CURLINFO_RETRY_AFTER - returns the Retry-After retry delay

Added in curl 7.66.0

Zero if there was no header.

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) always returns the number of seconds to wait - or zero if there was no header or the header could not be parsed. This option used to return a negative wait time if the server provided a date in the past. Since 8.12.0, a negative wait time is returned as zero. In any case we recommend checking that the wait time is within an acceptable range for your circumstance.

int main(void) { 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); } }

CURLINFO_RETRY_AFTER - returns the Retry-After retry delay

This functionality affects all supported protocols

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).

CURLOPT_HEADERFUNCTION(3), CURLOPT_STDERR(3), curl_easy_header(3) libcurl 2025-06-16 CURLINFO_RETRY_AFTER(3)

#include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_RETRY_AFTER, curl_off_t *retry);