![]() We can add more properties to the session object. Whenever we make a request from the same client again, we will have their session information stored with us (given that the server was not restarted). The session middleware handles all things for us, i.e., creating the session, setting the session cookie and creating the session object in req object. Never use this in production environments. In this example, we will use the default store for storing sessions, i.e., MemoryStore. ![]() We will put the session and cookie-parser middleware in place. We will need the Express-session, so install it using the following code. Information associated with the client is stored on the server linked to this ID. You assign the client an ID and it makes all further requests using that ID. But they are both readable and on the client side. Cookies and URL parameters are both suitable ways to transport data between the client and the server. However, if it was set to false, it stops re-fetching the session and the components will stay as it is.HTTP is stateless in order to associate a request to any other request, you need a way to store user data between HTTP requests. When refetchOnWindowFocus is set to true (the default) tabs/windows will be updated and initialize the components' state when they gain or lose focus. The refetchOnWindowFocus option can be used to control whether it automatically updates the session state when you switch a focus on tabs/windows. The value for refetchInterval should always be lower than the value of the session maxAge session option. If the session state has expired when it is triggered, all open tabs/windows will be updated to reflect this. If set to any value other than zero, it specifies in seconds how often the client should contact the server to update the session state. ![]() When refetchInterval is set to 0 (the default) there will be no session polling. The refetchInterval option can be used to contact the server to avoid a session expiring. If you are using a custom base path, and your application entry point is not at the root of the domain "/" but something else, for example "/my-app/" you can use the basePath prop to make NextAuth.js aware of that so that all redirects and session handling work as expected. ![]() Using low values for refetchInterval will increase network traffic and load on authenticated clients and may impact hosting costs and performance. Any update in one tab/window triggers a message to other tabs/windows to update their own session state. These options have no effect on clients that are not signed in.Įvery tab/window maintains its own copy of the local session state the session is not stored in shared storage like localStorage or sessionStorage. However, if you need to customize the session behavior and/or are using short session expiry times, you can pass options to the provider to customize the behavior of the useSession() hook. If you need to, you can trigger an update of the session object across all tabs/windows by calling getSession() from a client side function. If you have session expiry times of 30 days (the default) or more then you probably don't need to change any of the default options in the Provider. a user signs in or out) when refetchOnWindowFocus is true. The session state is automatically synchronized across all open tabs/windows and they are all updated whenever they gain or lose focus or the state changes (e.g. Alternatively, you can do per page authentication checks client side, instead of having each authentication check be blocking (SSR) by using the method described below in alternative client session handling. If every one of your pages needs to be protected, you can do this in getInitialProps in _app, otherwise you can do it on a page-by-page basis. You can also define an onUnauthenticated() callback, if you would like to do something else: Example The default behavior is to redirect the user to the sign-in page, from where - after a successful login - they will be sent back to the page they started on. If after the initial loading state there was no session found, you can define the appropriate action to respond. You can use useSession in a way that makes sure you always have a valid session. This increases server load, and if you are good with making the requests from the client, there is an alternative. status: enum mapping to three possible session states: "loading" | "authenticated" | "unauthenticated"ĭue to the way how Next.js handles getServerSideProps and getInitialProps, every protected page load has to make a server-side request to check if the session is valid and then generate the requested page (SSR).in case of success, data will be Session.in case it failed to retrieve the session, data will be null.when the session hasn't been fetched yet, data will undefined.data: This can be three values: Session / undefined / null.UseSession() returns an object containing two values: data and status:
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