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#include <stdio.h>
#include <curl/curl.h>
size_t write_data(char *ptr, size_t size, size_t nmemb, void *userdata)
{
/* return size * nmemb; */
return fwrite(ptr, size, nmemb, (FILE *) userdata);
}
int main(int argc, char **argv)
{
if (argc != 2)
{
fprintf(stderr, "usage: %s <url>\n", argv[0]);
return 1;
}
CURL *curl_handle;
CURLcode ret;
curl_handle = curl_easy_init();
if (curl_handle)
{
curl_easy_setopt(curl_handle, CURLOPT_URL, argv[1]);
curl_easy_setopt(curl_handle, CURLOPT_HEADER, 1L);
/* 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-agent/1.0");
char err_buff[CURL_ERROR_SIZE];
curl_easy_setopt(curl_handle, CURLOPT_ERRORBUFFER, err_buff);
/* send all data to this function */
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data);
/* by default passes NULL aka stdout */
FILE *fl;
if ((fl = fopen("dump.curl", "w")))
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, fl);
else
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, stdout);
if ((ret = curl_easy_perform(curl_handle)) != CURLE_OK)
fprintf(stderr, "%s\n", err_buff);
else
{
/* ask for the content-type */
char *ct;
ret = curl_easy_getinfo(curl_handle, CURLINFO_CONTENT_TYPE, &ct);
if ((CURLE_OK == ret) && ct)
printf("Content-Type: %s\n", ct);
}
/* always cleanup */
fclose(fl);
curl_easy_cleanup(curl_handle);
}
return 0;
}
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