With help of xmlHttpRequest I make a server query.
After that the server is redirecting to another page (e.g. "http://site.com/index.html;var=123")
The question is - how can I get full url(side.com/index.html;var...)?
The code is executed with Adobe Air.
thanks
I presume you mean, you are making an xmlHttpRequest inside the HTML control of Adobe Air. AIR provides no functionality on trapping calls originating from the web page that are not a part of the user action. Thus, your AJAX query will move the same way as in a browser. The only luck you may have is with JavaScript to trap the response of the call and use it.
On a side note, you may try loading the same URL with URLLoader/URLStream using a HEAD request in Adobe AIR, with URLRequest.followRedirects set to false. Then listen to HTTPStatusEvent and read the Location response header. HTH.
Related
Regarding this question and also many documents have stated that sending a PUT request directly via form in browser is impossible due to security reason.
However, What I am seeing in Backbone is that it could still send a direct PUT request via browser without a workaround like adding a hidden form field.
And they're confusing to me. Is there anything that I'm missing here?
A form can only send a GET or a POST request, as set in the method attribute.
However, Backbone delegates its requests to jQuery.ajax by default (or whatever you want via Backbone.ajax) which itself wraps XMLHttpRequest, an object that can send PUT/DELETE/PATCH requests.
From https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
XMLHttpRequest is a JavaScript object that was designed by Microsoft
and adopted by Mozilla, Apple, and Google. It's now being standardized
in the W3C. It provides an easy way to retrieve data from a URL
without having to do a full page refresh. A Web page can update just a
part of the page without disrupting what the user is doing.
XMLHttpRequest is used heavily in AJAX programming.
many documents have stated that sending a PUT request directly via browser is impossible due to security reason
Citation please.
Backbone sends a PUT just like it sends any other request, with jQuery,
Backbone.ajax({
type: 'PUT'
...
});
It is just some server side langauges,like PHP, that have problems with receiving a PUT request.
The hidden form field is used when posting from a <form>. Backbone uses javascript.
Regarding to a static link on a web page, the browser will issue GET or POST request to the web site, depending on whether a form of parameters attached.
However, I want the browser to issue a PUT request for that link, how can I do that? I know that Ajax could do it, but I don't want to use Ajax.
I want the browser to issue a PUT request for that link
it seems that PUT and DELETE are currently unsupported in html forms, according to this submission to the w3.
I know that Ajax could do it
Not always true. Because PUT and DELETE are at times unsupported by some browsers, ajax cannot consume them without making a dummy param to trigger a real PUT or DELETE server side, which gives the illusion of full HTTP support by ajax.
I want to silently check for Session existence without Posting back page by using AJAX Timer and AsyncPostBack Trigger.
Now, I would like to know is there anyway to silently check whether ASP.NET C# if (Session["email"] = null) { Response.Redirect("Logout.aspx"); } something of this kind to check for every 10 seconds without Posting Back Page and without using AJAX by using something like jQuery or any other technology that is supported by .NET?
The server can push to a loaded page if you use an asynchronous controller with a partial view which is loading every set amount of time.
http://msdn.microsoft.com/en-us/library/ee728598.aspx
there is only one way to get to the server. send a request. that can be a "standard" request where the browser will refresh the screen when a response is sent. the other type of request is a ajax request. the difference is an ajax request contains a header to inform the server it's an ajax request. when the browser receives the response it will allow the developer to decide what to do with the response. either way a full request/response exchange takes place the only difference is how the browser handles the request.
jquery is a javascript library that includes functionality to make ajax request easier to setup.
to answer you question no, there is no way around making a request.
What happens from the point an HTTP request is received on a TCP/IP port up until the Page fires the On_Load event?
The below link should give you detailed explanation about the asp.net application life cycle process.
http://msdn.microsoft.com/en-us/library/ms178473.aspx
Brifely to say.
Request is received by the server, the server determines the ISAPI extension to handle the request based on filename extension.
In case this is first request, it will create an app domain for maintaining isolation with this and other applications running.
then it creates hosting environment which will also create the objects like HttpContext, HttpRequest and HttpResponse.
After this the HTTPApplication object is created .
Afterwards the events in the global.asax which is the class inherited from the HTTPApplication object fires in the order defined in the link above.
The browser recieves the http response
The browser parses http headers and starts reading the HTTP content.
Parsing first the <head> section and parsing this, putting external resources on the get queue (first, css then javascript, ideally)
Parsing the <body> content and drawing elements on the viewport.
When the DOM is drawed to screen and is completely rendered. the page fires the on_load event.
When the HTTP request reaches the server, the server will then prepare the necessary file that is requested by the client and send it to the client. The client will then receive the entire content of the HTML page. Note that this is just the HTML and the browser still needs to make additional requests to the server for images and other types of files like applets if necessary.
Finally, to answer your question, it'll have to depend on where you put the onload event. If it's for the then this will be invoked when the body has completed loading. If it's in other node items, as we call it in JavaScript, then it'll be on the complete loading of that particular item.
Hope it helps :)
Cheers!
I want to be able to send a simple http post from my firefox extension to my ASP.NET application. From the client side, I have used XMLHTTPRequest by sending the post with the url: http://localhost:15227 which is the url on my ASP.NET app.
What do I need to do to receive a remote request from ASP.NET please?
thanks
This page from Apple has a pretty good example of how to send/receive data using a raw XmlHttpReqeust object (as opposed to a JavaScript library).
You can get the value of the response from the responseText property once you know the response came back successfully. Specifically take a look at where the processReqChange function is defined, your code will go in there (or your equivalent of that function).
If you want to explore JavaScript frameworks, take a look at how much less code you need if you use jQuery get (for example).