PHP Script Or C# code to download files

I need a C# or PHP developer for a small piece of code Short description: I need a a piece of code that downloads a file from a remote link in the web and return the bytes to the client. Long description: I need a piece of code that will read the parameter "download_url", and go to this download_url parameter and download the bytes from it and then return it back to the client via response. Think about it as if my code is in the middle between the server that has the file and the client who wants to download the file. THE SCRIPT MUST ALLOW: 1- downloads to be resumed at any time by adding the proper headers. 2- script to use a proxy while creating the request. Process should go like this 1- user will go to [login to view URL]?download_url=[login to view URL] 2- code will check if a proxy is set 3- code will check if client only requested range of bytes (RESUME DOWNLOAD Request) 4- code will create a request to [login to view URL] 5- add a proxy to the request if proxy settings are set 6- only download range of bytes (PLEASE REFER TO STEP 3) 7- download bytes and flush it in the response to the client 8- close the connection at the end Tips: * response StatusCode has to be 206 * consider the headers: Ranges, Accept-Ranges and Content-Range The code can be written in C# or PHP. it doesn't matter but i would prefer C# though. I have attached an image and a C# code that i wrote. i hope you find these attached files helpful.