Why is my YouTube webhook subscription request giving the error "Invalid hub.mode value"?

I'm attempting to sign up for a webhook (receiving notifications) on YouTube, but I keep encountering the error message Invalid value for hub.mode, despite confirming that it is set as "subscribe."

Below is the content of my request:

{
  "hub.callback": "http://x.x.x.x:xxxx/xxxxxxx",
  "hub.topic": "https://www.youtube.com/xml/feeds/videos.xml?channel_id=x",
  "hub.verify": "async",
  "hub.mode": "subscribe",
  "hub.verify_token": verifyToken,
  "hub.secret": secret,
  "hub.lease_seconds": 864000
}

I also attempted using capitalized letters, but that did not resolve the issue. Do you have any suggestions or insights on why this may be happening? While my explanation is brief and lacks additional context, I am unable to provide more details at this time. Any assistance would be greatly appreciated.

javascriptyoutube-data-apiwebhooks

Answer №1

Hats off to Intoxicated Penguin for recommending the idea of including the post data as a query in the URL itself, it definitely did the trick.

Therefore, my route transformed from /subscribe to 

/subscribe?hub.callback=xxx...&hub.mode=subscribe
and ever since then, it has been functioning perfectly!

Answer №2

I discovered another reason for the occurrence of this issue: when the content type is not specified as multipart/form-data

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