User:Rajb245: Difference between revisions

Revision as of 20:49, 1 October 2008

Raj Bhattacharjea is a full time developer of ns-3 in the employ of the Georgia Institute of Technology.

tcp-star-server example added
tcp-errors example checked in. Subsequently removed.
Cleaned up some TCP doxygen.
Evensky test case added as a regression test and announced to list. Subsequently removed.
Make PacketSink multitasking for TCP (closed bug 244)
Fix TcpSocketImpl rx buffer logic (closed bug 248)

Fix TCP closedown FINs (closed bug 242)
Actually implemented TCP finite rx buffer (closed 239)
Extensively tested ns-3 in prep for the 3.2 release
- filed bug 323 waf --valgrind doesn't check for valgrind first
- filed bug 337 opt build fails in address.cc on Ubuntu 8.10
- filed bug 343 utils/bench-packets is broken and asserts
- filed bug 349 packet unit test fails on optimized build
- filed bug 358 calling listen on non-closed TCP sockets sends resets, sh...
- filed bug 359 *SocketImpl::Bind returns something other than -1
Helped Mathieu debug GTNetS TCP port for ns-3-simu use for his demo. End result was deciding that nsc is more mature at this point, but working through the issues identified some bugs, and got me a working simu setup to use for testing purposes.

Debugged the code mailhook, there are two related issues
- ns-commits list is probably set up only to allow posts from tomhend@u.washington.edu and code@nsnam-code.ece.gatech.edu; code@nsnam.ece.gatech.edu needs to be added to the ns-commits list as a valid poster
- Even if this is done though, it turns out that the mailhook script is running as whoever pushes the commit, not as user code (i.e. when I push, the script runs as user raj, and the mail command sends a mail from raj@nsnam.ece.gatech.edu; how do I ensure that the mailhook script runs as user code every time?
error with hg-ssh file is preventing check ins to the new ns-3-dev
Web migration requires some small downtime to reset sql passwords
dump/backup the sql databases, migrate and import them on the new server

Basics of ns3 overall model
- Nodes
- Protocol stacks
- NetDevices
- Channels
- Packets
Interesting Implementation Details
- Aggregation/GetObject
- Role of callbacks
Primer on tracing
Primer on attributes system
- Show the gtkconfigstore
Possible ports of some more GTNetS stuff (Jeffay example, http browsers and servers)
- http port(s) might not be necessary with simu being able to do microhttpd
Explain the statistics framework
Show some potential visualization (nam, Gustavo's python stuff?)

Cleanup TcpSocketImpl::Recv code (its ugly and inefficient)
Address bug 250
Use ns-3-simu to debug TCP
- process microhttpd<->simulator "native" TCP<->tap net device<->real linux<->real firefox
- replacing simulator "native" TCP from above with NSC works, but above setup doesn't, indicating bugs

@@ Line 39: / Line 39: @@
 === Server Migration ===
-* Debugged the code mailhook, appears to be working on our end, we think it is a firewall issue, computer support has been mailed about a possible firewall issue
+* Debugged the code mailhook, there are two related issues
+** ns-commits list is probably set up only to allow posts from tomhend@u.washington.edu and code@nsnam-code.ece.gatech.edu; code@nsnam.ece.gatech.edu needs to be added to the ns-commits list as a valid poster
+** Even if this is done though, it turns out that the mailhook script is running as whoever pushes the commit, not as user code (i.e. when I push, the script runs as user raj, and the mail command sends a mail from raj@nsnam.ece.gatech.edu; how do I ensure that the mailhook script runs as user code every time?
 * error with hg-ssh file is preventing check ins to the new ns-3-dev
 * Web migration requires some small downtime to reset sql passwords