Scroll to navigation

CURLINFO_RETRY_AFTER(3) curl_easy_getinfo options CURLINFO_RETRY_AFTER(3)

NAME

CURLINFO_RETRY_AFTER - returns the Retry-After retry delay

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_RETRY_AFTER, curl_off_t *retry);

DESCRIPTION

Pass a pointer to a curl_off_t variable to receive the number of seconds the HTTP server suggests the client should wait until the next request is issued. The information from the "Retry-After:" header.

While the HTTP header might contain a fixed date string, the CURLINFO_RETRY_AFTER(3) will always return number of seconds to wait - or zero if there was no header or the header couldn't be parsed.

DEFAULT

Returns zero delay if there was no header.

PROTOCOLS

HTTP(S)

EXAMPLE

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) {
curl_off_t wait = 0;
curl_easy_getinfo(curl, CURLINFO_RETRY_AFTER, &wait);
if(wait)
printf("Wait for %" CURL_FORMAT_CURL_OFF_T " seconds\n", wait);
}
curl_easy_cleanup(curl); }

AVAILABILITY

Added in curl 7.66.0

RETURN VALUE

Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

CURLOPT_STDERR(3), CURLOPT_HEADERFUNCTION(3),

November 4, 2020 libcurl 7.79.1