ios 接收 c# socket udp 组播

最近用wcf 服务 给ios和安卓做接口,做了几个ios的项目  用udp 组播 让ios多终端接收和刷新方法

做一个简单的小例子会把工程给大家下载的

  c#代码:netSocketUDP.rar

     ios代码:MyIOSSocketDemo.rar

先用c#做发送

组播IP范围为 224.0.0.0~239.255.255.255

建一个控制台应用程序

private static IPAddress GropuAddress = IPAddress.Parse("224.0.0.2");//IP
        private static int GrupPort = 12001;//端口
        static void Main(string[] args)
        {
            for (int i = 0; i < 1000; i++)
            {
                System.Threading.Thread.Sleep(3000);//等待3秒再发
                Send("sendMessage"+i.ToString()+"个!");
            }
        }
        public static void Send(string message)
        {

        //不在一个网段也可以收到

        Socket server = new Socket(AddressFamily.InterNetwork,
        SocketType.Dgram, ProtocolType.Udp);
        IPEndPoint iep = new IPEndPoint(IPAddress.Any, 12002);
        IPEndPoint iep2 = new IPEndPoint(IPAddress.Parse("224.0.0.2"), 12001);
        server.Bind(iep);

        byte[] data = Encoding.ASCII.GetBytes(message);
        server.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership,
        new MulticastOption(IPAddress.Parse("224.100.0.1")));
        server.SetSocketOption(SocketOptionLevel.IP,SocketOptionName.MulticastTimeToLive, 50);
        server.SendTo(data, iep2);
        server.Close();

               }

  顺便把c#接收也说一下(这个可以不用看,因为我们要做的是ios接收)

        static void Main(string[] args)
        {
            StartListener();           
            Console.ReadLine();
        }
        private static void StartListener()
        {
            byte[] b = new byte[10240];
            try
            {
                while (true)
                {
                    System.Threading.Thread.Sleep(500);
                    String multiAddress = "224.0.0.2";//Datagrams.getMultiIPAddress("192.168.2.106");
                    Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
                    IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 12001);
                    s.Bind(ipep);
                    IPAddress ip = IPAddress.Parse(multiAddress);
                    s.SetSocketOption(SocketOptionLevel.IP,
                        SocketOptionName.AddMembership,
                            new MulticastOption(ip, IPAddress.Any));

                    s.ReceiveTimeout = 5000;
                    s.Receive(b);
                    string sss = System.Text.Encoding.UTF8.GetString(b).Replace("\0", "").Trim();
                    Console.WriteLine(sss);
                    s.Close();
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("receive multicast exception:" + ex.ToString());

            }
        }

  

 

ios接收

ios 用到的一个类库AsyncUdpSocket 这个类库就是发送和接收收  组播的 用起来很方便网上有好多例子我就简单说一下

建一个Single View Application

把AsyncUdpSocket.h 和AsyncUdpSocket.m加到工程里

窗体上放一个文本显示收到的信息

在ViewController.h里加入

#import "AsyncUdpSocket.h"
@interface ViewController : UIViewController<AsyncUdpSocketDelegate>

  

@property (strong, nonatomic) IBOutlet UITextField *MyResaveTxt;//页面上的文本
@property (nonatomic,strong) AsyncUdpSocket *udpSocket;
-(void)openUDPServer;

在ViewController.m 里实现

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController
@synthesize udpSocket,MyResaveTxt;
- (void)viewDidLoad
{
    [super viewDidLoad];
    [self openUDPServer];
    
	// Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
-(void) openUDPServer
{
    //初始化udp
    AsyncUdpSocket *tempSocket=[[AsyncUdpSocket alloc] initWithDelegate:self];
    self.udpSocket=tempSocket;
	
    //绑定端口
    NSError *error = nil;
    [self.udpSocket bindToPort:12001 error:&error];
    
    //发送广播设置
    [self.udpSocket enableBroadcast:YES error:&error];
    
    //加入群里,能接收到群里其他客户端的消息
    [self.udpSocket joinMulticastGroup:@"224.0.0.2" error:&error];
    
    //启动接收线程
    [self.udpSocket receiveWithTimeout:-1 tag:0];
    
}
//接收
-(BOOL) onUdpSocket:(AsyncUdpSocket *)sock didReceiveData:(NSData *)data withTag:(long)tag fromHost:(NSString *)host port:(UInt16)port
{
    NSString * info=[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    MyResaveTxt.text=info;
    [self.udpSocket receiveWithTimeout:-1 tag:0];//启动接收线程
    return YES;
}
@end

  c#代码:netSocketUDP.rar

     ios代码:MyIOSSocketDemo.rar

补一下发汉字会有乱码

 c#用

byte[] data =System.Text.Encoding.Default.GetBytes(message);

ios用

 NSStringEncoding strEncode = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);
    NSString * info=[[NSString alloc] initWithData:data encoding:strEncode ];

 

ios  URL中文转码

方法1

    NSString *url =@"www.haha.com/这是中文";
    NSStringEncoding chineseEncoding = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);
    
    url = [url stringByAddingPercentEscapesUsingEncoding:chineseEncoding];
    
    NSLog(@"%@",url);

    NSMutableURLRequest *request = [[NSMutableURLRequestalloc] init];

            // 设置URL

            [request setURL:[NSURL URLWithString:url]];

            // 设置HTTP方法

            [request setHTTPMethod:@"GET"];

            // 发送同步请求, 这里得returnData就是返回得数据

            NSData *data = [NSURLConnectionsendSynchronousRequest:request

                                                       returningResponse:nil error:nil]; 

            

方法2

- (NSString *)URLEncodedString

{ 

    NSString *result = (NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,(CFStringRef)self,NULL,CFSTR("!*'();:@&=+$,/?%#[]"),kCFStringEncodingUTF8);

    [result autorelease];

    return result; 

}

  

posted @ 2012-11-21 14:23  li-peng  阅读(...)  评论(...编辑  收藏