Push to TCP not round robining

[zippy1981]

I have the following code to write messages to zeromq from a writer

func ZQServerStart(endChannel chan bool) {
	// Create a new REP (Reply) socket
	server := zmq4.NewPull(context.Background())
	defer server.Close()
	endpoint := config.GetEndPoint()
	if err := server.Listen(endpoint); err != nil {
		log.Fatalf("Failed to bind server: %v", err)
	}
	fmt.Printf("Server listening on %s\n", endpoint)

	clean := <-endChannel

	fmt.Println("Server shutting down");
	if (!clean) {
		log.Fatalf("Server did not shut down cleanly")
	}
}

Then I have two other listeners (one written in node and python). They both receive all the messages. When I write a simple push app in python, the messages get round robined correctly.

func ZQServerStart(endChannel chan bool) {
	// Create a new REP (Reply) socket
	server := zmq4.NewPull(context.Background())
	defer server.Close()
	endpoint := config.GetEndPoint()
	if err := server.Listen(endpoint); err != nil {
		log.Fatalf("Failed to bind server: %v", err)
	}
	fmt.Printf("Server listening on %s\n", endpoint)

	clean := <-endChannel

	fmt.Println("Server shutting down");
	if (!clean) {
		log.Fatalf("Server did not shut down cleanly")
	}
}