Passing cookies to Image.GetInstance - asp.net-mvc-3

Question

Using image handler to convert relative path to absolute.
protected byte[] ConvertHTMLToPDF(string HTMLCode)
{
if (Request.Url == null)
throw new Exception();
var doc = new Document(PageSize.A4);
doc.Open();
var interfaceProps = new Hashtable();
var ih = new ImageHander {BaseUri = Request.Url.ToString()};
interfaceProps.Add("img_provider", ih);
foreach (IElement element in HTMLWorker.ParseToList(new StringReader(HTMLCode), null, interfaceProps))
{
doc.Add(element);
}
var _xmlr = new XmlTextReader(new StringReader(HTMLCode));
HtmlParser.Parse(doc, _xmlr);
var stream = new MemoryStream();
PdfWriter.GetInstance(doc, stream);
doc.Close();
return stream.ToArray();
}
class:
public class ImageHander : IImageProvider
{
public string BaseUri;
public Image GetImage(string src, Hashtable h, ChainedProperties cprops, IDocListener doc)
{
string imgPath;
if (src.ToLower().Contains("http://") == false)
imgPath = HttpContext.Current.Request.Url.Scheme + "://" + HttpContext.Current.Request.Url.Authority + src;
else
imgPath = src;
return Image.GetInstance(imgPath);
}
}
imgPath at the end is correct. But it's not static file, it's url of action that returns image, so I need to pass cookies when requesting image. Is it possible?

Answer 1

Yes, it is possible, but you're gonna have to send the request yourself and not rely on the Image.GetInstance method. For example using the HttpClient you could send cookies along with the request:
var imageUrl = new Uri(imagePath);
var cookieContainer = new CookieContainer();
using (var handler = new HttpClientHandler { CookieContainer = cookieContainer })
using (var client = new HttpClient(handler))
{
cookieContainer.Add(
new Uri(imageUrl.GetLeftPart(UriPartial.Authority)),
new Cookie("CookieName", "cookie_value")
);
var response = client.GetAsync(imageUrl).Result;
response.EnsureSuccessStatusCode();
Stream imageStream = response.Content.ReadAsStreamAsync().Result;
// You've got the Stream here, read the documentation of iTextSharp
// how to create an Image instance from a Stream:
return Image.FromStream(imageStream); // ?????
// or maybe there's a method allowing you to create an Image from byte[]
byte[] imageData = new byte[imageStream.Length];
imageStream.Read(imageData, 0, imageData.Length);
return Image.FromByteArray(imageData); // ?????
}