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Node.js socket.getSendBufferSize() Method
  • Last Updated : 09 Aug, 2020

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

Syntax:

const socket.getSendBufferSize()

Parameters: This method does not accept any parameters.

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.getSendBufferSize() method
  
// Importing dgram module
var dgram = require('dgram');
  
// Creating and initializing clinet
// 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 send buffer size
        // by using getSendBufferSize() method
        const size = server.getSendBufferSize();
  
        // 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.getSendBufferSize() method
  
// Importing dgram module
var dgram = require('dgram');
  
// Creating and initializing clinet
// 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 recive buffer size
    // by using getSendBufferSize() method
    const size = server.getSendBufferSize();
  
    // 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_getsendbuffersize

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