Scan for servers

Processing Libraries
1

Hey Guys,
I’m using the Processing network library and want to search for possible Processing servers. How is that possible?

1 Like
2

Hello,

I had some success with this:

Minimal code to get you started < Expand this! 
import java.io.*;
import java.net.*;
boolean state = false;

void setup()
  {   
  try 
    {
    InetAddress address = InetAddress.getByName("192.168.1.100");
    //System.out.println("Name: " + address.getHostName());
    //System.out.println("Addr: " + address.getHostAddress());
    state = address.isReachable(3000); 
    System.out.println("Reach: " + state);
    }
  catch (UnknownHostException e) 
    {
    System.err.println("Unable to lookup...");
    }
  catch (IOException e) 
    {
    System.err.println("Unable to reach...");
    }      
  }

You can write the rest to scan IPs.

Not so much (slow) with this:


I also had to run Processing as “administrator” to ping.
I just included as a reference.

That was fun!
I can use this in future…

:)

1 Like
3

Thank you.
But there is another question from me. Is it possible to find all servers with the same IP address (different ports) without pinging each port?

4

Hello,

I branched off on a tangent with my answer and it only finds reachable IP’s.
I don’t have an answer for ports at this time and would have to seek one.

Back to work and busy these days…

Keep looking!

And I am back already!

I did find this:

And so far got this and it did detect an active server port:

image
image832×716 38.6 KB

I got a “false” if I looked for a port “12347” that was not active.

Using the server example:
image

I may explore this more later…
It is my first time exploring this also.

:)

1 Like