Node.js socket.ref() Method

The socket.ref() method is an inbuilt application programming interface of class Socket within dgram module which is used to get the reference of the particular socket containing all the information in it.

Syntax:

const socket.ref()

Parameters: This method does not accept any parameters.

Return Value: This method returns the reference of the particular socket containing all the information in it.

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

Filename: index.js

Output:

[ 'message' ]
UDP String: Hello

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

Filename: index.js

Output:

server listening 0.0.0.0:1234
[ 'message', 'listening' ]
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_ref