Valid feed but invalid feed URL

The RSS feeds you set up as Feed Sources using WP RSS Aggregator should pass all or most validation checks on W3C Feed Validation Service.

Our plugins can tolerate some errors in the feed, but it will be preferable that feeds pass all validation checks so that the plugin can correctly parse them.

If you need further support with this, could you please share the RSS feed you’re trying to use, if that isn’t a problem?

Hi,

I used this https://lindenau1848.de/feed/ . I just picked it randomly because it’s the only one that got tested valid on the W3C Feed Validation Service. But unfortunately the message in the feed preview always displays “Invalid feed URL – Double check the feed source URL setting above.”.

A couple of things I’ve found that cause that:

1) Spaces in front or behind the URL
2) When you copy the URL from a browser and paste it into your feed source it sometimes adds “feed:” to the beginning of the URL. If this happens delete the prefixed part so it’s properly formed.

Just my 2 cents.

Bill

@lra115

I’m able to fetch all 10 items from the RSS feed your’re using on a test machine.

Like @wgkrueger mentioned, can you check if there are any stray characters in the feed URL when you add it in the Feed Source Details box?

Also, when you publish the feed despite the error message, are you able to fetch the items anyway?

@hypersonic @wgkrueger

I checked it and there aren’t any stray characters in the feed URL.
When I publish the feed, I’m not able to fetch any items. The message is always “No feed items found.”.

Also it takes a very long time (over 2 minutes) to update the feed on the “Edit Feed Source” page.
I don’t know, but might the environment be a problem?

Maybe I do something wrong in the beginning? I add a new feed source at the “Feed Sources” page, name this feed and put the rss URL https://lindenau1848.de/feed/ in the input box. After this, I click on “Publish feed”. Then the error appears.

@lra115 Can you take a look at your setup’s debug log at RSS Aggregator > Tools > Logs? The log will record diagnostic messages each time you click ‘Fetch’ against a feed on RSS Aggregator > Feed Sources.

You could also refer to our knowledge base guides that describe the most common reasons for feeds failing to fetch and their resolution.

Do let us know your progress with troubleshooting. You can share some of the debug messages if they indicate that items are being skipped.

@hypersonic
I looked through the knowledge base guides, checked everything and it seems alright.
Also I checked the logs. Those are the one I get:

Failed to preview feed.: cURL error 28: Connection timed out after 120001 milliseconds

Failed to preview feed.: cURL error 7: Failed to connect to lindenau1848.de port 80: Connection timed out

They always fail to connect. Even if the rss url is valid.

Our plugin requires the cURL library for certain functions to execute, and these can be time consuming. The cURL error 28 is an indication of our plugin running out of time to complete a task.

The cURL error 7 occurs when there is a restriction emerging from your server or firewall, thus preventing certain operations.

For both these issues, you will need to contact your hosting provider and get them tweak the necessary configuration settings in your PHP engine and firewall.

Do let us know their feedback on this. This feedback will help other users facing similar issues.