I am working on upgrading a .NET application without changing its functionality. What I did so far is:
- upgrading from mvc 2 to mvc 4
- upgrading from framework 3.5 to 4.0
- using visual studio 2015 instead of 2010
- upgrading the custom made utilities and mvc the same way
Right now I am stuck at the pdf conversion in the custom utilities dll. The error I get is in the image below. It says:
ExportHtmlToPdfBytes failed for url http://localhost:4984/Rijopdracht.mvc/Print/861175: Conversion error: WebKit Navigation timeout.
The link is available and accessible behind a proxy. The method ExportHtmlToPdfBytes looks like this:
public byte[] ExportHtmlToPdfBytes(string url)
{
try
{
PdfConverter pdfConverter = CreatePdfConvertor();
byte[] bytes = pdfConverter.GetPdfBytesFromUrl(url);
return bytes;
}
catch (Exception ex)
{
throw new WrapperException(ex, "ExportHtmlToPdfBytes failed for url {0}:", url);
}
}
During debugging I discovered that the program breaks when it calls the function GetPdfBytesFromUrl. After the program breaks, the proxy user I use to access the url, gets blocked. I found out that a user gets blocked if and only if the password has been typed wrong 6 or more times.
I triple checked the username and password that came from the appsettings, and they are correct. Can somebody tell me what is going on and how to solve this?
The complete class PdfUtilities where this function comes from is:
using ExpertPdf.HtmlToPdf;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Jumbo.Utilities
{
public class PdfUtilities
{
public PdfUtilities() {
FooterText = String.Empty;
FitWidth = false;
LeftMargin = 5;
RightMargin = 5;
TopMargin = 5;
BottomMargin = 5;
PdfCompressionLevel = PdfCompressionLevel.Normal;
JpegCompressionLevel = 10;
}
public string FooterText { get; set; }
public string AuthenticationUsername { get; set; }
public string AuthenticationPassword { get; set; }
public bool FitWidth { get; set; }
public string BaseUrl { get; set; }
public int LeftMargin { get; set; }
public int RightMargin { get; set; }
public int TopMargin { get; set; }
public int BottomMargin { get; set; }
public int JpegCompressionLevel { get; set; }
public PdfCompressionLevel PdfCompressionLevel { get; set; }
private PdfConverter CreatePdfConvertor()
{
PdfConverter pdfConverter = new PdfConverter();
pdfConverter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
pdfConverter.PdfDocumentOptions.PdfCompressionLevel = PdfCompressionLevel;
pdfConverter.PdfDocumentOptions.PdfPageOrientation = PDFPageOrientation.Landscape;
pdfConverter.PdfDocumentOptions.LiveUrlsEnabled = false;
pdfConverter.PdfDocumentOptions.ShowHeader = true;
pdfConverter.PdfDocumentOptions.ShowFooter = true;
pdfConverter.PdfDocumentOptions.LeftMargin = LeftMargin;
pdfConverter.PdfDocumentOptions.RightMargin = RightMargin;
pdfConverter.PdfDocumentOptions.TopMargin = TopMargin;
pdfConverter.PdfDocumentOptions.BottomMargin = BottomMargin;
pdfConverter.PdfDocumentOptions.GenerateSelectablePdf = true;
pdfConverter.PdfDocumentOptions.EmbedFonts = true;
pdfConverter.PdfDocumentOptions.JpegCompressionLevel = JpegCompressionLevel;
if (FitWidth)
{
pdfConverter.PageWidth = 0;
pdfConverter.PdfDocumentOptions.FitWidth = true;
pdfConverter.PdfDocumentOptions.StretchToFit = true;
}
else
pdfConverter.PdfDocumentOptions.FitWidth = false;
//pdfConverter.PageWidth = 0;
pdfConverter.PdfDocumentOptions.ShowHeader = false;
pdfConverter.PdfFooterOptions.FooterTextColor = System.Drawing.Color.Black;
pdfConverter.PdfFooterOptions.DrawFooterLine = false;
pdfConverter.PdfFooterOptions.PageNumberText = "Page";
pdfConverter.PdfFooterOptions.ShowPageNumber = true;
pdfConverter.PdfFooterOptions.FooterText = FooterText;
if (!string.IsNullOrEmpty(AuthenticationUsername) && !string.IsNullOrEmpty(AuthenticationPassword))
{
pdfConverter.AuthenticationOptions.Username = AuthenticationUsername;
pdfConverter.AuthenticationOptions.Password = AuthenticationPassword;
}
else
{
string username = SettingsUtilities.GetSetting<string>(GenericConstants.AS_PROXY_USERNAME, null);
if (!String.IsNullOrEmpty(username))
{
string password = SettingsUtilities.GetSetting<string>(GenericConstants.AS_PROXY_PASSWORD, null);
pdfConverter.AuthenticationOptions.Username = username;
pdfConverter.AuthenticationOptions.Password = password;
}
}
pdfConverter.LicenseKey = "tZ6HlY2Vh4WBg5WDm4WVhoSbhIebjIyMjA==";
return pdfConverter;
}
public byte[] ExportHtmlToPdfBytes(string url)
{
try
{
PdfConverter pdfConverter = CreatePdfConvertor();
byte[] bytes = pdfConverter.GetPdfBytesFromUrl(url);
return bytes;
}
catch (Exception ex)
{
throw new WrapperException(ex, "ExportHtmlToPdfBytes failed for url {0}:", url);
}
}
public byte[] ExportHtmlStringToPdfBytes(string html)
{
PdfConverter pdfConverter = CreatePdfConvertor();
byte[] bytes;
if (BaseUrl == null)
bytes = pdfConverter.GetPdfBytesFromHtmlString(html);
else
bytes = pdfConverter.GetPdfBytesFromHtmlString(html, BaseUrl);
return bytes;
}
public void SaveHtmlToPdf(string url, string saveLocation)
{
Logging.LogVerboseCaller(Logging.Cat.Utilities, "Start export to htm for " + url);
byte[] contents = ExportHtmlToPdfBytes(url);
Logging.LogVerboseCaller(Logging.Cat.Utilities, "End export. Start save to " + saveLocation);
FileUtilities.SaveFile(saveLocation, contents);
Logging.LogVerboseCaller(Logging.Cat.Utilities, "End save");
}
}
}
