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[appendix]
== Migrating from Cowboy 2.9 to 2.10
Cowboy 2.10 is a maintenance release adding support
for Erlang/OTP 26. The main change is a Cowlib update
to fix a compilation error that only occurs starting
from OTP 26.
Cowboy 2.10 requires Erlang/OTP 22.0 or greater.
=== Features added
* Add support for `Default` value of SameSite
cookie attribute.
* Add support for the `stale-*` cache-control directives
from RFC 5861.
* Update Cowlib to 2.12.1.
=== Bugs fixed
* Fix a compilation error in Cowlib when using Erlang/OTP 26.
* Fix data sent after RST_STREAM in HTTP/2 in rare cases.
* Fix parsing of RST_STREAM frames to properly handle
frames that have a valid length but were not fully
received yet.
* Remove the obsolete `Version` cookie attribute.
* Handle more edge cases for cookie parsing based on updates
to the RFC 6265bis draft.
* Make Basic auth parsing ignore unknown authentication
parameters and generally update the code to conform
to RFC 7617.
* Fix URI template reserved expansion of %-encoded.
* Update structured headers implementation to RFC 8941.
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