英文:
Ping an IP address or a host from .Net MAUI App
问题
我已创建了一个全新的 .net MAUI 应用程序（VS 2022 Community）。
我正在尝试从我的 MainPage 中ping一个IP地址。
我的代码：
IPAddress ipAddress = IPAddress.Parse(hostOrIp);
PingReply reply = await ping.SendPingAsync(ipAddress);
if (reply.Status == IPStatus.Success)
{
return true;
}
else
{
return false;
}
然而，上面的代码似乎根本不起作用，无论是在Android模拟器上还是在实际的Android设备上都不起作用。所需的权限已经处理好了。每次我都会收到一个"System.Net.NetworkInformation.IPStatus.TimedOut"的回复，即使是已知的IP地址如8.8.8.8。
可能的问题是什么？
英文:
I have created a brand new .net MAUI App (VS 2022 Community).
I am trying to ping an IP address from my MainPage.
My code:
IPAddress ipAddress = IPAddress.Parse(hostOrIp);
PingReply reply = await ping.SendPingAsync(ipAddress);
if (reply.Status == IPStatus.Success)
{
return true;
}
else
{
return false;
}
However, the code above does not seem to work at all, not on Android emulator not on a physical Android device either. The requisite permissions are already taken care of. I am getting a "System.Net.NetworkInformation.IPStatus.TimedOut" reply every time even to well known IP addresses like 8.8.8.8.
What could be the problem?
答案1
得分: 1
I ran the program on emulator using any other IP, it will be TimedOut as you said:
private async void Button_Clicked(object sender, EventArgs e)
{
try
{
Ping pingSender = new Ping();
PingReply reply = await pingSender.SendPingAsync("47.75.18.65");
if (reply.Status == IPStatus.Success)
{
//...
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
However, if I test it on a real device, it will be successful.
There is another way to achieve it when running the program on an emulator. You can make the ping by a Java Runtime command:
private async void Button_Clicked(object sender, EventArgs e)
{
#if ANDROID
Java.Lang.Process p1 = Java.Lang.Runtime.GetRuntime().Exec("ping -c 1 47.75.18.65");
int returnVal = p1.WaitFor();
#endif
}
returnVal is 1 indicating success, and here is the effect.
Wish these can help you.
英文:
I ran the program on emulator using any other IP, it will be TimedOut as you said:
private async void Button_Clicked(object sender, EventArgs e)
{
try
{
Ping pingSender = new Ping();
PingReply reply = await pingSender.SendPingAsync("47.75.18.65");
if (reply.Status == IPStatus.Success)
{
//...
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
However, if I test it on real device, it will be successful.
There is another way to achieve it when run the program on emulator. You can make the ping by a Java Runtime command:
private async void Button_Clicked(object sender, EventArgs e)
{
#if ANDROID
        Java.Lang.Process p1 = Java.Lang.Runtime.GetRuntime().Exec("ping -c 1 47.75.18.65");
        int returnVal = p1.WaitFor();
#endif
}
returnVal is 1 indicating success, and here is the effect.
Wish these can help you.
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