小编pb5*_*593的帖子

我目前正在Objective-C中编写一个简单的TCP服务器类,它应该能够绑定并侦听特定端口.特别是我有一个-(void) start创建CFSockets 的函数,将它绑定到指定的端口并将其添加到运行循环中.它看起来像这样:

- (void) start {
    //This function is called after the initialiser

    if([self isStarted]) //if already started, return without doing anything
        return;


    //create a socket
    CFSocketContext socketCtxt = {0, (__bridge void *)self, NULL, NULL, NULL};
    socket = CFSocketCreate(kCFAllocatorDefault, PF_INET, SOCK_STREAM, IPPROTO_TCP, kCFSocketAcceptCallBack, (CFSocketCallBack)&SocketAcceptCallback, &socketCtxt);


    NSAssert(socket, @"Error: Cannot create a socket...");


    int yes = 1;
    setsockopt(CFSocketGetNative(socket), SOL_SOCKET, SO_REUSEADDR, (void *)&yes, sizeof(yes));


//bind it to the desired port
    struct sockaddr_in serverAddress;
    socklen_t nameLen = 0;
    nameLen = sizeof(serverAddress); …