I have upload a zip file compressed with WinRAR containing a txt file into my github test Repo, how I could download the zip file using curl?
I tried:
static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream)
{
size_t written = fwrite(ptr, size, nmemb, (FILE *)stream);
return written;
}
void Download(std::string url)
{
CURL *curl_handle;
static const char *pagefilename = "data.zip";
FILE *pagefile;
curl_global_init(CURL_GLOBAL_ALL);
/* init the curl session */
curl_handle = curl_easy_init();
/* set URL to get here */
curl_easy_setopt(curl_handle, CURLOPT_URL, url.c_str());
/* Switch on full protocol/debug output while testing */
curl_easy_setopt(curl_handle, CURLOPT_VERBOSE, 1L);
/* disable progress meter, set to 0L to enable and disable debug output */
curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L);
/* send all data to this function */
curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data);
/* open the file */
pagefile = fopen(pagefilename, "wb");
if(pagefile) {
/* write the page body to this file handle */
curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, pagefile);
/* get it! */
CURLCode res;
res = curl_easy_perform(curl_handle);
/* close the header file */
fclose(pagefile);
}
/* cleanup curl stuff */
curl_easy_cleanup(curl_handle);
curl_global_cleanup();
return;
}
Download("https://github.com/R3uan3/test/files/9544940/test.zip");
CURLCode res return (CURLE_OK) but it create a file data.zip of 0 bytes, what's wrong?
I checked with
curl -I https://github.com/R3uan3/test/files/9544940/test.zip
It gets
HTTP/2 302
...
location: https://objects.githubusercontent.com/github-production-rep...
In other words: this is a redirect and you did not ask libcurl to follow redirects - so you only get that first response stored (which has a zero byte body).
You can make libcurl follow the redirect by adding this line to your code:
curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1L);