Gorilla WebSocket library: WebSocket library implemented in Go language

With the continuous development of Internet technology, network communication has become an indispensable and important part of people's daily life. As a new communication protocol, WebSocket has gradually received more and more attention and applications. In the process of implementing WebSocket communication, the Gorilla WebSocket library is a good choice.

Gorilla WebSocket library is a lightweight WebSocket library implemented in Go language. It provides a simple but powerful API to easily implement WebSocket communication. This library has the following features:

1. This library is compatible with the latest RFC 6455 WebSocket protocol.

2. Support network peer-to-peer communication and proxy communication.

3. Support WebSocket compression extension and custom extension.

4. Provides some powerful tools, such as parsing WebSocket requests and responses, generating random bytes, and using TLS for secure communication.

5. Support the use of WebSocket connections in different goroutines.

6. Provides extensive documentation and sample code for developers to use.

In practical applications, the use of Gorilla WebSocket library is very simple. The following code shows how to use this library to create a WebSocket server and client:

// Create a WebSocket server
func serveWebSocket(w http.ResponseWriter, r *http.Request) {

upgrader := websocket.Upgrader{}
conn, err := upgrader.Upgrade(w, r, nil)
if err != nil {
    log.Fatal("upgrade:", err)
    return
}
defer conn.Close()

for {
    // 读取WebSocket请求
    _, message, err := conn.ReadMessage()
    if err != nil {
        log.Println("read:", err)
        break
    }
    log.Printf("recv: %s", message)

    // 处理WebSocket响应
    err = conn.WriteMessage(websocket.TextMessage, []byte("Hello, world!"))
    if err != nil {
        log.Println("write:", err)
        break
    }
}

}

// Create WebSocket client
func main() {

addr := "ws://localhost:8080/ws"
conn, _, err := websocket.DefaultDialer.Dial(addr, nil)
if err != nil {
    log.Fatal("dial:", err)
}
defer conn.Close()

// 发送WebSocket请求
err = conn.WriteMessage(websocket.TextMessage, []byte("Hello, server!"))
if err != nil {
    log.Println("write:", err)
    return
}

// 读取WebSocket响应
_, message, err := conn.ReadMessage()
if err != nil {
    log.Println("read:", err)
    return
}
log.Printf("recv: %s", message)

}

In the above code example, the Upgrader structure is used to implement WebSocket connection upgrade, and then interacts with the WebSocket client by continuously reading and writing WebSocket messages.

Overall, the Gorilla WebSocket library is a very easy-to-use WebSocket library. It provides rich functions and powerful APIs that can help developers easily implement WebSocket communication. If you are looking for an efficient, stable and easy-to-use WebSocket library, then the Gorilla WebSocket library is an option worth trying.

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