Do not allocate String to check if HTTP message is keep alive (#402)
Do not allocate String to check if HTTP message is keep alive (#402)

Motivation:

We can check if a HTTP message is using keep alive without any allocation.

Modifications:

Directly act on the internal storage of HTTPHeaders to find out if keep alive is used or not.

Result:

Less allocations
apple/swift-nio,apple/swift-nio,apple/swift-nio,apple/swift-nio,apple/swift-nio