Set Allow
header when returning 405 Method Not Allowed
#733
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This changes
MethodRouter
so it sets theAllow
header when returning405 Method Not Allowed
.The header value is built up as a
BytesMut
to avoid allocations when creating the response.The header is also set when the fallback is hit, unless the response generated by the fallback already contains the header. This should result in it doing the thing most of the time while allowing users to override it if they handle additional methods in the fallback.
Fixes #731