Thankyou. It's early days yet, but iperf seems to do most of what I need, and has very easily used docs too.

It took under 4 minutes to down load and run my first test, and it does most of what I hoped for--and probably more. 

C:\downloaded\iperf>iperf -c localhost -p 12345 -P 10
------------------------------------------------------------
Client connecting to localhost, TCP port 12345
TCP window size: 8.00 KByte (default)
------------------------------------------------------------
[1924] local 127.0.0.1 port 4286 connected with 127.0.0.1 port 12345
[1912] local 127.0.0.1 port 4287 connected with 127.0.0.1 port 12345
[1896] local 127.0.0.1 port 4288 connected with 127.0.0.1 port 12345
[1880] local 127.0.0.1 port 4289 connected with 127.0.0.1 port 12345
[1864] local 127.0.0.1 port 4290 connected with 127.0.0.1 port 12345
[1848] local 127.0.0.1 port 4291 connected with 127.0.0.1 port 12345
[1832] local 127.0.0.1 port 4292 connected with 127.0.0.1 port 12345
[1816] local 127.0.0.1 port 4293 connected with 127.0.0.1 port 12345
[1800] local 127.0.0.1 port 4294 connected with 127.0.0.1 port 12345
[1784] local 127.0.0.1 port 4295 connected with 127.0.0.1 port 12345
server sent unexpected data failed
[ ID] Interval       Transfer     Bandwidth
[1848]  0.0-31.0 sec   424 KBytes   112 Kbits/sec
server sent unexpected data failed
[1784]  0.0-32.0 sec   424 KBytes   108 Kbits/sec
server sent unexpected data failed
[1832]  0.0-32.4 sec   424 KBytes   107 Kbits/sec
server sent unexpected data failed
[1816]  0.0-32.5 sec   424 KBytes   107 Kbits/sec
server sent unexpected data failed
[1880]  0.0-60.0 sec  1.27 MBytes   178 Kbits/sec
server sent unexpected data failed
[1912]  0.0-74.4 sec  1.86 MBytes   210 Kbits/sec
server sent unexpected data failed
[1896]  0.0-76.2 sec  2.08 MBytes   229 Kbits/sec
read on server close failed: Connection reset by peer
[1864]  0.0-130.3 sec  9.96 MBytes   641 Kbits/sec
read on server close failed: Connection reset by peer
[1800]  0.0-130.5 sec  9.93 MBytes   638 Kbits/sec
read on server close failed: Connection reset by peer
[1924]  0.0-130.8 sec  6.04 MBytes   387 Kbits/sec
[SUM]  0.0-130.8 sec  32.8 MBytes  2.10 Mbits/sec

[download]

Unless it suddenly stops working, I doubt I shall need to look further. I'd already been through half a dozen "tcp traffic generators" (TrafficEmulator, Blast2.0, FSMax2.0 etc.) but they are very limited in their application. Searching turns up many, many hits, but like man's multi-track mind, some are dead ends, and many of the others lead to the same places :)

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
The "good enough" maybe good enough for the now, and perfection maybe unobtainable, but that should not preclude us from striving for perfection, when time, circumstance or desire allow.

In reply to Re^2: tcp stress test tools (Win32) by BrowserUk
in thread tcp stress test tools (Win32) by BrowserUk

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