FCM HTTP v1：如何使用Go获取访问令牌？

Question

In order to send Firebase Cloud Messaging with Go, we need to place the access token in the HTTP request header.

On Firebase documentation, there are examples on how to retrieve the access token using Node.JS, Python and Java:

https://firebase.google.com/docs/cloud-messaging/auth-server

can anyone show the get the access token using Go?

There seems to be many Go packages about Firebase/Google authentication. It's very confusing to understand which ones should be used:

• firebase.google.com/go
• firebase.google.com/go/auth
• github.com/firebase/firebase-admin-go
• google.golang.org/api/option
• golang.org/x/oauth2
• golang.org/x/oauth2/google
• github.com/google/google-api-go-client

Answer 1

I'm working on the go firebase SDK to add FCM HTTP v1.

For now it's almost finished, i have to write tests and integration tests, you can check the code here : https://github.com/chemidy/firebase-admin-go/tree/fcm/messaging

I will finish tests and send a PR maybe next week, (it's a little bit tricky to test on ios + android + web)