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我是iOS编程的新手，我试图做一个简单的程序来演示如何进行套接字连接。我正在关注的教程如下：http://www.devx.com/wireless/Article/43551iOS 7套接字连接拒绝错误61
我想在localhost:8080上建立套接字连接。该应用程序有一个文本视图，应该显示我传递的数据，这只是我输入的一个随机常量字符串。我得到的问题是NSLog中的一条错误消息（两次），当尝试连接时，表示The operation couldn’t be completed. Connection refused (Code = 61)，可能一次用于输入，一次用于输出。我关闭了运行Mavericks（Mac OS X 10.9.1）的Mac上的防火墙。我不知道还有什么办法可以使连接不被拒绝。任何帮助不胜感激。
下面是我使用的代码（这是我在的iOS程序的第一次尝试，所以它可能是很丑陋）：
#import "OXCTextAreaViewController.h"
#import <Foundation/Foundation.h>
@interface OXCTextAreaViewController()
@property (weak, nonatomic) IBOutlet UITextView *textArea;
@end
NSInputStream *inputStream;
NSOutputStream *outputStream;
NSMutableData *data;
@implementation OXCTextAreaViewController
@synthesize textArea;
- (void)connectSockets
{
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
CFStreamCreatePairWithSocketToHost(NULL,
(CFStringRef) @"localhost",
8080,
&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];
[outputStream open];
[inputStream open];
}
-(void) writeToServer:(const uint8_t *) buf {
[outputStream write:buf maxLength:strlen((char*)buf)];
}
- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode {
switch(eventCode) {
case NSStreamEventOpenCompleted:
{
NSLog(@"NSStreamEventOpenCompleted");
break;
}
case NSStreamEventEndEncountered:
{
NSLog(@"NSStreamEventEndEncountered");
break;
}
case NSStreamEventHasSpaceAvailable:
{
NSLog(@"NSStreamEventHasSpaceAvailable");
break;
}
case NSStreamEventNone:
{
NSLog(@"NSStreamEventNone");
break;
}
case NSStreamEventErrorOccurred:
{
NSError* error = [stream streamError];
NSString* errorMessage =
[NSString stringWithFormat:@"%@ (Code = %d)",
[error localizedDescription],
[error code]];
NSLog(errorMessage);
break;
}
case NSStreamEventHasBytesAvailable:
{
NSLog(@"NSStreamEventHasBytesAvailable");
if (data == nil) {
data = [[NSMutableData alloc] init];
}
uint8_t buf[1024];
unsigned int len = 0;
len = [(NSInputStream *)stream read:buf maxLength:1024];
if(len) {
[data appendBytes:(const void *)buf length:len];
int bytesRead = 0;
bytesRead += len;
} else {
NSLog(@"No data.");
}
NSString *str =
[[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding];
NSLog(str);
UIAlertView *alert =
[[UIAlertView alloc] initWithTitle:@"From server"
message:str
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
data = nil;
} break;
}
}
-(void) disconnect {
[inputStream close];
[outputStream close];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
[self connectSockets];
const uint8_t *str =
(uint8_t *) [@"alsdkjflsdfjlasdfjldskfsdlafdsak" UTF8String];
[self writeToServer:str];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end