Introduction

Ident Protocol is an Internet protocol that helps identify the user of a particular TCP connection.

One popular daemon program for providing the ident service is identd.

This is a client based ident protocol library, where you can request an identity to an ident server.

Request Options

• address --> the identd server ip address
• port --> identd server port, if is undefined 113 is used by defualt
• server_port --> local port from the identd server machine
• client_port --> remote port where the identd server machine is connected to
• abort --> feel free to abort a connection if they receive 1000 characters without receiving an , by default is true.

Response Structure

• server_port --> same as the request options
• client_port --> same as the request options
• status --> status of the response
• opsys --> opsys type, if opsys is defined, then is an ident reply
• userid --> userid string or Buffer, if userid is defined, then is an ident reply
• error --> error type, if error type is defined, then is an error reply
• charset --> custom charset, if charset is defined then userid is type of buffer. If is not then userid is an string with US-ASCII charset.

Error Types

• UNDEFINED_SERVER_PORT --> undefined server prot
• UNDEFINED_LOCAL_PORT --> undefined local port
• INVALID_RESPONSE_LENGTH --> invalid response length
• INVALID_STATUS_RESPONSE --> invalid status response
• INVALID_OPSYS_RESPONSE --> invalid opsys response
• INVALID_CHARSET_RESPONSE --> invalid charset response
• INVALID_USERID_LENGTH --> invalid userid length
• INVALID_ERROR_TOKEN --> invalid error token length

Example

import Identd, { Response } from "identd";

Identd.request({
    address: '172.26.41.85',
    server_port: 39904,
    client_port: 4444
})
.then((response : Response) => console.log(response))
.catch(err => console.log("Some error: " + err));

References

• https://www.rfc-editor.org/rfc/rfc1413 (ident proto)
• https://www.rfc-editor.org/rfc/rfc1340 (for charset)