Node.js socket.bind() Method

The socket.bind() method is an inbuilt application programming interface of class Socket within dgram module which is used to bind the particular data gram server to a particular port with some required information.

Syntax:

const socket.bind(options[, callback])

Parameters: This method takes the following parameter:

• option: It can use the following parameters- 
  
  • port: port value.
  • address: address
  • exclusive: Boolean value true or false.
  • fd: Integer value.
• callback: Callback function for further operation.

Return Value: This method returns the object which contains the address information for the socket.

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

Filename: index.js

Output:

{ address: '0.0.0.0', family: 'IPv4', port: 1234 }
UDP String: Hello

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

Filename: index.js

Output:

server listening 0.0.0.0:1234
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_bind_options_callback