Node.js socket.dropMembership() Method
The socket.dropMembership() method is an inbuilt application programming interface of class Socket within dgram module which is used to make kernel leave a multicast group at the particular multicast address.
Syntax:
const socket.dropMembership(multicastAddress[, multicastInterface])
Parameters: This method takes the string representing of the multicast address and multicast interface as the parameter.
Return Value: This method does not return any value.
Example 1: Filename: index.js
Javascript
// Node.js program to demonstrate the// socket.dropMembership() method// Importing dgram modulevar dgram = require('dgram');// Creating and initializing client// and server socketvar client = dgram.createSocket("udp4");var server = dgram.createSocket("udp4");// Catching the message eventserver.on("message", function (msg) { // Displaying the client message process.stdout.write("UDP String: " + msg + "\n"); // Exiting process process.exit();}).bind(1234, () => { // Joining a multicast group at // multicast address server.addMembership('224.0.0.114'); // leaving a multicast group at // multicast address server.dropMembership('224.0.0.114');});// Client sending message to serverclient.send("Hello", 0, 7, 1234, "localhost"); |
Output:
UDP String: Hello
Example 2: Filename: index.js
Javascript
// Node.js program to demonstrate the// socket.dropMembership() method// Importing dgram modulevar dgram = require('dgram');// Creating and initializing client// and server socketvar client = dgram.createSocket("udp4");var server = dgram.createSocket("udp4");// Catching the message eventserver.on("message", function (msg) { // Displaying the client message process.stdout.write("UDP String: " + msg + "\n"); // Exiting process process.exit();});// Catching the listening eventserver.on('listening', () => { const address = server.address(); console.log(`server listening ${address.address}:${address.port}`);});// Binding server with port addressserver.bind(1234, () => { // Adding a multicast address for // others to join server.addMembership('224.0.0.114'); // leaving a multicast group at multicast // address by using dropMembership() method server.dropMembership('224.0.0.114');});// Client sending message to serverclient.send("Hello", 0, 7, 1234, "localhost"); |
Output:
server listening 0.0.0.0:1234 UDP String: Hello
Run the index.js file using the following command:
node index.js
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