telnet-client

What is telnet-client?

The telnet-client npm package is a simple and easy-to-use library for creating and managing Telnet connections in Node.js. It allows you to connect to Telnet servers, send commands, and receive responses, making it useful for automating tasks, remote server management, and network device configuration.

What are telnet-client's main functionalities?

Establishing a Telnet Connection

This feature allows you to establish a connection to a Telnet server using specified parameters such as host, port, shell prompt, and timeout.

const Telnet = require('telnet-client');
let connection = new Telnet();

let params = {
  host: '127.0.0.1',
  port: 23,
  shellPrompt: '/ # ',
  timeout: 1500
};

connection.connect(params)
  .then(() => {
    console.log('Connected to the Telnet server');
  })
  .catch((error) => {
    console.error('Connection failed:', error);
  });

Sending Commands

Once connected, you can send commands to the Telnet server and handle the responses. This is useful for executing remote commands and automating tasks.

connection.send('ls -l')
  .then((response) => {
    console.log('Command response:', response);
  })
  .catch((error) => {
    console.error('Command failed:', error);
  });

Handling Connection Events

You can handle various connection events such as timeout and close to manage the connection lifecycle and handle errors or disconnections gracefully.

connection.on('timeout', () => {
  console.log('Connection timed out');
  connection.end();
});

connection.on('close', () => {
  console.log('Connection closed');
});

Other packages similar to telnet-client

node-telnet-client

node-telnet-client is another Telnet client library for Node.js. It offers similar functionalities to telnet-client, such as establishing connections, sending commands, and handling responses. However, it provides a more extensive set of options for connection parameters and event handling, making it a bit more flexible for advanced use cases.

telnet-stream

telnet-stream is a low-level Telnet client library that provides a stream-based interface for Telnet communication. It is more suitable for developers who need fine-grained control over the Telnet protocol and want to build custom Telnet clients. Compared to telnet-client, it requires more effort to set up and use but offers greater flexibility.

README

Testing state