Use DatagramSocket to See Who’s Calling Your Server

You can use java.net.DatagramSocket class to identify a remote machine that is accessing your server. The class java.net.DatagramSocket represents a socket for sending and receiving datagram packets. A datagram socket is the sending or receiving point for a connectionless packet delivery service. Each packet sent or received on a datagram socket is individually addressed and routed. Every packet will have the address and port from which it was sent. Multiple packets sent from one machine to another may be routed differently, and may arrive in any order.

In Java, a datagram packet is represented by java.net.DatagramPacket. The following demonstrates how touse DatagramSocket to identify a remote machine calling your server:

 DatagramPacket aPacket = null;// get the next datagram packetaDatagramSocket.receive (aPacket);/*	aDatagramSocket is an instance of java.net.DatagramSocket thatyou've      bound to a port on the local machine*/String remoteIp = aPacket.getAddress().getHostAddress();String port = aPacket.getPort();System.out.println ("Packet received from IP: " + remoteIP + " at port: " +port);
Share the Post:
Share on facebook
Share on twitter
Share on linkedin

Overview

The Latest

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS