I am using WWW::Mechanize::Firefox along with MozRepl plugin in Firefox. The code works properly to fetch content from sites by sending them an HTTP GET request.
I am going through a list of URLs and sending an HTTP GET Request to each of them.
However, if the request hangs on a particular URL, it keeps waiting.
Please note that I am referring to cases where a part of the web page content is loaded while some of the content is still pending. It happens in cases where a web page loads a lot of content from third party sites and if one of the resources (an image for instance) could not be loaded, the browser keeps waiting for it.
I want the request to timeout after 'n' seconds so that I can read the next URL from the list and continue with the code execution.
In WWW::Mechanize perl module, the constructor supported the timeout option as shown below:
$mech=WWW::Mechanize->new(timeout => 10);
However, I could not find a similar option in the documentation for the Perl Module, WWW::Mechanize::Firefox here:
http://metacpan.org/pod/WWW::Mechanize::Firefox
I tried this:
$mech=WWW::Mechanize::Firefox->new(timeout => 10);
But I think it does not work as there are still some sites for which the request hangs.
WWW::Mechanize::Firefox uses Mozrepl to connect with Firefox browser, so you don't need to declare timeout parameter, because Firefox will wait for page load.
If you want to check if site is really fully loaded, you should check that the element that you want (e.g. div) is present:
while (!$mech->is_visible( xpath => '//div[#class="myDivClassAtHtml"]')) {
sleep 1;
};
# do something with your page
Related
I'm using FlowRouter. If I start on the homepage everything works well. I can work through the routes (change the pages) without problem. However, if I hit refresh in the browser, I get a series of errors. My url looks like this:
/story/586d536e34821281735b53a4
The ID is being returned in console under the following method:
Tracker.nonreactive(function(){
I think the subscription is being completed, so I'm a little confused as to why reloading a url is different than loading from the home page.
What am I not understanding here?
Reloading a url will make a HTTP request to server to get all the application source. Whereas navigating to a route from another one does not make any HTTP requests to get the application source because they are already available (they were loaded from the previous route), in this case the router will just get the appropriate content and render on the page. This is normal behaviour for Meteor apps and all other single-page apps
The error you encounter is because your data is not yet available on client, to fix it you could simple use a placeholder if the value is undefined.
I do have a list of files on page and next each file there is a link says delete, simply user by clicking the delete link it passes the file name on to the function on the same script then it deletes the file from server and it says on the same page, any idea?
#some other stuff goes here such list of files
print "<TD><a onclick='deleteFile()' href='#'>delete</a> </td>";
sub deleteFile()
{
unlink ($file);
}
I also tried pure cgi perl and when I click delete link it prints error "Internal Error" but when I look for the file to see if it has been delete or not then the file actually deleted so there is no permission issue here else it wouldn't delete or unlink the file, here is what changed to:
print "<a href='../cgi-bin/deleteFile.cgi?param1=$dir¶m2=$file'>delete</a>";
here what I have in deleteFile.cgi I get both param1 & 2 and use unlike like below
unlink($location);
You really haven't tried hard enough to find your own solution here. I will give you some pointers ...
The onclick attribute in the HTML will trigger Javascript to be run in the browser (there are better ways to make a click event run Javascript code).
None of the Perl code in your CGI script will run unless the browser sends a request to the CGI script on the server. Things that could generate a request include:
the user clicking a link with an href that points to the CGI script (perhaps with the file pathname in a querystring parameter)
the user clicking a submit button in a form with an action that points to the CGI script (perhaps with the file pathname in a hidden form field)
some Javascript code in the browser that issues an AJAX request to the CGI script (with the file pathname as a POST parameter)
Clicking a link would result in a GET request - it is generally considered bad practice to run code that changes the state of the server (e.g.: deleting a file) is response to a GET request.
A form submission or an AJAX request can cause a POST request. You could even explicitly use a DELETE request via AJAX. These are more appropriate request methods to use for mutating server state.
Even when you get your code working, it will only be able to delete files in directories that the web server has write access to. Web servers are not generally configured with write access to any directories by default.
The problem was after deleting there was no redirect so after adding redirect page then it worked like a charm..
unlink glob ($file);
print redirect(-url=>'http://main.cgi');
thanks
I am working on existing code that uses CGI::FormBuilder, and I've gone through all of the documentation to see how this might work, and I'm not 100% convinced that it will. The code has several free-form fields and 3 buttons: Update, Cancel and Test. The test button sends an email using settings entered into the fields.
In the JS for the form, I use an ajax call when "Test" is clicked so that the perl code in the form executes. The update and cancel buttons return like the form is supposed to when it is submitted. The reason for this is that when the test email is sent, I don't want the user to be taken to a returned page, but remain on the form with the values intact, so that if the values are correct, the user does not have to re-enter them when they want to update the actual values (which updates the values in my DB). Apparently, since the form isn't being "submitted," the values that it attempts to use on this "test" are the values loaded into the form with the page opens - it isn't using the values the user input before hitting the test button. Is there a way to make this happen?
Long question short: with CGI::FormBuilder, can I get the values currently in the fields via PERL without submitting the page? Thanks!
Short answer: yes.
Medium answer: Yes. You can use javascript in the page to send information to your server side application.
Long answer:
You seem to have some confusion about how server and client side code interact with webpages. This is pretty common. Many people expect their to be some kind of communication between the rendered page and the program that generated it. AJAX and related technologies blur the lines here and make things more confusing.
Here's a timeline of a simple, old-school CGI form:
Client requests page. Server receives page request. Server dispatches
to CGI script.
Server executes CGI script.
Server sends result of CGI script to client.
Client renders script results.
User fills out form.
User clicks "Submit". Client requests page with parameter information (details vary with type of request, form configuration).'
Server receives page request.
Server dispatches to CGI script.
Server executes CGI script. Server sends result of CGI script to client.
Client renders script results.
Each message from the Client is handled separately.
AJAX lets you send messages to the server and get the response without clearing the currently loaded page.
So, just throw some javascript code into the html, and set up an onModify handler that will make an AJAX request and pass data back to the server. The AJAX request is just another HTTP request, just like those above, but it runs in the backgound. All you need to do is catch the submitted data and respond. Your javascript needs to catch the response and do something with it.
Answer to the short question is "No".
Answer to the long question is "Yes".
All you need to have two "Submit" buttons: "Submit" and "Test".
The submit by Test will send form to the CGI and CGI will only validate the fields' values and render same form with same values back and message if there is an error in fields.
I am working in perl with Selenium RC, server version 2.19.0-b09 and I cannot figure out whether it is even possible to redirect to an external URL and come back to my application. I am trying to test Facebook OAuth in my application, which means I have to go to Facebook and come back to my app.
use Test::WWW::Selenium::Catalyst 'MyApp', -selenium_args => 'injectProxyMode -trustAllSSLCertificates -debug -log /home/me/browserlog.txt -firefoxProfileTemplate /home/me/.mozilla/firefox/SeleniumUser.default/';
my $selenium = Test::WWW::Selenium::Catalyst->start({
browser => '*chrome',
});
The reason I think this is possible at all is because a custom Firefox profile and the -injectProxyMode, *chrome browser and -trustAllSSLCertificates options enable me to post to and see all the redirects in my debug log, but my Remote Control window always disappears after the redirects. I can see the PROXY URL to which Facebook is trying to send me back, e.g., a URL on my own base domain. But it looks like there is no window for it to return to. In multiWindow mode I am left with my application in a Firefox window. In singleWindow mode my tests just end and all the windows close.
I have tried both -singleWindow and -multiWindow mode. I have gotten the list of windows after I make my post to https://www.facebook.com:443/login.php... and before all the redirects. I see a single window that is never available to select_window, and it always disappears on the second iteration if I run get_all_window_names in in a while loop: a window with a name like "_e_0RWG".
So, how could I conceivably do what I am trying to accomplish with Selenium? It seems so near and yet so far.
I'm working on a GWT application.
I wish to debug the client side Java code.
I start up the application from Eclipse in debug mode.
The app starts in the browser with the gwt.codesvr= set correctly.
I can debug at this stage.
The app then redirects to the a different jsp page.
The gwt.codesvr= parameter in the URL is dropped.
The app uses History.newItem("xx") quite a bit (as described in http://code.google.com/webtoolkit/articles/mvp-architecture.html#history)
The problem is that I can't now debug the client side code.. as the
gwt.codesvr= parameter has been dropped from the URL.
When I attempt to add it back in, the app History handling code runs,
and the parametes is immediately dropped again.
I checked this on another PC and the same behaviour occurs.
I checked in Chrome and IE8 and the same..
What is the solution ?
Thanks A million,
Fergal.
History.newItem() keeps the query string intact (in this case, the ?gwt.codesvr=... part), so these calls shouldn't be the problem here.
You say, that the app redirects to a different jsp page. Find out, how it does that - it may use something like Window.Location.replace(newURL). Make sure, that newURL contains the gwt.codesvr=... part in its query string.
If the server performs a redirect itself (e.g. if it redirects after a POST request), then make sure, that the server adds the query string in the redirect URL. (You will probably have to submit your codeserver URL with the POST parameters in this case - because this is a client-side concept, and the server cannot simply guess it.)