Socket in iOS

最新推荐文章于 2022-08-15 17:18:55 发布

转载最新推荐文章于 2022-08-15 17:18:55 发布 · 82 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/chuwachen/archive/2013/06/01/3911023.html

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#网络

本文介绍如何使用TCP和UDP进行套接字编程。对于TCP编程，文章提供了基于NSInputStream和NSOutputStream的连接和发送消息的方法。对于UDP编程，则展示了如何通过AsyncUdpSocket库初始化UDP套接字并发送数据。

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TCP based Socket (also can use AsynSocket lib)

NSInputStream *inputStream;
NSOutputStream *outputStream;

- (void)connect

{

CFReadStreamRef readStream;

CFWriteStreamRef writeStream;



CFStreamCreatePairWithSocketToHost(NULL, (__bridge CFStringRef)(@"127.0.0.1"), 80, &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)sendMessage:(NSString *)message

{

NSData *data = [[NSData alloc] initWithData:[message dataUsingEncoding:NSASCIIStringEncoding]];

[outputStream write:[data bytes] maxLength:[data length]];

}

UDP based socket (use AsyncUdpSocket lib)
- Copy AsyncUdpSocket.h and AsyncUdpSocket.m to your project.
- Conform to AsyncUdpSocketDelegate for example,
  - @interface XXXViewController : UIViewController <AsyncUdpSocketDelegate>
- - (void)initUdpSocket
  
  {
  
  asyncUdpSocket = [[AsyncUdpSocket alloc]initWithDelegate:self];
  
  }
  
  - (void)sendMessage:(NSString *)message
  
  {
  
  NSData *data = [[NSData alloc] initWithData:[message dataUsingEncoding:NSUTF8StringEncoding]];
  
  BOOL success = [asyncUdpSocket sendData:data toHost:@"127.0.0.1" port:8888 withTimeout:-1 tag:1];
  
  NSLog(@"send upd complete: %d", success);
  
  }