Configure channel in any language app

Javonet allows you to reference and use modules or packages written in (Java/Kotlin/Groovy/Clojure, C#/VB.NET, Ruby, Perl, Python, JavaScript/TypeScript) like they were created in your technology. If you have not yet created your first project, check Javonet overview and quick start guides for your technology. Javonet enables configuring the communication channel with foreign runtimes via a configuration file. Each runtime section (jvm, netcore, nodejs, python, ruby, clr, perl) can be configured independently with one of the supported channel types:

• In-Memory Channel – high-performance, within-process communication
• TCP Channel – for inter-process or remote communication over TCP
• WebSocket Channel – ideal for browser-based or cross-platform communication

Example configuration file with all three channel types:

{
  "licenseKey": "your-license-key",
  "runtimes": {
    "jvm": [
      {
        "name": "default",
        "customOptions": "",
        "modules": "",
        "channel": {
          "type": "inMemory"
        }
      }
    ],
    "netcore": [
      {
        "name": "default",
        "customOptions": "",
        "modules": "",
        "channel": {
          "type": "tcp",
          "host": "127.0.0.1",
          "port": 8080
        }
      }
    ],
    "nodejs": {
      "name": "default",
      "customOptions": "",
      "modules": "",
      "channel": {
        "type": "webSocket",
        "host": "wss://127.0.0.1:443/ws",
        "port": 0
      }
    }
  }
}

To use this file, load it using:

You can configure the communication channel in any language app in many different ways using Javonet.withConfig(...). Instead of providing only a configuration file path, you can also pass:

• any language object – representing the configuration structure directly in code
• JSON string – containing the configuration as a raw JSON-formatted string

This flexibility allows seamless integration regardless of your runtime environment. You can use configuration from a file, a any language object, or a JSON string depending on your use case. Below you can see a code example demonstrating how to load configuration from any language object source.