I have a server that uses Hawk authentication (Django Rest Framework).

When making authenticated requests, I have no trouble with the python `requests` package.

However, when using the javascript `axios` package, the `Authorization` header doesn't reach my authentication middleware.

**Python request with `requests`, works**

```
->
GET /logout/ HTTP/1.1
Host: localhost:8000
Accept-Encoding: identity
Authorization: Hawk mac="sPJZet9eQKyBZSBpbGVQefPzsfBIXNFJDWAPF93n6fA=", hash="q/t+NNAkQZNlq/aAD6PlexImwQTxwgT2MahfTa9XRLA=", id="z1dkOdDr", ts="1528778355", nonce="gBZQRS"

<-
HTTP/1.1 200 OK
Date: Tue, 12 Jun 2018 04:39:15 GMT
Server: WSGIServer/0.2 CPython/3.6.4
Content-Type: application/json
Vary: Accept
Allow: GET, HEAD, OPTIONS
Server-Authorization: Hawk mac="jBlHlyWCkirfBafbfw+N4iadwuQEsX99pATGXqxjOCY=", hash="2BRBGFjKOpKo9GffbS9rYZddAd5xoq/WdfD0Fm9wDhk="
X-Frame-Options: SAMEORIGIN
Content-Length: 41
{"detail": "user secret has been changed"}

```

**JS request with `axios`, fails because the auth middleware does not see `Authorization` in the headers:**

```
->
GET /logout/ HTTP/1.1
Accept: application/json, text/plain, */*
Authorization: Hawk id="7RdDRgkJ", ts="1528778122", nonce="TQWhoS", mac="nrX3bJbVF1wQt/tWrmUf/y/oEmAE6oFPyM5uP5sqzLg="
User-Agent: axios/0.18.0
Host: localhost:8000
Connection: close

<-
HTTP/1.1 401 Unauthorized
Date: Tue, 12 Jun 2018 04:35:22 GMT
Server: WSGIServer/0.2 CPython/3.6.4
Content-Type: application/json
WWW-Authenticate: Hawk
Vary: Accept
Allow: GET, HEAD, OPTIONS
X-Frame-Options: SAMEORIGIN
Content-Length: 39
{"detail": "Hawk authentication failed"}

```

The differences seem nominal. What could be creating the issue? The `Authorization` header is definitely be stripped before it the request reaches the authentication middleware, but I can't figure out where.