iOS进阶2 -- CocoaAsyncSocket和Websocket框架使用

一、CocoaAsyncSocket部分
本部分转自：http://www.jianshu.com/p/68100d518468
客户端代码地址：https://github.com/edwardGG/SocketClient
服务端代码地址：https://github.com/edwardGG/SocketServer
CocoaAsyncSocket比较好的博客：
http://blog.youkuaiyun.com/zhu410289616/article/details/46731605
直接看代码：

1.客户端代码

#import "ViewController.h"
#import "GCDAsyncSocket.h"
@interface ViewController ()<GCDAsyncSocketDelegate>
@property (weak, nonatomic) IBOutlet UITextField *addressTF;
@property (weak, nonatomic) IBOutlet UITextField *portTF;
@property (weak, nonatomic) IBOutlet UITextField *messageTF;
@property (weak, nonatomic) IBOutlet UITextView *showMessageTF;
//客户端socket
@property (nonatomic) GCDAsyncSocket *clinetSocket;

@end

@implementation ViewController
#pragma mark - GCDAsynSocket Delegate
- (void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port{
    [self showMessageWithStr:@"链接成功"];
    [self showMessageWithStr:[NSString stringWithFormat:@"服务器IP ： %@", host]];
    [self.clinetSocket readDataWithTimeout:-1 tag:0];
}

//收到消息
- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{
    NSString *text = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    [self showMessageWithStr:text];
    [self.clinetSocket readDataWithTimeout:-1 tag:0];
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    [self.view endEditing:YES];
}

//开始连接
- (IBAction)connectAction:(id)sender {
    //2、连接服务器
    [self.clinetSocket connectToHost:self.addressTF.text onPort:self.portTF.text.integerValue withTimeout:-1 error:nil];
}

//发送消息
- (IBAction)sendMessageAction:(id)sender {
    NSData *data = [self.messageTF.text dataUsingEncoding:NSUTF8StringEncoding];
    //withTimeout -1 :无穷大
    //tag： 消息标记
    [self.clinetSocket writeData:data withTimeout:-1 tag:0];
}

//接收消息
- (IBAction)receiveMessageAction:(id)sender {
    [self.clinetSocket readDataWithTimeout:11 tag:0];
}

- (void)showMessageWithStr:(NSString *)str{
    self.showMessageTF.text = [self.showMessageTF.text stringByAppendingFormat:@"%@\n", str];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    //1、初始化
    self.clinetSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

说明：1.引入GCDAsyncSocket.h头文件
2.初始化GCDAsyncSocket对象，并设置代理
3.根据发出和接收到的信息进行处理。

2.服务端代码

#import "ViewController.h"
#import "GCDAsyncSocket.h"
@interface ViewController ()<GCDAsyncSocketDelegate>
@property (weak, nonatomic) IBOutlet UITextField *portF;
@property (weak, nonatomic) IBOutlet UITextField *messageTF;
@property (weak, nonatomic) IBOutlet UITextView *showContentMessageTV;

//服务器socket（开放端口，监听客户端socket的链接）
@property (nonatomic) GCDAsyncSocket *serverSocket;

//保护客户端socket
@property (nonatomic) GCDAsyncSocket *clientSocket;

@end

@implementation ViewController
#pragma mark - 服务器socket Delegate
- (void)socket:(GCDAsyncSocket *)sock didAcceptNewSocket:(GCDAsyncSocket *)newSocket{
   //保存客户端的socket
    self.clientSocket = newSocket;
    [self showMessageWithStr:@"链接成功"];
    [self showMessageWithStr:[NSString stringWithFormat:@"服务器地址：%@ -端口： %d", newSocket.connectedHost, newSocket.connectedPort]];
    [self.clientSocket readDataWithTimeout:-1 tag:0];
}

//收到消息
- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{
    NSString *text = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    [self showMessageWithStr:text];
    [self.clientSocket readDataWithTimeout:-1 tag:0];
}

//发送消息
- (IBAction)sendMessage:(id)sender {
    NSData *data = [self.messageTF.text dataUsingEncoding:NSUTF8StringEncoding];
    //withTimeout -1:无穷大，一直等
    //tag:消息标记
    [self.clientSocket writeData:data withTimeout:-1 tag:0];
}

//开始监听
- (IBAction)startReceive:(id)sender {
    //2、开放哪一个端口
    NSError *error = nil;
    BOOL result = [self.serverSocket acceptOnPort:self.portF.text.integerValue error:&error];
    if (result && error == nil) {
        //开放成功
        [self showMessageWithStr:@"开放成功"];
    }
}

//接受消息,socket是客户端socket，表示从哪一个客户端读取消息
- (IBAction)ReceiveMessage:(id)sender {
    [self.clientSocket readDataWithTimeout:11 tag:0];
}

- (void)showMessageWithStr:(NSString *)str{
    self.showContentMessageTV.text = [self.showContentMessageTV.text stringByAppendingFormat:@"%@\n",str];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    // 1、初始化服务器socket，在主线程力回调
    self.serverSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
    }

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

说明：客户端和服务端工程同时运行在模拟器上，客户端的IP地址要写自己电脑的，端口号要和服务端的相同。

二、Websocket部分

本部分转自：http://www.cocoachina.com/ios/20160527/16482.html
Websocket第三方开源框架：facebook的SocketRocket框架
github地址：https://github.com/facebook/SocketRocket