* Embedded: getOption(.allowRemoteHalfClosure) -> OK
Motivation:
In `swift-nio-ssl`, I am currently working on allowing half-closures
which relies on querying the underlying channel if
`ChannelOptions.Types.AllowRemoteHalfClosureOption` is enabled. As a lot of
`swift-nio-ssl`'s tests rely on `EmbeddedChannel` and it did not support
this option, a lot of the tests failed.
Modifications:
* add a `public var allowRemoteHalfClosure` to `EmbeddedChannel`
* enable setting/getting
`ChannelOptions.Types.AllowRemoteHalfClosureOption` in
`EmbeddedChannel` (only modifies the `allowRemoteHalfClosure` variable
* add test for new behaviour
* AsyncTestingChannel: getOption(.allowRemoteHalfClosure) -> OK
Motivation:
`AsyncTestingChannel` interface should be in step with `EmbeddedChannel`
interface. Therefore also add support for the
`AllowRemoteHalfClosureOption`
Modifications:
* add a `public var allowRemoteHalfClosure` to `AsyncTestingChannel`
* enable setting/getting
`ChannelOptions.Types.AllowRemoteHalfClosureOption` in `AsyncTestingChannel`
(only modifies the `allowRemoteHalfClosure` variable
* add tests for new behaviour
* Synchronize access to allowRemoteHalfClosure
Modifications:
* add `ManagedAtomic` property `_allowRemoteHalfClosure` to
`EmbeddedChannelCore`
* make sure that access to `allowRemoteHalfClosure` from
`AsyncTestingChannel` and `EmbeddedChannel` is synchronized by
accessing underlying atomic value in `channelcore`
* Update allocation limits
47b6289d93