feat: 实现网关服务的长连接功能

backend/gateway/internal/router/router.go

@@ -0,0 +1,62 @@
+package router
+
+import (
+	"log"
+	"net/http"
+
+	"backend/gateway/internal/ws"
+
+	"github.com/gorilla/websocket"
+)
+
+var upgrader = websocket.Upgrader{
+	ReadBufferSize:  1024,
+	WriteBufferSize: 1024,
+	// 允许所有来源的请求
+	CheckOrigin: func(r *http.Request) bool {
+		return true
+	},
+}
+
+type Router struct {
+	hub *ws.Hub
+}
+
+func NewRouter(hub *ws.Hub) *Router {
+	return &Router{
+		hub: hub,
+	}
+}
+
+func (r *Router) SetupRoutes() http.Handler {
+	mux := http.NewServeMux()
+
+	// WebSocket 连接处理
+	mux.HandleFunc("/ws", r.handleWebSocket)
+
+	// 健康检查
+	mux.HandleFunc("/health", r.handleHealth)
+
+	return mux
+}
+
+func (r *Router) handleWebSocket(w http.ResponseWriter, req *http.Request) {
+	conn, err := upgrader.Upgrade(w, req, nil)
+	if err != nil {
+		log.Println(err)
+		return
+	}
+
+	client := ws.NewClient(r.hub, conn)
+	r.hub.register <- client
+
+	// 启动客户端的读写协程
+	go client.writePump()
+	go client.readPump()
+}
+
+func (r *Router) handleHealth(w http.ResponseWriter, req *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(`{"status": "ok"}`))
+}