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Add migration note concerning multiple headers

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Luke Bakken 2017-10-23 06:39:07 -07:00 • committed by Loïc Hoguin
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7
doc/src/guide/migrating_from_1.0.asciidoc
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@ -195,6 +195,13 @@ Cowboy 2.0 now comes with Erlang.mk templates.
They are no longer allowed. URIs are expected to be in UTF-8 once
they are percent-decoded.
* Clients that send multiple headers of the same name
will have the values of those headers concatenated into a
comma-separated list. This is of special importance in the
case of the content-type header, as previously only the
first value was used in the `content_types_accepted/2` step
in REST handlers.
* Etag comparison in REST handlers has been fixed. Some requests may
now fail when they succeeded in the past.