I am trying to build a front end application which will an input text box.
When a user enters an URL in the text field(ex www.google.com, wwww.facebook.com, www.linked.com, etc..), the web app should tell the user whether if the provided address has a re-direction?
Can it be done from ajax?
You can send a GET request to the URL and see what it returns.
Every HTTP response will come with a status code.
You can see the full list of HTTP status codes here: https://en.wikipedia.org/wiki/List_of_HTTP_status_codes
A 301 means the URL has a permanent redirect and a 302 means there is a temporary redirect.
Related
I developed a contact form for my site and it is working and redirects to another url inside my domain when it is sent (for example lets say domain.com/sent). The thing is, if someone by chance decides to access the url domain.com/sent directly, it can be accessed like if he had submitted the form and was redirected there. I also have configured a 404 error custom page for any other page outside the existing ones, is there any way of disabling the domain.com/sent external access and redirecting to the error 404 page and keeping the sent page only for the users who really submitted the form?
Have the response to the POST request to the form handler set a cookie.
Have the handler for /sent test for that cookie and:
If it is set:
Delete the cookie
Display the sent page
If it not send:
Do something different such as displaying an error or redirecting
I am struggling to understand how our local gov website functions. Specifically the URL https://self.maidstone.gov.uk/service/check_your_bin_day
Beginning to enter a postcode (not mine) such as 'ME15 7HQ' and without submitting the form, a list of addresses is available.
Selecting an address and then selecting 'black bin and food', the website will return a result of 'Your collection date will be FRI 30/07/2021'. Again without submitting the form.
Running OWASP's ZAP, I can see that data is being submitted and returned as JSON. The data begins to be submitted as soon as the postcode is being entered.
I'm obviously an amateur but have never seen a site like this. The purposes of the request to Stackoverflow is that I would like (either via curl or a HTTP request) to be able to submit a postcode and address, and then receive the bin days as relevant.
Is this possible? If so any pointers please?
This website uses JavaScript and HTTP requests to dynamically load data.
For viewing those requests, open devtools > Networktab, and click on XHR button:
Afterwards, try to write postcode into the form. For me, it made request to runLookup url. When you click Preview tab, you can see the JSON you was mentioning. In this case, you can find the Street addresses (which are then added to next input on website) is on integration > transformed > rows_data.
The devtools have one amazing feature, that will convert the HTTP request to cURL command, you can do it by right-clicking on the request, Copy > Copy as cURL command:
By this way, you can make the whole process, although, from seeing the whole complexity of their API, I don't think it will be that easy, due you probably would need to preserve cookies, and generally follow some steps of requests to get the result (but this doesn't need to be true, it's just my observation).
I have a situation, when I should to send a POST request to authenticate user, if it's succeed then server set a cookie and then we can get a protected page:
First request by Postman:
Second request (after first):
I need to implement it on web page. As I understand now, it's possible only via frames. How to do it? First request should be sent automatically after opening a page, so, user should open the page and see a protected page.
Cookie Authentication is you are trying to achieve?, here is are some links which will help to you with that.
https://dzone.com/articles/cookie-authentication-with-aspnet-core-20
I have a webpage /example with a form that has action="/submit". submit will process the data sent to the server, and return a 302 redirect back to /example.
I would like to have (the second) /example display some sort of response to the user based on what the user submits to /submit, such as an indication of success or failure.
Sending a 302 redirect doesn't seem to have any way to tell the client to send any additional message to /example, so the server is unable to determine if it should indicate success or failure when fetching /example for the client.
I could append the success or failure message to the 302 redirect url, i.e. redirect to /example?message=Succeeded, but that url will stay on the user's address bar as long as he continues to browse my /example page, which isn't very nice.
I could change the form to have action="/example", but I have multiple forms on the /example page, so I would need to use hidden <input> elements or other means to distinguish the requests submitted by the user to /example. This seems to be more of a hack than a proper solution.
What is the usual way this can be accomplished?
I have a form which is posted to an MVC3 controller that then has to be POSTED to an external URL. The browser need to go to the URL permanently so I thought a permanent redirect would be perfect.
However, how do I send the form POST data with the redirect?
I don't really want to send another page down to the browser to do it.
Thanks
A redirect will always to be a GET, not a POST.
If the 2nd POST doesn't need to come from the client, you can make the POST using HttpWebRequest from the server. Beware the secondary POST may hold up the return of the client request if the external server is down or running slowly.
A permanent redirect is wholly inappropriate here. First, it will not cause form values to be resubmitted. Second, the semantics are all wrong - you would be telling the browser "do not request this url again. instead, go here". However, you do want future submissions to go to your same url.
Gaz's idea could work. It involves your server, only.
Alternatively, send a form with the same submitted values and the external URL, and use client-side code to automatically submit it.