* Exclude local networks for domain-wide Retry-After
Retry-After will be applied by URL and not by domain for local networks.
fix https://github.com/FreshRSS/FreshRSS/issues/7880
* Improved logic for detection of local domains
* Support ip6-localhost and a couple more variants
* On more: .lan
* Resolve IP address
* Add .intranet
* Housekeeping lib_rss.php
`lib_rss.php` had become much too large, especially after https://github.com/FreshRSS/FreshRSS/pull/7924
Moved most functions to other places.
Mostly no change of code otherwise (see comments).
* Extension: composer run-script phpstan-third-party
* Create separate `Retry-After` files for proxies
Bad proxies are able to send a false `Retry-After` header and affect the availability of feeds (domain-wide) for other users.
This PR starts including the address of the proxy if present in filenames for `Retry-After` to mitigate the issue.
* Reduce code changes
* Sync SimplePie fork
https://github.com/FreshRSS/simplepie/pull/62
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Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>
* Implement support for HTTP 429 Too Many Requests
Will obey the corresponding HTTP `Retry-After` header at domain level.
* Implement 503 Service Unavailable
* Sanitize Retry-After
* Reduce default value when Retry-After is absent
And make configuration parameter
* Retry-After also for favicons
