Creating a WebSocket Server

Let’s learn how to develop a WebSocket server with Go.

The WebSocket protocol

The WebSocket protocol is a computer communications protocol that provides full-duplex (transmission of data in two directions simultaneously) communication channels over a single TCP connection. The WebSocket protocol is defined in RFC 6455 and uses ws:// and wss:// instead of http:// and https://, respectively. Therefore, the client should begin a WebSocket connection by using a URL that starts with ws://.

In this lesson, we are going to develop a small yet fully functional WebSocket server using the gorilla/websocket module. The server implements the Echo service, which means that it automatically returns its input to the client.

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