C#

<br />
using System;<br />
using System.Collections.Generic;<br />
using System.Linq;<br />
using System.Text;<br />
using System.IO;<br />
using System.Net;<br />
<br />
namespace FirstWebProxy<br />
{<br />
    class Program<br />
    {<br />
        static void Main(string[] args)<br />
        {<br />
            Console.WriteLine("Available proxys:");<br />
<br />
            string[] lines = System.IO.File.ReadAllLines(@"C:\Users\user0\Documents\Visual Studio 2010\Projects\FirstWebProxy\ProxyIps.txt");<br />
<br />
            foreach (string line in lines)<br />
            {<br />
            <br />
                Console.WriteLine("\t" + line);<br />
            }<br />
<br />
            Console.WriteLine("Would you like to connect to a random server? Type Y or N");<br />
            string r = Console.ReadLine();<br />
<br />
            if (r =="Y" || r =="y") {<br />
                <pre lang="cs">var p = new Random();<br />
                var randomLineNumber = p.Next(0, lines.Length - 1);<br />
                var host = lines[randomLineNumber];<br />
<br />
                string url = "http://www.google.com/";<br />
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);<br />
                WebProxy myproxy = new WebProxy(host, false);<br />
                request.Proxy = myproxy;<br />
                request.Method = "GET";<br />
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();<br />
            }<br />
<br />
        }<br />
    }<br />
}<br />
<br />

PdfContentByte cb1 = outputWriter.DirectContent;

PdfContentByte cb1 = outputWriter.DirectContentUnder;

if (<condition>)
  PdfContentByte cb1 = outputWriter.DirectContentUnder;
else
  PdfContentByte cb1 = outputWriter.DirectContent; 

string TempFileName = "";

TempFileName = Path.GetTempFileName();

FilePdfReader = new PdfReader(FileMemoryStream);
Document inputDoc = new Document(FilePdfReader.GetPageSizeWithRotation(1));





using (FileStream fs = new FileStream(TempFileName, FileMode.Create))
{
    //Create the PDF Writer to create the new PDF Document
    PdfWriter outputWriter = PdfWriter.GetInstance(inputDoc,fs);

    inputDoc.Open();


    //Create the Content Byte to stamp to the writer
    PdfContentByte cb1 = outputWriter.DirectContent;

    //Get the PDF document to use as overlay
    PdfReader overlayReader = new PdfReader(OverlayMemoryStream);
    PdfImportedPage overLay = outputWriter.GetImportedPage(overlayReader, 1);

    PdfGState GState = new PdfGState();

    //Get the overlay page rotation
    int overlayRotation = overlayReader.GetPageRotation(1);

    int n = FilePdfReader.NumberOfPages;

    int i = 1;
    while (i <= n)
    {
        //Make sure the new page's page size macthes the original document
        inputDoc.SetPageSize(FilePdfReader.GetPageSizeWithRotation(i));
        inputDoc.NewPage();


        PdfImportedPage page = outputWriter.GetImportedPage(FilePdfReader, i);
        int rotation = FilePdfReader.GetPageRotation(i);


        //Overlay Transperency
        if ( (OverlayFillOpacity != 0f) || (OverlayStrokeOpacity != 0f) )
        {
            GState.FillOpacity = OverlayFillOpacity;
            GState.StrokeOpacity = OverlayStrokeOpacity;

            cb1.SaveState();
            cb1.SetGState(GState);
        }


        //Insert the overlay with correct rotation
        if (overlayRotation == 90 || overlayRotation == 270)
        {
            cb1.AddTemplate(overLay, 0, -1f, 1f, 0, 0,
                FilePdfReader.GetPageSizeWithRotation(i).Height);
        }
        else
        {
            cb1.AddTemplate(overLay, 1f, 0, 0, 1f, 0, 0);
        }

        //Insert the original PDF page with correct rotation
        if (rotation == 90 || rotation == 270)
        {
            cb1.AddTemplate(page, 0, -1f, 1f, 0, 0,
                FilePdfReader.GetPageSizeWithRotation(i).Height);
        }
        else
        {
            cb1.AddTemplate(page, 1f, 0, 0, 1f, 0, 0);
        }

        //Increment the page
        i++;
    }

    //Close the input file
    inputDoc.Close();
    //Close the reader for the overlay file
    overlayReader.Close();

System.Drawing.Imaging.BitmapData bmpdata = tmpbmp.LockBits(tmprect, System.Drawing.Imaging.ImageLockMode.ReadWrite, tmpbmp.PixelFormat);
IntPtr pointer = bmpdata.Scan0;
//int nrofbytes = Math.Abs(bmpdata.Stride) * bmpdata.Height;  //stride = scan width
int nrofbytes = bmpdata.Width * bmpdata.Height;  //stride = scan width
byte [] bytes = new byte[nrofbytes];
	
System.Runtime.InteropServices.Marshal.Copy(pointer, bytes, 0, nrofbytes);
System.Drawing.Color color_white = System.Drawing.Color.White;
System.Drawing.Color color_orange = System.Drawing.Color.Orange;
long count = 0;
for(int i = 0; i < bytes.Length-3; i+=3){
	if(bytes[i] > 235 && bytes[i+1] > 235 && bytes[i+2] > 235){
		bytes[i] = color_white.R;
		bytes[i+1] = color_white.G;
		bytes[i+2] = color_white.B;
	}											//end if
	else{
		count++;
		bytes[i] = color_orange.R;
		bytes[i+1] = color_orange.G;
		bytes[i+2] = color_orange.B;
	}											//end else
}												//end for
System.Runtime.InteropServices.Marshal.Copy(bytes, 0, pointer, nrofbytes);
tmpbmp.UnlockBits(bmpdata);

System.Runtime.InteropServices.Marshal.Copy(bytes, 0, pointer, nrofbytes);