iphone使用开源代码Asyncsocket进行socket编程 之二

在iphone的平台下，要进行socket开发其实有很多种的方法，开源的库Asyncsocket，官方的CFSocket，还有BSD的socket。

下面是用开源的库Asyncsocket的例子：
//

// 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

// 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