Question

我写了一个作为服务器的程序。知道“接受”阻止了该计划。我想用这个语句启动一个线程，以防止程序被阻止，但这仍然会发生。有人可以帮忙吗？邮政编码感谢

-(IBAction)Connetti{

     if(switchConnessione.on){

      int port = [fieldPort.text intValue];

      labelStatus.text = [[NSString alloc] initWithFormat:@"Il Server è attivo"];

      server_len = sizeof(server);

      server.sin_family = AF_INET;
      server.sin_port = htons((u_short)port);
      server.sin_addr.s_addr = INADDR_ANY;

      sd = socket (AF_INET, SOCK_STREAM, 0);

      bind(sd, (struct sockaddr*)&server, sizeof(server));

      listen(sd, 1);

      [NSThread detachNewThreadSelector:@selector(startThreadAccept) toTarget:self withObject:nil];  

      }

     else {
      labelStatus.text = [[NSString alloc] initWithFormat:@"Server non attivo"]; 

      switchChat.on = FALSE;
      switchChat.enabled = FALSE;
     }

    } 

-(void)startThreadAccept{

     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init];

     [self performSelectorOnMainThread:@selector(acceptConnection) withObject:nil waitUntilDone:NO];
     [pool release];

    }

-(void)acceptConnection{

     new_sd = accept(sd, (struct sockaddr*)&server, &server_len);
     labelStatus.text = [[NSString alloc] initWithFormat:@"Ho accettato una connessione:%d", new_sd];
     switchChat.enabled = TRUE;



}

Answer 1

你仍然在主线程上调用accept()。如果您希望在其他线程上接受连接，则需要删除-performSelectorOnMainThread:电话。

Answer 2

这是我的新方法

- （IBAction）Connetti {

//code 
[NSThread detachNewThreadSelector:@selector(acceptConnection) toTarget:self withObject:nil]; 
//code   
}

- （void）acceptConnection {

NSAutoreleasePool *pool = [[NSAutoreleasePool alloc]init]; 

new_sd = accept(sd, (struct sockaddr*)&server, &server_len); 
labelStatus.text = [[NSString alloc] initWithFormat:@"Ho accettato una connessione:%d", new_sd]; 
switchChat.enabled = TRUE; 
[pool   release]; 

}

这是一个正确的解决方案吗？为什么在某些情况下，线程似乎无法启动？感谢

我的线程程序块

2 个答案: