I have this Web Developer app that sends list data to another set of .aspx/aspx.cs files like this:
Session.Add("Selected-List-Details", Selected-List-Details);
Server.Transfer("new-file-name.aspx");
The problem, however, is if more than one user tries to do something at the same time, data is getting cross-contaminated between the 2 sessions.
Is there a better way to do this? Is there a simple workaround? Am I overlooking a useful session function?
http://msdn.microsoft.com/en-us/library/ms525800(v=vs.90).aspx. seems to show how to send the session id with your server.transfer
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When you are inactive for a period of time in aws, aws will log you out and show pop-up like this.
I am wondering how aws handles it and how should do it in nodejs
Take a look this article. It may give a solution for you.
https://medium.com/tinyso/how-to-detect-inactive-user-to-auto-logout-by-using-idle-timeout-in-javascript-react-angular-and-b6279663acf2
When we hear about the timeout, I’m pretty sure that you will think about using setTimeout method in this context. And yes, it’s the simplest way to implement the timeout on the browser by the following steps:
Call setTimeout(, )
If users do something on the app (move, click, input), we clear the timeout by using clearTimeout method and then call setTimeout again. However, this solution is just working fine if the users are on a single tab. If they are using our app on multiple tabs, it should be an issue since they are active on the current tab but inactive on the rest. Then we need to find another solution that allows the active state to sync across multiple tabs
There are two ways to handle sessions in NodeJS.
Session based
Token based
Since you are asking about tokens, you can set expiry time for the created token.
I am trying to understand on a high level how a system like coderpad works. Everytime I use Coderpad to practice interviews with friends, it creates a session with a temporary link that both users can access to start the coding interview.
When a someone goes to the homepage they would be served the standard html page/client for the homepage. When they create an interview session they are served the html page/client for the coding pad, and there must also be a way to users to connect to the same session and for each session to be an isolated instance? Im guessing that when each user use the link, the server process their request and based on the link, it actually set up a stream connection between the users so that they can collaborate on a shared document, share video/voice.
my questions are:
- how exactly is the temporary link created, and how can it be created so fast?
- is my understanding of how it works correct?
- Giving topics to look into that could point me in the right direction would really help
I got curious about this too, after an interview on CoderPad.io. I suspect the temporary links are just for the server to identify the session - not actual pages on the server. Probably using WebSocket to communicate between the server and clients, broadcasting back to all users whenever code is changed (or other events.)
The coding pad page is the same static HTML. The contents and users are modified on the back-end, and only the results are shown - like in a chatroom.
Hope this helps.
I want to develop an attendance management page where I want to update my MongoDB database every time when the user leaves the page.
I found unload function in some answers, but cannot realize how to use it in Node.js.
How can I do this using Node.js framework in PhpStorm?
You would have to do it from server side, sending request from client before he leaves the page is a bad approach. There are many ways how client can disconnect without sending any request, like connection lost, killing process etc.
Maybe consider different approach, like sending an ajax request as an indication that user is still on page?
Or you could look around for existing solutions, maybe something like Using node.js to display number of current users
could help.
I have a small chrome extension that helps users to quickly search for Pokémon Content and I'd like to know if there is a way to pass a message from my users to me...
I'd like to do this to get data from my users, data like what is being searched most, the most used options, things like this for curiosity...
Is there any way to do something like this?
I thought about creating another extension to pass message, but as far as I know, Chrome Extensions can only pass messages to another extension the user has...
So, is there any way to do something like this?
You could send the information to a server and store it in a database, or a log file of some kind. I know I've used multiple chrome extensions of some kind in the past that use a connection to a server hosted by the company/developer that created the plugin.
I'm working on an app that i being built using Node and Express. All is fine, however the app is currently not asynchronous and I'd like it to be, so I'm currently investigating what would be the best way to do it.
As far as I can tell, socket.io seems to be the preferred choice to go with Node.
My question is, is socket.io's methodology the best way to move data between the server and client or is there a better, more robust way to do it? Maybe something accomplished with Node only?
PS: I think socket.io sounds really nice. Its just that I'm new to Node and though there would be a simpler way to move data back and forth.
Many thanks
EDIT:
Ok, I've seen the term "realtime" used before and was frown upon. The commenter implied that technically there is no "realtime" application, hence me choosing asynchronous, however realtime does describe what I'm after: An app that will be all ajax-like. For instance, in my app, when I need to edit a saved document (mongodb records are called documents), I need to redirect the page passing the document id as argument. I don't want that. I want all through ajax. I can achieve this with jQuery, however behind the scenes the server will still be moving through urls (I'll need to create loads of app.get('product/:id/edit', ...), app.post('/product/:id/edit'. ... and then use $.ajax to get and post stuff ) so I was wondering what's the best way to achieve this.
PS: I might be looking at this completely wrong. Like I said, I'm new to Node and for app development for that matter.
EDIT2: An example: Let's say I have a page with a table in it where I list all products. Each product will have a EDIT/DELETE button. At the moment, when I click edit, I'm redirected to another page where I can edit the product and save it, then I'm redirected to the product listing. I'd prefer to load the product into a modal window, make whatever edits I need, then update the product/listing without leaving the page.
Using $.ajax I can use the product ID, enquiry the db for that particular product, populate the field in the modal with the product details and display to the user. Then allow the user to make the changes and update the products, however the part in which I need to enquiry the db in order to populate the modal is muddy because the id needs to be passed through the url...
I don't know how to pass the id to the application unless is through app.get('/product/:id/edit', ...) then app.post('/product/:id/edit').