1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLINFO_RETRY_AFTER 5Section: 3 6Source: libcurl 7See-also: 8 - CURLOPT_HEADERFUNCTION (3) 9 - CURLOPT_STDERR (3) 10 - curl_easy_header (3) 11Protocol: 12 - All 13--- 14 15# NAME 16 17CURLINFO_RETRY_AFTER - returns the Retry-After retry delay 18 19# SYNOPSIS 20 21~~~c 22#include <curl/curl.h> 23 24CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_RETRY_AFTER, 25 curl_off_t *retry); 26~~~ 27 28# DESCRIPTION 29 30Pass a pointer to a curl_off_t variable to receive the number of seconds the 31HTTP server suggests the client should wait until the next request is 32issued. The information from the "Retry-After:" header. 33 34While the HTTP header might contain a fixed date string, the 35CURLINFO_RETRY_AFTER(3) always returns the number of seconds to wait - 36or zero if there was no header or the header could not be parsed. 37 38# DEFAULT 39 40Returns zero delay if there was no header. 41 42# EXAMPLE 43 44~~~c 45int main(void) 46{ 47 CURL *curl = curl_easy_init(); 48 if(curl) { 49 CURLcode res; 50 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); 51 res = curl_easy_perform(curl); 52 if(res == CURLE_OK) { 53 curl_off_t wait = 0; 54 curl_easy_getinfo(curl, CURLINFO_RETRY_AFTER, &wait); 55 if(wait) 56 printf("Wait for %" CURL_FORMAT_CURL_OFF_T " seconds\n", wait); 57 } 58 curl_easy_cleanup(curl); 59 } 60} 61~~~ 62 63# AVAILABILITY 64 65Added in 7.66.0 66 67# RETURN VALUE 68 69Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 70