Does session storage persist across subdomains?

Does session storage persist across subdomains?

Actually, this is a browser storage security issue, and in fact, none of LocalStorage/WebSQL/IndexedDB can be shared across subdomains. So, unfortunately for use-cases like this storage across subdomains isn’t possible in any browser. Whereas traditional cookie session management can be scoped to multiple subdomains.

Does LocalStorage work across subdomains?

If the data to be stored is needed on multiple subdomains, local storage also does not work – because local storage is subdomain-specific. Cookies, on the other hand, are more flexible in scope – they can be written to work across multiple subdomains (or even all subdomains on the same top-level domain).

Can a subdomain share a session?

since separate websites don’t share sessions (as far as i know, since subdomains are technically “different places” from eachother), don’t use sessions to store on the server side. instead, use a database to handle your sessions. that way, multiple sites can share the same session tracking table.

Can two subdomains share cookies?

8 Answers. Two different domains (e.g. mydomain.com and subdomain.mydomain.com , or sub1.mydomain.com and sub2.mydomain.com ) can only share cookies if the domain is explicitly named in the Set-Cookie header. Otherwise, the scope of the cookie is restricted to the request host.

Is session storage domain specific?

localStorage data is specific to the protocol of the document. In particular, for a site loaded over HTTP (e.g., http://example.com ), localStorage returns a different object than localStorage for the corresponding site loaded over HTTPS (e.g., https://example.com ).

Is session storage a domain?

5 Answers. It’s per domain and port (the same segregation rules as the same origin policy), to make it per-page you’d have to use a key based on the location , or some other approach. You don’t need a prefix, use one if you need it though. Also, yes, you can name them whatever you want.

Is localStorage shared between domains?

As you may know, LocalStorage is domain based. You can’t read or write from localstorage that’s on different domain, even if that’s subdomain. But there is iframe trick that you can use to store data from domain to it’s subdomain.

Is localStorage site specific?

How do I set a cookie for a different subdomain?

When setting a cookie, you can specify the domain to set it on or not, but if you don’t, the default is to set the cookie for only the specific domain you’re setting it on. To set a cookie that will be shared across the setting domain and all sibling and child domains, set the cookie’s domain to “. rootdomain.com”.

Are cookies shared between domains?

Cookie is not shared among different browsers. Means, one browser cannot read the cookie stored by another browser even if it is same domain. As per HTTP protocol, size of the cookies cannot be greater than 4KB. Number of cookies sent by web server for a given domain cannot be unlimited.

Are subdomains considered third party cookies?

no cookie is treated as a 3rd party cookie. Cookies seem to be considered 3rd party if they come from different base domains (base domains being example.com or example.co.uk ), but not if they come from different subdomains of the same base domain.

Does session storage persist across tabs?

The benefit of the sessionStorage is that it’ll persist across different pages and browser refreshes. Hence the user may navigate to different pages and/or refresh the page and still remain logged-in. When the user closes the tab – it’s gone.

How to correctly track subdomains in Google Chrome?

A search for “subdomains” points you to documentation for cross-domain tracking, and cookie domains. The former makes no mention of sessions or subdomains. The latter describes tracking users across subdomains, but makes no mention of connecting sessions across subdomains. It also highlights the following quote:

Are there any Seo benefits to using subdomains?

While subdomains have little benefit from an SEO viewpoint, many websites have plenty of justifications to leverage them. Configuring Google Analytics subdomain tracking can be somewhat aggravating and extremely cumbersome.

How does tracking work on a subdomain?

After tracking is set up, traffic sources, user actions and behavior completed on any subdomain can be attributed to the same user session. For example, you might have a promotional landing page set up at info.example.com that directs users to purchase products at buy.example.com.

What happens when you cross subdomain in Google Analytics?

Without cross-subdomain tracking, GA will count a new session every time a user goes from a subdomain to a domain (and vice versa). This means that total sessions are being miscalculated and referral data gets lost. Translation — there’s no way to tell where a user came from and sessions become inflated.