??

? ????? ??? WebSocket ??????? ??? ??? ???????. Gin ? Go? ???? ??? ???? WebSocket ??? ????? ????, ???? ????, ??? ?? ?????? ????? ?????????.

???? ??

https://github.com/tom-takeru/web-socket-demo

? ??? ????? ???? ????? ????? ???????. ??? ????? ???? ?????:

./backend
├── go.mod
├── go.sum
├── main.go
└── stores
    └── messages.go

?? ???? ? ??

• go.mod: ?? ???? ??? ?????.
• main.go: WebSocket ??? ????? ??? ???? ??????? ??????.
• stores/messages.go: ?????? ??? ???? ??? ???? ?????.

?? ?? ??: main.go

main.go? WebSocket ?? ??????? ?? ??????. Gin ???? ???? WebSocket ??? ???? WebSocket ?? ??? ?????.

?? ??

package main

import (
    "encoding/json"
    "net/http"
    "sync"
    "time"

    "github.com/gin-gonic/gin"
    "github.com/gorilla/websocket"

    "github.com/tom-takeru/web-socket-demo/backend/stores"
)

var (
    upgrader = websocket.Upgrader{
        CheckOrigin: func(r *http.Request) bool {
            origin := r.Header.Get("Origin")
            // NOTE: This project is for local development only.
            return origin == "http://localhost:3000"
        },
    }
    messageStore = stores.NewMessageStore()
    clients      = make(map[*websocket.Conn]bool)
    clientsMu    sync.Mutex
)

func handleWebSocket(c *gin.Context) {
    conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
    if err != nil {
        c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to upgrade to WebSocket"})
        return
    }
    defer conn.Close()

    clientsMu.Lock()
    clients[conn] = true
    clientsMu.Unlock()

    // Send existing messages to the new connection
    for _, msg := range messageStore.MarshalMessages() {
        conn.WriteMessage(websocket.TextMessage, msg)
    }

    for {
        _, message, err := conn.ReadMessage()
        if err != nil {
            break
        }

        var msgData map[string]string
        if err := json.Unmarshal(message, &msgData); err != nil {
            break
        }

        timestamp := time.Now().Format(time.RFC3339)
        msgData["timestamp"] = timestamp

        messageStore.AddMessage(msgData)

        modifiedMessage, err := json.Marshal(msgData)
        if err != nil {
            break
        }

        clientsMu.Lock()
        for client := range clients {
            if err := client.WriteMessage(websocket.TextMessage, modifiedMessage); err != nil {
                client.Close()
                delete(clients, client)
            }
        }
        clientsMu.Unlock()
    }

    clientsMu.Lock()
    delete(clients, conn)
    clientsMu.Unlock()
}

func main() {
    r := gin.Default()
    r.GET("/ws", handleWebSocket)
    r.Run("localhost:8080")
}

?? ??

1. ?? ??: ??? ?????? ???? ???? ???? ?????? ??? ???? ?????.
2. WebSocket ?? ??: ?? ??, ??? ?????? ? ?? ?? ??? ?????.

??

WebSocket ?? ??????? ??? ????? Gin ? Go? ???? ??? ??? ????? ???? ??? ?????. ???? ??? ?????? ??? ??? ???? ?? WebSocket? ?????? ? ??????? ??? ? ?????? ??? ?? ??? ?? ??? ???.

?? ???? ?? ??? WebSocket ?? ???? ?? ???????.

??? ??

• WebSocket? ??? ??? ? ?????? ?? - ??
• WebSocket? ??? ??? ? ?????? ?? - ?????

? ??? WebSocket? ??? ??? ? ?????? ?? - ???? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!