Delta Chat Notification Proxy

The Delta Chat notification proxy is deployed as a central service on https://notifications.delta.chat

The notification proxy is a small Rust program that forwards "device tokens" to Apple and Google "Push Services" that in turn wake up the Delta Chat app on user's devices.

Usage

Certificates

The certificate file provided must be a .p12 file. Instructions for how to create can be found here.

Running

$ cargo build --release
$ ./target/release/notifiers --certificate-file <file.p12> --password <password>

Registering devices

$ curl -X POST -d '{ "token": "<device token>" }' http://localhost:9000/register

Enabling metrics

To enable OpenMetrics (Prometheus) metrics endpoint, run with --metrics argument, e.g. --metrics 127.0.0.1:9001. Metrics can then be retrieved with curl http://127.0.0.1:9001/metrics.