> For the complete documentation index, see [llms.txt](https://lern.sunbird.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lern.sunbird.org/use/developer-guide/discussion-forum/developer-installation/installation-guide/discussion-middleware.md).

# Discussion Middleware

In Discussion forum middleware we have add the below configuration in `environmentHelper.js` file.

```
let localEnvVariables = {
    NODEBB_SERVICE_URL: env.nodebb_service_url || 'http://localhost:4567', 
    Authorization:  env.authorization_token || 'd8402b15-1d5f-4d84-9fae-595ef805f287', // Your local nodebb Master token
    nodebb_api_slug: env.nodebb_api_slug || '/api'
}
```

**NODEBB\_*****SERVICE\_*****URL** : This is your nodebb url by default local nodebb will run on port **4567.** and the url is[ ](http://localhost:4567)<http://localhost:4567>.

**Authorization:** This in nodebb authorization token (Write-api master token) and we have to send this token for all node apis.

**nodebb\_api\_slug:** All nodebb api should be prepend with `/api`


---

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