Bearer Token returns undefined

[4e576rt8uh9ij9okp]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the bug has not already been reported

Fastify version

4.28.1

Plugin version

9.0.1

Node.js version

22.7

Operating system

Linux

Operating system version (i.e. 20.04, 11.3, 10)

Arch Linux

Description

I am sending a bearer auth token using fetch and on the server side (nodejs).
NodeJS logs the token twice not once. The first log shows auth token being undefined, the second log shows the token.

// Nodejs
app.addHook('onRequest', (req, rep, done) => {
    const auth = req.headers.authorization
    console.log(req.url, "auth", auth)
    done()
})

// Browser
const getData = await fetch(apiUrl, {
    method: "GET",
    headers: {
        'Authorization': `bearer ${key}`,
        'Content-Type': 'application/json',
        'origin': "*"
    }
})

What it returns

/music auth undefined
/music auth bearer secrettoken

Expected

/music auth bearer secrettoken

I'm not sure where the first request is coming from, I have also noticed that when I'm sending the request multiple times the auth token always shows, but then every ~4s it shows the auth undefined.

Link to code that reproduces the bug

No response

Expected Behavior

Not having a undefined auth token, as I am sending it over fetch() it should always be "defined" on nodejs.

[mcollina]

Thanks for reporting!

Can you provide steps to reproduce? We often need a reproducible example, e.g. some code that allows someone else to recreate your problem by just copying and pasting it. If it involves more than a couple of different file, create a new repository on GitHub and add a link to that.