FreeBSD Manual Pages
CURLINFO_OS_ERRNO(3) Library Functions Manual CURLINFO_OS_ERRNO(3) NAME CURLINFO_OS_ERRNO - 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 fail- ure. Note that the value is only set on failure, it is not reset upon a successful operation. The number is OS and system specific. libcurl network-related errors that may have a saved errno are: CURLE_COULDNT_CONNECT, CURLE_FAILED_INIT, CURLE_INTERFACE_FAILED, CURLE_OP- ERATION_TIMEDOUT, CURLE_RECV_ERROR, CURLE_SEND_ERROR. Since 8.8.0 libcurl clears the easy handle's saved errno before performing the transfer. Prior versions did not clear the saved errno, which means if a saved errno is retrieved it could be from a previous transfer on the same handle. PROTOCOLS This functionality affects all supported protocols EXAMPLE int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode result; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); result = curl_easy_perform(curl); if(result != CURLE_OK) { long error; result = curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &error); if(!result && error) { printf("Errno: %ld\n", error); } } curl_easy_cleanup(curl); } } AVAILABILITY Added in curl 7.12.2 RETURN VALUE curl_easy_getinfo(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3). SEE ALSO curl_easy_getinfo(3), curl_easy_setopt(3) libcurl 2026-06-11 CURLINFO_OS_ERRNO(3)
NAME | SYNOPSIS | DESCRIPTION | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=CURLINFO_OS_ERRNO&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>