data-streams/osc-bridge

An OSC bridge server, enabling bi-directional OSC messaging between Websocket <-> UDP.

It is meant to be used by client apps, that use a Web Socket client to receive/send OSC messages from/to a remote OSC controller, which would only send/receive UDP datagrams.

Setup

$ npm install
$ npm link

Usage

$ osc-bridge [ --auto-ping ]

Configuration

OSC bridge server

Before starting the OSC bridge server, you might want to tweak its configuration; add following NPM environment variables in the config section of your package.json:

{
  …,
  "config": {
    "osc-bridge": {
      "udp-server": {
        "host": "0.0.0.0",
        "port": "7400"
      },
      "udp-client": {
        "host": "192.168.xxx.yyy",
        "port": "7500"
      },
      "ws-server": {
        "host": "0.0.0.0",
        "port": "8080"
      }
    }
  },
  "devDependencies": {
    "osc-bridge": "latest",
    …
  }
  …
}

See the package.json at the root of this monorepo for an example.

OSC remote controller

To send and receive OSC messages to/from the OSC bridge server, you will also need to configure your remote OSC controller app.

Use the IP address of the network adapter listed by the OSC bridge server upon start. For instance, if you get following output, your computer and the OSC bridge server will be reachable at IP 192.168.178.47:

$ npm run dev:osc

> @petitatelier/data-streams@ dev:osc …
> osc-bridge & npm run dev && fg

OSC Websocket <-> UDP bridge server
Bridging OSC over Web Socket to/from `ws://0.0.0.0:8080`
Listening for OSC over UDP on `0.0.0.0:7400`
Broadcasting OSC over UDP to `192.168.178.29:7500`
Local host reachable at: [ en0: `192.168.178.47` ]
…

If you were using the popular TouchOSC remote OSC controller app, you would consequently configure its Host and Port (outgoing) fields with IP 192.168.178.47 and port 7400, as shown in screencopy hereafter:

Back to your package.json, to forward OSC messages from the bridge server to the remote controller, you would adjust the udp-client.host field to the Local IP address 192.168.178.29 shown by TouchOSC; and the udp-client.port field to the value shown in the Port (incoming) field of TouchOSC:

{
  …
  "config": {
    "osc-bridge": {
      …
      "udp-client": {
          "host": "192.168.178.29",
          "port": "7500"
      }
      …
    …
  …
}