URLSession funciona para solicitação, mas não para NWConnection

Estou tentando converter uma URLSessionrequisição simples em Swift para usar NWConnection. Isso porque quero fazer a requisição usando um Proxy que requer Autenticação. Postei esta Pergunta do SO sobre usar um proxy com URLSession. Infelizmente ninguém respondeu, mas encontrei uma solução usando NWConnectionem vez disso.

Meu proxy funciona 100%, mas algo sobre minha configuração não está funcionando e não recebo resposta do servidor. Eu apreciaria alguma ajuda para converter esta solicitação GET básica para uma que utilize NWConnection. O proxy que incluí funciona, sinta-se à vontade para usá-lo para testes. Esta URL específica deve retornar 18,5 KB de dados, então cerca de 18.000 bytes.

Seria ótimo se alguém pudesse ajudar, porque o Swift precisa de um wrapper básico que simplifique as solicitações usando Proxies que podem ou não exigir Auth. Vou criar um wrapper de SO NWConnectionpara simplificar seu uso.

Solicitação de trabalho

func updateOrderStatus(completion: @escaping (Bool) -> Void) {
    let orderLink = "https://shop.ccs.com/51913883831/orders/f3ef2745f2b06c6b410e2aa8a6135847"

    guard let url = URL(string: orderLink) else {
        completion(true)
        return
    }

    let cookieStorage = HTTPCookieStorage.shared
    let config = URLSessionConfiguration.default
    config.httpCookieStorage = cookieStorage
    config.httpCookieAcceptPolicy = .always
    let session = URLSession(configuration: config)
    var request = URLRequest(url: url)
    request.httpMethod = "GET"

    request.setValue("text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", forHTTPHeaderField: "Accept")
    request.setValue("none", forHTTPHeaderField: "Sec-Fetch-Site")
    request.setValue("navigate", forHTTPHeaderField: "Sec-Fetch-Mode")
    request.setValue("Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0.1 Safari/605.1.15", forHTTPHeaderField: "User-Agent")
    request.setValue("en-US,en;q=0.9", forHTTPHeaderField: "Accept-Language")
    request.setValue("gzip, deflate, br", forHTTPHeaderField: "Accept-Encoding")
    request.setValue("document", forHTTPHeaderField: "Sec-Fetch-Dest")
    request.setValue("u=0, i", forHTTPHeaderField: "Priority")
    
    let task = session.dataTask(with: request) { data, response, error in
        if let error = error {
            print("Request error: \(error.localizedDescription)")
            completion(false)
            return
        }

        guard let data = data else {
            completion(false)
            print("No data received")
            return
        }

        if let body = String(data: data, encoding: .utf8) {
            completion(true)
        } else {
            completion(false)
            print("Unable to decode response body")
        }
    }

    task.resume()
}

Tentativa de conversão

func updateOrderStatusProxy(completion: @escaping (Bool) -> Void) {
    let orderLink = "https://shop.ccs.com/51913883831/orders/f3ef2745f2b06c6b410e2aa8a6135847"

    guard let url = URL(string: orderLink) else {
        completion(true)
        return
    }
    
    let proxy = "resi.wealthproxies.com:8000:akzaidan:x0if46jo-country-US-session-7cz6bpzy-duration-60"
    let proxyDetails = proxy.split(separator: ":").map(String.init)
    guard proxyDetails.count == 4, let port = UInt16(proxyDetails[1]) else {
        print("Invalid proxy format")
        completion(false)
        return
    }

    let proxyEndpoint = NWEndpoint.hostPort(host: .init(proxyDetails[0]),
                                            port: NWEndpoint.Port(integerLiteral: port))
    let proxyConfig = ProxyConfiguration(httpCONNECTProxy: proxyEndpoint, tlsOptions: nil)
    proxyConfig.applyCredential(username: proxyDetails[2], password: proxyDetails[3])

    let parameters = NWParameters.tcp
    let privacyContext = NWParameters.PrivacyContext(description: "ProxyConfig")
    privacyContext.proxyConfigurations = [proxyConfig]
    parameters.setPrivacyContext(privacyContext)

    let host = url.host ?? ""
    let path = url.path.isEmpty ? "/" : url.path
    let query = url.query ?? ""
    let fullPath = query.isEmpty ? path : "\(path)?\(query)"

    let connection = NWConnection(
        to: .hostPort(
            host: .init(host),
            port: .init(integerLiteral: UInt16(url.port ?? 80))
        ),
        using: parameters
    )

    connection.stateUpdateHandler = { state in
        switch state {
        case .ready:
            print("Connected to proxy: \(proxyDetails[0])")

            let httpRequest = """
            GET \(fullPath) HTTP/1.1\r
            Host: \(host)\r
            Connection: close\r
            Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r
            User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0.1 Safari/605.1.15\r
            Accept-Language: en-US,en;q=0.9\r
            Accept-Encoding: gzip, deflate, br\r
            Sec-Fetch-Dest: document\r
            Sec-Fetch-Mode: navigate\r
            Sec-Fetch-Site: none\r
            Priority: u=0, i\r
            \r
            """

            connection.send(content: httpRequest.data(using: .utf8), completion: .contentProcessed({ error in
                if let error = error {
                    print("Failed to send request: \(error)")
                    completion(false)
                    return
                }

                // Read data until the connection is complete
                self.readAllData(connection: connection) { finalData, readError in
                    if let readError = readError {
                        print("Failed to receive response: \(readError)")
                        completion(false)
                        return
                    }

                    guard let data = finalData else {
                        print("No data received or unable to read data.")
                        completion(false)
                        return
                    }

                    if let body = String(data: data, encoding: .utf8) {
                        print("Received \(data.count) bytes")
                        print("\n\nBody is \(body)")
                        completion(true)
                    } else {
                        print("Unable to decode response body.")
                        completion(false)
                    }
                }
            }))

        case .failed(let error):
            print("Connection failed for proxy \(proxyDetails[0]): \(error)")
            completion(false)

        case .cancelled:
            print("Connection cancelled for proxy \(proxyDetails[0])")
            completion(false)

        case .waiting(let error):
            print("Connection waiting for proxy \(proxyDetails[0]): \(error)")
            completion(false)

        default:
            break
        }
    }

    connection.start(queue: .global())
}
private func readAllData(connection: NWConnection,
                         accumulatedData: Data = Data(),
                         completion: @escaping (Data?, Error?) -> Void) {
    
    connection.receive(minimumIncompleteLength: 1, maximumLength: 65536) { data, context, isComplete, error in
        
        if let error = error {
            completion(nil, error)
            return
        }
        
        // Append newly received data to what's been accumulated so far
        let newAccumulatedData = accumulatedData + (data ?? Data())

        if isComplete {
            // If isComplete is true, the server closed the connection or ended the stream
            completion(newAccumulatedData, nil)
        } else {
            // Still more data to read, so keep calling receive
            self.readAllData(connection: connection,
                             accumulatedData: newAccumulatedData,
                             completion: completion)
        }
    }
}

Sequência de solicitação correta

let httpRequest = "GET \("/51913883831/orders/f3ef2745f2b06c6b410e2aa8a6135847") HTTP/1.1\r\nHost: \("shop.ccs.com")\r\nConnection: close\r\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\nUser-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0.1 Safari/605.1.15\r\nAccept-Language: en-US,en;q=0.9\r\nAccept-Encoding: gzip, deflate, br\r\nSec-Fetch-Dest: document\r\nSec-Fetch-Mode: navigate\r\nSec-Fetch-Site: none\r\nPriority: u=0, i\r\n\r\n"