Handle timeout exception in roundup-server better. A timeout in roundup-server used to generate another exception: OSError: cannot read from timed out object when it tried to reuse the socket that timed out. Now return status 408, a brief message and trigger closing of the socket. Manual testing, no CI. To test used curl -X POST with no --data defined.

#! /bin/sh

# if there are multiple trackers, d=demo t=tracker ...
# returns last one for testing that server is up. Does not test
# each tracker.
tracker=$(ps -ef | sed -ne '/roundup-server/s/^.*\s\(\w*\)=.*$/\1/p')
wget -q -O /dev/null --proxy off --no-verbose http://localhost:8080/"${tracker:-demo}"/