fix: don't set if-modified-since header when discover feeds

Signed-off-by: Wolfgang <[email protected]>

Author: wofferl

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Add logic to set the node's link from the <guid> element when isPermaLink="true" and no link is present. (#12)
 - Do no longer default to 1800-01-01 as date for fetching feeds (#15)
+- don't set if-modified-since header when discover feeds (#19)
 
 ### Fixed
 - Analysis of relative links for the Atom feed (#10)

src/FeedIo/Explorer.php

@@ -26,7 +26,7 @@ public function __construct(
     public function discover(string $url): array
     {
         $this->logger->info("discover feeds from {$url}");
-        $stream = $this->client->getResponse($url, new DateTime('@0'));
+        $stream = $this->client->getResponse($url, null);
 
         $internalErrors = libxml_use_internal_errors(true);
         $feeds = $this->extractFeeds($stream->getBody(), $url);