swift -> AsyncSocket 建立 tcp socket 连接

下載位置:https://github.com/robbiehanson/CocoaAsyncSocket

使用 AsyncSocket.h 及 AsyncSocket.m

因為專案是 swift 專案，要使用 objecitive-c 的函式庫要在 Header 檔中 import。

1. 複製 AsyncSocket.m 及 AsyncSocket.h 到專案中，xcode 會問你是否建立 Bridge file，確定建立。

2. 在 你的專案名稱-Bridging-Header.h 檔中加入：

1	# import  "AsyncSocket.h"

ViewControler.swift

//
//  ViewController.swift
//  weixin_t1
//
//  Created by  on 16/5/8.
//  Copyright © 2016年 . All rights reserved.
//

import UIKit

class ViewController: UIViewController,AsyncSocketDelegate  {
    //手动发送
    @IBAction func btn_send(sender: UIButton) {
        let bytearr:[UInt8] = [5,6,7];
        let data: NSData = NSData(bytes: bytearr, length: bytearr.count);
        //send data
        socket.writeData(data, withTimeout: 0, tag: 0);
        print("has send hand");
        //开始监听接收，并如10秒内无消息回复就自动断开连接，只接收一次,
        socket.readDataWithTimeout(10, tag: 0);
        //如果设置超时为-1 则没有超时限制
        //socket.readDataWithTimeout(-1, tag: 0);
    }
 
    //手动断开
    @IBAction func btn_discon(sender: UIButton) {
        socket.disconnect();
        print("手动点击了断开");
        
    }
    //手动连接
    @IBAction func btn_conn(sender: UIButton) {
        socket = AsyncSocket(delegate: self);
        do{
            try socket.connectToHost("192.168.1.102", onPort: 60000);
        }catch let error as NSError{
            print(error);
        }
        print("连接成功");
    }
    
    
    
    var socket: AsyncSocket!;

    override func viewDidLoad() {
        super.viewDidLoad();
  
        
        // Do any additional setup after loading the view, typically from a nib.
    }
    
    //当连接建立后调用
    func onSocket(sock: AsyncSocket!, didConnectToHost host: String!, port: UInt16) {
 
        print("has connect");
        
    }
    
    //当有回调调用
    func onSocket(sock: AsyncSocket!, didReadData data: NSData!, withTag tag: Int) {
        print("has receive");
        print("data:\(data.length)");
        //如果不能一次接收完还有更多的
        socket.readDataWithTimeout(10, tag: 0);
        //如果设置超时为-1 则没有超时限制
        //socket.readDataWithTimeout(-1, tag: 0);
    }
    
    //当断开连接调用
    func onSocketDidDisconnect(sock: AsyncSocket!) {
        print("has disconnect");
    }
 

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


}