Print PDF from http URL

Question

I have a project wherein a piece of it will require me to retrieve a PDF file from a http URL (i.e.
http://www.somewebsite.com/test.pdf) and print the PDF.  I've been looking for examples of how to do this but I'm not finding any. Is the only way to do this download the PDF to disk and then send to a
printer? Speaking of printing, I need to send the PDF to an IP address which I've not done before either. If someone could point me to a good example of that, I'd appreciate it.
Thank you.

Answer 1

Since I had access to ABCPDF8, I ended up using it to print the PDF.  ABCPDF comes with example projects that helped me figure out what I needed to get the PDF to print.  For anyone who also has access to
ABCPDF and needs to use it to print a PDF, I've pasted my code below.  The code is a cut-down version of the ABCPDF example as I did not need a lot of the functionality the example had. 
Thanks again to all who responded to my post.
ABCPDF8 code:
            private static WebSupergoo.ABCpdf8.Doc mDoc = null;
            private static System.Drawing.Printing.PrintDocument mPrint = null;
            private static int mPage = 0;
            private static int mPageSaved = 0;
            private static int mCopiesNumber;
            private static string pdfFile;
            private static string pdfPrinterName;
            private static string pdfPrinterTray;
            public enum Method
                AdobeReader,
                ABCPDF8
            /// <summary>
            /// </summary>
            /// <param name="pdfFilePath"></param>
            /// <param name="printerName"></param>
            /// <param name="printMethod"></param>
            public static void DoPrint(string pdfFilePath, string printerName, string printerTray, Method printMethod)
                if (System.IO.Path.GetExtension(pdfFilePath).Trim().ToUpper() != ".PDF")
                    throw new System.ApplicationException(String.Format("File '{0}' is not a PDF!", pdfFilePath));
                pdfFile = pdfFilePath;
                pdfPrinterName = printerName;
                pdfPrinterTray = printerTray;
                switch (printMethod)
                    case Method.AdobeReader:
                        PrintViaAdobeReader();
                        break;
                    case Method.ABCPDF8:
                        PrintViaABCPDF8();
                        break;
                    default:
                        break;
           private static void PrintViaABCPDF8()
                mDoc = new WebSupergoo.ABCpdf8.Doc();
                //read in the PDF
                mDoc.Read(pdfFile);
                //crete new print document
                mPrint = new System.Drawing.Printing.PrintDocument();
                mPrint.DocumentName = System.IO.Path.GetFileName(pdfFile);
                mPrint.PrinterSettings.PrinterName = pdfPrinterName;
                mPrint.PrinterSettings.FromPage = 1;
                mPrint.PrinterSettings.ToPage = mDoc.PageCount;
                mPrint.PrinterSettings.MinimumPage = 1;
                mPrint.PrinterSettings.MaximumPage = mDoc.PageCount;
                mPrint.QueryPageSettings += (sndr, args) =>
                    if (!String.IsNullOrWhiteSpace(pdfPrinterTray))
                        for (int i = 0; i < mPrint.PrinterSettings.PaperSources.Count; i++)
                            if (mPrint.PrinterSettings.PaperSources[i].SourceName.ToLower().Trim() == pdfPrinterTray.ToLower())
                                args.PageSettings.PaperSource = mPrint.PrinterSettings.PaperSources[i];
                                break;
                mPrint.BeginPrint += new System.Drawing.Printing.PrintEventHandler(DoBeginPrint);
                mPrint.EndPrint += new System.Drawing.Printing.PrintEventHandler(DoEndPrint);
                mPrint.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(DoPrintPage);
                mPrint.Print();
                mDoc.Clear();
                mDoc.Dispose();
            /// <summary>
            /// Start printing via ABCPDF8
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private static void DoBeginPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
                mPage = mPrint.PrinterSettings.FromPage;
                mPageSaved = mDoc.PageNumber;
                mCopiesNumber = 1;
            /// <summary>
            /// Print page using ABCPDF8
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private static void DoPrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
                mDoc.PageNumber = mPage;
                if (mCopiesNumber++ >= mPrint.PrinterSettings.Copies)
                    mPage++;
                    mCopiesNumber = 1;
                e.HasMorePages = mPage <= mPrint.PrinterSettings.ToPage;
                using (System.Drawing.Graphics g = e.Graphics)
                    if (mDoc.PageCount == 0) return;
                    if (mDoc.Page == 0) return;
                    WebSupergoo.ABCpdf8.XRect cropBox = mDoc.CropBox;
                    double srcWidth = (cropBox.Width / 72) * 100;
                    double srcHeight = (cropBox.Height / 72) * 100;
                    double pageWidth = e.PageBounds.Width;
                    double pageHeight = e.PageBounds.Height;
                    double marginX = e.PageSettings.HardMarginX;
                    double marginY = e.PageSettings.HardMarginY;
                    double dstWidth = pageWidth - (marginX * 2);
                    double dstHeight = pageHeight - (marginY * 2);
                    const bool autoRotate = true;
                    int rotate = 0;
                    if (autoRotate && srcWidth != srcHeight && dstWidth != dstHeight
                        && (srcWidth > srcHeight) != (dstWidth > dstHeight))
                        double temp = pageWidth;
                        pageWidth = pageHeight;
                        pageHeight = temp;
                        temp = marginX;
                        marginX = marginY;
                        marginY = temp;
                        temp = dstWidth;
                        dstWidth = dstHeight;
                        dstHeight = temp;
                        rotate = GetPageRotation(mDoc) % 360;
                        if (rotate <= -180)
                            rotate += 360;
                        else if (rotate > 180)
                            rotate -= 360;
                        rotate = rotate > 0 ? 90 : -90; // default to -90
                        // Use -90 because we want the staple to be at a top corner
                        // of the page.  Assuming a rotation of "rotate" (0 or 180 degrees)
                        // produces upright contents, a rotation of -90 or 90 degrees
                        // (respectively) produces outputs whose top is at the
                        // left edge of the portrait page.  The staple at the top-left
                        // corner of the portrait page will be at the top-right corner of the
                        // contents.
                    else
                        rotate = GetPageRotation(mDoc) % 360;
                        if (rotate != 180 && rotate != -180)
                            rotate = 0;
                    // if source bigger than destination then scale
                    if ((srcWidth > dstWidth) || (srcHeight > dstHeight))
                        double sx = dstWidth / srcWidth;
                        double sy = dstHeight / srcHeight;
                        double s = Math.Min(sx, sy);
                        srcWidth *= s;
                        srcHeight *= s;
                    // now center
                    double x = (pageWidth - srcWidth) / 2;
                    double y = (pageHeight - srcHeight) / 2;
                    // save state
                    double saveDotsPerInch = mDoc.Rendering.DotsPerInch;
                    mDoc.Rendering.AutoRotate = false;
                    System.Drawing.RectangleF theRect = new System.Drawing.RectangleF((float)x, (float)y, (float)srcWidth, (float)srcHeight);
                    int theRez = e.PageSettings.PrinterResolution.X;
                    if (e.PageSettings.Color) // color is generally CMYK so to translate from dpi to ppi we divide by four
                        theRez /= 4;
                    if (theRez <= 0) // Invalid printer resolution - use the default value
                        theRez = 72;
                    // draw content
                    mDoc.Rect.SetRect(cropBox);
                    System.Drawing.Drawing2D.Matrix oldTransform = null;
                    if (rotate != 0)
                        oldTransform = g.Transform;
                        switch (rotate)
                            case 90:
                                using (System.Drawing.Drawing2D.Matrix matrix = new System.Drawing.Drawing2D.Matrix(0,
1, -1, 0,
                                    (float)(2 * y + srcHeight), 0))
                                    g.MultiplyTransform(matrix);
                                break;
                            case -90:
                                using (System.Drawing.Drawing2D.Matrix matrix = new System.Drawing.Drawing2D.Matrix(0,
-1, 1, 0,
                                    0, (float)(2 * x + srcWidth)))
                                    g.MultiplyTransform(matrix);
                                break;
                            case 180:
                            case -180:
                                using (System.Drawing.Drawing2D.Matrix matrix = new System.Drawing.Drawing2D.Matrix(-1,
0, 0, -1,
                                    (float)(2 * x + srcWidth), (float)(2 * y +
srcHeight)))
                                    g.MultiplyTransform(matrix);
                                break;
                    g.SetClip(theRect);
                    if (!mDoc.Encryption.CanPrintHi)
                        mDoc.Rendering.DotsPerInch = 72;
                        using (System.Drawing.Bitmap bm = mDoc.Rendering.GetBitmap())
                            g.DrawImage(bm, theRect);
                    else
                        mDoc.Rendering.DotsPerInch = theRez;
                        mDoc.Rendering.ColorSpace = WebSupergoo.ABCpdf8.XRendering.ColorSpaceType.Rgb;
                        mDoc.Rendering.BitsPerChannel = 8;
                        byte[] theData = mDoc.Rendering.GetData(".emf");
                        System.IO.MemoryStream theStream = new System.IO.MemoryStream(theData);
                        using (System.Drawing.Imaging.Metafile theEMF = new System.Drawing.Imaging.Metafile(theStream))
                            g.DrawImage(theEMF, theRect);
                    if (oldTransform != null)
                        g.Transform = oldTransform;
                        oldTransform.Dispose();
                    // restore state
                    mDoc.Rendering.DotsPerInch = saveDotsPerInch;
                    mDoc.Rendering.AutoRotate = true;
            /// <summary>
            /// End printing ABCPDF8
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            private static void DoEndPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
                mDoc.PageNumber = mPageSaved;
            /// <summary>
            /// Current page number
            /// </summary>
            public static int PageNumber
                get
                    if (mDoc == null)
                        return 0;
                    else
                        return mDoc.PageNumber;
                set
                    if (mDoc != null && value <= mDoc.PageCount && value != mDoc.PageNumber)
                        mDoc.PageNumber = value;
            /// <summary>
            /// </summary>
            /// <param name="theDoc"></param>
            /// <returns></returns>
            private static int GetPageRotation(WebSupergoo.ABCpdf8.Doc theDoc)
                return (theDoc != null) ? theDoc.GetInfoInt(theDoc.Page, "Rotate") : 0;