The header is largely for internal use, however, it must be exported
because the header! macro uses it. As deref! is also a particularly
general name, this renames it to __hyper__deref! to prevent name
clashes.
BREAKING CHANGE: If you use deref! from the header module, you'll need
to switch to using __hyper__deref!.
The spec says the header can be either a `*`, `null` or an URL.
Improve docs of header.
BREAKING CHANGE: Add variant to Access-Control-Allow-Origin enum
Parses protocols into a name and a value part matching the RFC.
An enum contains all registered or known protocols, but contains
an extension variant.
Closes#480
BREAKING CHANGE: Upgrade header Protocol changed.
A single value header value can't be "", so `from_one_raw_str()` now
returns `None` on empty values. This makes custom checks in headers
obsolete.
BREAKING CHANGE: `from_one_raw_str()` returns `None` on empty values.
That way, third-parties can keep using the `header!` macro, which
now requires the `test_header!` macro as well.
Considering the `header!` macro is exported and part of the public
API, it was not desired to prevent it's usage in any way.
In empty list header values ``, or list header values with empty items `foo, , bar`,
the empty value is parsed, if the parser does not reject empty values an item is added
to the resulting header. There can't be empty values. Added a test for it in AcceptEncoding.
This is the last bunch of headers that should use the new macro. Moved them out of
their own folder so that the macro works. Changed them, so that they are more in
line with the other headers.
BREAKING CHANGE: `AccessControlAllowHeaders` and `AccessControlRequestHeaders` values
are case insensitive now. `AccessControlAllowOrigin` variants are now `Any` and
`Value` to match the other headers.
`If-Match`, `If-None-Match` and `Vary` headers are either a "*" value meaning that the header
matches every possible item or a list of items, one of them must be matched to fulfil the condition.
BREAKING CHANGE: `If-Match`, `If-None-Match` and `Vary` item variant name changed to `Items`
