### Update Protobuf Definitions

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/README.md

Instructions for updating protobuf definitions, including installing protoc and protoc_plugin, and running the protoc command.

```bash
protoc --dart_out=. -I . client.proto
```

```bash
dartfmt -w lib/ test/
```

--------------------------------

### Run Tests Locally

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/README.md

Commands to start the test Centrifugo server using Docker and run local tests with Dart.

```bash
docker compose up
```

```bash
dart run test --reporter expanded
```

--------------------------------

### Centrifugo Configuration Example

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/flutter_app/README.md

This JSON configuration is for the Centrifugo server. Ensure you create a 'chat' namespace with appropriate permissions for publishing, joining, leaving, and presence.

```json
{
  "...": "",
  "allowed_origins": ["http://localhost:8000"],
  "namespaces": [
    {
      "name": "chat",
      "anonymous": false,
      "publish": true,
      "join_leave": true,
      "presence": true,
      "presence_stats": true,
	    "allow_publish_for_subscriber": true,
      "allow_subscribe_for_client": true
    }
  ]
}
```

--------------------------------

### Run Centrifugo with Admin Option

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/console/readme.md

Start the Centrifugo server with the `--admin` flag enabled. This allows you to use the admin interface to send messages to connected clients, useful for testing.

```bash
centrifugo --admin
```

--------------------------------

### Running Centrifugo in Insecure Client Mode

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/flutter_app/README.md

This command starts the Centrifugo server with a specified configuration file, enabling insecure client mode for easier testing and development. The `--admin` flag provides access to the admin interface.

```bash
./centrifugo --config config.json --client_insecure --admin
```

--------------------------------

### Run Centrifugo in Insecure Client Mode

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/console/readme.md

For testing purposes, run Centrifugo with both `--client_insecure` and `--admin` flags. This bypasses JWT token validation, simplifying initial setup and testing.

```bash
centrifugo --client_insecure --admin
```

--------------------------------

### Centrifugo Configuration for Chat Namespace

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/console/readme.md

This JSON configuration enables a 'chat' namespace in Centrifugo, allowing anonymous subscriptions, publishing, and presence features. Ensure your Centrifugo server uses this or a similar configuration for the chat example to function correctly.

```json
{
  "token_hmac_secret_key": "9c4a1a64-7479-4c2c-9895-14b0676c71d8",
  "admin_password": "a15cfff3-b7b7-4261-87ad-c6825c0400b5",
  "admin_secret": "3aaead2e-2d3d-48cb-b330-c54c44b4eac0",
  "api_key": "cb0f41cd-5954-443d-8628-a4453592443c",
  "allowed_origins": ["http://localhost:8000"],
  "namespaces": [
    {
      "name": "chat",
      "anonymous": false,
      "publish": true,
      "join_leave": true,
      "presence": true,
      "presence_stats": true,
      "allow_publish_for_subscriber": true,
      "allow_subscribe_for_client": true
    }
  ]
}
```

--------------------------------

### Generate Subscription JWT Token

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/console/readme.md

Use this command to generate a JWT token for subscribing to the 'chat:index' channel for a user named 'dart'. This token grants the client permission to subscribe to specific channels.

```bash
centrifugo gensubtoken --user dart --channel chat:index
```

--------------------------------

### Run Flutter App on Chrome with Specific Port

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/chat_app/README.md

Launch the Flutter chat application on the Chrome browser, specifying a web port. Ensure this port is whitelisted in your Centrifugo `config.json`.

```bash
flutter run -d chrome --web-port 3000
```

--------------------------------

### Generate User JWT Token

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/console/readme.md

Use this command to generate a JWT token for a user named 'dart'. This token is required for the client to authenticate with the Centrifugo server.

```bash
centrifugo gentoken --user dart
```

--------------------------------

### Publish Message via Centrifugo Admin Interface

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/console/readme.md

Send a message to the 'chat:index' channel using the Centrifugo admin interface. This demonstrates how to publish data to clients connected to a specific channel.

```json
{
  "message": "hello world",
  "username": "admin"
}
```

--------------------------------

### Register Service Worker in Chat App

Source: https://github.com/centrifugal/centrifuge-dart/blob/master/example/chat_app/web/index.html

This code registers the 'flutter_service_worker.js' when the window loads. Ensure the service worker file is correctly placed in the root directory.

```javascript
if ('serviceWorker' in navigator) {
  window.addEventListener('load', function () {
    navigator.serviceWorker.register('flutter_service_worker.js');
  });
}
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.