iOS开发-AsynUdpSocket

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导入AsynSocket库，导入CFNetwork系统库

1.新建一个single view工程

ViewController.h文件

#import <UIKit/UIKit.h>#import "AsyncUdpSocket.h"@interface ViewController : UIViewController <AsyncUdpSocketDelegate> {    AsyncUdpSocket *_sendSocket;    AsyncUdpSocket *_recvSocket;}@property (retain, nonatomic) IBOutlet UITextField *ipField;@property (retain, nonatomic) IBOutlet UITextField *sendField;@property (retain, nonatomic) IBOutlet UITextView *msgView;- (IBAction)sendClick:(id)sender;@end

2.ViewController.m文件

#import "ViewController.h"@implementation ViewController@synthesize ipField;@synthesize sendField;@synthesize msgView;- (void)viewDidLoad{    [super viewDidLoad];    _sendSocket = [[AsyncUdpSocket alloc] initWithDelegate:self];    [_sendSocket bindToPort:5555 error:nil];        _recvSocket = [[AsyncUdpSocket alloc] initWithDelegate:self];    [_recvSocket bindToPort:6666 error:nil];    [_recvSocket receiveWithTimeout:-1 tag:0];}- (BOOL)onUdpSocket:(AsyncUdpSocket *)sock didReceiveData:(NSData *)data withTag:(long)tag fromHost:(NSString *)host port:(UInt16)port {    NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];    self.msgView.text = [NSString stringWithFormat:@"%@%@:%@\n", self.msgView.text, host, string];    [_recvSocket receiveWithTimeout:-1 tag:0];    return YES;}- (IBAction)sendClick:(id)sender {    NSData *data = [self.sendField.text dataUsingEncoding:NSUTF8StringEncoding];    [_sendSocket sendData:data toHost:self.ipField.text port:6666 withTimeout:30 tag:0];    self.msgView.text = [NSString stringWithFormat:@"%@我说:%@\n", self.msgView.text, self.sendField.text];    self.sendField.text = @"";}- (void)dealloc {    [ipField release];    [sendField release];    [msgView release];    [super dealloc];}@end

3.ViewController.xib文件

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