54b1969c4b correctly switched from nc to socat, but did not account for it
not being as widely available. Adjust tests that depend on it with the
correct message.
There are also a number of comments pertaining to nc - they were not
adjusted.
We hit this once every few Jenkins runs. This:
1. Ensures netcat has started before we try to use it.
2. Waits for it to actually write the request before trying to read it.
License: MIT
Signed-off-by: Steven Allen <steven@stebalien.com>
