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How to prevent users from cloning session/browsers (ie Ctrl-N)?
There are 2 questions pertaining to browser cloning which I need help on:
1) If the user does a Ctrl-N after loading the main page on my application, session attributes will overlap each other, say for instance, session.getAttribute("test
2) If the user does a Ctrl-N in the midst of submitting a form, the child browser's session will be inherited from the parent browser, hence, the user will be able to submit the same record twice, once from the parent browser, once from the child.
In view of the 2 questions as mentioned, is there anyway we can make sure at any one time, only one instance of the web application is active?
Any help or advice is deeply appreciated. Thanks in advance.
A scripting language is a programming language that supports scripts, programs written for a special run-time environment that automate the execution of tasks that could alternatively be executed one-by-one by a human operator. Scripting languages are often interpreted (rather than compiled). Primitives are usually the elementary tasks or API calls, and the language allows them to be combined into more complex programs. Environments that can be automated through scripting include software applications, web pages within a web browser, the shells of operating systems (OS), embedded systems, as well as numerous games. A scripting language can be viewed as a domain-specific language for a particular environment; in the case of scripting an application, this is also known as an extension language.
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Thank you so much for the comprehensive solution.
However, I do have some qualms about implementing the state machine in my web application.
If we make use of session to store a data structure which helps to simulate the state machine, wouldn't everything be back to square one since session might be cloned once again?
I have thought of the implementing the State Machine using persistence storage (database) but that results in high overhead.
Appreciate your advice. Do you have any suggestions/comments?
Thanks in advance. =)