golang WebSocket ライブラリの推奨: リアルタイム通信システムを迅速に構築する

package main

import (
    "log"
    "net/http"

    "github.com/gorilla/websocket"
)

var upgrader = websocket.Upgrader{
    CheckOrigin: func(r *http.Request) bool {
        return true
    },
}

func echo(w http.ResponseWriter, r *http.Request) {
    conn, err := upgrader.Upgrade(w, r, nil)
    if err != nil {
        log.Println(err)
        return
    }
    defer conn.Close()

    for {
        messageType, message, err := conn.ReadMessage()
        if err != nil {
            log.Println(err)
            return
        }

        log.Println("Received message:", string(message))

        err = conn.WriteMessage(messageType, message)
        if err != nil {
            log.Println(err)
            return
        }
    }
}

func main() {
    http.HandleFunc("/", echo)
    log.Fatal(http.ListenAndServe(":8080", nil))
}

package main

import (
    "fmt"
    "net/http"
    "time"

    "nhooyr.io/websocket"
    "nhooyr.io/websocket/wsjson"
)

func echo(w http.ResponseWriter, r *http.Request) {
    conn, err := websocket.Accept(w, r, nil)
    if err != nil {
        http.Error(w, "Could not open websocket connection", http.StatusBadRequest)
        return
    }

    defer conn.Close(websocket.StatusInternalError, "Internal Server Error")

    ctx := r.Context()

    for {
        var message string

        err := wsjson.Read(ctx, conn, &message)
        if err != nil {
            fmt.Println("Read error:", err)
            return
        }

        fmt.Println("Received message:", message)

        err = wsjson.Write(ctx, conn, message)
        if err != nil {
            fmt.Println("Write error:", err)
            return
        }
    }
}

func main() {
    http.HandleFunc("/", echo)

    err := http.ListenAndServe(":8080", nil)
    if err != nil {
        fmt.Println("ListenAndServe error:", err)
        return
    }
}