import java.io.*; public class Assignment2 { public final static void main(String[] argv) { NetworkSimulator simulator; int nsim = -1; double loss = -1.0; double corrupt = -1.0; double delay = -1.0; int trace = -1; long seed = -1; String buffer = ""; BufferedReader stdIn = new BufferedReader( new InputStreamReader(System.in)); System.out.println("Network Simulator v1.1"); while (nsim < 1) { System.out.print("Enter number of messages to simulate (> 0): " + "[10] "); try { buffer = stdIn.readLine(); } catch (IOException ioe) { System.out.println("IOError reading your input!"); System.exit(1); } if (buffer.equals("")) { nsim = 10; } else { try { nsim = Integer.parseInt(buffer); } catch (NumberFormatException nfe) { nsim = -1; } } } while (loss < 0.0) { System.out.print("Enter the packet loss probability (0.0 for no " + "loss): [0.0] "); try { buffer = stdIn.readLine(); } catch (IOException ioe) { System.out.println("IOError reading your input!"); System.exit(1); } if (buffer.equals("")) { loss = 0.0; } else { try { loss = (Double.valueOf(buffer)).doubleValue(); } catch (NumberFormatException nfe) { loss = -1.0; } } } while (corrupt < 0.0) { System.out.print("Enter the packet corruption probability (0.0 " + "for no corruption): [0.0] "); try { buffer = stdIn.readLine(); } catch (IOException ioe) { System.out.println("IOError reading your input!"); System.exit(1); } if (buffer.equals("")) { corrupt = 0.0; } else { try { corrupt = (Double.valueOf(buffer)).doubleValue(); } catch (NumberFormatException nfe) { corrupt = -1.0; } } } while (delay <= 0.0) { System.out.print("Enter the average time between messages from " + "sender's layer 5 (> 0.0): [1000] "); try { buffer = stdIn.readLine(); } catch (IOException ioe) { System.out.println("IOError reading your input!"); System.exit(1); } if (buffer.equals("")) { delay = 1000.0; } else { try { delay = (Double.valueOf(buffer)).doubleValue(); } catch (NumberFormatException nfe) { delay = -1.0; } } } while (trace < 0) { System.out.print("Enter trace level (>= 0): [0] "); try { buffer = stdIn.readLine(); } catch (IOException ioe) { System.out.println("IOError reading your input!"); System.exit(1); } if (buffer.equals("")) { trace = 0; } else { try { trace = Integer.parseInt(buffer); } catch (NumberFormatException nfe) { trace = -1; } } } while (seed < 1) { System.out.print("Enter random seed: [random] "); try { buffer = stdIn.readLine(); } catch (IOException ioe) { System.out.println("IOError reading your input!"); System.exit(1); } if (buffer.equals("")) { seed = System.currentTimeMillis(); } else { try { seed = (Long.valueOf(buffer)).longValue(); } catch (NumberFormatException nfe) { seed = -1; } } } System.out.println("******************************************************************************"); System.out.println("******** Running network simulator with parameters *********"); System.out.println("******************************************************************************"); System.out.println("nsim="+nsim); System.out.println("loss="+loss); System.out.println("corrupt="+corrupt); System.out.println("delay="+delay); System.out.println("trace="+trace); System.out.println("seed="+seed); simulator = new NetworkSimulator(nsim, loss, corrupt, delay, trace, seed); simulator.runSimulator(); System.out.println("******* End of Simulation with parameters *********"); System.out.println("nsim="+nsim); System.out.println("loss="+loss); System.out.println("corrupt="+corrupt); System.out.println("delay="+delay); System.out.println("trace="+trace); System.out.println("seed="+seed); System.out.println("*********************************************"); System.out.println("Received Data ******************************"); System.out.println(simulator.getReceivedData()); System.out.println("Number of Delivered Messages ******************************"); System.out.println(simulator.getNumberDelivered()); System.out.println("*********************************************"); System.out.println("Simulation time:"+simulator.getTime()); System.out.println("******************************************************************************"); } }
