Ns-3.21

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This page summarizes the release planning for ns-3.21. The ns-3 release process is listed here and here.

The release manager is Tom Henderson.

Release schedule

ns-3.21 is planned for September 17, 2014. New feature code should be ready for merge by no later than 5 September. An initial release candidate should be available by 12 September.

Packaging

ns-3.21 will be packaged as a source tarball as before: ns-allinone-3.21.tar.bz2.

The tarball will contain:

• Latest version of pybindgen
• Latest version of netanim
• ns-3.21
• bake

where bake is used to fetch optional ns-3 components, including DCE.

A patch from ns-3.20 to ns-3.21 will also be posted.

Release platforms

We usually try to keep pace with the latest popular versions of Linux, OS X, and FreeBSD. For the ns-3.21 release, we plan to support the following systems and compilers:

• OS X 10.9 Mavericks with Xcode 5.1
• Ubuntu 14.04 (gcc-4.8)
• Fedora 20 (gcc-4.8)
• Debian 7 (gcc-4.9)
• Ubuntu 10.04 LTS (gcc-4.4)
• Ubuntu 12.04 LTS (gcc-4.6)
• Centos 6.4 (gcc-4.4)
• FreeBSD 9.3 (clang 3.3)

New features

Pending new features:

• Self-Delimiting Numeric Values (https://codereview.appspot.com/97540043/)
  • Update: Slipping to ns-3.22
• TCP options code from SOCIS TCP project (including window scale and timestamps)
  • Code review issue: https://codereview.appspot.com/110860043/
  • Update: A repo (http://code.nsnam.org/repositories/tomh/ns-3-dev-tcp-options-for-merge) is staged for final review; a few minor issues are being worked out for Friday Merged
  • RttEstimator improvements will slip until ns-3.22
• (enhancement) Add propagation delay capability to SimpleChannel (for testing purposes)
  • code review issue: https://codereview.appspot.com/132870043/ Merged
• CoDel queue support (from GSoC bufferbloat project)
  • Update: A repo (http://code.nsnam.org/repositories/tomh/ns-3-dev-codel-for-merge) is staged for final review Merged
  • FQ-CoDel and SFQ-CoDel will slip until ns-3.22
• Energy harvesting model
  • Code review issue: https://codereview.appspot.com/103750047/
  • Update: Cristiano has updated this and it appears ready for merging Merged
• LTE FFR models from GSoC project
  • Code review issue: https://codereview.appspot.com/130130043/
  • Update: Piotr has created a staging repo for final merge: http://code.nsnam.org/pgawlowicz/ns-3-dev/ Merged

WiFi-related:

• Wifi Sleep mode
  • Update: Stefano has created a final patch (emailed offlist), ready for merge with Cristiano's energy harvesting patch Merged
• MPDU aggregation
  • Will slip to ns-3.22
• new VANET example
  • Update: Not yet ready for merge, may slip to ns-3.22

Software maintenance issues

• Remove emu module from codebase (1945) (Tom Henderson)
• Mesh test crashes for certain configurations
  • There is likely not enough time to finish this off before release
• Time arithmetic consistency
  • There is likely not enough time to finish this off before release
• Wstrict-overflow and gcc-4.9 (Tom Henderson and Peter Barnes)
  • Tom to take next step to see what progress he can make on this bug
• Remove unnecessary dependency on Application module in other modules (1941) Tommaso Pecorella
  • Depends on merging of simple applications https://codereview.appspot.com/45320043 merged
  • Cleanup of remaining modules dependent on applications (aodv, mesh, olsr, lte) will slip to 3.22

Bugs or issues in ns-3 core

• Command line argument handling (1972) Peter Barnes (patch in bugzilla)
• GetInteger off-by-one (1964) Peter Barnes and Tom Henderson
• RandomVariableStream::GetStream returns -1 for all automatically assigned streams (1962) Peter Barnes
• Config::Path not parsed correctly (1959) Tom Henderson
• L4 protocol sockets should support BindToNetDevice over IPv6 (1824) Tommaso Pecorella - waiting comments
• AODV can not work on nodes with more than one NetDevice (1911) Tommaso Pecorella - waiting comments

Also Possible

• Close Changing the simulation time resolution does not work well with attributes (954) ?
• Apply patch for Storage of the log name in LogComponent (1652) ?
• Close feature request: non-doxygen trace source introspection program needed with status Resolved?

Bugs in models being worked by someone

TBD

Documentation improvements

• improve documentation on linking ns-3 with other libraries (Tom Henderson)
  • Not likely to be fully fixed for ns-3.21 but may take a stab at this, time permitting
• Wifi documentation patch from Sebastien Deronne (Daniel L)
• Fix tutorial first.cc and documentation to explicitly call out the need for StopApplication() (Tommaso and/or Tom)