type: google.api.Service config_version: 3 name: fcmconnection.googleapis.com title: FCM Connection API apis: - name: google.firebase.fcm.connection.v1alpha1.ConnectionApi documentation: summary: An API to connect clients to receive FCM messages. overview: |- The FCM Connection API allows developers’ client applications to create long-lived bi-directional gRPC connections with FCM in order to receive & send messages from/to their respective app servers. Historically, developers could only send push notifications/messages to Android, iOS & browsers. This API allows all gRPC supported client platforms to connect to FCM.