Administering an IIS6 host for client who is new to an Ajax Upload tool obtained from here: http://ajaxuploader.com/
http://cutesoft.net
When Integrated Windows Authentication is enabled, a single file upload works fine, multi-file upload attempts don't appear to progress (but don't log any errors, that I've found yet..?). Modifying Authentication to anonymous allows Multifile upload to work fine.
Files targeted to be uploaded to a SQL Server db. Pasted code line for line below.
Default.aspx.cs contains:
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
ltOutput.Text = "";
}
protected void FileUploaded(object sender, UploaderEventArgs e)
{
ltOutput.Text += "File upload complete: <a href=\"download"
+ .aspx?guid=" + e.FileGuid.ToString() + "\">" + e.FileName
+ "</a>, File Size: " + e.FileSize + ", FileGUID: "
+ e.FileGuid.ToString() + "</a><br/>";
}
}
I'd bet that this is because they're using a Flash component for the multi file upload. The single upload uses the browser session so it stays authenticated, but the multi upload uses Flash which connects to the server in a different session, hence the authentication issues. Flash doesn't handle windows auth properly.
You've got a couple choices, neither of which are fun:
Make your file upload handler available anonymously or with forms auth
Only use the single file upload
Related
I'm trying to integrate swagger in MYcommercewebservices.
I read post and done all steps listed on it, but still having this error.
https://localhost:9002/mycommercewebservices/v2/v2/api-docs working fine. https://localhost:9002/mycommercewebservices/v2/swagger-ui.html - return UnknownResourceError.
Furthermore - if I navigate to https://localhost:9002/mycommercewebservices/swagger-ui.html (without 'v2') it'll show me this message (javascript alert):
Unable to infer base URL. This is common when using dynamic servlet
registration or when the API is behind an API Gateway. The base URL is
the root of where all the swagger resources are served. For e.g. if
the API is available at http://example.org/api/v2/api-docs then the
base URL is http://example.org/api/. Please enter the location
manually:
I found this controller, and probably part of the problem was in it because it was throwing an exception when I navigated to https://localhost:9002/mycommercewebservices/v2/swagger-ui.html
#Controller
public class DefaultController
{
#RequestMapping
public void defaultRequest(final HttpServletRequest request)
{
throw new UnknownResourceException("There is no resource for path " + YSanitizer.sanitize(request.getRequestURI()));
}
}
Now I disabled controller, but still having the same exception, but now it's in json format instead of .xml.
Thank you!
The main problem was in DefaultController (in MYcommercewebservices)
#Controller
public class DefaultController
{
#RequestMapping
public void defaultRequest(final HttpServletRequest request)
{
throw new UnknownResourceException("There is no resource for path " + YSanitizer.sanitize(request.getRequestURI()));
}
}
It was catching my request and throwing the exception.
When I disabled this controller, I continued to receive an exception, but now it was in json format(before it was in xml).
Than I added this to springmvc-v2-servlet.xml
<mvc:default-servlet-handler/>
<mvc:resources mapping="swagger-ui.html" location="classpath:/META-INF/resources/"/>
<mvc:resources mapping="/webjars/**" location="classpath:/META-INF/resources/webjars/"/>
Now UI works fine!
Also there were another manipulation before all this, but you can find them in hybris experts(quite big post).
We noticed that file download get stuck after some time in IE 11 client browser if downloaded from ASP.NET MVC application deployed to Azure service. The file download starts normally in IE 11. For several minutes the downloaded file size get increased. Then the yet downloaded file size get stuck with no more increases. If we continue to wait even more for around 1h, then the IE shows 'download was interrupted' error.
Azure instances have IIS 8.5 on board with app pool in default integrated pipeline mode. Application is ASP.NET MVC 5, targeted .NET 4.5.2.
There are no problems with download from Azure for Chrome browser.
There are no problems with download from local IIS express for both IE 11 and Chrome browsers.
There are no problems with download from local IIS 7.5 for both IE 11 and Chrome browsers.
So it looks like the only problem pair is Azure hosted IIS 8.5 + IE 11.
Application use the following code to stream file to client:
private const int StreamBufferSize = 1024*128; // 128KB
public static async Task StreamData(string fileName, Func<Stream, Task> streamFiller, HttpResponseBase response)
{
response.AddHeader("Content-Disposition", string.Format("attachment;filename=\"{0}\"", fileName));
response.ContentType = MimeMapping.GetMimeMapping(fileName);
response.BufferOutput = false;
using (Stream outputStream = new BufferedStream(response.OutputStream, StreamBufferSize))
{
await streamFiller(outputStream);
}
}
Where 'streamFiller()' is externally passed Func that writes data to the stream.
Please note that file is not so large, around 20Mb, but server do not send it at once. Instead server streams file with buffered chunks (see code above). Time between each chunk get streamed (buffer flashed) may be as long as several minutes.
By looking into Azure IIS I found that the client request looks like the following:
during normal download phase: State: ExecureRequestHandler, Module Name: ManagedPipelineHandler
since the download get stuck: State: SendResponse, Module Name: RemoveUnnecessaryHeadersModule.
To be clear what is RemoveUnnecessaryHeadersModule: we do the 'Server' header removing as following:
public class RemoveUnnecessaryHeadersModule : IHttpModule
{
public void Init(HttpApplication context)
{
// This only works if running in IIS7+ Integrated Pipeline mode
if (!HttpRuntime.UsingIntegratedPipeline) return;
context.PreSendRequestHeaders += (sender, e) =>
{
var app = sender as HttpApplication;
if (app != null && app.Context != null)
{
app.Context.Response.Headers.Remove("Server");
}
};
}
}
I have successfully set up using the viewer with the following code:
protected void btnShowPDFS_OnClick(object sender, EventArgs e)
{
// Display all files.
string[] files = Directory.GetFiles(#"D:\Reports\2014\July\", "*.PDF");
var pdfNames = new List<string>();
foreach (string file in files)
{
string fileName = Path.GetFileName(file);
string queryString = "/web/viewer.html?file=" + System.Web.HttpUtility.UrlEncode("../July/" + fileName);
pdfNames.Add(queryString);
}
listView.DataSource = pdfNames;
listView.DataBind();
}
Now, this all works fine if all my PDF's are in a folder within the website (i.e localhost). However, how do i point the view to either a network share, or just another folder on the same machine, but outside of IIS?
A browser's XMLHttpRequest might have a restrictions for local files access (Firefox has more relaxed policy for local file than other browsers).
PDF.js is using XHR; and PDF.js also allows "load" files from a typed array (Uint8Array). You can use the latter in your solution. Notice the Internet Explorer (WebBrowser control) has window.external that can be used to transmit the data from the host application, see http://msdn.microsoft.com/en-us/library/system.windows.forms.webbrowser.objectforscripting(v=vs.110).aspx
Can i make asp application or mvc application that can download data from other server (site) using ftp. I have 2 web sites and i want to download a file from one site to another using ftp.
Yes.
Example copied from How to Download Files with FTP. The example is for a console app, but I think you can figure quite easily how to adapt it to your site's structure.
One thing you might consider is just hosting the file on the site (like normal HTTP) and then download it via WebClient instead of FTP.
using System;
using System.IO;
using System.Net;
using System.Text;
namespace Examples.System.Net
{
public class WebRequestGetExample
{
public static void Main ()
{
// Get the object used to communicate with the server.
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://www.contoso.com/test.htm");
request.Method = WebRequestMethods.Ftp.DownloadFile;
// This example assumes the FTP site uses anonymous logon.
request.Credentials = new NetworkCredential ("anonymous","janeDoe#contoso.com");
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
Console.WriteLine(reader.ReadToEnd());
Console.WriteLine("Download Complete, status {0}", response.StatusDescription);
reader.Close();
response.Close();
}
}
}
I have an ASP.NET MVC2 application in development and I am having problems rendering a .pdf file from our production server.
On my Visual Studio 2010 integrated development server everything works fine, but after I publish the application to the production server, it breaks. It does not throw any exceptions or errors of any kind, it simply does not show the file.
Here's my function for displaying the PDF document:
public static void PrintExt(byte[] FileToShow, String TempFileName,
String Extension)
{
String ReportPath = Path.GetTempFileName() + '.' + Extension;
BinaryWriter bwriter =
new BinaryWriter(System.IO.File.Open(ReportPath, FileMode.Create));
bwriter.Write(FileToShow);
bwriter.Close();
System.Diagnostics.Process p = new System.Diagnostics.Process();
p.StartInfo.FileName = ReportPath;
p.StartInfo.UseShellExecute = true;
p.Start();
}
My production server is running Windows Server 2008 and IIS 7.
You cannot expect opening the default program associated with PDF file browsing on the server. Try returning the file into the response stream which will effectively open it on the client machine:
public ActionResult ShowPdf()
{
byte[] fileToShow = FetchPdfFile();
return File(fileToShow, "application/pdf", "report.pdf");
}
And now navigate to /somecontroller/showPdf. If you want the PDF opening inside the browser instead of showing the download dialog you may try adding the following to the controller action before returning:
Response.AddHeader("Content-Disposition", "attachment; filename=report.pdf");
i suggest you use ASP.NET MVC FileResult Class to display the PDF.
see http://msdn.microsoft.com/en-us/library/system.web.mvc.fileresult.aspx
your code open`s the PDF on the webserver.
Here's how I did it.
public ActionResult PrintPDF(byte[] FileToShow, String TempFileName, String Extension)
{
String ReportPath = Path.GetTempFileName() + '.' + Extension;
BinaryWriter bwriter = new BinaryWriter(System.IO.File.Open(ReportPath, FileMode.Create));
bwriter.Write(FileToShow);
bwriter.Close();
return base.File(FileToShow, "application/pdf");
}
Thank you all for your efforts. Solution I used is the most similar to the Darin's one (almost the same, but his is prettier :D), so I will accept his solution.
Vote up for all of you folks (both for answers and comments)
Thanks