Step by step instructions for SignalR for android?

Question

Java

I rustled on the Internet, found several examples that I can’t make out on my own.
If there are those who are willing and able to make step-by-step instructions on how to create a client for SignalR on android, help.
I managed to implement the hub

Platform.loadPlatformComponent(new AndroidPlatformComponent());  //(это у мене в onCreate Application класа)

       String server = Constants.messenger.HUB_URL; // (это ссылка на броадкаст хаб)
        HubConnection connection = new HubConnection(server);
        HubProxy proxy = connection.createHubProxy("hub");

, but how to connect it to the host, and even more so. receive message do not understand.