---
name: "CURLINFO_SCHEME"
section: "3"
platform: "linux"
package: "curl"
version: "8.23.0-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux", "macos"]
url: "https://new.carta.tech/CURLINFO_SCHEME"
---

# CURLINFO\_SCHEME(3)

URL scheme used in transfer

## 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)](/curl_easy_cleanup/3.md)* 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)](/curl_easy_getinfo/3.md)* returns a CURLcode indicating success or error.

CURLE\_OK (0) means everything was OK, non-zero means an error occurred, see *[libcurl-errors(3)](/libcurl-errors/3.md)*.

## SEE ALSO

[**CURLINFO\_EFFECTIVE\_URL**(3)](/CURLINFO_EFFECTIVE_URL/3.md), [**CURLINFO\_PROTOCOL**(3)](/CURLINFO_PROTOCOL/3.md), [**CURLINFO\_RESPONSE\_CODE**(3)](/CURLINFO_RESPONSE_CODE/3.md), [**curl\_easy\_getinfo**(3)](/curl_easy_getinfo/3.md), [**curl\_easy\_setopt**(3)](/curl_easy_setopt/3.md)