CFSocket(客户端）

转自：http://hi.baidu.com/nodream7/item/87132713c469c9443a176edc 

CFSocketRef _socket;

-(void)Connect

{

    //创建套接字//

    CFSocketContext CTX = {0,NULL,NULL,NULL,NULL};

    _socket = CFSocketCreate(

                                kCFAllocatorDefault,

                                PF_INET,

                                SOCK_STREAM,

                                IPPROTO_TCP,

                                kCFSocketConnectCallBack,     // 类型，表示连接时调用

                                ServerConnectCallBack,    // 调用的函数

             )

 

      设置地址///

   NSString *serverAddr = @"192.168.0.110";

   struct   sockaddr_in  addr

   memset(&addr , 0,sizeof(addr));

   addr.sin_len = sizeof(addr);

   addr.sin_family = AF_INET;

   addr.sin_port = htons(12345);

   addr.sin_addr.s_addr = inet_addr([serverAddr  UTF8String]);

 

    CFDataRef address = CFDataCreate(

                                        kCFAllocatorDefault,

                                         (UInt8*)&addr,

                                         sizeof(addr));

 

     /执行连接/

 

    CFSocketConnectToAddress(_socket,address,-1);

    CFRunLoopRef cfrl = CFRunLoopGetCurrent();   // 获取当前运行循环

    CFRunLoopSourceRef  source = CFSocketCreateRunLoopSource(kCFAllocatorDefault,_socket,0);//定义循环对象

    CFRunLoopAddSource(cfrl,source,kCFRunLoopCommonModes); //将循环对象加入当前循环中

    CFRelease(source);

}

 

static void ServerConnectCallBack（

                                 CFSocketRef socket,

                                 CFSocketCallBackType type,

                                 CFDataRef address,

                                 const void *data,

                                 void * info）

{

    if(data != NULL)

   {

            printf("connect").//服务器那边已经提过，连接事件时该指针用于存放报错

   }

   else

   {

          printf("connect success");

    }

}

///监听来自服务器的信息///

-(void)ReadStream

{

       char buffer[255];

       while(recv( CFSocektGetNative(_socket),buffer,sizeof(buffer),0))

       {

             printf(buffer);

       } 

 

}

/发送信息给服务器

- (void) sendMessage

{
 NSString *stringToSend = @"Overlord,this is Hunter21";
 const char *data = [stringToSend UTF8String];
 send(CFSocketGetNative(_socket), data, strlen(data) + 1, 0);
 }