ios socket(基础demo)

http://blog.sina.com.cn/s/blog_7a2f0a830101ecv4.html

clinetSocket 

1、viewcontroller.h
@interface ViewController : UIViewController<</span>GCDAsyncSocketDelegate,UITextFieldDelegate>

{

    GCDAsyncSocket *socket;

}

@property(strong)  GCDAsyncSocket *socket

@property (strong, nonatomic) IBOutlet UITextField *host;

@property (strong, nonatomic) IBOutlet UITextField *message;

@property (strong, nonatomic) IBOutlet UITextField *port;

@property (strong, nonatomic) IBOutlet UITextView *status;

- (IBAction)connect:(id)sender;

- (IBAction)send:(id)sender;

@end

viewcontroller.m

//连接服务器

- (IBAction)connect:(id)sender {

    socket = [[GCDAsyncSocket alloc]initWithDelegate:self delegateQueue:dispatch_get_main_queue()]; 

    socket.delegate = self;

    NSError *err = nil;

    BOOL connState=[socket connectToHost:host.text onPort:[port.text intValue] error:&err];

    if(!connState)

    { 

        [self addText:err.description];

    }else

    {

        NSLog(@"连接服务器：%@ 成功",host.text);

        [self addText:@"打开端口"];

    }

}

-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port

{

    [self addText:[NSString stringWithFormat:@"连接到:%@",host]];

    [socket readDataWithTimeout:-1 tag:0];

}

- (void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err

{

    NSLog(@"socket did is connect:%@",err);

}

//发送数据

- (IBAction)send:(id)sender {

    [socket writeData:[message.text dataUsingEncoding:NSUTF8StringEncoding] withTimeout:-1 tag:0];

    [self addText:[NSString stringWithFormat:@"发送的数据:%@",message.text]];

    [message resignFirstResponder];

    [socket readDataWithTimeout:-1 tag:0];

}

//读取服务器获取的数据

-(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag

{

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

    [self addText:[NSString stringWithFormat:@"服务器：%@:%@",sock.connectedHost,newMessage]];

    [socket readDataWithTimeout:-1 tag:0];

} 

#pragma mark - View lifecycle

-(void)addText:(NSString *)str

{

    status.text = [status.text stringByAppendingFormat:@"%@\n",str];

}

- (void)viewDidLoad

{

    [super viewDidLoad];

    //设置默认的服务器地址和端口

    host.text = @"192.168.2.107";

    port.text = @"54321";    

// Do any additional setup after loading the view, typically from a nib.

}

2、serviceSocket

1、appdelegate.h

#import "GCDAsyncSocket.h"

#import "GCDAsyncUdpSocket.h"

@interface AppDelegate : NSObject <</span>NSApplicationDelegate,GCDAsyncSocketDelegate,GCDAsyncUdpSocketDelegate>

{

    GCDAsyncSocket *socket;

    GCDAsyncSocket *s;

}

@property(strong)  GCDAsyncSocket *socket;

- (IBAction)listen:(id)sender;

@property (unsafe_unretained) IBOutlet NSTextView *status;

@property (unsafe_unretained) IBOutlet NSTextField *port;

@property (unsafe_unretained) IBOutlet NSTextField *host;

@property (assign) IBOutlet NSWindow *window;

2、appdelegate.m

@implementation AppDelegate

@synthesize status;

@synthesize port;

@synthesize host;

@synthesize window = _window;

@synthesize socket;

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification

{

    //服务器的端口号

    port.stringValue = @"54321";

}

-(void)addText:(NSString *)str

{

    status.string = [status.string stringByAppendingFormat:@"%@\n",str];

}

//开始监听

- (IBAction)listen:(id)sender {    

    NSLog(@" begin listen");

    socket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];

    NSError *err = nil;

    if(![socket acceptOnPort:[port integerValue] error:&err]) 

    { 

        [self addText:err.description];

    }else

    {

        [self addText:[NSString stringWithFormat:@"开始监听%d端口.",port.integerValue]];

    }

}

- (void)socket:(GCDAsyncSocket *)sender didAcceptNewSocket:(GCDAsyncSocket *)newSocket

{

    // The "sender" parameter is the listenSocket we created.

    // The "newSocket" is a new instance of GCDAsyncSocket.

    // It represents the accepted incoming client connection.

    // Do server stuff with newSocket...

    [self addText:[NSString stringWithFormat:@"建立与%@的连接",newSocket.connectedHost]];

    s = newSocket;

    s.delegate = self;

    [s readDataWithTimeout:-1 tag:0];

}

//向客户端写数据

-(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag

{

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

    [self addText:[NSString stringWithFormat:@"%@:%@",sock.connectedHost,receive]]; 

    NSString *reply = [NSString stringWithFormat:@"服务器收到:%@",receive];

    [s writeData:[reply dataUsingEncoding:NSUTF8StringEncoding] withTimeout:-1 tag:0];

    [s readDataWithTimeout:-1 tag:0];

}

@end