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CURLOPT_COOKIE.md: this cookie gets appended to the others

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... so it adds the risk of making the header too long. Clarify this
better.

Also: remove the PSL mention from here since it is not really relevant
for this option as this option is for specific *outgoing* cookies only.

Reported-by: Hiroki Kurosawa
Closes #14839
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Daniel Stenberg 2024-09-09 23:48:19 +02:00
parent b61d6e088e
commit 4a382f4bfe
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1 changed files with 13 additions and 16 deletions
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docs/libcurl/opts/CURLOPT_COOKIE.md
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@ -35,7 +35,8 @@ NAME=CONTENTS, where NAME is the cookie name and CONTENTS is what the cookie
should contain. should contain.
To set multiple cookies, set them all using a single option concatenated like To set multiple cookies, set them all using a single option concatenated like
this: "name1=content1; name2=content2;" etc. this: "name1=content1; name2=content2;" etc. libcurl does not syntax check the
data but assumes the applications gives it what it needs to send.
This option sets the cookie header explicitly in the outgoing request(s). If This option sets the cookie header explicitly in the outgoing request(s). If
multiple requests are done due to authentication, followed redirections or multiple requests are done due to authentication, followed redirections or
@ -43,29 +44,25 @@ similar, they all get this cookie passed on.
The cookies set by this option are separate from the internal cookie storage The cookies set by this option are separate from the internal cookie storage
held by the cookie engine and they are not be modified by it. If you enable held by the cookie engine and they are not be modified by it. If you enable
the cookie engine and either you have imported a cookie of the same name the cookie engine and either you have imported a cookie of the same name (e.g.
(e.g. 'foo') or the server has set one, it has no effect on the cookies you 'foo') or the server has set one, it has no effect on the cookies you set
set here. A request to the server sends both the 'foo' held by the cookie here. A request to the server sends both the 'foo' held by the cookie engine
engine and the 'foo' held by this option. To set a cookie that is instead held and the 'foo' held by this option. To set a cookie that is instead held by the
by the cookie engine and can be modified by the server use cookie engine and can be modified by the server use CURLOPT_COOKIELIST(3).
CURLOPT_COOKIELIST(3).
Since this custom cookie is appended to the Cookie: header in addition to any
cookies set by the cookie engine, there is a risk that the header ends up too
long and thereby getting the entire request rejected by the server.
Using this option multiple times makes the last set string override the Using this option multiple times makes the last set string override the
previous ones. previous ones.
This option does not enable the cookie engine. Use CURLOPT_COOKIEFILE(3) This option does not enable the cookie engine. Use CURLOPT_COOKIEFILE(3) or
or CURLOPT_COOKIEJAR(3) to enable parsing and sending cookies CURLOPT_COOKIEJAR(3) to enable parsing and sending cookies automatically.
automatically.
The application does not have to keep the string around after setting this The application does not have to keep the string around after setting this
option. option.
If libcurl is built with PSL (*Public Suffix List*) support, it detects and
discards cookies that are specified for such suffix domains that should not be
allowed to have cookies. If libcurl is *not* built with PSL support, it has no
ability to stop super cookies. PSL support is identified by the
**CURL_VERSION_PSL** feature bit returned by curl_version_info(3).
# DEFAULT # DEFAULT
NULL, no cookies NULL, no cookies