CLI hangs on "Selecting the fastest server based on ping" about speedtest-cli

[maddie]

Hmm, maybe I can add an option to disable ICMP ping entirely to see it helps.

[maddie]

There shouldn't be any different for the binary to be built anywhere.

• Are you using the official server list, or you're using your own?
• Have you tried to wait it out to see if it actually finishes?

The CLI pings all the servers in the list to get the fastest one, so it might take some time to finish. The server list isn't too big (at least for now), so I haven't done anything special to filter out only the fastest ones to try (i.e. using distance).

[maddie]

@dbrennand Can you try compile from source and use option --no-icmp and try again?

Thanks.

[dbrennand]

Hi @maddie

Thanks for the response 👍🏻

• I’m using the official server list.
• I will wait it out for around 10 minutes? Surely it shouldn’t take much longer than that?

I will report back 🙂

Many Thanks.

[maddie]

From my end (in China, which should be pretty slow accessing the official servers), pinging the servers takes a couple of minutes. It shouldn't take very long, since it tries to ping each server once (ICMP) or 3 times (via HTTP), 10 servers at a time.

If it really takes a very long time, it's most likely a bug 😅

[dbrennand]

Hi again @maddie

Looking at past issues, this looks almost identical to #12

When running --verbose the following errors are shown:

/ # ./librespeed --telemetry-level disabled --verbose
Retrieving server list from https://librespeed.org/backend-servers/servers.php
Selecting the fastest server based on ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Server New York, United States (1) (BuyVM) (ny1.backend.librespeed.nixnet.services) doesn't seem to be up, skipping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping

After this last output, the CLI hangs. I waited 10 minutes before giving up 😞

[dbrennand]

So after looking at this issue comment: go-ping/ping#4 (comment)

I wanted to see if I could get it the CLI working without specifying the server ID.

So I did the following, running my container with --privileged :

/ # sysctl -w net.ipv4.ping_group_range="0 2147483647"
net.ipv4.ping_group_range = 0 2147483647
/ # ./librespeed --verbose
Retrieving server list from https://librespeed.org/backend-servers/servers.php
Selecting the fastest server based on ping
Server New York, United States (1) (BuyVM) (ny1.backend.librespeed.nixnet.services) doesn't seem to be up, skipping
No ICMP pings returned for server Indianapolis, United States  (speedtest.chet.space), trying TCP ping

It removed the socket permissions errors. But still hanged for 10 minutes.

Did the same with debug (below) and still hanged for 10 minutes.

/ # ./librespeed --debug
Retrieving server list from https://librespeed.org/backend-servers/servers.php
Selecting the fastest server based on ping
Server New York, United States (1) (BuyVM) (ny1.backend.librespeed.nixnet.services) doesn't seem to be up, skipping
No ICMP pings returned for server Helsinki, Finland (3) (Hetzner) (fi.openspeed.org), trying TCP ping
No ICMP pings returned for server Atlanta, United States (Clouvider) (atl.speedtest.clouvider.net), trying TCP ping
No ICMP pings returned for server Indianapolis, United States  (speedtest.chet.space), trying TCP ping

[dbrennand]

Hi @maddie

Just compiled the new version and still hangs. See output below:

/librespeed --debug --no-icmp
Retrieving server list from https://librespeed.org/backend-servers/servers.php
Selecting the fastest server based on ping
Skipping ICMP for server Amsterdam, Netherlands (Clouvider), will use HTTP ping
Skipping ICMP for server Frankfurt, Germany (DigitalOcean), will use HTTP ping
Skipping ICMP for server Frankfurt, Germany (Clouvider), will use HTTP ping
Skipping ICMP for server Helsinki, Finland (1) (Hetzner), will use HTTP ping
Skipping ICMP for server Helsinki, Finland (3) (Hetzner), will use HTTP ping
Skipping ICMP for server Helsinki, Finland (2) (Hetzner), will use HTTP ping
Skipping ICMP for server Atlanta, United States (Clouvider), will use HTTP ping
Skipping ICMP for server Helsinki, Finland (5) (Hetzner), will use HTTP ping
Skipping ICMP for server Bari, Italy (GARR), will use HTTP ping
Skipping ICMP for server Bologna, Italy (GARR), will use HTTP ping
Skipping ICMP for server Chicago, United States (HostHatch), will use HTTP ping
Skipping ICMP for server London, England (Clouvider), will use HTTP ping
Skipping ICMP for server Indianapolis, United States , will use HTTP ping
Skipping ICMP for server New York, United States (2) (Clouvider), will use HTTP ping
Skipping ICMP for server Nottingham, England (LayerIP), will use HTTP ping
Skipping ICMP for server Los Angeles, United States (1) (Clouvider), will use HTTP ping
Skipping ICMP for server New York, United States (3) (HostHatch), will use HTTP ping
Server New York, United States (1) (BuyVM) (ny1.backend.librespeed.nixnet.services) doesn't seem to be up, skipping
Skipping ICMP for server Las Vegas, United States (BuyVM), will use HTTP ping
Skipping ICMP for server Los Angeles, United States (2) (HostHatch), will use HTTP ping
Skipping ICMP for server Nuremberg, Germany (1) (Hetzner), will use HTTP ping

It's hard to tell what it is actually stuck on even with debug.

Thanks for your help on this 😃

[Perflyst]

I can reproduce this bug only if the sysctl configuration mentioned in https://github.com/go-ping/ping#linux is not applied.
The ping test now stucks on a TCP ping
No ICMP pings returned for server Indianapolis, United States (speedtest.chet.space), trying TCP ping

Running with --no-icmp stucks at the same output as mentioned above from dbrennand

[maddie]

@dbrennand Can you try v1.0.9? This issue should be fixed by commit 08d21d6.

[dbrennand]

Hi @maddie

I've just build librespeed-cli in a Golang docker container at version v1.0.9 and it no longer hangs. However, when running with --verbose I do see a lot of:

Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied
Will try TCP ping
Failed to ping target host: socket: permission denied

[dbrennand]

Hi again @maddie

I've been able to resolve the errors:

Failed to ping target host: socket: permission denied

By running the container with --sysctl net.ipv4.ping_group_range="0 2147483647"

E.g: docker run --rm --sysctl net.ipv4.ping_group_range="0 2147483647" librespeed-cli:latest

[dbrennand]

My dockerfile is here: https://github.com/dbrennand/speedtest-cli/blob/feat/dockerfile/dockerfile

[dbrennand]

As it's no longer just hanging, I think this can be marked as resolved? 😄