How to send device to device messages using Firebase Cloud Messaging?

Question

After searching the docs I could not find any info on how to send device to device messages using FCM without the use of an external server.

For example, if I was cr

Answer 1

Yes, it's possible to do it without any server. You can create a device group client side and then you exchange messages in the group. However there are limitations:

1. You have to use the same Google account on the devices
2. You can't send high priority messages

Reference: Firebase doc See the section "Managing device groups on Android client apps"