String c = sc.next().trim();
				if(c.equals("c")){
					//TODO: request access here!
					System.out.println("starting two phase commit.");
					coordinator.startCommit();
				}else if(c.equals("e")){
					System.out.println("exiting..");
					sc.close();
					lt.finish();
					return;
				}else if(c.equals("c")){
					System.out.println("Active clients:");
					for (Map.Entry<Socket, Participant> entry : connections.entrySet()) {
						System.out.println(entry.getValue());
					}
				}else{
					System.out.println("unrecognized command.");
				}