Headers names lowercased

[mathieucollet]

Hello everyone,

I have a problem when I set up the proxy.

// Axios
axios: {
  proxy: true,
},

// Proxy
proxy: {
  '/api': {
    target: process.env.NUXT_ENV_BACKEND_API,
    pathRewrite: { '^/api': '/' },
    changeOrigin: false,
  },
},

The names of the Headers (Authorization, Host, etc...) are minuscule and causes errors on the back side which does not find the Headers it expects.

I may be doing a bad manipulation, but I'm lost.

From (expected result):

After (with axios proxy true):

[Sébastien Chopin]

Hi @mathieucollet

This module uses http-proxy-middleware under the hood, you may want to set preserveHeaderKeyCase: true, see https://github.com/chimurai/http-proxy-middleware#http-proxy-options

[mathieucollet]

Thanks @Atinux for your time you took to answer me.

As you suggested, i tried to add the option preserveHeaderKeyCase: true but it doesn't change back my headers names.

Again, i'm maybe doing something wrong.

[Pooya Parsa]

Hi. Actually this is NodeJS behavior that makes incoming header names to lowercase since by rfc7230#section-3.2 headers are case-incentive and this behavior allows having duplicate headers with different case. Proxy module option is meant for response handling and it is recommended not changing it to avoid inconsistency.