72 lines
1.5 KiB
Markdown
72 lines
1.5 KiB
Markdown
---
|
|
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
|
|
SPDX-License-Identifier: curl
|
|
Title: CURLINFO_RETRY_AFTER
|
|
Section: 3
|
|
Source: libcurl
|
|
See-also:
|
|
- CURLOPT_HEADERFUNCTION (3)
|
|
- CURLOPT_STDERR (3)
|
|
- curl_easy_header (3)
|
|
---
|
|
|
|
# NAME
|
|
|
|
CURLINFO_RETRY_AFTER - returns the Retry-After retry delay
|
|
|
|
# SYNOPSIS
|
|
|
|
~~~c
|
|
#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) always returns the number of seconds to wait -
|
|
or zero if there was no header or the header could not be parsed.
|
|
|
|
# DEFAULT
|
|
|
|
Returns zero delay if there was no header.
|
|
|
|
# PROTOCOLS
|
|
|
|
HTTP(S)
|
|
|
|
# EXAMPLE
|
|
|
|
~~~c
|
|
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 7.66.0
|
|
|
|
# RETURN VALUE
|
|
|
|
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
|