What are the differences between them? Improve this question. Rob Hruska k 28 28 gold badges silver badges bronze badges. I think second answer to this question is more apt, If you select that as best answer, many people will read it. Add a comment. Active Oldest Votes. Then, instead of giving your account number and driver's license for each transaction, you can just say "I'm client 12" Translating that to Web Servers: The server will store the pertinent information in the session object, and create a session ID which it will send back to the client in a cookie.
One other alternative is for the server to use URL rewriting to exchange the session id. Improve this answer. Suraj Jain 4, 25 25 silver badges 39 39 bronze badges. Chris Cudmore Chris Cudmore This is a wonderful explanation anchored in a great real-world analogy.
This answer should be upvoted way more. Very accessible to newbies who are those most likely to ask such a question.
What happens if I'm a user and someone else gets to know my session ID? I19 Possibly, they can impersonate you. This has happened in online gambling scenarios -- Sniff the hotel wifi, steal a session ID, and access the account. Securing a session is another story altogether. So who creates the cookie first?
Server or client? Or is this application-dependant? I'd say server since otherwise it poses security threats, but I think it is worth mentionning? The session is created depending on the application logic when you want it to be created. The client can also create a cookie but it may not be of much use in the scenario of identifying the session because the server might not know what the value represents in the session. Show 1 more comment. Eran Galperin Eran Galperin Secret-ID in the URL can be made secure if done properly, and if the user understands that the URL is secret and cannot be posted in a public forum ever.
WynandB 1, 13 13 silver badges 15 15 bronze badges. Eugene Eugene 9, 4 4 gold badges 39 39 silver badges 60 60 bronze badges.
RishikeshD RishikeshD 2 2 silver badges 4 4 bronze badges. Nick Holt Nick Holt Session in Asp. Maintains the data accross all over the application.
Vicky Vicky 2 2 gold badges 12 12 silver badges 29 29 bronze badges. Elangovan Elangovan 3, 4 4 gold badges 29 29 silver badges 37 37 bronze badges. Well, actually you can hold multiple data in cookies. Each session is assigned a unique id which is used to retrieve stored values. If the client browser does not support cookies, the unique session id is displayed in the URL. Sessions have the capacity to store relatively large data compared to cookies. The session values are automatically deleted when the browser is closed.
If you want to store the values permanently, then you should store them in the database. Just like cookies, the session must be started before any HTML tags. The path were the cookies are stored depends on the browser. Internet Explorer usually stores them in Temporal Internet Files folder.
Personalizing the user experience — this is achieved by allowing users to select their preferences. The page requested that follow are personalized based on the set preferences in the cookies. Tracking the pages visited by a user. To store important information such as the user id more securely on the server where malicious users cannot temper with them.
Sessions are used to pass values from one page to another. It is also used when you want the alternative to cookies on browsers that do not support cookies, to store global variables in an efficient and more secure way compared to passing them in the URL, developing an application such as a shopping cart that has to temporary store information with a capacity larger than 4KB. When a client makes a call to an application server, a Servlet developer can programmatically create and associate an HttpSession with that client.
The session can then be used to keep track of all sorts of information about the user. If the user tells us their favorite color, we can store that information in their session. If the user gives us their address and phone number, we can store that in their session. We can then go back into that session object, at any point in time, and pull that information out.
So when a user is done taking an online exam, we can go into their session and find out which questions they got correct, and which questions they got wrong. HttpSessions add state to a stateless protocol, and they are pivotal in making online applications work.
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