2015-02-25 23:22:00 +00:00
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---
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created: 2008-07-15 22:08:02 +0200
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2022-01-23 17:14:59 +00:00
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language: en
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layout: redirect
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layout_old: default
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redirect_to: https://blog.mbirth.de/archives/2008/07/15/domain-cookies.html
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2015-02-25 23:22:00 +00:00
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tags:
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2022-01-23 17:14:59 +00:00
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- know-how
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- development
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- web
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- cookies
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title: Domain-Cookies
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toc: false
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updated: 2008-07-15 22:08:02 +0200
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2015-02-25 23:22:00 +00:00
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---
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2022-01-23 17:14:59 +00:00
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2015-02-25 23:22:00 +00:00
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According to various documentation, the cookie domain has to contain **at least** 2 dots for a browser to accept this
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as a wildcard cookie (e.g. `.google.com`) and use this for all sub-domains. So `.foo.bar.com` should work - **should**.
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Opera doesn't like it and only accepts it domain-wide if there are **exactly** 2 dots in the domain name. In this case
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2022-01-23 17:14:59 +00:00
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`.bar.com`. If you use `.foo.bar.com` the string is ignored and the cookie only gets set for the current domain.
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