EventSub is expecting an unspecified Content-Type in verify response

lu4t · January 31, 2022, 12:12pm

utf-8 is added by default, and cannot be changed, read:

github.com/expressjs/express

No way to disable charset in Content-Type header?

opened 02:46PM - 29 Nov 17 UTC

closed 03:22PM - 29 Nov 17 UTC

tomasruud

question

I'm developing an API that will replace another API implemented in another langu…age. Because the clients for this API are implemented badly, they don't accept content types other than "application/json" this means that "application/json; charset=utf-8" breaks them. Currently, I've been trying to use this middleware before my routes to prevent the charset from being appended: ```js app.use((req, res, next) => { res.setHeader('Content-Type', 'application/json'); return next(); }); ``` I usually end responses like this `res.status(404).json('Not found')`, but with the middleware I'm using, it doesn't seem to work. I've tried to look at the Express code, and from what I can tell, if I use the Express function `set()`, `header()` or `type()` the charset automatically gets appended. So when I use the native `setHeader()` function I thought that would work. When I use the native method, it doesn't seem like it should be overridden, because the `res.json()` function checks if the header is already set before trying to set it, which also uses the native `getHeader()` function. Is there any way I can get around this, without changing how reponses are sent or am I doing something wrong?