Using accept() and select() at the same time?

Question

I\'ve got an event-driven network server program. This program accepts connections from other processes on other hosts. There may be many short-lived connections from diff

Answer 1

I'd put a listener in separate process(thread) not to mess things up. And run a worker process on another to handle existing sockets. There's no need for non-blocking listener really. And no thread overhead running 2 threads.

It should work like that: you accept on your listener thread till it returns you a descriptor of client socket and pass it to worker which is doing all dirty read/write job on it.

If you want to listen several ports and don't want to hold one process per listener I suggest you set your socket in O_NONBLOCK and do someth like:

// loop through listeners here and poll'em for read
// when read is successful call accept, get descriptor,
// pass it to worker and continue listen
while(1){
    foreach( serverSocket in ServerSockets ){
         if( serverSocket.Poll( 10, SelectRead ) ){
              clientSocket = serverSocket.Accept();
              // pass to worker here and release
         }
    }
}