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+# UnifiedPush over XMPP - gateway
+
+The gateway is an XMPP Component and Webserver.
+
+The Webserver recieve notificatons from application server by using an JWT-Token as Endpoint Token.
+The Signature JWT-Token is validated, so that only the Token generated by this gateway could be used (and no spaming over this Gateway is possible).
+The JWT-Token contains the XMPP-Address of the Distributor, so that this Gateway does not require to store anything.
+Current the JWT-Token is not encrypted like in [RFC 7516(https://tools.ietf.org/html/rfc7516) as an JWE [we are working on it](https://dev.sum7.eu/genofire/unified-push-xmpp/issues/5).
+So the XMPP-Address could be readed by Application-Server, Application and Distributor (and could be leaked there - we hope you could trust them till we implement JWE)
+
+
+The XMPP Component implements [XEP-0225](https://xmpp.org/extensions/xep-0225.html) it could be plugged in at every common server (like [ejabberd](https://docs.ejabberd.im/admin/configuration/listen/#ejabberd-service) or [Prosody](https://prosody.im/doc/components)) with an Secret and domain name.
+
+## Install
+
+How to configure this gateway take a look into the [config_example.toml](config_example.toml), we prefer it place it under `/etc/up-gateway.conf`
+
+The Builded `gateway` binary, we place it under `/usr/local/bin/up-gateway`.
+
+To get it running, we prefer following `systemd.service` file under `/etc/systemd/system/up-gateway.service`:
+```toml
+[Unit]
+Description=UnifiedPush gateway
+After=network.target
+After=ejabberd.service
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/up-gateway -c /etc/up-gateway.conf
+Restart=always
+RestartSec=5sec
+
+[Install]
+WantedBy=multi-user.target
+```
+
+And run `systemctl enable --now up-gateway.service` to startup and start at boot.
+
+## Demo Gateway
+An Demo gateway is running under Endpoint-Address [https://up.chat.sum7.eu/UP](https://up.chat.sum7.eu/UP) and under the XMPP-Address (jid of component) [xmpp:up.chat.sum7.eu](xmpp:up.chat.sum7.eu).
+Have fun by using it ;)