String conversion error: Illegal byte sequence encounted

On one of my devs pcs we get the following error when trying to play in the editor:


ExecutionEngineException: String conversion error: Illegal byte sequence encounted in the input.
System.Net.Dns.GetHostByName (System.String hostName) (at <14e3453b740b4bd690e8d4e5a013a715>:0)
System.Net.Dns.GetHostEntry (System.String hostNameOrAddress) (at <14e3453b740b4bd690e8d4e5a013a715>:0)
av.Utils.GetLocalIPAddress () (at Assets/Scripts/AV/Utils.cs:145)
av.AV.UpdateDeviceInfo () (at Assets/Scripts/AV/AV.cs:1028)
av.SystemDialog.Show (System.Boolean debug) (at Assets/Scripts/AV/_dialog.cs:385)
av.AV.Start () (at Assets/Scripts/AV/AV.cs:1122)

We are trying to run this on 2019.4.7f1 and it runs fine on other machines. Google doesn't have many answers on this. Anyone have a clue?

 

What does your code look like?

Maybe it's expecting only IPv4 addresses (which are only numerical) and it's encountering an IPV6 address on your friend's PC?

 

Code (CSharp):

1.  public static string GetLocalIPAddress() {
2.             var host = Dns.GetHostEntry(Dns.GetHostName());
3.             foreach (var ip in host.AddressList) {
4.                 if (ip.AddressFamily == AddressFamily.InterNetwork) {
5.                     return ip.ToString();
6.                 }
7.             }
8.             return null;
9.         }

Dns is the static system.net.dns class

 

Have you tried printing out the value of

Dns.GetHostName()

? What does it print on a working machine? What does it print on your friend's machine where it's not working?

 

it prints 'PC' on my machine and it prints 'HautVoltage' on my friends machine.

 

Hello.
The same thing happened to me. On same version Unity.
I think it was because I used double-byte characters in the computer name.
I have not verified whether it is due to the version of unity, but how about it?

 

I had such a problem when integrating firebase. There were non-Latin literals on the way to the project. Changed the path. If you have the same problem as me, then Google swears.VersionHandler.

 

This was the first thing that popped up on google when searching for the error, so I'm posting the solution I found somewhere else.

Instead of using Dns.GetHostAddresses(Dns.GetHostName()) to find the local IP address you can use NetworkInterface from System.Net.NetworkInformation.

Code (CSharp):

1. foreach (var networkInterface in NetworkInterface.GetAllNetworkInterfaces())
2.     {
3.     if (networkInterface.OperationalStatus == OperationalStatus.Up &&
4.         (networkInterface.NetworkInterfaceType == NetworkInterfaceType.Ethernet ||
5.          networkInterface.NetworkInterfaceType == NetworkInterfaceType.Wireless80211))
6.         {
7.         foreach (var ip in networkInterface.GetIPProperties().UnicastAddresses)
8.             {
9.             if (ip.Address.AddressFamily == AddressFamily.InterNetwork)
10.                 {
11.                 return ip.Address.ToString();
12.                 }
13.             }
14.         }
15.     }