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.TH CURLINFO_OS_ERRNO 3 "November 04, 2020" "libcurl 7.77.0" "curl_easy_getinfo options"

.SH NAME
CURLINFO_OS_ERRNO \- get errno number from last connect failure
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_OS_ERRNO, long *errnop);
.SH 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.
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
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);
}
.fi
.SH AVAILABILITY
Added in 7.12.2
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR curl_easy_getinfo "(3), " curl_easy_setopt "(3), "
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