ns: Change History

v1.0a15

• First cut as adding code for "tcp-sack1" and "sack1-tcp-sink", from Matt Mathis (mathis@zippy.psc.edu) and Jamshid Mahdavi (mahdavi@psc.edu).
• Changed format of window and RTT reports sent from tcp.cc to the trace file.
• Added "maxpkts" for ftp and telnet sources.

  ---

  v1.0a14 Fri Dec 1 10:35:30 PST1995

  • Finished port of TCP with selective acks, along with SACK acceptance tests in "test-sack".
  • Added a modified version of Reno TCP, tcp-newreno.cc, for research purposes.
  • Have not yet added tcp-sack or tcp-newreno to the man page.

  ---

  v1.0a13 Wed Nov 22 15:14:50 PST 1995

  • Finished port of cbq code from tcpsim (with contributions from Michael Speer), and added cbq simulator tests.
  • Added unique ID to each event in scheduler queue and added hook to lookup an event by using this ID.
  • Added hook for deleting at callbacks.
  • Fixed bugs in multicast delivery where agent could modify routing desstructors during the callback.
  • First cut at port of TCP with selective acks.

  ---

  v1.0a12 Sun Nov 5 21:19

  • Added config.h and loss-monitor.cc to FILES so they get included in tar.

  ---

  v1.0a11 Sun Nov 5 21:19

  • Added loss-monitor agent, which is the same as a null-sink but calls a tcl proc whenever there is a gap in the received sequence space. Will expand functionality as necessary for MMG experiments.
  • Integrated more mature tcl/c++ architecture from vic/vat. This has a major impact on the way ns objects are created and deleted, but we maintain backward compatibility with previous versions. The "ns" command is no longer implemented in C++, but rather as a library function (in ns_default.tcl) that provides glue between the old commands and the new "new/delete" interface.
  • First cut at port of cbq code from tcpsim.

  ---

  v1.0a10 Fri Oct 27 17:44:39 PDT 1995

  • Added "flush" method to trace objects so that output can be flushed before exiting.
  • Added link-level src/dst fields to Packet class so node can tell which "interface" a packet arrived on.
  • Added support for dense-mode PIM style flooding with prune/graft machinery.

  ---

  v1.0a10 Fri Oct 27 17:44:39 PDT 1995

  • Fixed test-suite.tcl so that old awk works. Problem reported by Kannan Varadhan.
  • Fixed Makefile.in to use V_LIB_TCL, as intended. Fix supplied by Kannan Varadhan.

  ---

  v1.0a9 Wed Oct 11 16:58:00 PDT 1995

  • Fixed solaris compilation problems.
  • Changed configure to use "-mv8 -msupersparc" only for gcc.

  ---

  v1.0a8 Fri Sep 29 15:11:04 PDT 1995

  • Fixed more for-stmt scope bugs.
  • Fixed compilation problems with Sun and DEC compilers. Problem reported by Thierry Turletti.

  ---

  v1.0a7 Wed Sep 27 19:55:23 PDT 1995

  • First public (alpha) release.
  • Included man page to FILES so it goes in tar.
  • Updated README.

  ---

  v1.0a6 Sep 21 09:24 PDT 1995

  • Added "bug-fix" hook to tcp reno.
  • Ported to tcl-7.4.
  • Include Matt Mathis' test-all script.
  • Changed "for" statement conventions to adhere to the proposed ANSI standard change which re-defines the lexical scope semantics of the initializer statement. In order to be compatible with both the old and new semantics, we have changed all instances of
    • for (int i = ... ) ...
    • use(i);
    to
    • int i;
    • for (i = ... ) ...
    • use(i);

  ---

  v1.0a4

  • Fixed bug in xgraph output: new version of xgraph doesn't understand FileorDev because it now uses the PRINTER environment variable. Bug fix from Matt Mathis (mathis@psc.edu).
  • Added a 'test-all' sh script to distribution, which runs whole suite of regression tests and compares them against a reference output. Thanks to Matt Mathis (mathis@psc.edu).
  • Don't include tk.h from Tcl.cc.

  ---

  v1.0a1 Mon Jul 31 16:05:08 PDT 1995

  • Changed all references to random() to use Random class so we can easily change our pseudo-random number generator.
  • Added convention to object names so we can derive their type from their name.
  • Changed nodes to be first class objects like rest of objects.
  • Changed trace syntax to use tcl files rather than it's own open/close. For example,
    • set f1 [open out.hop w]
    • $trace attach $f1
  • Changed '-' and 'd' trace records to have same format as '+' and 'h' trace records.
  • Incoporate vic's "matcher" abstraction into agent and link models.
  • Major hacking to port tcpsim to tcl framework.