如何将可信来源添加到gorilla websocket的CheckOrigin？

package main

import (
    "log"
    "net/http"

    "github.com/gorilla/websocket"
)

// 定义一个允许的来源列表
var allowedOrigins = []string{
    "http://example.com",
    "https://anotherdomain.com",
}

// 自定义CheckOrigin函数
func checkOriginFunc(r *http.Request) bool {
    origin := r.Header.Get("Origin")
    for _, allowedOrigin := range allowedOrigins {
        if origin == allowedOrigin {
            return true
        }
    }
    return false
}

func main() {
    upgrader := websocket.Upgrader{
        CheckOrigin: checkOriginFunc, // 设置自定义的CheckOrigin函数
    }

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

        // 处理WebSocket连接...
    })

    log.Fatal(http.ListenAndServe(":8080", nil))
}