Communication Between Devices (Core API)

Protobject Framework enables seamless communication between multiple devices, allowing them to interact dynamically within a distributed system by using Core API. This is achieved through message sending and receiving mechanisms.

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Sending Messages

To send a message from one page to another, use the Protobject.Core.send(value).to(targetPage); function. This allows you to transmit data between devices.

Example:

Protobject.Core.send(true).to("main.html");

In this example, true is sent to main.html. The receiving page must be set up to process incoming messages.

Receiving Messages

To listen for incoming messages, use the Protobject.Core.onReceived(callback) function. The callback function is triggered whenever a message is received.

Example:

Protobject.Core.onReceived(function (message) {
  if (message) {
    console.log("Received: ON");
  } else {
    console.log("Received: OFF");
  }
});

In this example, the page logs whether it received an ON or OFF signal.

Distributed Multi-Device Interaction

Protobject applications consist of:

• One main page (e.g., main.html).
• Multiple secondary pages (e.g., device1.html, device2.html).

Each page, whether main or secondary, can communicate with the others through message passing.