Can't access FireBase Database via HTTP/REST error 403 Forbidden

Question

Swift + Vapor framework for server + Xcode 8.1

I am trying to read Firebase Realtime Database making HTTP requests to my DB, but I get permission denied.

Th

Answer 1

headers: ["Authorization":"Authorization: Bearer \(accesstoken)"],

should be

headers: ["Authorization":"Bearer \(accesstoken)"],

Answer 2

The scope key was missing value https://www.googleapis.com/auth/userinfo.email

 let jwtClaimSet =
   ["iss":"firebase-adminsdk-kxx5h@fir-30c9e.iam.gserviceaccount.com",
 "scope": "https://www.googleapis.com/auth/firebase.database  
 https://www.googleapis.com/auth/userinfo.email", 
 "aud":"https://www.googleapis.com/oauth2/v4/token",
 "exp": expDate,
 "iat": iatDate]

I found the answer browsing google groups here

Answer 3

TLDR; Try placing auth=<TOKEN> in your query string instead of using the authorization header.

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The Firebase documentation is unclear on how this works. According to the documentation, there are three methods that should work.

1. auth=<TOKEN> in query string (link)
2. access_token=<TOKEN> in query string (link)
3. Authorization: Bearer <TOKEN> in request header (link)

I'm not convinced that all three methods do actually work however. I'm using method 1 in my application, so I know that one works for sure.