func isKeepAlive()

in Sources/NIOHTTP1/HTTPTypes.swift [246:274]

• 25 lines of code
• 13 McCabe index (conditional complexity)

    func isKeepAlive(version: HTTPVersion) -> Bool {
        switch self.keepAliveState {
        case .close:
            return false
        case .keepAlive:
            return true
        case .unknown:
            var state = KeepAliveState.unknown
            for word in self[canonicalForm: "connection"] {
                if word.utf8.compareCaseInsensitiveASCIIBytes(to: "close".utf8) {
                    // if we see multiple values, that's clearly bad and we default to 'close'
                    state = state != .unknown ? .close : .close
                } else if word.utf8.compareCaseInsensitiveASCIIBytes(to: "keep-alive".utf8) {
                    // if we see multiple values, that's clearly bad and we default to 'close'
                    state = state != .unknown ? .close : .keepAlive
                }
            }

            switch state {
            case .close:
                return false
            case .keepAlive:
                return true
            case .unknown:
                // HTTP 1.1 use keep-alive by default if not otherwise told.
                return version.major == 1 && version.minor >= 1
            }
        }
    }