// Create a socket connect to www.apple.com and port at 80
let client = TCPClient(address: "www.apple.com", port: 80)

 switch client.connect(timeout: 10) {
   case .success:
     // Connection successful 🎉
   case .failure(let error):
     // 💩
 }

let data: Data = // ... Bytes you want to send
let result = client.send(data: data)

var data = client.read(1024*10) //return optional [Int8]

client.close()

let client = TCPClient(address: "www.apple.com", port: 80)
switch client.connect(timeout: 1) {
  case .success:
    switch client.send(string: "GET / HTTP/1.0\n\n" ) {
      case .success:
        guard let data = client.read(1024*10) else { return }
        if let response = String(bytes: data, encoding: .utf8) {
          print(response)
        }
      case .failure(let error):
        print(error)
    }
  case .failure(let error):
    print(error)
}

func echoService(client: TCPClient) {
    print("Newclient from:\(client.address)[\(client.port)]")
    var d = client.read(1024*10)
    client.send(data: d!)
    client.close()
}
func testServer() {
    let server = TCPServer(address: "127.0.0.1", port: 8080)
    switch server.listen() {
      case .success:
        while true {
            if var client = server.accept() {
                echoService(client: client)
            } else {
                print("accept error")
            }
        }
      case .failure(let error):
        print(error)
    }
}