This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
Cookie2 HTTP request header used to advise the server that the user agent understands "new-style" cookies, but nowadays user agents will use the
Cookie header instead, not this one.
|RFC 2965: Cookie2||Historic specification of HTTP State Management Mechanism, obsoleted by RFC 6265|
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