my autossh

myAutossh.sh

#!/usr/bin/env bash

PORT=$1
AUTOSSH_CMD="ssh -Nf -D$PORT [email protected]"

# SSH clean up function
function stopNfSSHs() {
    pids=( $(ps -ef | grep '[s]sh -Nf' | awk '{print $2}') )
    if [ "${#pids[@]}" -gt 0 ]; then
        echo "Tunnel stop ${pids[@]}"
        kill -9 "${pids[@]}"
    fi
}

# Signal handler
trap 'stopNfSSHs && exit 0' 2

# Clean Up SSH tunnels
stopNfSSHs

# main logic
$AUTOSSH_CMD
while true
do
    curl ifconfig.me --connect-timeout 1 --proxy socks4://localhost:$PORT 1>/dev/null 2>&1
    res=$?
    if [ $res -ne 0 ]
    then
        echo "[$(date)] Connectivity test failed, clean up connection"
        stopNfSSHs
        echo "[$(date)] Reconnecting..."
        $AUTOSSH_CMD
        echo "[$(date)] Reconnect complete"
    else
        echo "[$(date)] Connected!"
    fi

    sleep 1
done