..:: D-ITG, Distributed Internet Traffic Generator ::..

ChangeLog

v2.8.1

New Features
- ITGSend
  - Added -Fp to read payload content from file instead of using random bytes
- ITGDec
  - Added -c option to generate a combined log including all the metrics
- Common
  - Added -q option to ITGSend, ITGRecv and ITGLog to set the log buffer size
Improvements
- ITGSend
  - Renamed onoff mode to bursty mode
  - Improved inline help screen
- ITGRecv
  - Improved thread management with explicit detach request upon creation
  - Improved support for IPv6 on Windows (dual stack is now supported starting from Vista)
  - Improved startup output on Windows with multiport=on
- ITGDec
  - Forced buffer flush when generating Octave output to allow in-pipe live plotting
- Makefiles
  - Improved Linux->Windows cross-compilation using Mingw
  - Cleaned make output and inline help
  - Added simple checks for dependencies with hints on errors
  - Added a wrapper Makefile to select the right mk file depending on the operating system
- Common
  - Added support for Apple OSX without IPv6 (tested on Leopard)
  - Added support for FreeBSD without IPv6
  - Reformatted most code to make it more readable
  - Redirected all error messages to standard error
Bug Fixing
- ITGSend
  - Fixed segfault when using RTTM meter without sender-side log
  - Fixed infinite generation of traffic with bursty flows enabled and -z or -k options
  - Fixed sender-side log format with RTTM meter
  - Fixed useless wait for packets at the end of the generation with RTTM meter
  - Fixed crash caused by empty lines at the end of the script file
  - Fixed segfault SCTP multi-channel
  - Fixed RequestToSend: precise length and byte ordering on signaling channel
  - Fixed destAddr allocation
  - Fixed daemon mode crash on malformed incoming requests
- ITGRecv
  - Fixed several long-term memory leaks
  - Fixed SignalManager select fdset size causing the last socket to be ignored
  - Fixed DoS vulnerability when accepting empty connections
  - Fixed UDP thread exit on error
  - Fixed getaddrinfo bug with IPv6 addresses
  - Fixed missing flowId assignment
  - Fixed DS byte consistency in RTTM mode
  - Fixed dirty sockaddr_in mallocs on OSX
- ITGplot
  - Fixed compatibility issues with octave 3.6
- Common
  - Fixed generation deadlock with minimum packet sizes and RTTM meter
  - Applied patch from Roland Stigge to timestamp.h to solve compilation issues
  - Fixed compilation under Fedora 18, CentOS 6.3, and Debian 6.07
  - Fixed PF_INET6 cross-OS portability
  - Fixed IPv6 local-scope addresses management
v2.8.0-rc1: Beta

New Features
- ITGSend
  - Added the possibility to to a specific source address for data flows: "-sa" option
  - Added the possibility to read payload sizes and IDTs from file: "-Fs" and "-Ft" options
  - Added the possibility to specify the number of packets to generate: "-z" option
  - Added the possibility to specify the amount of Kbytes to generate: "-k" option
  - Added the possibility to specify both source and destination addresses and port numbers for the signaling channel: "-Sda" "-Sdp" "-Ssa" "-Ssp" options
  - Added the possibility to bind to a specific interface for the signaling channel: "-Si" option
  - Added the possibility to let ITGRecv decide the data destination port number: "-rp 0" option (set as default)
- ITGRecv
  - Added the possibility to change the signaling port number: "-Sp" option (ack to Grzegorz Lysko)
  - Added the possibility to specify the port number of the log server: "-L p" sub-option (ack to Grzegorz Lysko)
  - Added the possibility to bind to a specific interface for the signaling channel: "-Si" option
  - Added the possibility to bind to a specific source address for data flows: "-a" option
  - Added the possibility to receive multiple data flows on the same port number (only for TCP and UDP): requires "multiport=on" compile-time option
- ITGDec
  - Added the possibility to customize the name of output files: "-j", "-d", "-b", "-p" options
- Common
  - Added passive mode which enables ITGRecv to start the communication as a way to provide NAT traversal (only for TCP and UDP): "-H" option
Improvements
- ITGSend
  - Improved the precision in respecting IDTs lower than 1 ms by polling: "-poll" option
- ITGRecv
  - Reorganized the parser with support for sub-options
- Common
  - Adoption of portable integer types to avoid inconsistencies between different architectures
  - Improved the IPv4/IPv6 compatibility
  - Improved the error handling for TCP flows
  - Improved the signaling protocol to support crashes of endpoints without losing consistency
  - Disabled the "waitStopKey" thread by default: now requires "-gui" as the first option
  - Improved the portability of the logs
  - Enabled support for OSX (without ipv6)
  - Enabled support for uclibxx (testend under OpenWRT)
  - Improved console output to show version information and compile-time options
Bug Fixing
- ITGSend
  - Fixed the generation of TCP flows to avoid the fragmentation of the preamble
  - Fixed the header size for VoIP traffic
  - Fixed logging format when working in both OWDM and RTTM modes
  - Fixed addresses and port numbers inside log files in OWDM mode
  - Fixed the alignment of the SCTP preamble on 64 bit machines
  - Fixed the generation of random payload content
  - Fixed the generation delay to allow gaps without traffic
- ITGRecv
  - Fixed the management of the TSP_CLOSED_ERR message
  - Fixed "-l" option inline documentation
  - Fixed logging when receiving multiple flows using the sender-side "-x" option
  - Fixed the packet counter to include the last packets
  - Fixed remote logging when using sender-side "-p 2" option
- ITGDec
  - Fixed loss burst rate computation
- ITGPlot
  - Fixed to work with Octave 3.2
- Common
  - Made strtok() thread-safe
  - Fixed the compilation on 64 bit architectures
  - Fixed the remote logging to support both big- and little-endian architectures
  - Fixed the alignement of preamble fields between Linux and Windows
  - Fixed compilation errors under Windows (mingw32 and DevC++)
  - Fixed most warnings and debug messages
v2.7.0-Beta2: Beta

Improvements
- Added support for 64 bit processors
- Adopted new version of newran library
Bug Fixing
- Corrected behavior of ITGRecv with DCCP in RTTM mode
- Corrected a bug in the compilation with SCTP enabled
- Corrected behavior of IPv6 under Windows
v2.7.0-Beta: Beta

New Features
- Added Burst (aka On/Off) and Weibull traffic types
- Added the possibility to bind to a specific network interface
- ITGDec now reports the average loss-burst size also
Improvements
- Added support for compiling under Spark64 (thanks to Gerrit Renker)
Bug Fixing
- Fixed compilation errors with g++ 4.3.1
- Fixed a bug in ITGDec which caused an 'Error opening file ...' error
v2.6.1d: Stable

License
- D-ITG is now released under GPLv3 license
Improvements
- Added MinGW makefile to compile Win32 binaries on linux
Bug Fixing
- Fixed a lot of warnings shown using gcc 4.2.3 version
v2.6.1c: Stable

Bug Fixing
- Fixed problem related to ITGDec options -b, -j, -p and -d
- Addedd Sleep(1000) call into waitStopKey() functions to solve some timing problems
v2.6.1b: Stable

Improvements
- Linux: simplified method to enable DCCP, SCTP and DEBUG without modifying "Makefile"
- Windows: simplified method to enable IPv6 and DEBUG without modifying "win.mk"
- Improved installation guide (see INSTALL file)
Bug Fixing
- Fixed compilation problem related to IPv6 DS byte setting with old kernel and libc versions
v2.6.1: Stable

New Features
- Added modifications suggested by Volker Semken to let GUI work better
Bug Fixing
- Now IPv6 version works again both under Linux and Windows
- IPv6 DS byte now works correctly
- Now the Sender logfile pathname can contain spaces (only in command-line mode at the moment)
- A lot of warning fixed both under Linux and Windows
v2.6: Stable

License
- D-ITG is no more released under GPL license. The new one is reported in the source package inside LICENSE file.
Manual
- The information related to the new features have been added.
Bug Fixing
- MSG_DONTWAIT flag under Windows;
- Timeout calculation in OWDM mode;
- Send time reported by remote log;
- Inter-departure time statistical distribution accuracy.
- Random number seed option.
v2.5: D-ITG 2.5 "INFOCOM 2007 Edition"

New features
- Preliminary SCTP support.
- Preliminary DCCP support.
- Support for three different types of log-info (-pl option). This feature allows to send smaller packets.
- Currently it is possible to disable the strategy used to guarantee the mean bitrate (-j option).
- Several new decoding features have been added to the decoder ITGDec:
  - Reconstruction of receiver log files created by using the new log-info types (-r option).
  - Printing of the inter departure time of each packet (-? option).
  - Printing of the packet size of each packet (-j option).
- Improved version of the manual.
- Both an "install" and an "uninstall" options have been added to the Linux Makefile.
Bug Fixing
- A massive work of stability fixes has been done.
- Some of the bugs fixed are related to:
  - The management of the log files at receiver side;
  - Parsing of multiple flows;
  - The decoding of log files.
v2.4: D-ITG 2.4(02) Decoder

D-ITG Decoder
- Errors coming out with gcc v3.4 compiler have been fixed
v2.4: D-ITG 2.4 GUI

D-ITG Graphical User Interface:
- This GUI is written in Java and should support any plattform D-ITG is and will be ported to. It supports all traffic settings of the version 2.4.
v2.4: Stable

Bug Fixing
- Header VoIP packets
- Nagle algorithm settings
- TCP packets receiving
- More details in the documentation about the interaction between sender and receiver
- rttm option by using the signaling channel
- DS setting on Windows OSs
- log options (-L, -l, etc.): default value
- -f (TTL) option runs correctly on Linux OSs
Improvements
- Software architecture has been deeply revised and optimized
- -x (see the manual for details)
- Currently the log server supports multiflows
- New Decoder. It is able to determine a lot of output results (see the manual for details)
- IPv6 traffic generation
- Nagle option management via CLI
- Sender port setting
- Synchronization with the serial port (signal raising for each sent and received packet)
- Packet payload filled in a random fashion
- -P option (priority setting on Windows OSs)
- -X option (more log servers are available, see the manual for details)
v2.3: Stable
- A lot of bugs fixed.
v2.1: Stable
- Windows makefile and Windows binary files.
v2.0: Alpha
- Multithread implementation and Windows version.
v1.1: Alpha
- TCP communication with Log Server was fixed and the performance was improved.
v1.0: Alpha
- TCP communication with Log Server was added.
v0.9: Alpha
- The first distributed version was released. The "Log Server" was introduced.
v0.2: Alpha
- TCP traffic generation was added.
v0.1: Alpha
- The first version. Only sender and receiver were present. UDP was the supported protocol.