// Example by Tom Igoe 
 
import processing.net.*; 
 
int port = 10002; 
Server myServer; 
 
void setup() 
{ 
  size(400, 400); 
  background(0); 
  myServer = new Server(this, port); 
} 
 
void draw() 
{ 
  // Get the next available client 
  Client thisClient = myServer.available(); 
  // If the client is not null, and says something, display what it said: 
  if (thisClient !=null) { 
    String whatClientSaid = thisClient.readString(); 
    // If the client says "exit", disconnect it 
    if (whatClientSaid.equals("exit\r\n")) { 
      thisClient.write("You will be disconnected now.\r\n"); 
      println(thisClient.ip() + "\t has been disconnected"); 
      myServer.disconnect(thisClient); 
    } 
  } 
}