Web Socket Protocol with full duplex communication using ESP8266 wifi server esp8266

Описание: #esp8266
#websocket
Download Code: https://github.com/yashwantpathakrjit...
Download Libraries: https://github.com/yashwantpathakrjit...
WebSockets provide a full-duplex communication channel over a single, long-lived connection, enabling bidirectional communication between a client and a server. Unlike traditional HTTP, which is based on a request-response model, WebSockets allow both the client and server to send messages independently.

*ESP8266 WiFi Module:*
The ESP8266 is a popular Wi-Fi module that is commonly used in IoT (Internet of Things) projects. It can be programmed using the Arduino IDE, making it accessible to a wide range of developers.

*Setting up WebSockets with ESP8266:*

1. *Libraries:*
The `WebSockets` library is used to implement WebSocket communication on the ESP8266. This library simplifies the process of handling WebSocket connections.

2. *WiFi Connection:*
The ESP8266 needs to connect to a Wi-Fi network to communicate with other devices on the network. The `ESP8266WiFi` library is used to manage Wi-Fi connections.

3. *WebSocket Server:*
A WebSocket server needs to be set up on the ESP8266. This server listens for WebSocket connections and handles incoming messages. The `WebSocketsServer` class is used for this purpose.

4. *Callback Functions:*
Callback functions are defined to handle different WebSocket events. These events include connection established (`WStype_CONNECTED`), disconnection (`WStype_DISCONNECTED`), and receiving text messages (`WStype_TEXT`).

5. *Handling Events:*
Inside the `webSocketEvent` function, switch statements are used to handle different WebSocket events. For example, when a client connects, disconnects, or sends a text message, the corresponding code is executed.

*Overall Flow:*
1. The ESP8266 connects to the Wi-Fi network.
2. It sets up a WebSocket server.
3. The server listens for incoming WebSocket connections.
4. When a connection is established, the `webSocketEvent` function is triggered.
5. The function handles different WebSocket events based on the event type.
6. For example, when a text message is received (`WStype_TEXT`), the server can process the message and take appropriate actions.

This setup enables real-time communication between the ESP8266 and other WebSocket-enabled devices on the network. Messages can be sent and received asynchronously, allowing for efficient and responsive communication in IoT applications. #nodemcu
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