How to run dbus-launch correctly?

Question

linux

There are 2 nodejs applications available. One is a dbus service, the other is a client.
I run them from the init script. Before starting, I start dbus:

if [ -z "$DBUS_SESSION_BUS_ADDRESS" ] && type dbus-launch >/dev/null; then
    eval $(dbus-launch --sh-syntax --exit-with-session)
  fi

Accordingly, a separate daemon is launched for each application and they do not see each other.
How to run one daemon for all?