> For the complete documentation index, see [llms.txt](https://docs.incari.com/incari-studio/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.incari.com/incari-studio/toolbox/communication/socketio/events/onsocketiostart.md).

# On Socket.IO Start

## Overview

![The On Socket.IO Start Node.](/files/vg8fi4XMqi1kZUmAkUy6)

**On Socket.IO Start** is an **Event Listener Node** notifying that the **Socket.IO** connection was successfully established, therefore enabling the user to trigger a **Logic Branch** on said connection to the *Socket.IO* server.

**Socket.IO Communication** in **Incari** is available as a plugin and is enabled as default. However, in the case that it is disabled in the **Plugins Editor**, it will not appear in the **Project Settings** and **On Socket.IO Start** will not show up in the [**Toolbox**](https://github.com/cgi-studio-gmbh/incari-doc/blob/2025.1/toolbox/communication/overview.md). Please refer to the [**Plugins Editor**](/incari-studio/modules/plugins/communication/socketiomanager.md) to find out more information.

[**Scope**](https://github.com/cgi-studio-gmbh/incari-doc/blob/2025.1/toolbox/communication/overview.md#scopes): **Project**, **Scene**.

## Attributes

![The On Socket.IO Start Node Attributes.](/files/poFzdKvJkr0vYvZZIHVq)

| Attribute       | Type          | Description                                                                                                                                                                    |
| --------------- | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `Configuration` | **Drop-Down** | The desired *Socket.IO* server, which refers back to the selections made under *Socket.IO* in the [**Project Settings**](/incari-studio/modules/project-settings/socketio.md). |

## Outputs

| Output             | Type      | Description                                                                                                                            |
| ------------------ | --------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| *Pulse Output* (►) | **Pulse** | A standard **Output Pulse**, to move onto the next **Node** along the **Logic Branch**, once this **Node** has finished its execution. |

## See Also

* [**On Socket.IO Stop**](/incari-studio/toolbox/communication/socketio/events/onsocketiostop.md)