iOS开发-AsynSocket

    #import <UIKit/UIKit.h>

#import "AsyncSocket.h"  

@interface ViewController : UIViewController <AsyncSocketDelegate> {  
    NSMutableArray *_socketArray;  
    AsyncSocket *_sendSocket;//发送  
    AsyncSocket *_recvSocket;//接收  
}  
- (IBAction)sendClick:(id)sender;  
@property (retain, nonatomic) IBOutlet UITextField *ipField;  
@property (retain, nonatomic) IBOutlet UITextField *sendField;  
@property (retain, nonatomic) IBOutlet UITextView *msgView;  
- (IBAction)conClick:(id)sender;  
- (IBAction)sendClick:(id)sender;  
@end  </pre> 


 2.ViewController.m文件
    #import "ViewController.h"

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

- (void)viewDidLoad  
{  
    [super viewDidLoad];  

    //初始化socket数组，存放socket  
    _socketArray = [[NSMutableArray alloc] init];  

    //实例化客户端和服务器socket  
    _sendSocket = [[AsyncSocket alloc] initWithDelegate:self];  
    _recvSocket = [[AsyncSocket alloc] initWithDelegate:self];  

    //服务器段开始监听  
    [_recvSocket acceptOnPort:5566 error:nil];  
}  

//服务器端接收到新的socket  
- (void)onSocket:(AsyncSocket *)sock didAcceptNewSocket:(AsyncSocket *)newSocket {  
    //服务器端将收到的socket存入数组  
    [_socketArray addObject:newSocket];  
    //开始接收数据  
    [newSocket readDataWithTimeout:-1 tag:0];  
}  

//服务器端接收到信息  
- (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag {  
    NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];  
    self.msgView.text = [NSString stringWithFormat:@"%@%@:%@\n", self.msgView.text, sock.connectedHost, string];  
    [sock readDataWithTimeout:-1 tag:0];//循环  
}  

//连接  
- (IBAction)conClick:(id)sender {  
    if (_sendSocket.isConnected) {  
        [_sendSocket disconnect];  
    }  
    [_sendSocket connectToHost:self.ipField.text onPort:5566 withTimeout:30 error:nil];  
}  

//发送消息  
- (IBAction)sendClick:(id)sender {  
    NSData *data = [self.sendField.text dataUsingEncoding:NSUTF8StringEncoding];  
    [_sendSocket writeData:data withTimeout:30 tag:0];  
    self.sendField.text = @"";  
}  

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

- (void)onSocketDidDisconnect:(AsyncSocket *)sock  
{  
    NSLog(@"断开连接");  
}  



- (void)dealloc {  
    [ipField release];  
    [sendField release];  
    [msgView release];  
    [ipField release];  
    [super dealloc];  
}  

- (void)viewDidUnload {  
    [self setIpField:nil];  
    [super viewDidUnload];  
}  
@end  </pre>