[nodebb-plugin-blog-comments] Unable to post topic error

[Danny McWilliams]

Hi guys, running into a problem here when trying to tie the plugin into my blog and forum.

Forum is hosted at: http://www.onlyanexcuse.com
Blog is at: http://www.onlyanexcuse.com/wordpress (for now, plan to move it later but want to get this working first to test it after it went pear shaped last time).

I have installed JSON API on Wordpress, plugin is installed on my forum (NodeBB v0.7.0.), Comments section has been replaced with the following:

<?php
if ( post_password_required() )
    return;
?>

<a id="nodebb/comments"></a>
<script type="text/javascript">
var nodeBBURL = 'http://www.onlyanexcuse.com',
articleID = '<?php echo the_ID(); ?>';

(function() {
var nbb = document.createElement('script'); nbb.type = 'text/javascript'; nbb.async = true;
nbb.src = nodeBBURL + '/plugins/nodebb-plugin-blog-comments/lib/wordpress.js';
(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(nbb);
})();
</script>
<noscript>Please enable JavaScript to view comments</noscript>

And the settings in the plugin page on ACP are as follows:

All good so far. When I publish an article, I get a button underneath it to "Publish this article to NodeBB".

When clicked, I get this error:

{"error":"Unable to post topic"}

And this comes up in my error logs in nodebb/logs/output.log:

9/6 16:54 [5926] - warn: [nodebb-plugin-blog-comments] Origin (undefined) does not match hostUrls: http://www.onlyanexcuse.com/wordpress

Could @psychobunny or anyone else see where I may be going wrong?

Additional note: In the "comments.php" file, i've used both "http://www.onlyanexcuse.com" and "//www.onlyanexcuse.com". Both produce the same result.

[rbeer]

The Origin field seems to be not set in your servers request header.
That's what Origin (undefined) does..., especially the undefined part is telling you.

Why that is, I can't tell since I'm not familiar with the plugin. Though, I doubt that this problem arises on the NodeBB side. It's rather the job of the sender (nodebb is the receiving end, here) to add that Origin field. Meaning: Your plugin seems to be set up correctly, it just isn't receiving anything to compare your set URL against.

[Danny McWilliams]

Thanks @rbeer that's an avenue to persue for now. Wordpress is doing the sending, and it was set up on my server after NodeBB, and there were a few things I had to fix before I could get it working properly; it wasn't a one-click install or anything.

[psychobunny]

Did you figure it out? I went to your website and didn't notice any nodebb related code in the source: http://www.onlyanexcuse.com/wordpress/another-go/

[Danny McWilliams]

@psychobunny I was chatting to @rbeer on here and literally just switched the theme back to twentyfifteen, which I had edited and tested with. You may have caught it just before I did that, I was playing about with different themes earlier. If you could have another look it should show up

[rbeer]

Well, the requests to Google (for the fonts) e.g. do have the Origin set to your domain (http://www.onlyanexcuse.com).

Just for the kicks, you could try to add a:

XHR.setRequestHeader('Origin', 'http://www.onlyanexcuse.com');

just before the .send() call.

This way you could rule out nginx misconfiguration. I would argue, at least, since then you know for sure, that the client is sending the correct request header.

edit: whoops - setRequestHeader, not addRequestHeader

[psychobunny]

If that works I can update this plugin to send that header by default

[Danny McWilliams]

Thanks @rbeer, unsure exactly where to add that; is it in the Wordpress.js and if so which line?

[rbeer]

@Danny-McWilliams
Yes, that's wordpress.js, Line #185. But before that, since .send() executes the request. You'll have to set it up, i.e. add headers, before calling it.

But I stumbled upon something else: https://html.spec.whatwg.org/multipage/browsers.html#same-origin

Just ain't got the time to go through this. Maybe that's also of interest to you, @psychobunny. I can imagine, same-origin applies more often with this plugin. And maybe there's the difference, since e.g. blog.nodebb.org sits on another (sub-)domain, opposed to what @Danny-McWilliams is trying to do here (http://domain.com to http://domain.com/wordpress)

[Danny McWilliams]

Thanks @rbeer, still no further but as you say I need to add the appropriate headers to get it working.

The site is now on the following structure:

http://www.onlyanexcuse.com - wordpress
http://forum.onlyanexcuse.com - nodebb

And the same problem persists. As for adding the header, I think i'll need to see why Wordpress isn't and how to fix it.