create socket shell in ubuntu to feed a cakephp shell

gistfile1.txt

in /etc/systemd/system/cakesocket.socket

[Unit]
Description=Cakesocket example

[Socket]
ListenStream=8088
Accept=yes

[Install]
WantedBy=sockets.target

in /etc/systemd/system/cakesocket@.service

[Unit]
Description=Cakesocket service example

[Service]
ExecStart=-/usr/bin/php /tmp/app/bin/cake.php listener
StandardInput=socket

then bake a new app under /tmp/app
bin/cake bake shell listener
vi /tmp/app/src/Shell/ListenerShell.php
modify main method

public function main($data = null)
{
    $input = $this->in('?');
    echo $input;
}


then do 

sudo systemctl daemon-reload && sudo systemctl enable cakesocket.socket && sudo systemctl start cakesocket.socket && sudo systemctl status cakesocket.socket

check status is OK