How can I bind serversocket to specific IP?

Question

If I have a String representing an IP address (IPv4 or IPv6) how can I create a ServerSocket and bind to this IP without caring if the IP passed in, is IPv4 or IPv6?
I see that there is a constructor:ServerSocket(int port, int backlog, InetAddress bindAddr) but InetAddress does not seem to offer any constructors and its subclasses have names specific to IPv4 and IPv6.
So how can I bind the socket to the IP?

Arturoartus

Answer 1

You can use the factory method INetAddress.getByName. It'll figure out which subclass to use. For example:

InetAddress addr = InetAddress.getByName("127.0.0.1");
// or
InetAddress addr = InetAddress.getByName("::1");

// and now you can pass it to your socket-constructor
ServerSocket sock = new ServerSocket(1234, 50, addr);

Mercaptopurine

You mean pass in my IP and get back the object? – Arturoartus

@Jim: Yes, exactly! I have added an example on how to use it. – Mercaptopurine

just a note: The default 'backlog' is 50 :D. – Indeed

another note: using 0 as backlog will use the default value – Berkeleian

what is 'back log'? – Fat

Using "127.0.0.1" will still spawn an IPv6 server as shown by netstat -letW in adb shell. – Biodegradable