---
name: "CURLINFO_HTTP_VERSION"
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_HTTP_VERSION"
---

# CURLINFO\_HTTP\_VERSION(3)

HTTP version used in the transfer

## NAME

CURLINFO\_HTTP\_VERSION - HTTP version used in the transfer

## SYNOPSIS

```
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_HTTP_VERSION, long *p);
```

## DESCRIPTION

Pass a pointer to a long to receive the version used in the last http transfer done using this handle. The returned value is CURL\_HTTP\_VERSION\_1\_0, CURL\_HTTP\_VERSION\_1\_1, CURL\_HTTP\_VERSION\_2\_0, CURL\_HTTP\_VERSION\_3 or 0 if the version cannot be determined.

## PROTOCOLS

This functionality affects http only

## 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) {
      long http_version;
      curl_easy_getinfo(curl, CURLINFO_HTTP_VERSION, &http_version);
    }
    curl_easy_cleanup(curl);
  }
}
```

## AVAILABILITY

Added in curl 7.50.0

## 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\_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)