我一直在研究从2010年冬天起从斯坦福第193p课程(iOS节目)第17号讲座中得出的骨 the/NSStream样本代码。 The example Code is available 。
样本法以营养脂重计,设定了海面表,对0港进行约束,以便给它一个自由港。 然后使用NSNetservice(bonjour)向该港口发布服务。
This is a naive implementation because connections are rejected if a connection already exists. My question is, what is the proper way to handle multiple connections? Once multiple clients are connected to the server, how does the server distinguish between them? i.e. How can data be sent specifically to one client and not the others?
- (void) _acceptConnection:(int)fd
{
int junk;
// If we already have a connection, reject this new one. This is one of the
// big simplifying assumptions in this code. A real server should handle
// multiple simultaneous connections.
if ( self.isReceiving ) {
junk = close(fd);
assert(junk == 0);
} else {
[self _startReceive:fd];
}
}
// Called by CFSocket when someone connects to our listening socket.
// This implementation just bounces the request up to Objective-C.
static void AcceptCallback(CFSocketRef s,
CFSocketCallBackType type,
CFDataRef address,
const void *data,
void *info)
{
ReceiveServer * obj;
assert(type == kCFSocketAcceptCallBack);
assert(data != NULL);
obj = (ReceiveServer *) info;
assert(obj != nil);
assert(s == obj->_listeningSocket);
[obj _acceptConnection:*(int *)data];
}