class Protocol::HTTP::Body::Writable

@parameter queue [Thread::Queue] Specify a different queue implementation, e.g. `Thread::SizedQueue` to enable back-pressure.
@parameter length [Integer] The length of the response body if known.

Initialize the writable body.

def initialize(length = nil, queue: Thread::Queue.new)
	@length = length
	@queue = queue
	@count = 0
	@error = nil
end