iPhone的Socket编程使用开源代码之AsyncSocket

假如你也是一个java程序员，而你又不是很懂Socket。

下面我的这篇文章也许能帮助你一些。

http://xiva.iteye.com/blog/993336

 

首先我们写好上面文章中的server端。

下面我们可以访问一下下面的地址：

 

http://code.google.com/p/cocoaasyncsocket/

这是一个开源框架。呵，不知道拿到自己程序中使用是否涉及侵权。

但是这句话“The CocoaAsyncSocket project is in the public domain.”是我有信心使用它们的源码，否则只能自己用c来写了，或者使用CFSocket、CFNetwork等类自己来写了。不过也无妨，应在在使用线程的情况下，我们也是可以实现的。

 

总之，为了开发的便捷，我使用了AsyncSocket这个类，这样可以异步通信。

 

建立一个基于视图的应用程序，按照http://code.google.com/p/cocoaasyncsocket/wiki/Reference_AsyncSocket

我们AsyncSocket.h和AsyncSocket.m到我们的项目中，并且导入CFNetwork.framework。这样基本准备工作就做好了。

 

下面提供我的应用中的代码以及界面图：

 

Socketdemoviewcontroller.h代码 复制代码 收藏代码
  1. //   
  2. //  SocketDemoViewController.h   
  3. //  SocketDemo   
  4. //   
  5. //  Created by xiang xiva on 10-7-10.   
  6. //  Copyright 2010 __MyCompanyName__. All rights reserved.   
  7. //   
  8.   
  9. #import <UIKit/UIKit.h>   
  10. #import "AsyncSocket.h"  
  11. #define SRV_CONNECTED 0  
  12. #define SRV_CONNECT_SUC 1  
  13. #define SRV_CONNECT_FAIL 2  
  14. #define HOST_IP @"192.168.110.1"  
  15. #define HOST_PORT 8080  
  16.   
  17. @interface SocketDemoViewController : UIViewController {   
  18.        
  19.     UITextField *inputMsg;   
  20.     UILabel *outputMsg;   
  21.     AsyncSocket *client;   
  22. }   
  23.   
  24. @property (nonatomic, retain) AsyncSocket *client;   
  25. @property (nonatomic, retain) IBOutlet UITextField *inputMsg;   
  26. @property (nonatomic, retain) IBOutlet UILabel *outputMsg;   
  27.   
  28. - (int) connectServer: (NSString *) hostIP port:(int) hostPort;   
  29. - (void) showMessage:(NSString *) msg;   
  30. - (IBAction) sendMsg;   
  31. - (IBAction) reConnect;   
  32. - (IBAction) textFieldDoneEditing:(id)sender;   
  33. - (IBAction) backgroundTouch:(id)sender;   
  34.   
  35. @end  
//
//  SocketDemoViewController.h
//  SocketDemo
//
//  Created by xiang xiva on 10-7-10.
//  Copyright 2010 __MyCompanyName__. All rights reserved.
//

#import <UIKit/UIKit.h>
#import "AsyncSocket.h"
#define SRV_CONNECTED 0
#define SRV_CONNECT_SUC 1
#define SRV_CONNECT_FAIL 2
#define HOST_IP @"192.168.110.1"
#define HOST_PORT 8080

@interface SocketDemoViewController : UIViewController {
	
	UITextField *inputMsg;
	UILabel *outputMsg;
	AsyncSocket *client;
}

@property (nonatomic, retain) AsyncSocket *client;
@property (nonatomic, retain) IBOutlet UITextField *inputMsg;
@property (nonatomic, retain) IBOutlet UILabel *outputMsg;

- (int) connectServer: (NSString *) hostIP port:(int) hostPort;
- (void) showMessage:(NSString *) msg;
- (IBAction) sendMsg;
- (IBAction) reConnect;
- (IBAction) textFieldDoneEditing:(id)sender;
- (IBAction) backgroundTouch:(id)sender;

@end
 

 

 

socketdemoviewcontroller.m代码 复制代码 收藏代码
  1. //   
  2. //  SocketDemoViewController.m   
  3. //  SocketDemo   
  4. //   
  5. //  Created by xiang xiva on 10-7-10.   
  6. //  Copyright 2010 __MyCompanyName__. All rights reserved.   
  7. //   
  8.   
  9. #import "SocketDemoViewController.h"  
  10.   
  11. @implementation SocketDemoViewController   
  12.   
  13. @synthesize inputMsg, outputMsg;   
  14. @synthesize client;   
  15. /*   
  16. // The designated initializer. Override to perform setup that is required before the view is loaded.   
  17. - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {   
  18.     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];   
  19.     if (self) {   
  20.         // Custom initialization   
  21.     }   
  22.     return self;   
  23. }   
  24. */   
  25.   
  26. /*   
  27. // Implement loadView to create a view hierarchy programmatically, without using a nib.   
  28. - (void)loadView {   
  29. }   
  30. */   
  31.   
  32.   
  33.   
  34. // Implement viewDidLoad to do additional setup after loading the view, typically from a nib.   
  35. - (void)viewDidLoad {   
  36.     //[super viewDidLoad];   
  37.     [self connectServer:HOST_IP port:HOST_PORT];   
  38.     //监听读取   
  39.        
  40. }   
  41.   
  42.   
  43.   
  44. // Override to allow orientations other than the default portrait orientation.   
  45. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {   
  46.     return YES;   
  47. }   
  48.   
  49. - (void)didReceiveMemoryWarning {   
  50.     // Releases the view if it doesn't have a superview.   
  51.     [super didReceiveMemoryWarning];   
  52.        
  53.     // Release any cached data, images, etc that aren't in use.   
  54. }   
  55.   
  56. - (void)viewDidUnload {   
  57.     self.client = nil;   
  58.     // Release any retained subviews of the main view.   
  59.     // e.g. self.myOutlet = nil;   
  60. }   
  61.   
  62. - (int) connectServer: (NSString *) hostIP port:(int) hostPort{   
  63.        
  64.     if (client == nil) {   
  65.         client = [[AsyncSocket alloc] initWithDelegate:self];   
  66.         NSError *err = nil;   
  67.         //192.168.110.128  
  68.         if (![client connectToHost:hostIP onPort:hostPort error:&err]) {   
  69.             NSLog(@"%@ %@", [err code], [err localizedDescription]);   
  70.                
  71.             UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[@"Connection failed to host "    
  72.                                             stringByAppendingString:hostIP]    
  73.                                                             message:[[[NSString alloc]initWithFormat:@"%@",[err code]] stringByAppendingString:[err localizedDescription]]    
  74.                                                            delegate:self    
  75.                                                   cancelButtonTitle:@"OK"  
  76.                                                   otherButtonTitles:nil];   
  77.             [alert show];   
  78.             [alert release];   
  79.             //client = nil;   
  80.             return SRV_CONNECT_FAIL;   
  81.         } else {   
  82.             NSLog(@"Conectou!");   
  83.             return SRV_CONNECT_SUC;   
  84.         }   
  85.     }   
  86.     else {   
  87.         [client readDataWithTimeout:-1 tag:0];   
  88.         return SRV_CONNECTED;   
  89.     }   
  90.        
  91. }   
  92.   
  93. - (IBAction) reConnect{   
  94.     int stat = [self connectServer:HOST_IP port:HOST_PORT];   
  95.     switch (stat) {   
  96.         case SRV_CONNECT_SUC:   
  97.             [self showMessage:@"connect success"];   
  98.             break;   
  99.         case SRV_CONNECTED:   
  100.             [self showMessage:@"It's connected,don't agian"];   
  101.             break;   
  102.         default:   
  103.             break;   
  104.     }   
  105. }   
  106.   
  107. - (IBAction) sendMsg{   
  108.        
  109.     NSString *inputMsgStr = self.inputMsg.text;   
  110.     NSString * content = [inputMsgStr stringByAppendingString:@"\r\n"];   
  111.     NSLog(@"%a",content);   
  112.     NSData *data = [content dataUsingEncoding:NSISOLatin1StringEncoding];   
  113.     [client writeData:data withTimeout:-1 tag:0];   
  114.        
  115.     //[data release];   
  116.     //[content release];   
  117.     //[inputMsgStr release];   
  118.     //继续监听读取   
  119.     //[client readDataWithTimeout:-1 tag:0];   
  120. }   
  121.   
  122. #pragma mark -   
  123. #pragma mark close Keyboard   
  124. - (IBAction) textFieldDoneEditing:(id)sender{   
  125.     [sender resignFirstResponder];   
  126. }   
  127.   
  128. - (IBAction) backgroundTouch:(id)sender{   
  129.     [inputMsg resignFirstResponder];   
  130. }   
  131.   
  132. #pragma mark socket uitl   
  133.   
  134. - (void) showMessage:(NSString *) msg{   
  135.     UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"Alert!"  
  136.                                                     message:msg   
  137.                                                    delegate:nil   
  138.                                           cancelButtonTitle:@"OK"  
  139.                                           otherButtonTitles:nil];   
  140.     [alert show];   
  141.     [alert release];   
  142. }   
  143.   
  144.   
  145. #pragma mark socket delegate   
  146.   
  147. - (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port{   
  148.     [client readDataWithTimeout:-1 tag:0];   
  149. }   
  150.   
  151. - (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err   
  152. {   
  153.     NSLog(@"Error");   
  154. }   
  155.   
  156. - (void)onSocketDidDisconnect:(AsyncSocket *)sock   
  157. {   
  158.     NSString *msg = @"Sorry this connect is failure";   
  159.     [self showMessage:msg];   
  160.     [msg release];   
  161.     client = nil;   
  162. }   
  163.   
  164. - (void)onSocketDidSecure:(AsyncSocket *)sock{   
  165.        
  166. }   
  167.   
  168. - (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{   
  169.        
  170.     NSString* aStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];   
  171.     NSLog(@"Hava received datas is :%@",aStr);   
  172.     self.outputMsg.text = aStr;   
  173.     [aStr release];   
  174.     [client readDataWithTimeout:-1 tag:0];   
  175. }   
  176.   
  177. #pragma mark dealloc   
  178.   
  179. - (void)dealloc {   
  180.        
  181.     [client release];   
  182.     [inputMsg release];   
  183.     [outputMsg release];   
  184.     [super dealloc];   
  185. }   
  186.   
  187. @end  
//
//  SocketDemoViewController.m
//  SocketDemo
//
//  Created by xiang xiva on 10-7-10.
//  Copyright 2010 __MyCompanyName__. All rights reserved.
//

#import "SocketDemoViewController.h"

@implementation SocketDemoViewController

@synthesize inputMsg, outputMsg;
@synthesize client;
/*
// The designated initializer. Override to perform setup that is required before the view is loaded.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}
*/

/*
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
}
*/



// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    //[super viewDidLoad];
	[self connectServer:HOST_IP port:HOST_PORT];
	//监听读取
	
}



// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;
}

- (void)didReceiveMemoryWarning {
	// Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
	
	// Release any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
	self.client = nil;
	// Release any retained subviews of the main view.
	// e.g. self.myOutlet = nil;
}

- (int) connectServer: (NSString *) hostIP port:(int) hostPort{
	
	if (client == nil) {
		client = [[AsyncSocket alloc] initWithDelegate:self];
		NSError *err = nil;
		//192.168.110.128
		if (![client connectToHost:hostIP onPort:hostPort error:&err]) {
			NSLog(@"%@ %@", [err code], [err localizedDescription]);
			
			UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[@"Connection failed to host " 
											stringByAppendingString:hostIP] 
															message:[[[NSString alloc]initWithFormat:@"%@",[err code]] stringByAppendingString:[err localizedDescription]] 
														   delegate:self 
												  cancelButtonTitle:@"OK"
												  otherButtonTitles:nil];
			[alert show];
			[alert release];
			//client = nil;
			return SRV_CONNECT_FAIL;
		} else {
			NSLog(@"Conectou!");
			return SRV_CONNECT_SUC;
		}
	}
	else {
		[client readDataWithTimeout:-1 tag:0];
		return SRV_CONNECTED;
	}
	
}

- (IBAction) reConnect{
	int stat = [self connectServer:HOST_IP port:HOST_PORT];
	switch (stat) {
		case SRV_CONNECT_SUC:
			[self showMessage:@"connect success"];
			break;
		case SRV_CONNECTED:
			[self showMessage:@"It's connected,don't agian"];
			break;
		default:
			break;
	}
}

- (IBAction) sendMsg{
	
	NSString *inputMsgStr = self.inputMsg.text;
	NSString * content = [inputMsgStr stringByAppendingString:@"\r\n"];
	NSLog(@"%a",content);
	NSData *data = [content dataUsingEncoding:NSISOLatin1StringEncoding];
	[client writeData:data withTimeout:-1 tag:0];
	
	//[data release];
	//[content release];
	//[inputMsgStr release];
	//继续监听读取
	//[client readDataWithTimeout:-1 tag:0];
}

#pragma mark -
#pragma mark close Keyboard
- (IBAction) textFieldDoneEditing:(id)sender{
	[sender resignFirstResponder];
}

- (IBAction) backgroundTouch:(id)sender{
	[inputMsg resignFirstResponder];
}

#pragma mark socket uitl

- (void) showMessage:(NSString *) msg{
	UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"Alert!"
                                                    message:msg
                                                   delegate:nil
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil];
    [alert show];
    [alert release];
}


#pragma mark socket delegate

- (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port{
	[client readDataWithTimeout:-1 tag:0];
}

- (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err
{
    NSLog(@"Error");
}

- (void)onSocketDidDisconnect:(AsyncSocket *)sock
{
	NSString *msg = @"Sorry this connect is failure";
	[self showMessage:msg];
	[msg release];
	client = nil;
}

- (void)onSocketDidSecure:(AsyncSocket *)sock{
	
}

- (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{
	
	NSString* aStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
	NSLog(@"Hava received datas is :%@",aStr);
	self.outputMsg.text = aStr;
	[aStr release];
	[client readDataWithTimeout:-1 tag:0];
}

#pragma mark dealloc

- (void)dealloc {
	
	[client release];
	[inputMsg release];
	[outputMsg release];
    [super dealloc];
}

@end

 

 

 

还是先给出我的界面吧，否则很难懂这些代码

iPad界面

 

 

这样大家满意了吧！

 

好了说了这么多我们还是来看看代码究竟怎么回事吧。

首先从头文件开始看吧，

1，导入头文件#import "AsyncSocket.h"，然后是一些宏

2，声明一个AsyncSocket对象，其他就是一些IBoutlet

再次我们看看视图加载，

 

 

Java代码 复制代码 收藏代码
  1. - (void)viewDidLoad {   
  2.     //[super viewDidLoad];   
  3.     [self connectServer:HOST_IP port:HOST_PORT];   
  4.     //监听读取   
  5.        
  6. }  
- (void)viewDidLoad {
    //[super viewDidLoad];
	[self connectServer:HOST_IP port:HOST_PORT];
	//监听读取
	
}

 显然我们调用了connectServer::这个方法。

在这个方法中，首先初始化我们的对象，使用代理的方式。对象显示是self。然后我们便需在我们的类中实现它的各种方法，来得到各种我们想得到的。

client = [[AsyncSocket alloc] initWithDelegate:self];

 

下面就是连接服务器了，

[client connectToHost:hostIP onPort:hostPort error:&err]

 

并且当client不为空时，我们就读取服务器的信息

[client readDataWithTimeout:-1 tag:0];

 

 

 

Java代码 复制代码 收藏代码
  1. - (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{   
  2.        
  3.     NSString* aStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];   
  4.     NSLog(@"Hava received datas is :%@",aStr);   
  5.     self.outputMsg.text = aStr;   
  6.     [aStr release];   
  7.     [client readDataWithTimeout:-1 tag:0];   
  8. }  
- (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{
	
	NSString* aStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
	NSLog(@"Hava received datas is :%@",aStr);
	self.outputMsg.text = aStr;
	[aStr release];
	[client readDataWithTimeout:-1 tag:0];
}
 

 

在这个方法中很耐人寻味，主要就是在于递归的调用。

 

 

Sendmsg代码 复制代码 收藏代码
  1. - (IBAction) sendMsg{   
  2.        
  3.     NSString *inputMsgStr = self.inputMsg.text;   
  4.     NSString * content = [inputMsgStr stringByAppendingString:@"\r\n"];   
  5.     NSLog(@"%a",content);   
  6.     NSData *data = [content dataUsingEncoding:NSISOLatin1StringEncoding];   
  7.     [client writeData:data withTimeout:-1 tag:0];   
  8. }  
- (IBAction) sendMsg{
	
	NSString *inputMsgStr = self.inputMsg.text;
	NSString * content = [inputMsgStr stringByAppendingString:@"\r\n"];
	NSLog(@"%a",content);
	NSData *data = [content dataUsingEncoding:NSISOLatin1StringEncoding];
	[client writeData:data withTimeout:-1 tag:0];
}

 我们在看看上面发送消息的代码，中的在于"\r\n"的拼接，否则在java端的程序，无法知道你发过来的信息是否结束，当然你也可以使用其他的方式来读取客户端，比如定时；但是我在java端写的server是readLine来判断的，所以需要拼接这个\r\n.

 

 

其他的代码除了asyncSocket代理外都是我们所熟悉的。

 

这些都是asyncsocket代理的代码 复制代码 收藏代码
  1. - (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port{   
  2.     [client readDataWithTimeout:-1 tag:0];   
  3. }   
  4.   
  5. - (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err   
  6. {   
  7.     NSLog(@"Error");   
  8. }   
  9.   
  10. - (void)onSocketDidDisconnect:(AsyncSocket *)sock   
  11. {   
  12.     NSString *msg = @"Sorry this connect is failure";   
  13.     [self showMessage:msg];   
  14.     [msg release];   
  15.     client = nil;   
  16. }   
  17.   
  18. - (void)onSocketDidSecure:(AsyncSocket *)sock{   
  19.        
  20. }   
  21.   
  22. - (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{   
  23.        
  24.     NSString* aStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];   
  25.     NSLog(@"Hava received datas is :%@",aStr);   
  26.     self.outputMsg.text = aStr;   
  27.     [aStr release];   
  28.     [client readDataWithTimeout:-1 tag:0];   
  29. }  
- (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port{
	[client readDataWithTimeout:-1 tag:0];
}

- (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err
{
    NSLog(@"Error");
}

- (void)onSocketDidDisconnect:(AsyncSocket *)sock
{
	NSString *msg = @"Sorry this connect is failure";
	[self showMessage:msg];
	[msg release];
	client = nil;
}

- (void)onSocketDidSecure:(AsyncSocket *)sock{
	
}

- (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{
	
	NSString* aStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
	NSLog(@"Hava received datas is :%@",aStr);
	self.outputMsg.text = aStr;
	[aStr release];
	[client readDataWithTimeout:-1 tag:0];
}
 

到此就结束了。

 

其他要说的，明天再完善吧。

 

posted @ 2012-12-28 17:15  郑文亮  阅读(278)  评论(0)  编辑  收藏  举报