解决方案

Question

我正在将我们的游戏移植到Unity，并需要一些有关Unity中互联网连接检查的帮助。官方Unity文档说'不要使用Application.internetReachability。所以我很困惑哪些代码可以在这里工作。在任何论坛中都找不到任何突出的解决方案。我想检查Wi-Fi或GPRS是否开启哪个应该适用于iOS和Android。提前谢谢。

Answer 1

解决方案

Application.internetReachability就是您所需要的。可能与Ping结合使用。

以下是一个例子：

using UnityEngine;

public class InternetChecker : MonoBehaviour
{
    private const bool allowCarrierDataNetwork = false;
    private const string pingAddress = "8.8.8.8"; // Google Public DNS server
    private const float waitingTime = 2.0f;

    private Ping ping;
    private float pingStartTime;

    public void Start()
    {
        bool internetPossiblyAvailable;
        switch (Application.internetReachability)
        {
            case NetworkReachability.ReachableViaLocalAreaNetwork:
                internetPossiblyAvailable = true;
                break;
            case NetworkReachability.ReachableViaCarrierDataNetwork:
                internetPossiblyAvailable = allowCarrierDataNetwork;
                break;
            default:
                internetPossiblyAvailable = false;
                break;
        }
        if (!internetPossiblyAvailable)
        {
            InternetIsNotAvailable();
            return;
        }
        ping = new Ping(pingAddress);
        pingStartTime = Time.time;
    }

    public void Update()
    {
        if (ping != null)
        {
            bool stopCheck = true;
            if (ping.isDone)
            {
                if (ping.time >= 0)
                    InternetAvailable();
                else
                    InternetIsNotAvailable();
            }
            else if (Time.time - pingStartTime < waitingTime)
                stopCheck = false;
            else
                InternetIsNotAvailable();
            if (stopCheck)
                ping = null;
        }
    }

    private void InternetIsNotAvailable()
    {
        Debug.Log("No Internet :(");
    }

    private void InternetAvailable()
    {
        Debug.Log("Internet is available! ;)");
    }
}

注意事项

Unity的ping不执行任何域名解析，即它只接受IP地址。因此，如果某些播放器具有Internet访问权限但存在DNS问题，则该方法会说他有Internet。
这只是一次ping检查。不要指望它是100％准确的。在极少数情况下，它会向您提供虚假信息。

Answer 2

我所做的是Network.TestConnection测试连接性，无论它是否可以是服务器，以及是否可以成功使用NAT穿通。

这是他们给我们的示例代码。如果结果为ConnectionTesterStatus.Error，则可能无法访问互联网。

var testStatus = "Testing network connection capabilities.";
var testMessage = "Test in progress";
var shouldEnableNatMessage : String = "";
var doneTesting = false;
var probingPublicIP = false;
var serverPort = 9999;
var connectionTestResult = ConnectionTesterStatus.Undetermined;

// Indicates if the useNat parameter be enabled when starting a server
var useNat = false;

function OnGUI() {
    GUILayout.Label("Current Status: " + testStatus);
    GUILayout.Label("Test result : " + testMessage);
    GUILayout.Label(shouldEnableNatMessage);
    if (!doneTesting)
        TestConnection();
}

function TestConnection() {
    // Start/Poll the connection test, report the results in a label and 
    // react to the results accordingly
    connectionTestResult = Network.TestConnection();
    switch (connectionTestResult) {
        case ConnectionTesterStatus.Error: 
            testMessage = "Problem determining NAT capabilities";
            doneTesting = true;
            break;

        case ConnectionTesterStatus.Undetermined: 
            testMessage = "Undetermined NAT capabilities";
            doneTesting = false;
            break;

        case ConnectionTesterStatus.PublicIPIsConnectable:
            testMessage = "Directly connectable public IP address.";
            useNat = false;
            doneTesting = true;
            break;

        // This case is a bit special as we now need to check if we can 
        // circumvent the blocking by using NAT punchthrough
        case ConnectionTesterStatus.PublicIPPortBlocked:
            testMessage = "Non-connectable public IP address (port " +
                serverPort +" blocked), running a server is impossible.";
            useNat = false;
            // If no NAT punchthrough test has been performed on this public 
            // IP, force a test
            if (!probingPublicIP) {
                connectionTestResult = Network.TestConnectionNAT();
                probingPublicIP = true;
                testStatus = "Testing if blocked public IP can be circumvented";
                timer = Time.time + 10;
            }
            // NAT punchthrough test was performed but we still get blocked
            else if (Time.time > timer) {
                probingPublicIP = false;        // reset
                useNat = true;
                doneTesting = true;
            }
            break;
        case ConnectionTesterStatus.PublicIPNoServerStarted:
            testMessage = "Public IP address but server not initialized, "+
                "it must be started to check server accessibility. Restart "+
                "connection test when ready.";
            break;

        case ConnectionTesterStatus.LimitedNATPunchthroughPortRestricted:
            testMessage = "Limited NAT punchthrough capabilities. Cannot "+
                "connect to all types of NAT servers. Running a server "+
                "is ill advised as not everyone can connect.";
            useNat = true;
            doneTesting = true;
            break;

        case ConnectionTesterStatus.LimitedNATPunchthroughSymmetric:
            testMessage = "Limited NAT punchthrough capabilities. Cannot "+
                "connect to all types of NAT servers. Running a server "+
                "is ill advised as not everyone can connect.";
            useNat = true;
            doneTesting = true;
            break;

        case ConnectionTesterStatus.NATpunchthroughAddressRestrictedCone:
        case ConnectionTesterStatus.NATpunchthroughFullCone:
            testMessage = "NAT punchthrough capable. Can connect to all "+
                "servers and receive connections from all clients. Enabling "+
                "NAT punchthrough functionality.";
            useNat = true;
            doneTesting = true;
            break;

        default: 
            testMessage = "Error in test routine, got " + connectionTestResult;
    }
    if (doneTesting) {
        if (useNat)
            shouldEnableNatMessage = "When starting a server the NAT "+
                "punchthrough feature should be enabled (useNat parameter)";
        else
            shouldEnableNatMessage = "NAT punchthrough not needed";
        testStatus = "Done testing";
    }
}

Answer 3

这是一个我已经用于互联网检查的简单解决方案。它适用于IOS和Android。我知道它可能需要改进，但现在是：

public static bool InternetStatus ()
{
    if (Application.internetReachability != NetworkReachability.NotReachable)
    {
        return true;
    }else{
        return false;
    }
}

Unity检查互联网连接可用性

3 个答案:

解决方案

注意事项