import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var dataPassed: UILabel!

    func echoService(client c:TCPClient){
        print("newclient from:\(c.addr)[\(c.port)]")
        let d=c.read(1024*10)
        print(d!)
        c.send(data: d!)

        if let str=String(bytes: d!, encoding: NSUTF8StringEncoding){
            print("message received from client :", str)

            dispatch_async(dispatch_get_main_queue(), {
                self.dataPassed.text = str
            })

        }


        c.close()
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        let server:TCPServer = TCPServer(addr: "192.168.1.20", port: 2401)
        let (success,msg)=server.listen()

        if success{
            while true{
                if let client=server.accept(){
                    echoService(client: client)

                }else
                {
                    print("accept error")
                }
            }
        }
        else
        {
            print(msg)
        }

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}