asp.net core defaultProxy

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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

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.

DefaultProxy in ASP.NET Core 2.1, Is there an equivalent to the web.config setting for asp.net core 2.1 ? < system.net > < defaultProxy enabled = " true " useDefaultCredentials  Remarks. If the defaultProxy element is empty, the proxy settings from Internet Explorer will be used. This behavior is different from version 1.1 of the .NET Framework. An exception is thrown if the module element specifies a non-public type, the type is not deriving from the IWebProxy class, an exception from the parameterless constructor

To use an HTTP proxy in .net core, you have to implement IWebProxy interface.This is from the System.Net.Primitives.dll assembly. You can add it to project.json if not already there

e.g.

"frameworks": {
    "dotnet4.5": {
      "dependencies": {
        "System.Net.Primitives": "4.3.0"
      }
    }
}

Implementation is very trivial

public class MyHttpProxy : IWebProxy
    {

        public MyHttpProxy()
        {
           //here you can load it from your custom config settings 
            this.ProxyUri = new Uri(proxyUri);
        }

        public Uri ProxyUri { get; set; }

        public ICredentials Credentials { get; set; }

        public Uri GetProxy(Uri destination)
        {
            return this.ProxyUri;
        }

        public bool IsBypassed(Uri host)
        {
            //you can proxy all requests or implement bypass urls based on config settings
            return false; 

        }
    }


var config = new HttpClientHandler
{
    UseProxy = true,
    Proxy = new MyHttpProxy()
};

//then you can simply pass the config to HttpClient
var http = new HttpClient(config)

checkout https://msdn.microsoft.com/en-us/library/system.net.iwebproxy(v=vs.100).aspx

Default proxy issues · Issue #1404 · dotnet/core · GitHub, config and the application will use your system's default proxy. <system.net> <​defaultProxy useDefaultCredentials="true" /> </  In the recommended configuration for ASP.NET Core, the app is hosted using IIS/ASP.NET Core Module, Nginx, or Apache. Proxy servers, load balancers, and other network appliances often obscure information about the request before it reaches the app: When HTTPS requests are proxied

You should use a middleware. Did you have a look at this one:

https://github.com/aspnet/Proxy

there's a 'samples' folder: https://github.com/aspnet/Proxy/tree/dev/samples/Microsoft.AspNetCore.Proxy.Samples

Other resources on the topic: http://josephwoodward.co.uk/2016/07/proxying-http-requests-asp-net-core-using-kestrel

http://overengineer.net/creating-a-simple-proxy-server-middleware-in-asp-net-core

Does a middleware works for you?

Question on defaultProxy in .net core : aspnetcore, r/aspnetcore: News, posts, articles about ASP.NET Core (formerly ASP.NET 5) We have existing code that works in a ASP.NET project but when I tried to do the same thing with a .NET Core Project is when I realized I have nowhere to set default proxy and unfortunately I am behind a Proxy at work.

Another incompleted work around is:

After you deploy .NET Core app to a web server(mine is IIS). There is actually a web.config file in the root folder.

Manually add

 <system.net>
 <defaultProxy useDefaultCredentials="true">
 </defaultProxy>
 </system.net>

or your specific setting will do the magic

Only works on the server though. Your local build still won't work.

HttpClient.DefaultProxy Property (System.Net.Http), NO_PROXY: a comma-separated list of hostnames that should be excluded from proxying. Applies to .NET. 5 Preview 1 .NET Core. 3.1 3.0  Is there an equivalent in asp.net core ? I was looking on the web and most examples are implementing middleware to make the server act as a proxy. I was looking on the web and most examples are implementing middleware to make the server act as a proxy.

Configure ASP.NET Core to work with proxy servers and load , Forwarded headers; IIS/IIS Express and ASP.NET Core Module; Other proxy server and load balancer scenarios; Nginx configuration; Apache  <system.net> <defaultProxy useDefaultCredentials="true" > </defaultProxy> </system.net> But the same is not possible with .NET Core Client. I was hoping that, atleast they provide an API to set the CredentialCache.DefaultCredentials.

Default proxy in .net core 2.0 - asp.net-core-2.0 - html, <system.net> <defaultProxy useDefaultCredentials="true"></defaultProxy> </​system.net> But in .net core 2.0 where I've make a web request to external api from  On .NET Core, WinHttpHandler is used as the underlying stack for HttpClientHandler. On .NET Framework, WebRequest.DefaultWebProxy initially points to proxy settings on the Windows machine that are "Wininet-style", i.e. Internet Explorer registry settings, etc.

HttpClients with Proxies in .Net Core 2, In net 4.5 we are working with proxy like this: <system.net> <!-- --> <defaultProxy enabled="true" useDefaultCredentials="false"> <proxy  <configuration> <system.net> <defaultProxy> <proxy bypassonlocal="false" usesystemdefault="true" /> </defaultProxy> </system.net> </configuration> See MSDN for more on this topic. If the .NET application is running in a different user account (for example, a Windows service), edit the machine.config file:

Comments
  • Thanks yo much. How i can do this for wcf client?
  • Hi. I need use defaultProxy because i have a client wcf that i am accesing throught a proxy with the ip address validated on the whitelist of my provider.
  • @MarceloOliveto are you using client-oriented WCF libraries in .net core ? looks like it still does not support proxying,there is an issue opened for it github.com/dotnet/wcf/issues/1592
  • @MarceloOliveto Did you ever find a solution for this?
  • Hi. I need use defaultProxy because i have a client wcf that i am accesing throught a proxy with the ip address validated on the whitelist of my provider.
  • That's the wrong type of proxy. That makes your app a proxy, not make your app use a proxy.