Can't use System.Security.Cryptography.X509Certificates / System.Net.Sockets.TcpClient for WSA

Hello,

I'm porting my current project to WSA. I got these errors below on build.

Assets\Script.cs(2,36): error CS0234: The type or namespace name 'X509Certificates' does not exist in the namespace 'System.Security.Cryptography' (are you missing an assembly reference?)
Assets\Script.cs(6,5): error CS0246: The type or namespace name 'X509Certificate' could not be found (are you missing a using directive or an assembly reference?)
Error building Player because scripts had compiler errors​

The Script.cs is as follows:

using System.Collections;
using System.Security.Cryptography.X509Certificates;

public class Script
{
X509Certificate obj;
}​

The error occurs only on build to Windows Store App. This code works fine for iOS, Android, Windows, etc.
How can I build codes using System.Security.Cryptography.X509Certificates for Window Store App?

thanks,
Daisuke

 

I see. I reviewed https://github.com/dotnet/corefx and System.Security.Cryptography.X509Certificates couldn't be found. Thank you for the response.

That goes as well as System.Net.Sockets.TcpClient?
The following code including TcpClient shows similar error:

using System.Collections;
using System.Net.Sockets;

public class Script
{
TcpClient tcpClient;
}

Error:
Assets\Script.cs(6,5): error CS0246: The type or namespace name 'TcpClient' could not be found (are you missing a using directive or an assembly reference?)​

However, I found .NET Core had TcpClient: https://github.com/dotnet/corefx/bl...t.Sockets/src/System/Net/Sockets/TCPClient.cs

thanks,
Daisuke

 

I found .NET Core has X509Certificate too.
.NET Core API reference has System.Security.Cryptography.X509Certificates as follows:

Class X509Certificate
http://dotnet.github.io/api/System.Security.Cryptography.X509Certificates.X509Certificate.html

Source at GitHub: https://github.com/dotnet/corefx/bl...aphy/X509Certificates/X509Certificate.cs/#L17​

Also found TcpClient in referece:

Class TcpClient
http://dotnet.github.io/api/System.Net.Sockets.TcpClient.html#System_Net_Sockets_TcpClient​

Does Unity use different version of .NET Core than what I found?

thanks,
Daisuke

 

It sounds that switching SDK to "Universal 10" solve the problem. However, It always fails to build with those errors whichever SDK selected.

 

I may have to re-define the problem.

[PROBLEM]
Build to Windows Store App fails with errors when I use System.Security.Cryptography.X509Certificates / System.Net.Sockets.TcpClient.

[ERROR]

• Assets\Script.cs(2,36): error CS0234: The type or namespace name 'X509Certificates' does not exist in the namespace 'System.Security.Cryptography' (are you missing an assembly reference?)
• Assets\Script.cs(7,5): error CS0246: The type or namespace name 'X509Certificate' could not be found (are you missing a using directive or an assembly reference?)
• Assets\Script.cs(8,5): error CS0246: The type or namespace name 'TcpClient' could not be found (are you missing a using directive or an assembly reference?)

[NOTES]
I can build the project for Windows, Mac, Android, iOS, etc. It fails only when target is WSA.
Unity uses .NET Core for WSA which has both X509Certificate and TcpClient.
Switching SDK version (Universal 10, Universal 8.1, Phone 8.1, 8.1) does not solve the problem.

[REPRO]
Add this code to your project, switch target platform to WSA, and build.

using System.Collections;
using System.Security.Cryptography.X509Certificates;
using System.Net.Sockets;

public class Script
{
X509Certificate cert;
TcpClient tcpClient;
}​

 

Indeed. I still see those errors when I tried to use those classes in Universal Windows app using Visual Studio without Unity. Anyway in the current situation you must rewrite your codes for WSA if your porting project uses TcpClient, X509Certificate, or maybe other classes.

 

Update: I successfully built a small sample project which includes both TcpClient and X509Certificate to Windows Store App by switching Scripting Backend option from .NET to IL2CPP which is located at Other Settings in Windows Store Player settings. It works fine so far.

notes: You have to generate App Manifest in Visual Studio, and configure it to allow network connection for network app.

 

I expect it works if I implement in-app purchase feature which uses Windows API (Windows Store API) within native plug-in for WSA. Or it won't work?

 

Well ok, is there a solution to this? A .dll to include in the project or anything that would allow us to use this Windows namespace inside Unity? Sorry but it's not clear to me. Thanks

 

Thanks, but it still gives me the errors:

error CS0234: The type or namespace name 'X509Certificates' does not exist in the namespace 'System.Security.Cryptography' (are you missing an assembly reference?)
error CS0234: The type or namespace name 'Mail' does not exist in the namespace 'System.Net' (are you missing an assembly reference?)

Anything I can try? Is there a specific namespace for those certificates in Windows? I only can find reference to System. By the way, my project is for Hololens, so it's set for .Net and I don't think I have any custom WINMD or .dll to inspect with the Plugin Inspector the documentation is talking about...

 

Alright, it seems that Windows.ApplicationModel.Email.EmailRecipient is the way to go, but I ended up buying this asset:
https://assetstore.unity.com/packag...il-email-composition-and-sending-plugin-90545

It makes things so easy that I can only recommend it.