Sakko

Sakko (German, translated: "Jacket");

A simple Server/Client API based on channels

Usage:

SakkoHost host = new SakkoHost(); // uses port 28080 by default
SakkoClient client = new SakkoClient(); // uses host "localhost" and the above port by default

// While instantiating, the host automatically creates a ServerSocket and listens for clients.
// The SakkoClient automatically tries to connect to the SakkoHost

// Therefore, BOTH instantiations need to be tried/caught

Now both of these objects can simply communicate

// Client sends the host a message that he'd like to react to "InfoChannel" messages
// The client will simply print out the string
client.subscribe("InfoChannel", System.out::println);

// Now, everytime any client or the host publish a message to "InfoChannel", this client will be notified

What happens under the hood:

client.subscribe("InfoChannel");

// Adds a handler if a messages comes in
client.addHandler("InfoChannel", new SakkoMessageHandler() {
            @Override
            public void handleInput(String message) {
                System.out.println(message);
            }
        });

Now, either the client or the host can send a message via this channel.

// Sending a message to "InfoChannel"
host.publish("InfoChannel", "Sakko is awesome");

The client will print out "Sakko is awesome"

Yes, that's it! You can add as many clients as you want. If you have 5 clients, each listening to the same channel, and send a message to this channel, every client gets notificated with the sent message!