HTTP请求中是否允许有多个Cookie标头？
HTTP请求中是否允许有多个Cookie标头？
提问于 2013-05-01 01:38:09
通常，浏览器将cookies分组到单个Cookie标头中，例如：
Cookie: a=1; b=2该标准是否允许将这些作为单独的标头发送，例如：
Cookie: a=1
Cookie: b=2或者它们必须总是在同一条线上？
回答 1
Stack Overflow用户
发布于 2018-03-21 22:46:21
现在它在HTTP/2 (RFC 7540)中是允许的，它指定：
8.1.2.5. Compressing the Cookie Header Field
The Cookie header field [COOKIE] uses a semi-colon (";") to delimit
cookie-pairs (or "crumbs"). This header field doesn't follow the
list construction rules in HTTP (see [RFC7230], Section 3.2.2), which
prevents cookie-pairs from being separated into different name-value
pairs. This can significantly reduce compression efficiency as
individual cookie-pairs are updated.
To allow for better compression efficiency, the Cookie header field
MAY be split into separate header fields, each with one or more
cookie-pairs. If there are multiple Cookie header fields after
decompression, these MUST be concatenated into a single octet string
using the two-octet delimiter of 0x3B, 0x20 (the ASCII string "; ")
before being passed into a non-HTTP/2 context, such as an HTTP/1.1
connection, or a generic HTTP server application.
Therefore, the following two lists of Cookie header fields are
semantically equivalent.
cookie: a=b; c=d; e=f
cookie: a=b
cookie: c=d
cookie: e=f页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/16305814
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