javascript - How to detect some unique browser instance number, or pid number per "window" or per "tab" -


i'm writing web app, , have classic problem session cookie shared between browser instances, , browser tabs. browser doesn't send header. able control requests inside app, i'm wondering if can add own "parameter".

so question is, there javascript might identify process id, or instance id, or tab id on client side? can take care of sending server, i'm wondering if knows of tricks on browser side.

browser-specific suggestions welcome - i'm happy answers work in 1 browser type.

here list of information can javascript: information web browser javascript. don't think can system specific information pids javascript, security issue.


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