Node.js socket.connect() Method Last Updated : 06 Apr, 2023 Comments Improve Suggest changes Like Article Like Report The socket.connect() method is an inbuilt application programming interface of class Socket within dgram module which is used to connect the particular server to a particular port and address. Syntax: const socket.connect(port[, address][, callback]) Parameters: This method accepts the following parameters: port: This parameter holds the port number.address: This parameter holds the server address information.callback: This parameter holds the callback function for further operation. Return Value: This method does not return any value. Example 1: In this example, we will see the use of socket.connect() method Filename: index.js JavaScript // Node.js program to demonstrate the // server.connect() method // Importing dgram module const dgram = require('dgram'); // Creating and initializing client // and server socket let client = dgram.createSocket("udp4"); let server = dgram.createSocket("udp4"); // Catching the message event server.on("message", function (msg) { // Displaying the client message process.stdout.write("UDP String: " + msg + "\n"); // Exiting process process.exit(); }) // Binding server with port .bind(1234, () => { // Getting the address information // for the server by using // address method const address = server.address() // Display the result console.log(address); }); // Connecting the server with particular local host // and address by using connect() method server.connect(1234, "localhost", () => { console.log("connected") }) // Client sending message to server client.send("Hello", 0, 7, 1234, "localhost"); Output: { address: '0.0.0.0', family: 'IPv4', port: 1234 } connected UDP String: Hello Example 2: In this example, we will see the use of socket.connect() method Filename: index.js JavaScript // Node.js program to demonstrate the // server.connect() method // Importing dgram module const dgram = require('dgram'); // Creating and initializing client // and server socket let client = dgram.createSocket("udp4"); let server = dgram.createSocket("udp4"); // Catching the message event server.on("message", function (msg) { // Displaying the client message process.stdout.write("UDP String: " + msg + "\n"); // Exiting process process.exit(); }); // Catching the listening event server.on('listening', () => { // Getting address information for the server const address = server.address(); // Display the result console.log(`server listening ${address.address}:${address.port}`); }); // Binding server with port address // by using bind() method server.bind(1234, () => { // Adding a multicast address for others to join server.addMembership('224.0.0.114'); }); // Connecting the server with particular local host // and address by using connect() method server.connect(1234, "localhost", () => { console.log("connected") }) // Client sending message to server client.send("Hello", 0, 7, 1234, "localhost"); Output: server listening 0.0.0.0:1234 connected UDP String: Hello Run the index.js file using the following command: node index.js Reference: https://nodejs.org/dist/latest-v12.x/docs/api/dgram.html#dgram_socket_connect_port_address_callback Comment More infoAdvertise with us Next Article Node.js socket.dropMembership() Method R rohitprasad3 Follow Improve Article Tags : Web Technologies Node.js Node.js-Methods Similar Reads Node.js socket.address() Method The socket.address() method is an inbuilt application programming interface of class Socket within dgram module which is used to get the object which contains the address information for the socket. 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