asp.net core defaultProxy

Question

In net 4.5 we are working with proxy like this:

<system.net>
    <!-- -->
    <defaultProxy enabled="true" useDefaultCredentials="false">
        <proxy usesystemdefault="True" proxyaddress="http://192.168.1.1:8888" bypassonlocal="True" autoDetect="False" />
        <module type="CommonLibrary.Proxy.MyProxy, CommonLibrary, Version=1.0.0.0, Culture=neutral" />
    </defaultProxy>

    <settings>
        <httpWebRequest useUnsafeHeaderParsing="true" />
        <servicePointManager expect100Continue="false" />
    </settings>
</system.net>

but in asp.net core or test we can't found a solution like the above Could someone please help me?

I really appreciate your help

Thanks, Regards

Answer 1

Whilst manually setting the proxy works when it's possible to use a HttpClientHander, defaulting all requests to do so without code, like you could do in the .NET Framework is currently not possible. Which is bummer if you're using a library that doesn't expose this functionality.

Thankfully, from .NET Core 3.0, this will be possible simply by setting environment variables (i.e. behaves exactly as Linux has worked forever): https://github.com/dotnet/corefx/issues/37187

Alternatively, https://github.com/dotnet/corefx/issues/36553 added a new static DefaultWebProxy property on HttpClient that will allow you to accomplish the same thing via code. This will also be available in Core 3.0.