在Unity中检查运行时的互联网连接

using UnityEngine;
using UnityEngine.Networking;

public class InternetConnectionChecker : MonoBehaviour
{
    void Start()
    {
        StartCoroutine(CheckInternetConnection());
    }

    IEnumerator CheckInternetConnection()
    {
        UnityWebRequest www = new UnityWebRequest("http://www.baidu.com");
        yield return www.SendWebRequest();

        if (www.isNetworkError || www.isHttpError)
        {
            Debug.Log("No internet connection");
        }
        else
        {
            Debug.Log("Internet connection available");
        }
    }
}