CODEWITHSUNDEEP
c#proxydotnet-httpclientsocksflurl
abritov
abritov

Reputation: 403

C# HttpClient tor socks4/5 proxy?

I can set http proxy with this code:

public class CustomFlurlHttpClient : DefaultHttpClientFactory {
    public override HttpClient CreateClient(Url url, HttpMessageHandler m) {
        return base.CreateClient(url, CreateProxyHttpClientHandler("http://192.168.0.103:9090"));
    }

    private HttpClientHandler CreateProxyHttpClientHandler(string proxyUrl, string user = "", string passw = "") {
        NetworkCredential proxyCreds = null;
        var proxyUri = new Uri(proxyUrl);
        proxyCreds = new NetworkCredential (user, passw);
        var proxy = new WebProxy (proxyUri, false) {
            UseDefaultCredentials = false,
            Credentials = proxyCreds
        };
        var clientHandler = new HttpClientHandler {
            UseProxy = true,
            Proxy = proxy,
            PreAuthenticate = true,
            UseDefaultCredentials = false
        };
        if (user != "" && passw != "") {
            clientHandler.Credentials = new NetworkCredential (user, passw);
        }
        return clientHandler;
    }
}
class MainClass {
    public static void Main (string[] args) {
        run ();
        Console.ReadKey ();
    }

    async static void run() {
        using(FlurlClient client = new FlurlClient(c => { c.HttpClientFactory = new CustomFlurlHttpClient();})) {
            var result = await client.WithUrl("https://www.google.com").GetStringAsync();
            Console.WriteLine(result);
        };
    }
}

but not socks proxy. Any ideas how to do it? Or any other(not deprecated) rest client with async/await syntax supported?

Upvotes: 9

Views: 12209

Answers (3)

Majid
Majid

Reputation: 3471

In .NET 6 you can do it easily as I answered here

But here is a quick answer:

var proxy = new WebProxy
{
    Address = new Uri("socks5://localhost:8080")
};
//proxy.Credentials = new NetworkCredential(); //Used to set Proxy logins. 
var handler = new HttpClientHandler
{
    Proxy = proxy
};
var httpClient = new HttpClient(handler);

or to configure a named HttpClient to be created using IHttpClientFactory:

Services.AddHttpClient("WithProxy")
    .ConfigurePrimaryHttpMessageHandler(() =>
    {
        var proxy = new WebProxy
        {
            Address = new Uri("socks5://localhost:8080")
        };
        return new HttpClientHandler
        {
                    Proxy = proxy
         };
    });

and when you injected IHttpClientFactory object:

httpClient = httpClientFactory.CreateClient("WithProxy");

Upvotes: 9

Todd Menier
Todd Menier

Reputation: 39319

A slightly better option is to override CreateMessageHandler instead of CreateClient in your custom factory:

public class CustomFlurlHttpClient : DefaultHttpClientFactory
{
    public override HttpMessageHandler CreateMessageHandler() {
        var socksProxy = new Socks5ProxyClient("127.0.0.1", 9150);
        return new ProxyHandler(socksProxy);
    }
}

Upvotes: 2

abritov
abritov

Reputation: 403

Possible solution is to use Extreme.Net package, that provide socks proxy handler. For example, from code above we need to replace CreateClient method with this:

        public override HttpClient CreateClient(Url url, HttpMessageHandler m)
    {
        var socksProxy = new Socks5ProxyClient("127.0.0.1", 9150);
        var handler = new ProxyHandler(socksProxy);
        return base.CreateClient(url, handler);
    }

And it works!

Upvotes: 3

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