27 lines
1.1 KiB
Plaintext
27 lines
1.1 KiB
Plaintext
:experimental:
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:docdatetime: 2022-10-18T17:56:27+02:00
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= Simple Callback Server
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This is probably my simplest project.
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== What is this?
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It's the simplest thing you could imagine: An `express` server that prints out all headers and the body or all query parameters.
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Still, I needed it sometimes and I didn't want to rewrite it every time I use it.
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== What can it be used for?
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When creating a dev application on Google, Spotify, or other services you often have some heavy authentication flow to get access.
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But normally I want to use the API for private projects and it's _my_ account that gets authenticated every time.
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To make reauthentication easier these OAuth protocols often provide a "refresh token" which can be used to get a valid new token.
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To get the initial authentication token and to get such a refresh token you provide a callback address where you get redirected after the user logs in.
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The tokens and meta information normally are sent in a `POST` body.
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And this is where this small application is necessary.
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=== This sounds overly complicated
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It is. But this is necessary for OAuth2 to be safe.
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