现代浏览器目前的Cookie限制是什么? [英] What are the current cookie limits in modern browsers?
问题描述
截至2011年,现代浏览器的常规Cookie限制是什么?我特别感兴趣的是:
- 单个Cookie的最大大小
- /主机/域名+路径
- 每个主机/域名的最大Cookie数量
- 给定的所有Cookie的最大数量/浏览器
我知道 RFC 2109 指定:
- 至少300个Cookie
- 至少4096
- 每个唯一的主机或域至少要有20个Cookie(每个Cookie的字节数由组成Cookie非终端的字符的大小衡量)名称
但是什么是真实世界的规格?
这是一个方便测试的工具: http://browsercookielimits.squawky.net/
它显示了很多关于cookie的内部细节。
例如,我针对Google Chrome 10.0.648.134测试版运行了所有测试:
/ p>22:23:46.639:正在开始
pre>
22:23:47.345:计数:字符长度为3字符1:180
22:23:50.131:大小:使用字符1的最大Cookie字符长度:4096
22:23:52.347:计数:字符长度为4096 1:180
22:23:54.517:大小:使用字符ÿ的最大Cookie字符长度:2049
22:23:57.450:计数:字符长度为2049的最大Cookie计数, ÿ:180
22:23:59.41:计数:字符长度100和字符1的最大Cookie计数:180
22:24:0.535:计数:字符长度为10的Cookie计数字符1:180
22:24:2.88:计数:字符长度5和字符1的最大Cookie计数:180
22:24:2.886:猜测每个域的最大Cookie计数:180
22:24:2.887:猜测每个Cookie的最大Cookie大小:4096字节
22:24:2.887:猜测每个域的最大Cookie大小:NA
这个答案很老,但我刚刚检查了最新Chrome版本的结果,相同。
编辑:更新Chrome 54.0.2840.98(64位)的答案。What are the generic cookie limits for modern browsers, as of 2011? I'm particularly interested in:
- Max size of a single cookie
- Max number of cookies per host/domain name + path
- Max number of cookies per host/domain name
- Max number / max total size of all cookies in a given browser
I'm aware of RFC 2109 that specifies:
- at least 300 cookies
- at least 4096 bytes per cookie (as measured by the size of the characters that comprise the cookie non-terminal in the syntax description of the Set-Cookie header)
- at least 20 cookies per unique host or domain name
but what are real-world specs?
Here's a handy tool to test it: http://browsercookielimits.squawky.net/
It reveals quite a lot about the internal details regarding cookies. Click "Run Tests for Current Browser" for the results (it only takes a moment).
For example, I ran all tests for Google Chrome 10.0.648.134 beta:
22:23:46.639: Starting
22:23:47.345: Count: Max Cookie count with Character Length 3 and character "1": 180
22:23:50.131: Size: Max Cookie Character Length using character "1": 4096
22:23:52.347: Count: Max Cookie count with Character Length 4096 and character "1": 180
22:23:54.517: Size: Max Cookie Character Length using character "ÿ": 2049
22:23:57.450: Count: Max Cookie count with Character Length 2049 and character "ÿ": 180
22:23:59.41: Count: Max Cookie count with Character Length 100 and character "1": 180
22:24:0.535: Count: Max Cookie count with Character Length 10 and character "1": 180
22:24:2.88: Count: Max Cookie count with Character Length 5 and character "1": 180
22:24:2.886: Guessing Max Cookie Count Per Domain: 180
22:24:2.887: Guessing Max Cookie Size Per Cookie: 4096 bytes
22:24:2.887: Guessing Max Cookie Size Per Domain: NA
This answer is pretty old, but I just checked results for the latest Chrome version, and they're essentially the same. Edit: updated the answers for Chrome 54.0.2840.98 (64-bit).
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