I am using django and making some ajax request to server. As the url is visible in javascript someone could easily copy that and start making request via url bar. Is there any way in django that we can distinguish that the coming request is sent by ajax not a regular browser reqeust.
You can use a tag in your ajax,and in code check request from
Yes you can use
HttpRequest.is_ajax()
as in documentation
https://docs.djangoproject.com/en/2.2/ref/request-response/#django.http.HttpRequest.is_ajax
Related
I am trying to make a scraper for a page of a supermarket. I noticed that this supermarket make API HTTP calls via AJAX, and if I enter to Inspect > Network then I can see the request headers of the calls I need.
Inside the requests headers there is an X-Token. If I use this X-Token with the URL via Postman I can get all the info in JSON format, which is better than scraping the web.
The problem is that this X-Token expires (I think, it still works). Is there any possibility to make a call to the page and "intercept" this API call in order to retrieve this X-Token and use it for the next custom requests?
I'am using Ruby on Rails :)
I am trying to post to a server listening on a different port, but FireFox insists on sending an OPTIONS request because apparently I am not using the proper URL. How can I POST to localhost:8161 without FireFox thinking the request might be cross domain and sending OPTIONS?
Here you have an answer:
How do I send a cross-domain POST request via JavaScript?
It is not easy to detail it in a better way.
You can add iframe whose src contains url with different port
I am trying to use ajax in my spring mvc application. When I try a url (post/get) which is secured and needs authentication, the response is the html of login page as it is redirected behind the scenes.
What is the best approach to overcome this issue?
First, I would avoid displaying Ajax links to URLs needing authentication if the user is not authenticated, if possible.
If not always possible, your login page could be returned with a specific HTTP response code, (or any other way to distinguish it from a normal response) and your JavaScript callback could replace the entire body of the current page with the HTML received if this response code is received. Most AJAX libraries come with a way to define a handler to all the AJAX requests. Such a global handler could be used here.
The login page could also be adapted to only return a status code in case of an AJAX request, and the JavaScript code would then redirect to the login page (without using AJAX) if this status code is received.
I may not have explained the issue well. So I did not get the right response. However the response from JB Nizet contained some other points. So thank you.
I could solve the issue after coming back to this issue after some time, so
I posted about this on my blog.
I hope it is useful.
will any webserver [IIS possibly] know whether a request is an AJAX request or a Normal one.
If you are using native XmlHttpRequests then there is no difference between this request and once generated by visiting a page or submitting a form. If you use jQuery to create the AJAX request then is adds a request header X-Requested-With: XMLHttpRequest. This header could be used to distinguish AJAX and non-AJAX requests.
Some (most?) frameworks can send a custom header, but, really, an ajax request is just the same as a "normal" request from the point of view of the server.
If you use curl, wget, telnet, or a program you write yourself, then the web server handles the request the same way - at the end of the day, it's all HTTP.
The easiest way for the receiving page to 'know' would be to send a query string parameter. This isn't 100% safe though.
Firebug can show you what is being sent to the server from both types of requests, try it out.
Possibly, it is not the webserver that can distinguish, but the server side code might be able to distinguish. If you are talking about ASP.NET and AJAX, then ScriptManager.IsInAsyncPostBack can be used to find whether a postback is from AJAX or not.
I want to ask you how the browser sends ajax request i mean what is the format of ajax request. So what is actual format of AJAX request sent by browser.
Thanks in advance
If you install Firefox and Firebug you can see for yourself:
http://codeclimber.net.nz/archive/2007/08/01/How-to-debug-XmlHttpRequest-with-Firebug.aspx
It's a standard HTTP request - just like any other request the browser makes.
You can read more about the XMLHttpRequest call and indeed the structure of a HTTP request on WikiPedia.
AJAX is shorthand for Asynchronous JavaScript and XML and does not define a standard on how the data is transferred.
Because the browsers are designed primarily as HTTP clients you should study GET and POST and maybe PUT and DELETE for RESTful web services.