cardano-cli ping: Reduce TCP timeout or add timeout option

[liv-io]

Description

cardano-cli ping takes around 1 minute and 30 seconds (apparently the default TCP timeout) until it exits when specifying a non-existent address, port or offline target.

Steps to Reproduce

1. Run cardano-cli against a non-existent address, port or offline target:

time cardano-cli ping --host 10.10.10.10 --port 1337 --count 1

2. Verify the time

real    1m31.542s
user    0m0.003s
sys     0m0.003s

Expected behavior

Ideally, cardano-cli ping would offer an option (--timeout 10) to specify the timeout or exit after a reasonable timeout (maybe 10 seconds).

Actual behavior

cardano-cli ping times out after around 1 minute 30 seconds, which is quite long for working with the tools in scripts.

Workaround

I am currently using the Linux timeout command and can live without this feature being added:

timeout 10 cardano-cli ping --host 10.10.10.10 --port 1337 --count 1

Additional Context

I am using the cardano-cli version from the compiled cardano-node tarball 8.9.2:

• cardano-node:

  $ cardano-node version
  cardano-node 8.9.2 - linux-x86_64 - ghc-8.10
  git rev 424983fa186786397f5a99539f51710abf62c37b
  

• cardano-cli:

  $ cardano-cli version 
  cardano-cli 8.20.3.0 - linux-x86_64 - ghc-8.10
  git rev 424983fa186786397f5a99539f51710abf62c37b
  

Please let me know if you need additional information or you want me to test with different cardano-cli versions. Thanks.