从nsq中学习如何优雅的退出go 网络程序

func (n *NSQAdmin) Main() {

httpListener, err := net.Listen("tcp", n.httpAddr.String())

if err != nil {

n.logf("FATAL: listen (%s) failed - %s", n.httpAddr, err)

os.Exit(1)

}

n.httpListener = httpListener

httpServer := NewHTTPServer(&Context{n})

n.waitGroup.Wrap(func() {

util.HTTPServer(n.httpListener, httpServer, n.opts.Logger, "HTTP")

})

n.waitGroup.Wrap(func() { n.handleAdminActions() })

}

func (n *NSQAdmin) Exit() {

n.httpListener.Close()

close(n.notifications)

n.waitGroup.Wait()

}