noxon-server

Noxon^TM has discontinued infrastructure services for legacy iRadio series devices. This is an unofficial server that keeps these old devices running. You finally get full control over your device and avoid e-waste.

Thanks goes to cweiske for providing the API documentation.

Tested Devices (see Server configuration):

• NOXON iRadio (without a number)
• NOXON iRadio 300

Quickstart (Docker)

Just run following command (set for HOST_IP the ip (v4) of your machine)

$ chmod 666 docker/presets.json && sudo HOST_IP=192.168.0.50 docker-compose -f docker/docker-compose.yaml up

iRatio device configuration

Now you have to point the iRadio to your noxon-server. This is done by enabling the static ip configuration on the iRadio and providing your machines ip (v4) as the primary DNS like so (keep for the secondary DNS the default 0.0.0.0):

Now if you browse the radio stations you should see those stations configured in docker/stations.json. If you save a preset on the radio it gets written to docker/presets.json

Quickstart (compile from source/pre-built binaries)

Compile the code for your desired os and architecture or download the ready to use binaries from here:

$ GOOS=linux GOARCH=amd64 go build -a -tags netgo -ldflags '-w -extldflags "-static"' -o noxon-server cmd/main.go

Then copy the stations.json from the docker folder and start the application (set for DNS_HOST_IP the ip (v4) of your machine)

$ cp docker/stations.json ./
$ sudo DNS_ENABLED=true DNS_HOST_IP=192.168.0.50 GIN_MODE=release ./noxon-server

The configuration of the radio is the same as above

Raspberry Pi

To compile for Raspberry Pi just use those go Env. vars.: GOOS=linux GOARCH=arm GOARM=5

How it works

Tested against NOXON iRadio 300, German edition

The noxon-server launches a minimal DNS server on port 53/udp und a http server on port 80/tcp (make sure your firewall allows traffic to this port). This are privileged ports (the TCP/IP port numbers below 1024) that's why you need admin rights to run this server. There is no way around this because we can't set a specific port for the DNS lookup on the radio device - it always uses the default 53/udp port.

At first the iRadio device contacts the DNS server and asks for an record for the domain legacy.noxonserver.eu. The DNS server answers with its own ip (see dns.hostIp in the config file or the environment variable DNS_HOST_IP). If you select "Internetradio" on the display the device asks for the stations via the endpoint /setupapp/fs/asp/BrowseXML/loginXML.asp and the noxon-server serves them from the stations.json file. If a station is selected for playback on the device a search is first done via /setupapp/fs/asp/BrowseXML/Search.asp and the server returns the single station item but with a modified stationUrl pointing to the /playback endpoint. A reverse proxy then serves the mp3 stream to the device. You heared right, the device does not connect to the original server (as stated in stations.json) of the mp3 stream but to the endpoint /playback of the noxon-server which acts as a reverse proxy. This decision was made because I could not make it work otherwise - more research is needed. But this also has advantages because you could include e.g. m3u support and more advanced audio codecs which are not supported by iRadio devices.

If a preset button is pressed for 3 seconds on the device a DNS request is made for the domain gate1.noxonserver.eu or gate2.noxonserver.eu. The DNS server answers with its own ip again. The radio calls the preset endpoint /Favorites/AddPreset.aspx of the noxon-server which creates a presets.json file (if not present) and a new entry in the file. If a preset button is pressed briefly the device requests a preset from /Favorites/GetPreset.aspx which is served from the presets.json file and the playback starts again.

All the mentioned endpoints and domains are device specific and may need to be changed in Server configuration

Server configuration

The configuration is read form a config.toml file. By default the noxon-server expects to find the config file in the cwd but you can overwrite the path by setting the Env. variable CONFIG_FILE. You can also do without the config file and configure the server only by setting the environment variables.

The different NOXON iRadio devices may expect different endpoints and domains (probably depending on country of marketing, revision and other criteria). You may have to change those endpoints via the configuration (see endpoints group and dns.records) - use Wireshark to find them.

Blacklist/Whitelist

You can blacklist, whitelist iRadio devices. You just have to get the hashed (and salted) Mac address of the iRadio device first. The easiest way to do is to observe the noxon-server logs and look for log messages while the device connects. You should find some log entries that contain the device info e.g.: device="{b8f629d7e3480b61abdf48c7ba796dae 79 10143 Terratec ger}. The first 32 character long hex string (here b8f629d7e3480b61abdf48c7ba796dae) is the hashed Mac that you are looking for.

Stations list (stations.json)

You can create the station list according to your wishes but you must restart noxon-server if you made changes. Here are two examples:

A flat list of radio stations:

[
  {
    "stationName": "HR info",
    "stationDescription": "HR info",
    "stationUrl": "https://dispatcher.rndfnk.com/hr/hrinfo/live/mp3/high"
  },
  {
    "stationName": "HR 2",
    "stationDescription": "HR 2",
    "stationUrl": "https://dispatcher.rndfnk.com/hr/hr2/live/mp3/high"
  }
]

A structured station list with nested folders:

[
  {
    "dirName": "Hessischer Rundfunk",
    "children": [
      {
        "stationName": "HR info",
        "stationDescription": "HR info",
        "stationUrl": "https://dispatcher.rndfnk.com/hr/hrinfo/live/mp3/high"
      },
      {
        "stationName": "HR 2",
        "stationDescription": "HR 2",
        "stationUrl": "https://dispatcher.rndfnk.com/hr/hr2/live/mp3/high"
      }
    ]
  },
  {
    "dirName": "Root folder",
    "children": [
      {
        "dirName": "Nested folder",
        "children": [
          {
            "dirName": "Empty folder",
            "children": []
          }
        ]
      }
    ]
  }
]

Known Endpoints and Domains

Different Noxon iRadio devices expect different endpoints and domains this server has to provide and resolve

NOXON iRadio 300

NOXON iRadio (withouth a number)