Swift HTTP over Network framework

RawHTTP.swift

import Network

let host: NWEndpoint.Host = .init("httpbin.org")
let port: NWEndpoint.Port = .https
let tlsConfig: NWProtocolTLS.Options = .init()
let parameters: NWParameters = .init(tls: tlsConfig)
let connection: NWConnection = .init(host: host, port: port, using: parameters)
connection.stateUpdateHandler = { state in
    print("State Update: \(state)")
}

connection.start(queue: DispatchQueue.global())

let method = "GET"
let uri = "/"
let httpVersion = "HTTP/1.1"
let headers = "Host: httpbin.org\r\n"
let body = ""
let rawHTTPRequest = "\(method) \(uri) \(httpVersion)\r\n\(headers)\r\n\(body)"
connection.send(content: rawHTTPRequest.data(using: .ascii), completion: .contentProcessed({ error in
    print("Processed, error: \(error)")
    connection.receiveMessage { data, _, completed, error in
        if let data = data {
            print("Response: \(String(data: data, encoding: .ascii)), completed: \(completed), error: \(error)")
        } else {
            print("Response: nil, completed: \(completed), error: \(error)")
        }
    }
}))