#!/usr/bin/env bash
server="192.168.0.254 -i ~/.ssh/rick.epha.se.ed25519"
user=ephase

source message.sh

ssh_sock="/tmp/$(mktemp -u XXXXXXXXXX)"

connect() {
    msg "Create SSH main connection wih socket ${ssh_sock}"
    ssh -N -o ControlMaster=yes -o ControlPath="$ssh_sock" -f ${user}@${server} || {
        # reuse
        error "Can't connect to $server";
        exit 210;
    }
}

launch_command() {
    local command
    command="$1"
    ssh -q -t -S "$ssh_sock" ${user}@${server} "$command"
}

cleanup() {
    # close the master control connexion before
    msg "Close SSH main connection"
    ssh -q -o ControlPath="$ssh_sock" -O exit ${server} || {
        error "Can't close SSH master connection, $ssh_sock remain";
        exit 21;
    }
    exit
}
trap "cleanup 255" INT ERR
trap "cleanup" EXIT
connect
for (( i=10; i<=20; i++ ))
do
    launch_command "echo 'Message N°$i from ${server}'"
    sleep 1
done