Node.js socket.setRecvBufferSize() Method

Last Updated : 06 Apr, 2023

The socket.setRecvBufferSize() method is an inbuilt application programming interface of class Socket within dgram module which is used to set the size of the socket receive buffer in bytes.

Syntax:

const socket.setRecvBufferSize( size )

Parameters: This method takes the integer value size as a parameter for size allocation.

Return Value: This method does not return any value.

Example 1: In this example, we will see the use of socket.setRecvBufferSize() Method

Filename: index.js

JavaScript

// Node.js program to demonstrate the // server.setRecvBufferSize() 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, () => {          // Setting the receiver buffer size         // by using setRecvBufferSize() method         server.setRecvBufferSize(12345);          // Getting the receiver buffer size         // by using getRecvBufferSize() method         const size = server.getRecvBufferSize();          // Display the result         console.log(size);      });  // Client sending message to server client.send("Hello", 0, 7, 1234, "localhost");

Output:

12345 UDP String: Hello

Example 2: In this example, we will see the use of socket.setRecvBufferSize() Method

Filename: index.js

JavaScript

// Node.js program to demonstrate the // server.setRecvBufferSize() 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, () => {      // Setting the receive buffer size     // by using setRecvBufferSize() method     server.setRecvBufferSize(1234567);      // Getting the receive buffer size     // by using getRecvBufferSize() method     const size = server.getRecvBufferSize();      // Display the result     console.log(size);  });  // Client sending message to server client.send("Hello", 0, 7, 1234, "localhost");

Output:

server listening 0.0.0.0:1234 1234567 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_setrecvbuffersize_size

Node.js dgram.createSocket() Method

RohitPrasad3

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