Node.js socket.setSendBufferSize() Method
The socket.setSendBufferSize() method is an inbuilt application programming interface of class Socket within dgram module which is used to set the size of the socket to send buffer in bytes.
Syntax:
const socket.setSendBufferSize( 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 a socket.setSendBufferSize() method
Filename: index.js
Javascript
// Node.js program to demonstrate the // server.setSendBufferSize() 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 Send buffer size // by using setSendBufferSize() method server.setSendBufferSize(12345); // Getting the receive 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:
12345 UDP String: Hello
Example 2: In this example, we will see the use of a socket.setSendBufferSize() method
Filename: index.js
Javascript
// Node.js program to demonstrate the // server.setSendBufferSize() 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 Send buffer size // by using setSendBufferSize() method server.setSendBufferSize(1234567); // 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:
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_setsendbuffersize_size
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