Automatic prompting for file download

I am using a File Download Servlet. Theres a setting in IE under Securiy Settings --> Downloads--->Automatic Prompting for File Downloads.If I have this disabled, I am able to download the file.If its enabled, I am unable to download the file successfully. Anyone have faced this problem before?

Here is the result.I used your code and it worked fine with IE setting Enabled. But when I tried to access the download servlet after opening a new window, it doesnt download the file.

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JSF error message: Automatic prompting for file download

This is a weird problem. I have a JSF application wherin I popup a new window on a submit button.
The window opens a test.jsf page that redirects the output to a servlet1.
Servlet then based on some parameters does a sendRedirectI() to different servlets out of context.
Now the issue is that when the output is redirected to out of context servlet, that returns a file download.
If in IE browser, if one does not do a setting of "Automatic prompting for file download", this window that I had opened on submit buttton vanishes in a jiffy. If the IE setting is done, it shows the file download correctly.
I would want to show the user some kind of message by which he/she understands that this IE setting has to be done.
I have tried several ways:
1. Javascript: window.onbeforeunload on the test.jsf so that when the window unloads i can show some message. But since test.jsf forwards to servlet1, the html page generated does not show my script.
2. I also tried checking if some windows registry can help me understand the setting.
3. I tried writing in response object the javascript and then redirecting it to servlet out of context. But I guess sendRedirect() does a new request, so this did not help.
Can anyone help? I am not sure if I am able to explain my problem correctly.
Yani

Here is the result.I used your code and it worked fine with IE setting Enabled. But when I tried to access the download servlet after opening a new window, it doesnt download the file.

Java WebDynpro's and IE security settings for file download

We have a EP 7.0 SP13 environment on which we have deployed a number of own developed java webdynpro's. In some of these webdynpro's we provide the file download functionality. The portal and webdynpro's are used by both internal personnel and external customers.
On the other hand the default Internet security settings for Internet Explorer, disable "Automatic prompting for file downloads".
When a user, with these default security settings active, tries to use our webdynpro's file download functionality, the screen seems to refreshes but no file download starts. When (s)he retries, the session runs for some minutes and gives following error message:
"com.sap.tc.webdynpro.services.session.LockException: Thread SAPEngine_Application_Thread[impl:3]_20 failed to acquire exclusive lock on client session ClientSession".
This behavior is explained in SAPNote 1234847. Webdynpro provides a single-thread module, meaning a user session is blocked for the during of the request. And because the previous file download isn't yet completed the new try can't start.
Issue now, although the users IE settings allow file downloads and don't block pop up's, he can't download the file and even isn't made aware of the cause of the failure.
How can we avoid this issue, without having to communicate the
application requires specific browser settings?

Welcome to the Apple Support Communities
See > http://support.apple.com/kb/HT5290
You can install the program using different ways:
1. Right-click the application installer and choose Open.
2. Go to System Preferences > Security and Privacy and select Anywhere in Allow applications downloaded from

Peformance Turning for File Download / Upload with Enabled SharePoint Audit

Greetings all, may I ask your help for Peformance Issues?
Background:
I tried to create a ASP.NET Web Page to download/upload/list SharePoint file and deployed to IIS website in same application server (will NOT use web part as some users are NOT allowed to direct access confidential workspace)
Besides, for Audit Log record purpose, the page will impersonate (without password) the logged in user:
SPUserToken userToken = web.AllUsers[user].UserToken;
SPSite s = new SPSite(siteStr, userToken);
For File Listing, the web service can provide fast response, and we are using service A/C for connection (as no auting for listing, but require audit for file download upload)
Several implemeation options tested for File Downloiad / Upload, but issues occured and finding listed below:
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How can I download/upload file without open SPSite object (using SharePoint object model, but user token should be kept to allow SHarePoint identifiy user actions. e.g. Updated by Tom, NOT system administrator)?
2) SharePoint default web service
For file download, I tried to use SharePoint Web Service for download file, it's quick but how can SharePoint record the audit log to downloaded user, and not service A/C? ( e.g. View by Tom, NOT system administrator)
With Windows SSO solution, please note system should NOT prompt to ask user password for use impersonation
3) HTTP Request API (for file download)
As mentioned in point 2, if the system cannot get password from user, SharePoint also recorded service A/C in audit log... ><
Thank you for your kine attention.
.NET Beginner 3.5

Thank you for prompt response, please find my reply with Underline:
Hi,
Maybe I'm not quite clear about the architecture you have now.
Is your asp.net application deployed in separate IIS site but in the same physical server as SharePoint?
Yes
"we are using service A/C for connection", can you please explain the 'A/C'?
Domain User, Local Admin and also SharePoint Service Admin A/C
Opening SPSite is relatively slower but shouldn't take 50 sec. However it depends on your server hardware configuration. You should meet the minimum hardware requirements for SharePoint.
Assigned double resources based on minimum hardware requirements.
For details, 50s is the load test result. But for other SharePoint operation, it takes around/under 3s reponse time.
Are you using SharePoint Audit log? Exactly If so then why don't you just put the hyperlink to the documents in your asp.net page. User maybe have to login once in SharePoint site but
it depends on your security architecture. For example if both of your sites in local intranet and you are using windows integrated authentication, SSO will work automatically User is NOT allowed
to access SharePoint site/server (not implemented for sepreate server yet, as performance issues occured for
separate site in same server) directly from Internet, the
middle server with web interface created for user request.
Whatever I understands gives me the feeling that you download the file using HTTPWebRequest C# class. However regarding security it depends on how authentication is setup in asp.net web site and in sharepoint. If both site uses windows integrated security
and they are in the same server, you can use the following code snippet:
using (WebClient webClient = new WebClient())
webClient.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
webClient.DownloadFile("file ur in sharepoint", "download directory");
Thanks, will try and reply later
But still, as I've mentioned, not quite clear about the whole architecture.
A) Request Handling
1) User use browser to request file listing and/or download file (hereafter called: File Download Request) from custom ASP.NET page (Let's say In Server 1, IIS 1)
2) ASP.NET　page or File Handler ashx (Server 1, IIS 1) call custom web service, SharePoint deault/OOTB web service or using SharePoint Object Model to access SharePoint Document Library (in Server 1,
IIS 2)
3) Both SharePoint and IIS Web Site
(Server 1, IIS 1 & IIS2) using the same service A/C
4) The web service , File Handler return file obeject to IIS1
5) IIS 1 reply File Download Request to user
B) Application Architecture (In testing environment)
1) no load balancing
2) 1 DB server (Server 2)
3) 1 Application Server (with IIS 1 - ASP.NET, IIS 2, SharePoint Web Site with default SharePoint Web Service, IIS 3 SharePoint Admin Site & IIS 4 Custom SharePoint Web Service)
4) Sepreate AD Server (Server 3)
Thanks,
Sohel Rana
http://ranaictiu-technicalblog.blogspot.com
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When I open itunes on my laptop, how do i stop itunes from automatically prompting for my apple account info?

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Problems with signed Applet for File Download under JRE 1.4 (works with 1.3

Dear all,
i encountered a very strange behaviour with JRE 1.4x. A signed applet used for file download worked on all platforms (Windows NT, 2000 and XP wth/wthout SP...) until I installed JRE 1.4.x (1.4.1 or 1.4.2)
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As I said, it works fine under jre 1.3.x
The relevant code is below: byte bt = dis.readByte(); causes the error
try{
// Get URL from Server
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sThisURLFile = uFile.getFile();
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int iDotPos = sFilenameOnly.lastIndexOf(".");
String sExt;
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sExt = "";
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long nByte = 0;
int iCnt = 0;
iFilesizeDone ++;
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try{
sErrPs = "00";
byte bt = dis.readByte();
sErrPs = "01";
dos.writeByte(bt);
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nByte++;
iFilesizeDone ++;
iCnt ++;
if(iCnt >= 10240) {
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iCnt = 0;
line = "Progress: Total: " + ((iFilesizeDone*100)/iFilesizeTotal) + " perc, " + iFilesizeTotal/1024 +" kbytes" ;
labLine.setText(line);
//dos.flush(); // improves Client performance (Agent-Call!)
dis.close();
dos.close();
}// End try
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catch (SecurityException se)
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catch (IOException ioe)
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perhaps they've changed something with the file blocking.
btw, you should try to use something like this
DataInputStream dis = new DataInputStream(is);
byte[] buffer=new byte[8192];
int numBytesRead;
while ( dis.available()>0 ) {
numBytesRead = dis.read(buffer);
}

Any way to set up iWeb pages for file download / sharing?

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DownloadServlet or alternative method for file download

I have searched the forums for this topic and have seen one other posting from someone having the same problem (with no response). I can not get the oracle.jsp.webutil.fileaccess.DownloadServlet to fully function. Using the file access example code that is installed with iAS and following the instructions in the manual "Oracle Application Server Containers for J2EE JSP Tag Libraries and Utilities Reference 10g (9.0.4)" I can get the file upload to work just fine (both to a file and to the database). However with the file download it stops short of working. It will access the DownloadServlet and list the files that have been uploaded, but when you try to follow the link that it creates you get a "400 Bad Request"
If you look at the URL it creates I see what I think is a problem
Here is a clip of code from dbBeanDownloadExample.jsp that creates the URL
The following files were found:
<% Enumeration fileNames = dbean.getFileNames();
while (fileNames.hasMoreElements()) {
String name = (String)fileNames.nextElement();
%>
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Larry, the DownloadServlet certainly worked at some point of time as ensured by the automated tests. It should work all the time, I believe, unless......
The problem I see is the fileprefix (from the upload)
"beanexample" and the filename "fields.txt" is appended to > the end of the servlet "download", while the rest of the
parameters to the DownloadServlet are passed in the proper > manner "srcType=database". I have been unable to find any
documentation on the DownloadServlet so I don't know if
there are setters for the fileprefix or the filename.A nice observation. That is the root cause of the problem, I believe. Actually, the documentation is right there in the example dbBeanDownloadExample.jsp. You should use
  String name = (String)fileNames.nextElement()).replace('\\','/');
as in the example instead of
  String name = (String)fileNames.nextElement();
Well, I will check if this point of changing '\' to '/' have been made explicitly in the documentation. That kind s of tiny point is sometimes really a killer.
Hope this helps.

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Our server team initiates the download.Then you're out of luck. You can monitor the file size change over time, but it might as well be an incomplete or aborted download. I wouldn't know if a file that's written to will be blocked for reading. Might be, might not be. I'd say not, given my experience.

Automatic prompting for file download

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