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Node.js socket.getRecvBufferSize() Method

  • Last Updated : 06 May, 2021

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

Syntax:

const socket.getSendBufferSize()

Parameters: This method does not accept any parameter.

Return Value: This method returns the size of socket receive buffer in bytes.

Example 1: Filename: index.js



Javascript




// Node.js program to demonstrate the
// server.getRecvBufferSize() method
 
// Importing dgram module
var dgram = require('dgram');
 
// Creating and initializing client and
// server socket
var client = dgram.createSocket("udp4");
var 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 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:

65536
UDP String: Hello

Example 2: Filename: index.js

Javascript




// Node.js program to demonstrate the
// server.getRecvBufferSize() method
 
// Importing dgram module
var dgram = require('dgram');
 
// Creating and initializing client
// and server socket
var client = dgram.createSocket("udp4");
var 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, () => {
 
  // 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
65536
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_getrecvbuffersize




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