func didFinishHead()

in Sources/NIOHTTP1/HTTPDecoder.swift [564:621]
54 lines of code
8 McCabe index (conditional complexity)

    func didFinishHead(versionMajor: Int,
                       versionMinor: Int,
                       isUpgrade: Bool,
                       method: http_method,
                       statusCode: Int,
                       keepAliveState: KeepAliveState) -> Bool {
        let message: NIOAny?

        guard versionMajor == 1 else {
            self.stopParsing = true
            self.context!.fireErrorCaught(HTTPParserError.invalidVersion)
            return false
        }

        switch self.kind {
        case .request:
            let reqHead = HTTPRequestHead(version: .init(major: versionMajor, minor: versionMinor),
                                          method: HTTPMethod.from(httpParserMethod: method),
                                          uri: self.url!,
                                          headers: HTTPHeaders(self.headers,
                                                               keepAliveState: keepAliveState))
            message = NIOAny(HTTPServerRequestPart.head(reqHead))
            
        case .response where (100..<200).contains(statusCode) && statusCode != 101:
            self.lastResponseHeaderWasInformational = true
            switch self.informationalResponseStrategy.base {
            case .forward:
                let resHeadPart = HTTPClientResponsePart.head(
                    versionMajor: versionMajor,
                    versionMinor: versionMinor,
                    statusCode: statusCode,
                    keepAliveState: keepAliveState,
                    headers: self.headers
                )
                message = NIOAny(resHeadPart)
            case .drop:
                message = nil
            }
            
        case .response:
            self.lastResponseHeaderWasInformational = false
            let resHeadPart = HTTPClientResponsePart.head(
                versionMajor: versionMajor,
                versionMinor: versionMinor,
                statusCode: statusCode,
                keepAliveState: keepAliveState,
                headers: self.headers
            )
            message = NIOAny(resHeadPart)
        }
        self.url = nil
        self.headers.removeAll(keepingCapacity: true)
        if let message = message {
            self.context!.fireChannelRead(message)
        }
        self.isUpgrade = isUpgrade
        return true
    }