> 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/socketiostart.md).

# Socket.IO Start

## Overview

![The Socket.IO Start Node.](/files/MovPjYfrogx54EvveFD1)

The **Socket.IO Start Node** starts a **Socket.IO** connection that has already been set up in [**Project Settings**](/incari-studio/modules/project-settings/socketio.md).

**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 **Socket.IO Start** will not show up in the [**Toolbox**](/incari-studio/toolbox/overview.md). Please refer to the [**Plugins Editor**](/incari-studio/modules/plugins/communication/socketiomanager.md) to find out more information.

It is important to note that while the **Socket.IO Start Node** starts a **Socket.IO** connection, it may not completely finish establishing said connection when the **Node** is executed. This could lead to the **Logic** attached to its **Output Pulse** to not work even though there is technically nothing wrong. In order to avoid this, it is highly suggested to use the [**On Socket.IO Start Node**](/incari-studio/toolbox/communication/socketio/events/onsocketiostart.md) instead. This way, the **Logic** will only execute once the **Socket.IO** connection has definitely been established.

Again, the user must first use the **Socket.IO Start Node** to open the connection. Separately, the **On Socket.IO Start Node** can be used to execute the desired **Communication Logic**.

![Socket.IO Start and On Socket.IO Start Configuration](/files/HlzmPxiGKMagzeOwji1E)

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

## Attributes

![The Socket.IO Start Node Attributes.](/files/rvejd0O7kJ932vITbJmN)

| 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). |

## Inputs

| Input             | Type      | Description                                                           |
| ----------------- | --------- | --------------------------------------------------------------------- |
| *Pulse Input* (►) | **Pulse** | A standard **Input Pulse**, to trigger the execution of the **Node**. |

## 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 Start**](/incari-studio/toolbox/communication/socketio/events/onsocketiostart.md)
* [**Socket.IO Stop**](/incari-studio/toolbox/communication/socketio/socketiostop.md)