// to tell the receiving goroutines that all data have been sent."

	// Block until either a request is received or a push is triggered.
	// We need 2 go routines because 'read' blocks in Recv().
	go s.receiveDelta(con, ids)

	// Wait for the proxy to be fully initialized before we start serving traffic. Because
	// initialization doesn't have dependencies that will block, there is no need to add any timeout