CURLINFO_RETRY_AFTER explained
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 always returns the number of seconds to wait - or zero if there was no header or the header could not be parsed.
Default
Zero if there was no header.
Protocols
This functionality affects all supported protocols
Example
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); } }
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_HEADERFUNCTION(3), CURLOPT_STDERR(3), curl_easy_header(3)
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