iOS：基于Socket的第三方框架CocoaAsyncSocket的使用

//  ViewController.h
//  AysnSocket

#import <UIKit/UIKit.h>
#import "AsyncSocket.h"

@interface ViewController : UIViewController
{
    NSMutableArray *_scokets;    //存放客户端的可变数组
    AsyncSocket *_sendSocket;    //发送端
    AsyncSocket *_receScoket;    //接收端
}
@end

//  ViewController.m
//  AysnSocket


#import "ViewController.h"
#import "AsyncSocket.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UITextView *msgView;
@property (weak, nonatomic) IBOutlet UITextField *ipField;
@property (weak, nonatomic) IBOutlet UITextField *sendField;
- (IBAction)coneClicked:(UIButton *)sender;     //连接服务器
- (IBAction)sendClicked:(UIButton *)sender;     //发送端发送消息
- (IBAction)disConeClicked:(UIButton *)sender;  //断开连接
@end

@implementation ViewController
@synthesize msgView;
@synthesize ipField;
@synthesize sendField;


- (void)viewDidLoad {
    [super viewDidLoad];
    
    //1.初始化scokets数组,存储新的客户端scoket
    _scokets = [NSMutableArray array];
    
    //2.实例化发送端和接收端
    _sendSocket = [[AsyncSocket alloc]initWithDelegate:self];
    _receScoket = [[AsyncSocket alloc]initWithDelegate:self];
    
    //3.接收端开始监听网络
    NSError *error;
    [_receScoket acceptOnPort:8888 error:&error];
}

#pragma mark - 代理方法
//接受到新的scoket
- (void)onSocket:(AsyncSocket *)sock didAcceptNewSocket:(AsyncSocket *)newSocket
{
    //将新接收到的socket加入数组中
    [_scokets addObject:newSocket];
    
    //开始接受数据
    [newSocket readDataWithTimeout:-1 tag:0];
}

//接收端收到信息
- (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag
{
    //接收数据
    NSString *string = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
    
    //格式化数据
    self.msgView.text = [NSString stringWithFormat:@"%@,%@,%@",self.msgView.text,self.ipField.text,string];
    
    //循环读取
    [sock readDataWithTimeout:-1 tag:0];
}

//连接服务器成功
- (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port
{
    NSLog(@"%@",host);
    NSLog(@"连接服务器成功");
}

//断开服务器成功
-(void)onSocketDidDisconnect:(AsyncSocket *)sock
{
    NSLog(@"断开连接成功");
}

#pragma mark - 按钮事件
//建立连接
- (IBAction)coneClicked:(UIButton *)sender {
    
    if (_sendSocket.isConnected)
    {
        [_sendSocket disconnect];
    }
    
    //客户端重新连接到主机
    [_sendSocket connectToHost:self.ipField.text onPort:8888 withTimeout:30 error:nil];
}

//发送消息
- (IBAction)sendClicked:(UIButton *)sender {
    
    //客户端发送数据
    NSData *data = [self.sendField.text dataUsingEncoding:NSUTF8StringEncoding];
    [_sendSocket writeData:data withTimeout:30 tag:0];
    
    //清空数据
    self.sendField.text = @"";
}

//断开服务器
- (IBAction)disConeClicked:(UIButton *)sender
{
    if (_sendSocket.isConnected)
    {
        [_sendSocket disconnect];
    }
}
@end