# TCP

## Introduction

The **TCP** **Nodes** provide a means for the user to perform several actions within the *TCP* communications protocol. *TCP*, or Transmission Control Protocol, is part of the Internet protocol suite and allows for bidirectional communication between a server and a client. To use the **TCP Nodes** in **Incari**, the user needs to locate the [**TCP Attributes**](https://docs.incari.com/incari-studio/modules/project-settings/tcp-connection) in **Project Settings** and add a `Connection`.

This form of **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 render the **TCP Nodes** unavailable. Please refer to the [**Plugins Editor**](https://docs.incari.com/incari-studio/modules/plugins/communication/tcpconnectionsmanager) to find out more information.

## TCP Guideline

These are the guidelines for incorporating **TCP Communication** into a **Project**.

* To properly start a connection, see the [**General Guideline**](https://docs.incari.com/incari-studio/toolbox/communication/..#general-guideline) on the Communication Introduction page.
* Once the connection has been established, there are several **Nodes** that cover important functions of **TCP Communication**.
  * [**TCP Send**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/tcpsend) sends a `Message` through the established connection to the *TCP* endpoint.
  * [**On TCP Packet Receive**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/events/ontcppacketreceive) executes once a **TCP** `Message` is received.
* To properly stop a connection, see the [**General Guideline**](https://docs.incari.com/incari-studio/toolbox/communication/..#general-guideline) on the Communications Introduction page.

## Contents

* [**Events**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/events)
  * [**On TCP Error**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/events/ontcperror)
  * [**On TCP Packet Receive**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/events/ontcppacketreceive)
  * [**On TCP Start**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/events/ontcpstart)
  * [**On TCP Stop**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/events/ontcpstop)
* [**TCP Send**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/tcpsend)
* [**TCP Start**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/tcpstart)
* [**TCP Stop**](https://docs.incari.com/incari-studio/toolbox/communication/tcp/tcpstop)