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());
}
}
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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
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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);<br><br>
|
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;
}
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本文转自lpxxn博客园博客，原文链接：http://www.cnblogs.com/li-peng/archive/2012/11/21/2780647.html，如需转载请自行联系原作者
