多个IPv4发送HTTP请求

Question

I'm new to the networking side of java and I need some help.

My ifconfig on my ubuntu machine: (I have 3 IPs I want to use)

ens18
          inet addr:1.123.123.123  Bcast:1.123.191.255  Mask:255.255.255.0

ens18:0
          inet addr:1.123.123.124  Bcast:1.123.191.255  Mask:255.255.255.0

ens18:1
          inet addr:1.123.123.125  Bcast:1.123.191.255  Mask:255.255.255.0

I want to be able to send HTTP request through each of them, example:

URL url = new URL("http://google.com");

Proxy p = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("1.123.123.123", 8080));
Proxy p2 = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("1.123.123.124", 8080));
Proxy p 3= new Proxy(Proxy.Type.HTTP, new InetSocketAddress("1.123.123.125", 8080));


HttpsURLConnection connection = (HttpsURLConnection) url.openConnection(p);

int responseCode = connection.getResponseCode();

etc... loop through all IPv4 on machine

I have looked on the internet and can't find any code that will work for what I'm trying to do.

1) How do I find all IPv4 on my machine 2) Is that the correct code to send HTTP request through each IP?

Thank you

Answer 1

1.

InetAddress[] allAddresses = InetAddress.getAllByName("localhost");
InetAddress[] ip4Addresses = Arrays.stream(allAddresses)
                                   .filter(address -> address.getHostAddress().indexOf("::") == -1)
                                   .toArray(InetAddress[]::new);

2. Yes, that's how you send requests through a proxy