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e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
60 lines
1.2 KiB
Markdown
60 lines
1.2 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_OS_ERRNO
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Section: 3
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Source: libcurl
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See-also:
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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Protocol:
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- All
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---
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# NAME
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CURLINFO_OS_ERRNO - get errno number from last connect failure
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_OS_ERRNO, long *errnop);
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~~~
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# DESCRIPTION
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Pass a pointer to a long to receive the errno variable from a connect failure.
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Note that the value is only set on failure, it is not reset upon a successful
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operation. The number is OS and system specific.
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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res = curl_easy_perform(curl);
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if(res != CURLE_OK) {
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long error;
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res = curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &error);
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if(res && error) {
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printf("Errno: %ld\n", error);
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}
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}
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.12.2
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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