username='user'

password='password'

msgs=""

gpspipe -w -2 -S | while read x ;

# cache AIS-messages

if [[ $x == *"AIS"* ]]; then

msgs+=$(echo "$x" | tr -d '\r\n')

msgs+=","

fi

# if more than 1 second elapsed and the cache is not empty, post the cached msgs to the server

if (( $SECONDS > 0 )) && [[ ! -z "${msgs}" ]]; then

echo "[ ${msgs%,*} ]" | gzip | curl -s -u $username:$password -X POST -H "Content-Type: application/json" -H "Content-encoding: gzip" --data-binary @- -m 1 https://ais.chaos-consulting.de/shipin/index.php &

SECONDS=0

msgs=""

fi