以前寫過基於http的網絡傳輸層的通信,如今項目須要實現tcp/ip的通信協議,經過網絡查找了一下,已經有人寫好了公開的類庫AsyncSocket,下面介紹一下AsyncSocket的使用方法。 ios
AsyncSocket的官方文檔:http://code.google.com/p/cocoaasyncsocket/ 服務器
使用方法以下: 網絡
一、建立工程。 iphone
二、把AsyncSocket添加到項目中。 socket
三、添加CFNetwork.framework到工程中。 async
四、實現測試類: tcp
#import <UIKit/UIKit.h>
#import "AsyncSocket.h"
@interface iphone_socketViewController : UIViewController { svnAsyncSocket *asyncSocket;
} 測試@end google
相應的方法實現:
#import "iphone_socketViewController.h"
@implementation iphone_socketViewController
- (void)viewDidLoad {
[super viewDidLoad];
asyncSocket = [[AsyncSocket alloc] initWithDelegate:self];
NSError *err = nil;
if(![asyncSocket connectToHost:@"192.168.0.113" onPort:25001 error:&err])
{
NSLog(@"Error: %@", err);
}
}
- (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port
{
NSLog(@"onSocket:%p didConnectToHost:%@ port:%hu", sock, host, port);
[sock readDataWithTimeout:1 tag:0];
}
-(void) onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag
{
NSString* aStr = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(@"===%@",aStr);
[aStr release];
NSData* aData= [@"<xml>我喜歡你<xml>" dataUsingEncoding: NSUTF8StringEncoding];
[sock writeData:aData withTimeout:-1 tag:1];
[sock readDataWithTimeout:1 tag:0];
}
- (void)onSocket:(AsyncSocket *)sock didSecure:(BOOL)flag
{
NSLog(@"onSocket:%p didSecure:YES", sock);
}
- (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err
{
NSLog(@"onSocket:%p willDisconnectWithError:%@", sock, err);
}
- (void)onSocketDidDisconnect:(AsyncSocket *)sock
{
//斷開鏈接了
NSLog(@"onSocketDidDisconnect:%p", sock);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidUnload {
asyncSocket=nil;
}
- (void)dealloc {
[asyncSocket release];
[super dealloc];
}
@end
這裏只實現了簡單的客戶端,關於服務器的實現,是採用pathy寫的。在源代碼中有。
編譯運行結果:
服務器端:
bogon:iosworkspace vsp$ ./Servers.py
客戶端的IP是: (’192.168.0.169′, 54851)
<xml>我喜歡你<xml>
————–
後來發的數據——-
客戶端:
2010-12-27 19:14:47.723 iphone.socket[3186:307] WB:Notice: WinterBoard
2010-12-27 19:14:48.892 iphone.socket[3186:307] onSocket:0x16bd00 didConnectToHost:192.168.0.113 port:25001
2010-12-27 19:14:48.897 iphone.socket[3186:307] ===我是服務器端的數據
2010-12-27 19:14:48.911 iphone.socket[3186:307] ===我不喜歡你
2010-12-27 19:14:48.918 iphone.socket[3186:307] onSocket:0x16bd00 willDisconnectWithError:(null)
2010-12-27 19:14:48.928 iphone.socket[3186:307] onSocketDidDisconnect:0x16bd00
源代碼:http://easymorse-iphone.googlecode.com/svn/trunk/iphone.socket/