ndt7-client-go client "-server" option error

[frog...@gmail.com]

Hi,

It looks like the -server option in ndt7-client-go is not working.

I can run the test using default setting.

~/godir/src/ndt7-client-go/cmd/ndt7-client$ go run main.go
download in progress with ndt-mlab3-dfw02.mlab-oti.measurement-lab.org
Avg. speed  :   463.9 Mbit/s
download: complete
upload in progress with ndt-mlab3-dfw02.mlab-oti.measurement-lab.org
Avg. speed  :   194.7 Mbit/s
upload: complete
         Server: ndt-mlab3-dfw02.mlab-oti.measurement-lab.org
         Client: 2001:48d0:101:501:da9e:f3ff:fe86:e62d
        Latency:    46.0 ms
       Download:   463.9 Mbit/s
         Upload:   194.7 Mbit/s
 Retransmission:    0.15 %

However, I got handshake errors when I try to run NDT again using the same server.

~/godir/src/ndt7-client-go/cmd/ndt7-client$ go run main.go -server=ndt-mlab3-dfw02.mlab-oti.measurement-lab.org
download failed: websocket: bad handshake

download: complete
upload failed: websocket: bad handshake

upload: complete
exit status 2

What should I put into the server option?

Thank you for your help.

Ricky

[Panos Vouzis]

I have the same issue. How do you specify the server?

[Nathan Kinkade]

Hi Panos,

Targeting specific servers with ndt7 on the production M-Lab platform is not supported, even though the client supports specifying the server. On the M-Lab platform, ndt7 requires an access token, which can only be obtained by querying the Locate Service:

https://locate.measurementlab.net/v2/nearest/ndt/ndt7

Once you have a valid URL (with an access token) you can use the -service-url flag of ndt7-client with a URL handed out by the Locate Service.

Best,

Nathan

--
You received this message because you are subscribed to the Google Groups "discuss" group.
To unsubscribe from this group and stop receiving emails from it, send an email to discuss+u...@measurementlab.net.
To view this discussion on the web visit https://groups.google.com/a/measurementlab.net/d/msgid/discuss/cd9e6d15-7e0f-46a0-a89c-59dc3149f983n%40measurementlab.net.

[Nathan Kinkade]

A colleague suggested that I share that while targeting specific servers is not currently supported nor recommended, that it is possible to target a specific site by using the ?site=<site> query parameter to the Locate Service. For example:

https://locate.measurementlab.net/v2/nearest/ndt/ndt7?site=lga08

Nathan