trim excess whitespace

fix spelling

Add tcp_info.snd_wnd to JSON output.

tcp_info.snd_wnd is available on FreeBSD and NetBSD since TCP_INFO was
added. It was added to Linux 5.4 in late 2019 and becomes available
in Ubuntu 20.04 and D

Add tcp_info.snd_wnd to JSON output.

tcp_info.snd_wnd is available on FreeBSD and NetBSD since TCP_INFO was
added. It was added to Linux 5.4 in late 2019 and becomes available
in Ubuntu 20.04 and Debian 11.

Tested on:
* Debian 11 running on x86-64 with this field.
* Debian 10 armv7 running on Raspberry Pi 2 without this field.
* NetBSD 9.2 armv7 running on Raspberry Pi 3 with this field.
* FreeBSD 13 aarch64 running on Raspberry Pi 4 with this field.

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ensure build_tcpinfo_message TCP_INFO check consistent with iperf_interval_results

Part of #935.

Change-Id: Id702dee9d894d91420719928ae2de6b44b72f579
Signed-off-by: Xiang Xiao <[email protected]

ensure build_tcpinfo_message TCP_INFO check consistent with iperf_interval_results

Part of #935.

Change-Id: Id702dee9d894d91420719928ae2de6b44b72f579
Signed-off-by: Xiang Xiao <[email protected]>
(cherry picked from commit 9dab732f5ec41be873cae3351b3d57fbfad36c93)
Signed-off-by: Bruce A. Mah <[email protected]>

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Grab TCP PMTU during tests (on Linux only). Towards #569. (#578)

Fix a problem when getting snd_cwnd on FreeBSD.

On FreeBSD, unlike Linux (and NetBSD?) snd_cwnd is expressed in
octets instead of segments. Hilarity ensued when we erroneously
multiplied by snd_mss

Fix a problem when getting snd_cwnd on FreeBSD.

On FreeBSD, unlike Linux (and NetBSD?) snd_cwnd is expressed in
octets instead of segments. Hilarity ensued when we erroneously
multiplied by snd_mss and integer overflows occureed.

Possible fix for #465, #475, #338. Testing from FreeBSD users
appreciated.

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add tcp rttvar to stream info (#534)

Fixes #525.

Fix header includes and build failures on musl (#518)

* Include stdint.h in files where its types are used

Signed-off-by: Moritz Kick <[email protected]>

* Fix type of len para

Fix header includes and build failures on musl (#518)

* Include stdint.h in files where its types are used

Signed-off-by: Moritz Kick <[email protected]>

* Fix type of len parameter passed to getsockopt

getsockopt expects socklen_t instead of int as its fifth argument

Signed-off-by: Moritz Kick <[email protected]>

* Remove unnecassary includes of netinet/tcp.h

also cleanup the second include of stdint.h in main.c

This commit fixes #331 and is a replacement for #344.

Signed-off-by: Moritz Kick <[email protected]>

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Remove an extra #ifdef left behind by #248.

Add support for NetBSD systems which have TCP_INFO implemented.

Retrieve RTT information on platforms supporting it.

This value is available on the sender side, expressed in
microseconds. It's available in the JSON output.

In the JSON output we also output the

Retrieve RTT information on platforms supporting it.

This value is available on the sender side, expressed in
microseconds. It's available in the JSON output.

In the JSON output we also output the maximum observed RTT
per-stream. Note that since the observation interval is many times
the RTT, it's not clear how good this value would be at capturing the
largest computed RTT value over the lifetime of each stream.

While here, also determine the maximum observed snd_cwnd value over
the lifetime of each stream.

This all works pretty well on Linux, but on FreeBSD (which should
theoretically be supported) we don't do a good job of supporting the
tcp_info structure. We need to make this code a lot more portable,
rather than just assuming the world of platforms is "Linux"
vs. "everything else". Fixing this requires some rearchitecting of
the way that we retrieve, compute, and print statistics.

Part of a fix for #215.

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Update license and copyright text to conform to LBNL standards.

Note that the license remains a 3-clause BSD license; the only
license changes were to add the name of the program and to add
some pun

Update license and copyright text to conform to LBNL standards.

Note that the license remains a 3-clause BSD license; the only
license changes were to add the name of the program and to add
some punctuation.

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Rename locale.{c,h} to iperf_locale.{c,h} to avoid filename collision
with system header <locale.h>.

This apparently fixes problems on an ARM build, but this was generally
broken anyway. It's sligh

Rename locale.{c,h} to iperf_locale.{c,h} to avoid filename collision
with system header <locale.h>.

This apparently fixes problems on an ARM build, but this was generally
broken anyway. It's slightly amazing this didn't cause problems before;
perhaps we never used <locale.h> before?

Addresses #203.

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Remove unnecessary inclusion of <sys/queue.h>, as well as some ifdef-ed
out code that depended on it.

Fixes #180.

Output TCP snd_cwnd (on platforms supporting it) in normal output.

We were computing and printing this in JSON output mode anyway; this
change just exposes this quantity in a human-friendly manner (

Output TCP snd_cwnd (on platforms supporting it) in normal output.

We were computing and printing this in JSON output mode anyway; this
change just exposes this quantity in a human-friendly manner (better
than the first attempt at this) when doing normal output.

Resolves Issue 99 (Additional TCP_INFO items).

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Follow-on to 4cfce137e89c based on some feedback and experience.

Rip out the tcpi_sacked support...it doesn't really keep a cumulative
total of SACKs received like we thought it did (it's instantane

Follow-on to 4cfce137e89c based on some feedback and experience.

Rip out the tcpi_sacked support...it doesn't really keep a cumulative
total of SACKs received like we thought it did (it's instantaneous
state).

Convert tcpi_snd_cwnd (originally expressed in segments) to octets before
printing.

Re-work internal APIs for functions to get stuff out of tcp_info...rather
than doing a getsockopt() call per value, grab the values out of a
saved copy of the tcp_info structure (which we were getting in almost
every case anyway).

Issue: 99 (Additional TCP_INFO items)

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Remove some (commented out) debugging code accidentally left in.

Keep track of SACKs and snd_cwnd from tcp_info (Linux only for now).

Committing this WIP so we can get some experimentation done with it.

Fix retransmit accounting so it works right with the --omit flag.

Better handling of non-exit errors in JSON.
Also converted one more error to the unified call.

Add -J flag to produce JSON output instead.

Allow API client to provide an fd for the client-side control socket.

Better detection of when linux has retransmit info in tcp_info.

Disable retransmit reporting for FreeBSD, it's not actually
implemented in the OS yet.

Fix retransmit reporting for Linux.