Return challenge field on subscription with Java (EventSub)

[darkpanda73]

@BarryCarlyon

Try using the twitch-cli to test your callback https://github.com/twitchdev/twitch-cli/blob/main/docs/event.md#verify-subscription

I’ll try to test it later, as I have to do something.

@BarryCarlyon

And/or visiting your callback URL yourself to test it works as expected.

I prepared the code to send an HTML code if that was the case, a sample that they shouldn’t use it with GET at the moment. I have lot to learn, as I could check that with the actual code, with a normal client, it gets stuck waiting for the content of the request. Also for Twitch, I saw that it takes long, like 4 seconds or more, until it gets the content after getting all the headers. At the end, with a normal web client, it got the HTML.