CURLINFO_OS_ERRNO explained

Name

CURLINFO_OS_ERRNO - get errno number from last connect failure

Synopsis

#include <curl/curl.h>
 
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_OS_ERRNO, long *errnop);

Description

Pass a pointer to a long to receive the errno variable from a connect failure. Note that the value is only set on failure, it is not reset upon a successful operation. The number is OS and system specific.

Protocols

All

Example

CURL *curl = curl_easy_init();
if(curl) {
  CURLcode res;
  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
  res = curl_easy_perform(curl);
  if(res != CURLE_OK) {
    long error;
    res = curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &error);
    if(res && error) {
      printf("Errno: %ld\n", error);
    }
  }
  curl_easy_cleanup(curl);
}

Availability

Added in 7.12.2

Return value

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.