Member Avatar for summey

I wrote a small app that dl youtube vids but like most company's they dont allow you to view youtube so i would like to incorporate a proxy option into my app to dl the youtube vids through a supplied proxy ip and port.

Thank you for your time.

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Generated

's sample shows the right idea: set a proxy on your HTTP requests instead of trying to force the WebBrowser control. For a desktop downloader you have two practical approaches that avoid the WebBrowser control and let you stream large files safely through a proxy.

Use HttpClient for modern, streamed downloads (recommended). Configure an HttpClientHandler with a proxy, request the response with ResponseHeadersRead and copy the response stream to disk so you don't buffer the whole file in memory:

var handler = new HttpClientHandler
{
    Proxy = new WebProxy("203.0.113.10", 8080),
    UseProxy = true
};
using (var client = new HttpClient(handler))
using (var resp = await client.GetAsync(fileUrl, HttpCompletionOption.ResponseHeadersRead))
using (var src = await resp.Content.ReadAsStreamAsync())
using (var dst = File.Create(targetPath))
{
    await src.CopyToAsync(dst);
}

For very simple cases, WebClient also supports a Proxy property and will DownloadFile synchronously. Set proxy credentials if the proxy requires authentication.

A few important notes and troubleshooting tips:

  • The WebBrowser control uses Internet Explorer/WinINet proxy settings and will not accept a per-control proxy object. To force it to use a proxy you'd need to change the process/IE proxy settings (WinINet APIs) or use an embedded browser that accepts per-instance proxy settings. See the WebBrowser documentation and the WinINet API for InternetSetOption for details.
  • YouTube uses HTTPS; the proxy must support CONNECT for port 443 (HTTP proxies) — SOCKS proxies are not supported by System.Net classes; use a SOCKS-capable library if needed.
  • Test a working proxy with a simple IP-echo service (for example, https://api.ipify.org) to confirm traffic is routed through the proxy.
  • For authenticated proxies set proxy credentials explicitly; always stream large files and handle timeouts/retries.

References: HttpClientHandler.Proxy and WebClient.Proxy documentation, WebBrowser overview, and WinINet InternetSetOption for programmatic proxy changes.

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Member Avatar for summey

If your are working with asp.net web application then it is easy and fast in asp.net using httpmodule.
Read this article - http://www.hanselman.com/blog/AnIPAddressBlockingHttpModuleForASPNETIn9Minutes.aspx
Extending ASP.NET Processing with HTTP Modules

This is a desktop application, I just want to learn how to implement proxy settings in my applications to give more privacy when using my apps. I read that the System.Net.WebProxy class could be the answer but im not sure anyone clarify this for me please

thank you for your post

Member Avatar for sknake 
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Web;
using System.IO;

namespace daniweb
{
  public partial class frmProxy : Form
  {
    public frmProxy()
    {
      InitializeComponent();
    }

    private bool useProxy;

    private void button1_Click(object sender, EventArgs e)
    {
      useProxy = true;
      WebProxy proxy = new WebProxy("146.57.249.99", 3124);
      HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(@"http://www.whatismyip.com");
      if (useProxy)
        req.Proxy = proxy;
      req.Method = "GET";
      HttpWebResponse objResponse = (HttpWebResponse)req.GetResponse();
      string htmlStuff;
      using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
      {
        htmlStuff = sr.ReadToEnd();
        sr.Close();
      }
      System.Diagnostics.Debugger.Break();
    }
  }
}
Member Avatar for summey

Awesome thank you i will try and implement this with in my apps.

Thank you again

Member Avatar for sknake

You're welcome

Please mark this thread as solved if you have found a solution to your problem and good luck!

Member Avatar for summey

so with that implementation above how would i download a file going through a proxy?

for testing to see if it work i was trying to use the webbrowser control i couldn't get the webbrower control to use the proxy.

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