Localtime: %s", ctime(&t)); + } + + /* init libcurl */ + curl_global_init(CURL_GLOBAL_ALL); + + /* init the curl session */ + curl_handle = curl_easy_init(); + + /* specify URL to get */ + curl_easy_setopt(curl_handle, CURLOPT_URL, url); + + /* send all data to this function */ + curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteCallback); + + /* some servers don't like requests that are made without a user-agent + field, so we provide one */ + curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, + "libcurl-speedchecker/" CHKSPEED_VERSION); + + /* get it! */ + res = curl_easy_perform(curl_handle); + + if(CURLE_OK == res) { + double val; + + /* check for bytes downloaded */ + res = curl_easy_getinfo(curl_handle, CURLINFO_SIZE_DOWNLOAD, &val); + if((CURLE_OK == res) && val) + printf("Data downloaded: %0.0f bytes.\n", val); + + /* check for total download time */ + res = curl_easy_getinfo(curl_handle, CURLINFO_TOTAL_TIME, &val); + if((CURLE_OK == res) && val) + printf("Total download time: %0.3f sec.\n", val); + + /* check for average download speed */ + res = curl_easy_getinfo(curl_handle, CURLINFO_SPEED_DOWNLOAD, &val); + if((CURLE_OK == res) && val) + printf("Average download speed: %0.3f kbyte/sec.\n", val / 1024); + + } else { + printf("Errror while fetching '%s' : %s\n", url, curl_easy_strerror(res)); + } + + /* cleanup curl stuff */ + curl_easy_cleanup(curl_handle); + + /* we're done with libcurl, so clean it up */ + curl_global_cleanup(); + + return 0; +} |