import java.util.ArrayList;
import java.util.HashMap;
-import java.util.HashSet;
import java.util.Iterator;
import java.util.Map.Entry;
import org.simgrid.msg.Host;
import org.simgrid.msg.Msg;
import org.simgrid.msg.MsgException;
-import org.simgrid.msg.RngStream;
import org.simgrid.msg.Process;
+import org.simgrid.msg.RngStream;
import org.simgrid.msg.Task;
-import bittorrent.Connection;
-
/**
* Main class for peers execution
*/