Broken pipe error selenium webdriver, when there is a gap between commands?

Question

Ubuntu 18.x + selenium webdriver(Firefox)

Facing a weird problem, the following block works if I run all of it together

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Answer 1

This is a known bug of the latest build v0.21.0 of geckodriver matched with the latest version of selenium v3.11

To work around this bug either: a) downgrade geckodriver to v0.20.1 or earlier b) wait for the bugfix/mitigations be rolled out in the upcoming versions of selenium and/or geckodriver

This bug originates from newly added support in v 0.21 of Keep-Alive feature. However, the default timeout from geckodriver in 0.21 is set to 5s, which is exceptionally short.

This bug is tracked here for geckodriver and here for selenium.