AsyncSocket 使用

　　今天使用AsyncSocket模拟及时通信，在这里记录一下，免得以后自己又犯相同的错误

　　1>创建客户端和服务器socket

 1 /**

 2  *  设置socket

 3  */

 4 - (void)setupSocket

 5 {

 6     //1.客户端socket

 7     _clientSocket = [[AsyncSocket alloc] initWithDelegate:self];

 8     //2. 启用定时器连接服务器

 9     

10     [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(tryToConnect:) userInfo:nil repeats:YES];

11     

12     //3.实例化服务器

13     _serverSocket = [[AsyncSocket alloc] initWithDelegate:self];

14     

15     [_serverSocket acceptOnPort:8888 error:nil];

16 }

　　定时器代码：

 1 - (void)tryToConnect:(NSTimer *)timer

 2 {

 3     if ([_clientSocket isConnected]) {

 4         [timer invalidate];

 5         return;

 6     }

 7     NSString *host = @"10.0.185.132";

 8     UInt16 port = 8080;

 9     [_clientSocket connectToHost:host onPort:port withTimeout:-1 error:nil];

10 }

　　2>实现协议回调方法

 1 #pragma mark - socket协议

 2 

 3 - (void)onSocket:(AsyncSocket *)sock didAcceptNewSocket:(AsyncSocket *)newSocket

 4 {

 5     NSLog(@"接收到新的socket连接");

 6     [_connectArray addObject:newSocket];

 7     [newSocket readDataWithTimeout:-1 tag:300];

 8 }

 9 /*

10  * 客户端连接服务器失败时的回调

11  */

12 - (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err

13 {

14     NSLog(@"客户端连接失败，错误信息：%@", [err localizedDescription]);

15 }

16 

17 /*

18  * 客户端连接服务器成功时的回调

19  */

20 - (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port

21 {

22     NSLog(@"客户端连接成功：host:%@ port :%d", host, port);

23 }

24 

25 //接收客户端发送过来的数据

26 

27 - (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag

28 {

29     NSString *message =[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

30 

31     [self sendMessage:message messageType:MessageTypeOther];

32     

33     //特别注意这句话一定要写，不然只会读取第一条数据，写这句话表示不停的等待读取数据

34     [sock readDataWithTimeout:-1 tag:300];

35 }

　　3>发送信息

 1 NSData *data = [text dataUsingEncoding:NSUTF8StringEncoding];

 2     

 3     //发送消息

 4     if ([_clientSocket isConnected]) {

 5         [_clientSocket writeData:data withTimeout:60 tag:100];

 6         

 7     }else{

 8         NSLog(@"连接断开");

 9         //尝试重新连接

10         [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(tryToConnect:) userInfo:nil repeats:YES];

11     }