Description

Hello,

The website to which I want to connect requires a client certificate and I am using two different HttpClients, one with and other without the cert. The one with it is supposed to connect and the other should not.

• HttpClient 1 no cert, when request, should receive 400 Bad Request
• HttpClient 2 has cert, when request, should receive 200 OK

The scenario above works correctly under .NET 6, but on .NET 7, the outcome is different:

• If HttpClient 1 calls first, it receives 400 Bad Request. When HttpClient 2 calls subsequently, it also receives 400 Bad Request, even having a client certificate.
• If HttpClient 2 calls first, it receives 200 OK. When HttpClient 1 calls subsequently, it also receives 200 OK, even not having a client certificate.

This problem happens only on Linux; on Windows, the behavior is correct, the same as in .NET 6. I did not test on MacOSX.
The website that I use to test client certificates is https://badssl.com/ (it has certificates for testing).
Code for how the HttpClients are being built: link

Reproduction Steps

Video below

Expected behavior

HttpClients with different HttpMessageHandlers should work independently, I believe

Actual behavior

.

Regression?

This problem does not happen in .NET 6

Known Workarounds

No response

Configuration

dotnet --info

.NET SDK:
 Version:   7.0.101
 Commit:    bb24aafa11

Ambiente de runtime:
 OS Name:     arch
 OS Version:  
 OS Platform: Linux
 RID:         arch-x64
 Base Path:   /home/alexandre/.dotnet/sdk/7.0.101/

Host:
  Version:      7.0.1
  Architecture: x64
  Commit:       97203d38ba

.NET SDKs installed:
  6.0.403 [/home/alexandre/.dotnet/sdk]
  7.0.101 [/home/alexandre/.dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.11 [/home/alexandre/.dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.1 [/home/alexandre/.dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.11 [/home/alexandre/.dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.1 [/home/alexandre/.dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
  None

Environment variables:
  DOTNET_ROOT       [/home/alexandre/.dotnet/]

global.json file:
  Not found

Other information

No response