Error 400 Bad Request about... missing target AND source parameter? Even though the request says it's there.

[ShadowKyogre]

Testing Data	Value
Source URL	https://aeons-library.gq/inspiration/media
Target URL[0]	https://brid.gy/publish/twitter
Target URL[1]	https://fed.brid.gy/webmention
PW Versions	3.0.148, 3.0.165 (both have the same error message)

Log entries copied from my site::

Error sending webmention for https://brid.gy/publish/twitter to https://brid.gy/publish/webmention. Response was HTTP 400|400|source=https%3A%2F%2Fwww.aeons-library.gq%2Finspiration%2Fmedia%2F&target=https%3A%2F%2Fbrid.gy%2Fpublish%2Ftwitter|HTTP Error 400: 400 Bad Request The server could not comply with the request since it is either malformed or otherwise incorrect. Missing required parameter: target

Error sending webmention for https://fed.brid.gy to https://fed.brid.gy/webmention. Response was HTTP 400|400|source=https%3A%2F%2Fwww.aeons-library.gq%2Finspiration%2Fmedia%2F&target=https%3A%2F%2Ffed.brid.gy|HTTP Error 400: 400 Bad Request The server could not comply with the request since it is either malformed or otherwise incorrect. Missing required parameter: source

When I'm reading the source code, I'm getting very uh... confused at why the requests are malformed. It seems to contain everything that's needed to send a webmention out. But the endpoints listed are saying the request is malformed.

I'm not sure what else to do to write a patch, hence why filing this bug report.

---

Edit[0]: Tested sending a webmention with https://indiewebify.me/ on the same URL. Was able to receive a webmention from myself. I'll try to get a dump of what's going on with Tracy Debugger when interacting with brid.gy.

[gRegorLove]

Hm, that's odd. Have you successfully used Bridgy Publish with this plugin before, or is it consistently giving you this error?

[ShadowKyogre]

@gRegorLove - Consistently giving this error. I'm not sure why, but, here's one of the bar dumps I got from trying this just now.

Dumps generated with the following code inserted after line 1284 in the main Webmention module

        barDump($endpoint, "Webmention Endpoint");
        barDump($data, "Request data");
        barDump($http, "HTTP instance");

[gRegorLove]

I tried sending the webmention with cURL and the response body has more details. Looks like your Twitter account needs to be updated to link back to your site.

This bug is a good reminder for me that I need to improve error logging to capture response bodies like this instead of just the HTTP status response, so thank you!

curl -i -d source=https://aeons-library.gq/inspiration/media -d target=https://brid.gy/publish/twitter https://brid.gy/publish/webmention

HTTP/2 400
content-type: application/json; charset=utf-8
cache-control: no-cache
access-control-allow-origin: *
content-security-policy: script-src https: localhost:8080 my.dev.com:8080 'unsafe-inline'; frame-ancestors 'self'; report-uri /csp-report;
strict-transport-security: max-age=16070400; preload
x-content-type-options: nosniff
x-frame-options: SAMEORIGIN
x-xss-protection: 1; mode=block
x-cloud-trace-context: 21898ce60eb8cebfed6bbe220761907d
date: Thu, 10 Dec 2020 17:47:05 GMT
server: Google Frontend
content-length: 212

{
  "error": "Could not find <b>Twitter</b> account for <b>aeons-library.gq</b>. Check that your Twitter profile has aeons-library.gq in its <em>web site</em> or <em>link</em> field, then try signing up again."
}