转载：iphone TCPClient 示例
//
// TCPClientDemoAppDelegate.h
// TCPClientDemo
//
// Created by 赵 栓 on 09-10-10.
// Copyright __MyCompanyName__ 2009. All rights reserved.
//
#import <UIKit/UIKit.h>
#import <CoreFoundation/CoreFoundation.h>
#import <Foundation/Foundation.h>
#import <sys/socket.h>
#import <netinet/in.h>
#import <arpa/inet.h>
#import <unistd.h>
#import "ChatViewController.h"
#import "ConnectViewController.h"
@interface TCPClientDemoAppDelegate : NSObject <UIApplicationDelegate> {
UIWindow *window;
ChatViewController *chatController;
ConnectViewController *connController;
CFSocketRef _socket;
}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) ChatViewController *chatController;
@property (nonatomic, retain) ConnectViewController *connController;
- (void) doConnect;
- (void) sendMessage;
- (void) setTextInMainThread:(NSString *)text;
@end
//
// TCPClientDemoAppDelegate.m
// TCPClientDemo
//
// Created by 赵 栓 on 09-10-10.
// Copyright __MyCompanyName__ 2009. All rights reserved.
//
#import "TCPClientDemoAppDelegate.h"
@implementation TCPClientDemoAppDelegate
@synthesize window;
@synthesize chatController;
@synthesize connController;
- (void)applicationDidFinishLaunching:(UIApplication *)application {
chatController = [[ChatViewController alloc] initWithNibName:nil bundle:nil];
chatController.view.frame = [UIScreen mainScreen].applicationFrame;
connController = [[ConnectViewController alloc] initWithNibName:nil bundle:nil];
[window addSubview:chatController.view];
[window makeKeyAndVisible];
[chatController presentModalViewController:connController animated:NO];
chatController.button.target = self;
chatController.button.action = @selector(sendMessage);
[connController.button addTarget:self action:@selector(doConnect) forControlEvents:UIControlEventTouchDown];
}
- (void)dealloc {
[chatController release];
[connController release];
[window release];
[super dealloc];
}
- (void)setTextInMainThread:(NSString *)text {
NSRange endRange;
endRange.location = [chatController.textView.text length];
endRange.length = [text length];
chatController.textView.text = [chatController.textView.text stringByAppendingString:[@"server: "stringByAppendingString:text]];;
[chatController.textView scrollRangeToVisible:endRange];
}
- (void)readStream {
char buffer[255];
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
while (recv(CFSocketGetNative(_socket), buffer, sizeof(buffer), 0)) {
NSString *s = [NSString stringWithUTF8String:buffer];
[self performSelectorOnMainThread:@selector(setTextInMainThread 
withObject:s waitUntilDone:YES];
}
[pool release];
}
static void TCPServerConnectCallBack(CFSocketRef socket, CFSocketCallBackType type, CFDataRef address,const void *data, void *info) {
if (data != NULL) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:@"连接失败" delegate:nilcancelButtonTitle:@"关闭" otherButtonTitles:nil];
[alert show];
[alert release];
return;
}
TCPClientDemoAppDelegate *delegate = (TCPClientDemoAppDelegate *)info;
[delegate performSelectorInBackground:@selector(readStream) withObject:nil];
[delegate.connController dismissModalViewControllerAnimated:YES];
[[NSNotificationCenter defaultCenter] addObserver:delegate.chatControllerselector:@selector(keyboardWillShown name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:delegate.chatControllerselector:@selector(keyboardWillHidden name:UIKeyboardWillHideNotification object:nil];
}
- (void) doConnect {
CFSocketContext CTX = {0, self, NULL, NULL, NULL};
_socket = CFSocketCreate(kCFAllocatorDefault, PF_INET, SOCK_STREAM, IPPROTO_TCP, kCFSocketConnectCallBack, TCPServerConnectCallBack, &CTX);
if (NULL == _socket) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:@"创建套接字失败" delegate:nilcancelButtonTitle:@"关闭" otherButtonTitles:nil];
[alert show];
[alert release];
}
struct sockaddr_in addr4;
memset(&addr4, 0, sizeof(addr4));
addr4.sin_len = sizeof(addr4);
addr4.sin_family = AF_INET;
addr4.sin_port = htons(12345);
addr4.sin_addr.s_addr = inet_addr([connController.textField.text UTF8String]);
CFDataRef address = CFDataCreate(kCFAllocatorDefault, (UInt8 *)&addr4, sizeof(addr4));
CFSocketConnectToAddress(_socket, address, -1);
CFRunLoopRef cfrl = CFRunLoopGetCurrent();
CFRunLoopSourceRef source = CFSocketCreateRunLoopSource(kCFAllocatorDefault, _socket, 0);
CFRunLoopAddSource(cfrl, source, kCFRunLoopCommonModes);
CFRelease(source);
}
- (void) sendMessage {
NSString *stringToSend = [chatController.textField.text stringByAppendingString:@"/n"];
const char *data = [stringToSend UTF8String];
send(CFSocketGetNative(_socket), data, strlen(data) + 1, 0);
NSRange endRange;
endRange.location = [chatController.textView.text length];
endRange.length = [stringToSend length];
chatController.textView.text = [chatController.textView.text stringByAppendingString:[@"me: "stringByAppendingString:stringToSend]];
[chatController.textView scrollRangeToVisible:endRange];
chatController.textField.text = @"";
}
@end