如何将Java侦听接口从localhost更改为IP地址？

Question

as the title mention, how i can change the java listening interface from localhost to IP address. since this command netstat -tulpn shows:

tcp     0      0 127.0.0.1:7778     0.0.0.0:*     LISTEN      23958/java

I want to change 127.0.0.1 for example to 192.168.1.1 without using sockets, for example to specify it in java configuration files or in jade files.

I want to do that in order to make that port reachable to allow the migration of mobile agent from remote machine to this machine.

Answer 1

If you use a ServerSocket , you have to use the three-argument constructor to do that; the third argument is then the listening address for this socket.

Similar constructors/factory methods exist for ServerSocketChannel s etc.

Answer 2

For you to have a listener for an address other than the loopback/localhost address, there has to be an available network interface to listen on. If you don't have additional network adapters on the machine I don't see how you're going to accomplish your task.

If you do have additional network adapters, use the NetworkInterface.getNetworkInterfaces() to get all the available adapters the machine has to offer and pick which want you want to set your listener to.

This SO thread should give you some insight on getting the available network adapters. How to enumerate IP addresses of all enabled NIC cards from Java?

If you're wanting to use the localhost as the listener, because you have apps on the local machine that need to talk to your server, why is using the loopback address not an option for you?

Answer 3

The problem was in the configuration in my /etc/hosts. so i solve it by configure it correctly