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RELEASE_NOTES
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== iperf 3.?.? ????-??-?? ==
* User-visible changes
* The iperf3 project has been moved to GitHub, and various URLs in
documentation files have been changed to point there.
* Setting CPU affinity now works on FreeBSD.
* iperf3 now builds on Linux systems that do not support
TCP_CONGESTION. Most notably this allows iperf3 to work on CentOS
5.
* Selection of TCP congestion now works on FreeBSD, and is now
called --congestion (the old --linux-congestion option works
but is now deprecated).
* An abort on MacOS 10.9 has been fixed (issue #135).
* Added -I flag for the server to write a PID file, mostly useful for
daemon mode (issue #120).
* A bug that could break some TCP tests on FreeBSD has been fixed.
* TCP snd_cwnd output is now printed by default on Linux (issue #99).
* SCTP support has been added (with the --sctp flag), on Linux and
FreeBSD (issue #131).
* In JSON output, the --title string no longer has a colon and two
spaces appended (issue #139).
* A buffer for holding formatted numeric values is now
properly-sized so that output is not truncated (issue #142).
* A --logfile argument can now force all output to go to a file,
rather than to a file. This is especially useful when running an
iperf3 server in daemon mode (issue #119).
* Summary structures in the JSON output are now included, even if
there is only one stream. This change makes consuming the JSON
output easier and more consistent (issue #151).
* A possible buffer overflow in iperf_error.c has been fixed (issue
#155).
* A timing issue which caused measurement intervals to be wrong
with TCP tests on lossy networks has been fixed (issue #125).
* Newer versions of autoconf / automake / libtool are now used by
default (issue #161).
* The maximum test running time is now one day, up from one hour
(issue #166).
* JSON output now indicates whether the test was run in --reverse
mode (issue #167).
* It is now possible to get (most of) the server-side output at
the client by using the --get-server-output flag (issue #160).
* Various problems with the -B option have been fixed (issue #193).
* Various compatibility fixes for Android (issue #184, issue #185),
OpenBSD (issue #196), Solaris (#177, issue #180).
* A server bug where new connections from clients could disrupt
running tests has been fixed (issue #202).
* Rates now consistently use 1000-based prefixes (K, M, G), where
sizes of objects now consistently use 1024-based prefixes (issue #173).
* UDP tests with unlimited bandwidth are now supported (issue #170).
* Developer-visible changes
* Some memory leaks have been fixed.
* A -d flag enables debugging output.
* A .gitignore file has been added.
* libtoolize is now invoked correctly from the bootstrap.sh script.
* The test unit format can now be set from the API (issue #144).
* libiperf is now built by default as both shared and static
libraries (issue #146, issue #152).
* Consumers of libiperf can now get the JSON output for a
just-completed test (issue #147).
* Detection of various optional features has been improved to check
for the presence or absence of platform functionality, not the name
of platforms.
* In the JSON output, the "connection" structures are now stored as
an array in the "start" block, instead of overwriting each other.
While technically an incompatible API change, the former behavior
generated unusable JSON.
== iperf 3.0.1 2014-01-10 ==
* Added the following new flags
-D, --daemon run server as a daemon
-L, --flowlabel set IPv6 flow label (Linux only)
-C, --linux-congestion set congestion control algorithm (Linux only)
-k, --blockcount #[KMG] number of blocks (packets) to transmit
(instead of -t or -n)
* Bug fixes
== iperf 3.0-RC5 2013-11-15 ==
* Added the following new flags
-F, --file name xmit/recv the specified file
-A, --affinity n/n,m set CPU affinity (Linux only)
-J, --json output in JSON format
-Z, --zerocopy use a 'zero copy' method of sending data
-O, --omit N omit the first n seconds
-T, --title str prefix every output line with this string
* more useful information in 'verbose' mode
* Many bug fixes
== iperf 3.0b4 2010-08-02 ==
* Added support for binding to a specific interface (-B)
* Added support for IPv6 mode (-6)
* Setting TCP window size (-w) is now supported
* Updates to iperf_error
* Added new errors
* Should generate more relavent messages
* Stream list now managed by queue.h macros
* Test structures are now kept intact after a test is run (for API users)
* Improved interval timer granularity
* Support for decimal values
* Many bug fixes
== iperf 3.0b3 2010-07-23 ==
* Better error handling
* All errors now handled with iperf_error()
* All functions that can return errors return NULL or -1 on error and set i_errno appropriately
* Iperf API intruduced
* Support for adding new protocols
* Added support for callback functions
* on_connect - executes after a connection is made to the server
* on_new_stream - executes after a new stream is created
* on_test_start - executes right before the test begins
* on_test_finish - executes after the test is finished
* Added early support for verbose mode (-V)
== iperf 3.0b2 2010-07-15 ==
* UDP mode now supported
* Support for setting bandwidth (-b)
* Parallel UDP stream support
* Reverse mode UDP support
* Support for setting TCP_NODELAY (-N), disabling Nagle's Algorithm
* Support for setting TCP MSS (-M)
* Note: This feature is still in development. It is still very buggy.
== iperf 3.0b1 2010-07-08 ==
* TCP control socket now manages messages between client and server
* Dynamic server (gets test parameters from client)
* Server can now set test options dynamically without having to restart.
* Currently supported options: -l, -t, -n, -P, -R
* Future options: -u, -b, -w, -M, -N, -I, -T, -Z, -6
* Results exchange
* Client can now see server results (and vice versa)
* Reverse mode (-R)
* Server sends, client receives