Node.js net.SocketAddress() Method

In this article, you will learn about the Node.js net.SocketAddress() function with its syntax, parameters, and examples.

What is the Node.js net.SocketAddress() function?

Within Node.js applications, the "net.SocketAddress()" class would offer an organized and standardized method of encapsulating and managing socket address information. Numerous networking tasks, including logging, monitoring, and connection management in server and client contexts, might benefit from this.

The net module is a fundamental Node.js module, which provides an API to create TCP (Transmission Control Protocol) and IPC (Inter-Process Communication) servers and clients. This module is required to create applications that need to communicate via a network, such as chat servers, HTTP servers, or any other server-client architecture.

The purpose of a SocketAddress class would seem to be to encapsulate the details of a network endpoint, even if net.SocketAddress() is not expressly documented. The IP address, port number, and address family (IPv4 or IPv6) are among the important details included here. This abstraction may make network address information management and organized distribution easier.

Syntax:

It has the following syntax:

Parameters:

• Const: In JavaScript, this keyword declares a constant variable. The value set to this variable cannot be changed.
• Socket: It is the name of the constant variable being declared. It will contain the SocketAddress object instance.
• New: In order to create an instance of an object using a constructor function, use the new keyword. It creates the constructor's context and allocates memory for a new object.
• Net_Module: It is a representation of the module object of which the script's import was made. It refers to the Node.js net module or a hypothetical extended module that contains the definition of SocketAddress.
• SocketAddress: It is the Net Module's constructor function, often known as a class. This is probably a class used to manage socket addresses.
• [Options]: This option is a parameter. The options parameter accepts an object with configurable properties to initialize the SocketAddress instance. These properties usually include details like the IP address, port, family, and flow label.

Return Value:

• socket.address: <string> IP address is returned.
• socket.family: <string> Returns the IPv4/IPv6 family of addresses.
• socket.flowlabel: <number> Returns an ipv6 flow label as a numerical value.
• socket.port: <number> Port number is returned.

Example-1:

Let us take an example to illustrate the Node.js net.SocketAddress() function.

Output:

 SocketAddress { address: '127.0.0.1', port: 0, family: 'ipv4', flowlabel: 0 } 

Explanation:

In this example, the net module is imported from Node.js and assigned to Net_Module at the start of the code. Next, it calls the SocketAddress class's constructor in the net module with the default options, resulting in the creation of an object with the name obj. After that, the network socket address details are contained in this class. Lastly, the properties of the newly created object, obj, are printed to the console. Using the net module of Node.js, the code demonstrates the fundamentals of object creation and logging properties linked to networks.

Example 2:

Let us take another example to illustrate the Node.js net.SocketAddress() function.

Output:

 The socket Address is: 192.168.1.1 Socket Family is: IPv4 Socket Flowlabel is: 0 Socket Port is: 8080 

Explanation:

In this example, the SocketAddress class, which is defined in the code, is included in a Net_Module object and initialized with default values for address, port, family, and flowlabel. For every property in the class, there are getter and setter methods. Using the given options (address, port, family, and flowlabel), a SocketAddress object is generated. Next, the console is output with the instance's property values. Socket address configuration creation and modification are made simple by this structure.

Applications:

A SocketAddress class would simplify the handling of network addresses in real-world applications, especially in complicated systems where network configuration parameters must be shared and changed often. By encapsulating this information into an object, developers may optimize the readability of code and reduce errors.