FCM over UP

[yu-re-ka]

source

digraph {
    subgraph cluster_phone {
        label="end user device";

        microG -> "FCM App e.g. Signal" [color=red]
        "UP distributor" -> "UP App e.g. SchildiChat" [color=green]
        "UP distributor" -> microG [color=red]
    }

    subgraph cluster_my_server {
        label="my server";
        "eg. gotify"
        "My FCM Proxy" -> "eg. gotify" [color=red]
    }

    "eg. gotify" -> "UP distributor" [color=red]
    "eg. gotify" -> "UP distributor" [color=green]

    subgraph cluster_google {
        label="google"
        "Google push servers"
    }

    "Google push servers" -> "My FCM Proxy" [color=red]
    "e.g. Matrix push gateway" -> "eg. gotify" [color=green]
    "e.g. Signal server" -> "Google push servers" [color=red]

    subgraph cluster_fcm_application_server {
        label="FCM application server"
        "e.g. Signal server"
    }
    subgraph cluster_up_application_server {
        label="UP application server"
        "e.g. Matrix push gateway"
    }
}

The advantage:

Only one push connection required on my device
Google doesn't see my phone's IP

[p1gp1g]

Codeberg issue: https://codeberg.org/UnifiedPush/wishlist/issues/12