this tutorial 创建一个聊天示例应用程序非常好用并且非常简单（像我这样的任何 iphone 菜鸟都可以让它工作，即使在模拟器模式下它也连接到外部套接字服务器）。
我调整了它来与我的套接字服务器通信，它就像一个魅力。这是测试代码，所以没有真正的问题。它只发送一条消息（您的登录 ID）并收到回复，它会显示在控制台中。
//
// ViewController.m
// zdelSocketTest01a
//
//
#import "ViewController.h"
@implementation ViewController
@synthesize inputNameField;
@synthesize joinView;
- (void)initNetworkCommunication {
uint portNo = 5555;
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"227.3.4.56", portNo, &readStream, &writeStream);
inputStream = (__bridge NSInputStream *)readStream;
outputStream = (__bridge NSOutputStream *)writeStream;
[inputStream setDelegate:self];
[outputStream setDelegate:self];
[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream open];
[outputStream open];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
[self initNetworkCommunication];
messages = [[NSMutableArray alloc] init];
}
- (void)viewDidUnload
{
[self setInputNameField:nil];
[self setJoinView:nil];
[self setJoinView:nil];
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (IBAction)joinChat:(id)sender {
NSString *response = [NSString stringWithFormat:@"logon,%@", inputNameField.text];
NSData *data = [[NSData alloc] initWithData:[response dataUsingEncoding:NSASCIIStringEncoding]];
[outputStream write:[data bytes] maxLength:[data length]];
}
/*
- (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent {
NSLog(@"stream event %i", streamEvent);
}
*/
- (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent {
typedef enum {
NSStreamEventNone = 0,
NSStreamEventOpenCompleted = 1 << 0,
NSStreamEventHasBytesAvailable = 1 << 1,
NSStreamEventHasSpaceAvailable = 1 << 2,
NSStreamEventErrorOccurred = 1 << 3,
NSStreamEventEndEncountered = 1 << 4
};
uint8_t buffer[1024];
int len;
switch (streamEvent) {
case NSStreamEventOpenCompleted:
NSLog(@"Stream opened now");
break;
case NSStreamEventHasBytesAvailable:
NSLog(@"has bytes");
if (theStream == inputStream) {
while ([inputStream hasBytesAvailable]) {
len = [inputStream read:buffer maxLength:sizeof(buffer)];
if (len > 0) {
NSString *output = [[NSString alloc] initWithBytes:buffer length:len encoding:NSASCIIStringEncoding];
if (nil != output) {
NSLog(@"server said: %@", output);
}
}
}
} else {
NSLog(@"it is NOT theStream == inputStream");
}
break;
case NSStreamEventHasSpaceAvailable:
NSLog(@"Stream has space available now");
break;
case NSStreamEventErrorOccurred:
NSLog(@"Can not connect to the host!");
break;
case NSStreamEventEndEncountered:
[theStream close];
[theStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
break;
default:
NSLog(@"Unknown event %i", streamEvent);
}
}
/*
- (void) messageReceived:(NSString *)message {
[messages addObject:message];
[self.tView reloadData];
}
*/
@end
您的 ViewController.h 文件将包含
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController <NSStreamDelegate>
@property (weak, nonatomic) IBOutlet UITextField *inputNameField;
@property (weak, nonatomic) IBOutlet UIView *joinView;
- (IBAction)joinChat:(id)sender;
@end
NSInputStream *inputStream;
NSOutputStream *outputStream;
NSMutableArray * messages;
仅限 NOOBS：您必须通过按 CONTROL 并将对象拖到代码窗口中来链接按钮和文本字段。当您这样做时，将自动创建上述属性。检查this video tutorial如果你被难住了
NOOBS ONLY 2：此套接字将在 XCODE 的 CONSOLE PANE 中输出。在 xcode 窗口的右上角，单击 HIDE OR SHOW THE DEBUG AREA（必要时寻求帮助）。
在具有 2GB 内存的 macbook 上构建和测试（模拟器和设备），使用 xcode 4.2 for snow leopard。