I maintain a vb.net website. A button on a page shows an AjaxControlToolkit.dll ModalPopupExtender. When I click the button, the page reloads, but no popup appears.
My tests below cover the scenarios I can think of. Please help me diagnose and fix.
This ModalPopupExtender succeeded in the past. The error might have started when we moved to a new server, or when we implemented https, or a browser update, or at some other time since then.
Tried Chrome (latest) and Firefox.
I RDPed into the server and opened the page in Chrome there. ModalPopupExtender succeeded. Same Chrome version as my PC. So, unlikely to be a code issue.
A different page on the same site uses ModalPopupExtender successfully. So, unlikely to be local PC settings.
I put lines of test code immediately before and after ModalPopupExtender.Show(). Both succeed.
Aha - found it!
Solution
The ASPX/HTML referred to http://ajax.googleapis.com. Changing the references to https made ModalPopupExtender.Show() work correctly for me.
Explanation/Diagnosis (if you can clarify further, please comment)
When I checked the html served to my browser, I noticed it defined a javascript function called fn(). The definition for fn() didn't appear in the html served to the server's browser. After the https change, fn() no longer appears in the html I receive. The other page, where ModalPopupExtender worked, didn't have any reference to googleapis.com.
I assume that using http instead of https caused ajax.googleapis.com to provide fn() and that fn() in some way interfered with the normal operation of my ModalPopupExtender.
Here's the fn() definition: (function {var fn = function() {Sys.Extended.UI.ModalPopupBehavior.invokeViaServer('ctl00_cphContent_ModalPopupExtenderConfirm', true); Sys.Application.remove_load(fn);};Sys.Application.add_load(fn);})();
Note: the http also included another javascript function related to the ModalPopupExtender. But there was a similar one on the working page, and in the working version served to the server's browser, and in my fixed version. So, I assume that function is correct.
Related
My problem, in a nutshell, is the following:
I use Privoxy to set up a whitelist of sites in Raspbian Jessie on Chromium. I have Chromium start on boot with the following snippet in lxsession/LXDE-pi/autostart:
#privoxy
#chromium --incognito --kiosk --proxy-server=127.0.0.1:8118
This does work as intended, with every site except the ones I specify blacklisted.
Now I edited /privoxy/templates/blocked so that instead of the usual site it will give me a redirect to a certain site should a link be opened that is not on the whitelist:
<!DOCTYPE html>
(Stuff happens)
Please go back to this site.
example.com being one of the sites I whitelisted. The problem is, it simply redirects me to the "blocked" page again, making me stuck in a loop. Does anyone have a clue why this would be and how I could work around it? I tried using
window.history.back()
however it doesn't seem to work either.
I use Kiosk mode because I want to use this in a context where entereing URL-adresses is not desired, just to clarify my Chromium-call.
Well, I solved it, at least partially. Turns out that I need to add http:// in front of the URL, since it gets added to the already existing URL otherwise. Which is fair, but a bit awkward for me to admit. HTML isn't exactly my forté. Marking it as solved and keeping it, just in case somebody stumbles upon a similar problem.
GWT is used and the application is deployed on WebLogic using HTTPS.
The performance is poor and with F12 Developer Tools, we could see that blank.html is downloaded multiple times. This is clearly related to GWT but we have not been able to figure out why.
The following is from javascript:
defineSeed(2613, 2614, makeCastMap([Q$BaseModelData, Q$ModelData, Q$Theme, Q$Serializable]), Slate_0);
var SLATE;
function $clinit_GXT(){
$clinit_GXT = nullMethod;
IMAGES = new XImages_generatedBundle_0;
MESSAGES = new XMessages__0;
SSL_SECURE_URL = getModuleBaseURL() + 'blank.html';
}
This is from GWT.java:
/**
* URL to a blank file used by GXT when in secure mode for iframe src to
* prevent the IE insecure content. Default value is 'blank.html'.
*/
public static String SSL_SECURE_URL = GWT.getModuleBaseURL() + "blank.html";
Does anyone know under what circumstances blank.html is called?
Thanks!
This is from GWT.java:
This is actually from GXT.java.
This is used in a few cases when creating an <iframe> element, so that IE won't give errors if your site is hosted from SSL. I can actually only find one case (as of GXT 3.1.1) which uses this, in Layer.java. Only IE pages loaded from https urls will make use of this.
The Layer class uses this as a "shim", a way to prop up some DOM elements above overs, and work around some browser bugs (typically plugin or iframe related). Menus and popup dialogs use this to ensure that they don't appear "underneath" content that they should be "above".
This file is very small - just enough HTML to convince IE than the iframe has correctly loaded, and no more. It never changes, and should load nearly instantly.
As far as performance goes, this should only happen when a Menu or Window/Dialog/Tooltip is shown - these shouldn't be happening on app startup usually, at least not more than a window or two. Additionally, the browser should recognize that it is loading the same element and cache it correctly, and not load it multiple times (though it might be listed several times as hitting the cache). If the server has instructed the browser to never cache the file, that is something you should look at changing.
In short, this is very unlikely to be the cause of any performance issues, at least in GXT itself. If somehow you have the shim enabled on every single widget in your project, this should not be required. If the file is loading slowly, something may be very wrong with your server configuration.
For reference, here is the entire file:
<html></html>
Help me Stack Over-flow-nobi, you're my only hope.
I see lots of posts and questions about the 'Unexpected Token ILLEGAL' issue in chrome, but haven't found a solution for my own variety of the problem.
I'm building a Facebook tab that needs to be served https (Facebook policy). It's a page built in WordPress and I'm using the WordPress HTTPS plugin to force my particular page to render with HTTPS.
When I test with regular old HTTP, everything is fine (except for the "unsecure content" warnings, but that's another issue).
When I test with HTTPS, when the page loads the first time, it's okay, but if I hit REFRESH, then I get the ILLEGAL error. It's inconsistent - sometimes it balks on a different file, but something bad happens almost every time.
The page is at http://www.facebook.com/pages/TbkCreative-Leavens-VW-Beta/178151292291863?sk=app_363900450303117
screen shot of error on Chrome console http://tbkcreative.com/sandbox/leavens/files/2012/01/unexpected_token.png
Any insight? I'm banging my head against the wall on this one.
Thanks
Trevor
File this one under the red herrings and wild goose chases.
I'm using a plugin called GD Star Rating on this app. It includes a dynamic CSS file. It was being loaded in with:
<link rel='stylesheet' id='gdsr_style_main-css' href='https://tbkcreative.com/sandbox/leavens/wp-content/plugins/gd-star-rating/css/gdsr.css.php?t=1327595625&s=a10i10m20k20c05r05%23121620243046%23121620243240%23s1pchristmas%23s1pcrystal%23s1pdarkness%23s1poxygen%23s1goxygen_gif%23s1pplain%23s1ppumpkin%23s1psoft%23s1pstarrating%23s1pstarscape%23t1pclassical%23t1pstarrating%23t1gstarrating_gif%23lsgflower&o=off&ver=1.9.10' type='text/css' media='all' />
If I got rid of all of those query arguments, the problem went away. Ditto for if I just got rid of the file altogether. I didn't dig deeper to figure out exactly what was causing the issue, as I was just relieved to figure it out.
I don't understand why this file was causing javascript files down the pipe to be loaded incorrectly. I don't understand why it only happened in Chrome, accessing the page with HTTPS and when I hit refresh. Weird.
But fixed.
I am hosting my pages on my doamain. I put the following info. When I go to view the app it shows 405 Method Not Allowed..Not sure what I am doing wrong.
*
The first page load a APP makes is a POST request.
Seems your server could be rejecting them.
Its worth checking the server side error log for further information.
Indeed, it will most probably be a setting on your server. I had the same problem, my server didn't allow POST method on .html pages, changed my canvas page source to .php and all works fine now.
If you can look at your apache logs, it will provide a more clear error that we can help you debug with. Though a 405 error typically signifies a problem with the server and usually stems for a POST request.
I have made the mistake 2 times of creating my site in html instead of using a scripting extension. For example, if you are running on a Windows server and coding in Visual Studio, it is tempting to just create .htm or .html files. However, most web servers will not allow a POST operation to these pages. Instead, create .aspx pages, which will still allow you to use the same exact static HTML and JavaScript. This solved my problem in both cases.
I am trying to download a file from server. The normal GWT RPC call doesnot allow me to do that, and hence I wrote a servlet to do that job for me. From the client side, I am creating a Frame object, and I set the servlet URL in it, and add that frame Object in my root panel.
When I execute this in IE, a window pops up asking for Save/Open file.
But when I execute the same in a Firefox or a Google Chrome browser, nothing is happing.
I am not getting any request on my servlet/server side.
Here is a slice of the code :-
String servletUrl = "http://localhost:13080/Browser/ui/dataExportServlet?level=ZERO";
Frame frame = new Frame(servletUrl);
frame.setVisible(false);
RootPanel.get().add(frame);
So, can someone please help me out.
This might be related to same origin policy.
Are both servlet and webapp running on port 13080?
If they differ, SOP might fail this.
If I understand correctly, IE has a more relaxed policy so it might work there but not in chrome.
See http://en.wikipedia.org/wiki/Same_origin_policy and Can I disable SOP (Same Origin Policy) on any browser for development?
In Chrome, you can use the Developer Tools (CTRL + SHIFT + I) to check if the IFrame is being added to the HTML, and if the frame's source is being set properly. You should also be able to see what content has been loaded into the iframe.
Alternately, set a breakpoint in your servlet to see if the iframe is being hit at all from Chrome.
I got the solution for this issue.
I removed the frames and added the following code :-
com.google.gwt.user.client.Window.open(url, "CSVDownload", "");
Now, this opens a new browser window, and then I get the pop-up to open/save the server side file in all 3 web-browsers. (IE, Mozilla FireFox, Chrome).
Thanks a lot!!!