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                     23: .TH CURLINFO_OS_ERRNO 3 "March 23, 2020" "libcurl 7.70.0" "curl_easy_getinfo options"
                     24: 
                     25: .SH NAME
                     26: CURLINFO_OS_ERRNO \- get errno number from last connect failure
                     27: .SH SYNOPSIS
                     28: #include <curl/curl.h>
                     29: 
                     30: CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_OS_ERRNO, long *errnop);
                     31: .SH DESCRIPTION
                     32: Pass a pointer to a long to receive the errno variable from a connect failure.
                     33: Note that the value is only set on failure, it is not reset upon a successful
                     34: operation. The number is OS and system specific.
                     35: .SH PROTOCOLS
                     36: All
                     37: .SH EXAMPLE
                     38: .nf
                     39: CURL *curl = curl_easy_init();
                     40: if(curl) {
                     41:   CURLcode res;
                     42:   curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
                     43:   res = curl_easy_perform(curl);
                     44:   if(res != CURLE_OK) {
                     45:     long error;
                     46:     res = curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &error);
                     47:     if(res && error) {
                     48:       printf("Errno: %ld\\n", error);
                     49:     }
                     50:   }
                     51:   curl_easy_cleanup(curl);
                     52: }
                     53: .fi
                     54: .SH AVAILABILITY
                     55: Added in 7.12.2
                     56: .SH RETURN VALUE
                     57: Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
                     58: .SH "SEE ALSO"
                     59: .BR curl_easy_getinfo "(3), " curl_easy_setopt "(3), "