tcpprovider.java

一个小型网络仿真器的实现

/*
   JaNetSim  ---  Java Network Simulator
   -------------------------------------

   This software was developed at the Network Research Lab, Faculty of
   Computer Science and Information Technology (FCSIT), University of Malaya.
   This software may be used and distributed freely. FCSIT assumes no responsibility
   whatsoever for its use by other parties, and makes no guarantees, expressed or
   implied, about its quality, reliability, or any other characteristic.

   We would appreciate acknowledgement if the software is used.

   FCSIT ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION AND
   DISCLAIM ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING
   FROM THE USE OF THIS SOFTWARE.
*/

package janetsim.component;

public interface TCPProvider {

  public double getDelay(); //tcp packet processing delay, in usecs
  public double getDelayVar(); //tcp packet processing delay variation, in usecs
  public int getMaxWindowSize(); //receiver's maximum window size (in bytes)
  public int getMaxSegmentSize(); //maximum segment size (in bytes)
  public double getRTT_alpha(); //srtt update weight, recommended 1/8
  public double getRTT_beta(); //rttvar update weight, recommended 1/4
  public double getRTT_lbound(); //RTT lower bound (in seconds)
  public double getRTT_ubound(); //RTT upper bound (in seconds)
  public int getTCPCongestionControl(); //returns the desired TCP
                                        //Congestion control scheme,
                                        //supported values are:
                                        // 1: Tahoe (`sub'Reno)
                                        // 2: Reno
                                        // otherwise: Standard
  public long getLogFactor(); //the "Logging Every n Tick" value

  public void sendPacket(IPPacket packet); //sends an IP packet out
  public void statusChanged(); //notification of connection status changed
}