CURLINFO_SCHEME(3) Library Functions Manual CURLINFO_SCHEME(3)
NAME
CURLINFO_SCHEME - URL scheme used in transfer
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_SCHEME, char **scheme);
DESCRIPTION
Pass a pointer to a char pointer to receive the pointer to a
null-terminated string holding the URL scheme used for the most recent
transfer done with this CURL handle. The scheme might also sometimes be
referred to as the protocol.
The scheme pointer is NULL or points to private memory. You must not
free it. The memory gets freed automatically when you call
curl_easy_cleanup(3) on the corresponding curl handle.
The returned scheme might be upper or lowercase. Do comparisons case
insensitively.
PROTOCOLS
This functionality affects all supported protocols
EXAMPLE
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode result;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
result = curl_easy_perform(curl);
if(result == CURLE_OK) {
char *scheme = NULL;
curl_easy_getinfo(curl, CURLINFO_SCHEME, &scheme);
if(scheme)
printf("scheme: %s\n", scheme); /* scheme: HTTP */
}
curl_easy_cleanup(curl);
}
}
AVAILABILITY
Added in curl 7.52.0
RETURN VALUE
curl_easy_getinfo(3) returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non-zero means an error occurred,
see libcurl-errors(3).
SEE ALSO
CURLINFO_EFFECTIVE_URL(3), CURLINFO_PROTOCOL(3),
CURLINFO_RESPONSE_CODE(3), curl_easy_getinfo(3), curl_easy_setopt(3)
libcurl 2026-03-23 CURLINFO_SCHEME(3)
curl 8.19.0 - Generated Thu Mar 26 15:58:22 CDT 2026