download file from url on other Server "Host Download" - asp.net mvc

Question

For downloading files from my server I use this method in asp.net MVC:

string fileName = "SAMSUNG.zip";
string path = @"D:\Tutorial MVC5\ContosoUniversity\ContosoUniversity\dlfile\";
string fullPath = path + fileName;
Response.Clear();
Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName);
Response.ContentType = "application/x-zip-compressed";
Response.WriteFile(fullPath);
Response.End();

But, what about when I want to download files from another server, for example from a "host download". How can I do that? For example my download direct link is: http://dl.test.com/file.zip , now user clicks a link <a href="http://test.com/1">file.zip</a> is to download the file. Now I want to send file.zip to the user without a user knowing where my trusted link is and where my host download is. She or he just chooses the file to download.

Thanks for help!

Answer 1

are you familiar with how to use and or Set Request.Params your url originally should look like this if you want to check the QueryString

http://dl.test.com?file_name=SAMSUNG.zip

if(Request.Params["file_name"] == "SAMSUNG.zip"
{
    Uri uri = new Uri("http://dl.test.com/file.zip");
    using (var wc = new WebClient())
    using (var download = wc.OpenRead(uri))
    using (var respStream = Response.OutputStream)
    {
        download.CopyTo(respStream);
    }
}   

Answer 2

Hello i used the next Code in .net Core 5

[HttpGet("Descargar")]
public FileResult Descargar(string url,string nombre)
{
    Uri uri = new Uri(url);
    WebClient wc = new WebClient();
    Stream downloadStream = wc.OpenRead(uri);
    MemoryStream ms = new MemoryStream();
    downloadStream.CopyTo(ms);
        
    return File(ms.ToArray(), System.Net.Mime.MediaTypeNames.Application.Octet, nombre);
}