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Questions tagged [inetaddress]

227 questions
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Java network programming InetAddress objects

I am creating a chat application using java sockets programming. I want to launch it in my local network which means my application doesn't require internet to run. I tested the application on my computer itself by using the…
nitish712
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InetAddress withouth using Scriptlets

Is there a way to do: java.net.InetAddress.getLocalHost().getHostName() without using JSP Scriptlets? Looking for a more conventional solution, probably using JSTL capabilities to achieve this. Take note that ${pageContext.request.*} jstl function…
link_boy
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InetAddress.getByName very slow for some hosts, but not others

I have noticed that InetAddress is very slow for some hosts. Below is the relevant code final long startTime = System.currentTimeMillis(); try { System.out.println("start"); InetAddress address = InetAddress.getByName("smartface.com"); …
Arya
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Problem using Java inetAddress.isReachable with AWS EC2

There is a simple code on Java 8 which just check if the host is reachable InetAddress inetAddress = InetAddress.getByAddress(ipBytes); return inetAddress.isReachable(timeOutMS) ? "UP" : "DOWN"; There are two different ip addresses (lets say…
Сергій Катрюк
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How to retrieve the host name by IP with dnsjava library?

I'm trying to retrieve the host name (or domain) of an IP address with dnsjava library by using a SimpleResolver and the ReverseMap and I wrote the following code: import java.net.InetAddress; import java.net.UnknownHostException; import…
Edgar Becker
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Convert Set to Set in Java in a cleaner way

I have the following code: Set ips = allowedIpsToDescriptions.keySet(); where allowedIpsToDescriptions is a Map I'm trying to convert Set to Set and here's my code: Set allowedIpsInetAddr =…
jayteezer
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Is InetAddress a static class? why do we not use new key word with it?

Why we have not used newkeyword in the following program? import java.net.InetAddress; public class InetDemo{ public static void main(String[] args){ try{ InetAddress ip=InetAddress.getByName("www.pinterest.com"); …
Jigar Subhash Rajput
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InetAddress.getByName returns "akamaitechnologies.com for non-existent host

I have found that resolution of a hostname that does NOT exist always returns an address belonging to "akamaitechnologies.com" (e.g. 23.221.222.250). It does work correctly for hosts that do exist. Code: InetAddress addr = InetAddress.getByName(…
DontPanic
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How does InetAddress find the IP of a given hostname?

How does InetAddress work? How does it find an IP address of a hostname. I understand we can use InetAddress in Java for DNS resolutions, but I would like to know how it works. How does it find a DNS server to resolve the address? I recently saw a…
Optimus Prime
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In the internals of an ContextListener how can I find out the port the Web App is running on

In the internals of an ContextListener how can I find out the port the Web App is running on I have a Java Web app project with JSP pages as frontend. The project implements a ServletContextListener to connect to the backend. This ContextListener…
halloleo
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Android Studio No address associated with hostname using Inet Address

I'm having a problem with my ip lookup program in Java I've imported Inet Adress and implementd the async task and used the permission on the manifest but still shows the same problem. The Error: Unable to resolve host "[Ljava.lang.String;@f1679a5":…
revolutionarybreak
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I can't check any solution for Inet Address in Android

So I'm trying to get the Ips of the websites on my app and I'm having a lot of problem with this one as a newbie I'm searching everywhere but no clue. I tried on intelij and it works fine while on android it gives hell lot of…
revolutionarybreak
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Inet Adress Library Shows: Main Thread Error On Java Android Studio App

I've Been creating an app about checking the ip of x websites and I've imported:java.net.InetAddress and It will work on intelij but on android studio the try/catch block catches some errors: android.os.NetworkOnMainThreadException. So this the code…
revolutionarybreak
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How to know ip address with java.net InetAddress or other API

I have UDP server to listen messages, and I need to bind to device IP address. Other devices send messages on the UDP server. I use next: InetAddress address = InetAddress.getLocalHost(); // gives 127.0.1.1 (1) address =…
Valeriy K.
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How to find SUB-NET for a defined IP Group.?

I need to find out how an IP group is divided between subnets inside the network. For example, I have an IP range 192.168.0.0 - 192.168.255.255 and I have to guess how it's divided inside. Maybe they are divided in /23 or /24 or few of them are…
Rajesh Fujitsu
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