1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLINFO_OS_ERRNO 5Section: 3 6Source: libcurl 7See-also: 8 - curl_easy_getinfo (3) 9 - curl_easy_setopt (3) 10Protocol: 11 - All 12--- 13 14# NAME 15 16CURLINFO_OS_ERRNO - get errno number from last connect failure 17 18# SYNOPSIS 19 20~~~c 21#include <curl/curl.h> 22 23CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_OS_ERRNO, long *errnop); 24~~~ 25 26# DESCRIPTION 27 28Pass a pointer to a long to receive the errno variable from a connect failure. 29Note that the value is only set on failure, it is not reset upon a successful 30operation. The number is OS and system specific. 31 32# EXAMPLE 33 34~~~c 35int main(void) 36{ 37 CURL *curl = curl_easy_init(); 38 if(curl) { 39 CURLcode res; 40 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); 41 res = curl_easy_perform(curl); 42 if(res != CURLE_OK) { 43 long error; 44 res = curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &error); 45 if(res && error) { 46 printf("Errno: %ld\n", error); 47 } 48 } 49 curl_easy_cleanup(curl); 50 } 51} 52~~~ 53 54# AVAILABILITY 55 56Added in 7.12.2 57 58# RETURN VALUE 59 60Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 61
