ewents-scan

This guide provides an example of how to use the RTCScan class to manage connections and handle data during a scan session. Below, you'll find installation instructions, initialization options, and method explanations.

Demo: https://scan.ewents.io/ Video Demo: https://youtu.be/tXeCPb_CR0A

Installation

First, make sure to install the ewents-scan package:

npm install ewents-scan

Using the RTCScan Class

The RTCScan class provides several options and methods to retrieve connection details, monitor connection status, and handle received data.

RTCScan Initialization Options

const rtcscan = new RTCScan('66760d2b14813c0e8b53b4ff', {
  maxFeedback: 10,            // Max number of feedback allowed
  throttleInterval: 2000,      // Time between each scan event (in ms)
  feedbackDuration: 10000,     // Duration of feedback in milliseconds
  isAutoReconnect: true,       // Automatically reconnect if disconnected
}, {
  allowShortUrl: false,        // If true, allows generating a short URL with TTL
  isLog: true,                 // Enables logging for debugging purposes
  shortUrlTTL: 300             // Time-to-live for the short URL in seconds
});

Options Explained:

• maxFeedback: Maximum number of feedback events allowed.
• throttleInterval: Minimum interval (in milliseconds) between each scan event.
• feedbackDuration: Duration for which feedback is active.
• isAutoReconnect: Automatically reconnect if the connection is lost.

Advanced Configuration

The advanced configuration object includes:

• allowShortUrl: Allows generating a short URL with a specified TTL (in seconds) for temporary connections.
• isLog: Enables logging for debugging and monitoring.
• shortUrlTTL: TTL (in seconds) for the short URL, after which it expires.

Methods

1. Getting Connection Details (with optional QR size)

const { qrImage, url } = await rtcscan.getConnectionDetail(300);

Retrieves the QR code URL (qrImage) and the connection URL (url). Optionally, you can pass qrPxSize to adjust the QR code size (default is 300 pixels).

2. Handling Received Data

rtcscan.onDataReceived((value) => {
  return {
    type: 'success' | 'error',  // Indicates the type of response
    message: 'This is a message',  // The message to be sent
  };
});

Listens for incoming data. You can return a type ('success' or 'error') and a message, though this is optional.

3. Monitoring Connection Status

rtcscan.onIsConnecting(() => setIsLoading(true));
rtcscan.onIsConnected(() => setIsConnected(true));

• onIsConnecting: Triggered when the session is connecting.
• onIsConnected: Triggered when the connection is successfully established.

4. Reconnect Functionality

rtcscan.reConnect();

Attempts to manually re-establish the connection if it is lost.

5. Getting the Session ID

const sessionId = rtcscan.getSession();
rtcscan.getSession((id) => console.log(id));  // Optionally pass a callback

Returns the session ID, with an optional callback for handling it when available.

6. Starting Connection with a URL

rtcscan.startConnectionWithUrl('https://scan.ewents.io/connection-url');

Initiates the connection using a specified URL (short or long), allowing flexibility in the URL format.

This overview covers the key methods and options of the RTCScan class, providing control over connection handling, received data, and session management.