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Added extra check_allowed_headers kludge for Accept request header #13

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Added extra check_allowed_headers kludge for Accept request header #13

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3 changes: 3 additions & 0 deletions src/cowboy_cors.erl
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Original file line number Diff line number Diff line change
Expand Up @@ -125,6 +125,9 @@ check_allowed_headers([<<"origin">>|Tail], Allowed, Req, State) ->
%% header underpins the entire CORS framework, its inclusion in
%% the requested headers is nonsensical.
check_allowed_headers(Tail, Allowed, Req, State);
check_allowed_headers([<<"accept">>|Tail], Allowed, Req, State) ->
%% KLUDGE: for browsers that include this header.
check_allowed_headers(Tail, Allowed, Req, State);
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@danielwhite danielwhite May 7, 2016 •
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If I recall correctly, the prior deals with Safari always requesting the Origin header, no matter what the client does. Is there a case of any browsers doing the same for Accept header?

Perhaps a slightly less restrictive default for allowed_headers when it isn't defined would be more appropriate (e.g. Accept and Content-Type)?

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Sorry it's gone out of my mind now :) reading around at the time, it seemed that browser handling of CORS was changing rapidly. Perhaps kludges - and/or less restrictive defaults - are appropriate until/unless things settle.

check_allowed_headers([Header|Tail], Allowed, Req, State) ->
case lists:member(Header, Allowed) of
false ->
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