keep alive message. THis is not a sane value (1s) but is a temporary workaround
around real problem which is that in this implementation coupler's subscribe
implementation can not cope with flood of subscribed to it UDP diagrams.
Real solution to reach high avialability is to make coupler's UDP handling
use multithreading and signifficantly speed up UDP handling in Subscribe part.

See merge request !19

Initial scripts for TSN setup of k3 (master, edge server) and a20-prod/a20-prod-1 (coupler devices).

was built against) and not system wide one in /usr/local/lib which
was the case recently.

was built against) and not system wide one in /usr/local/lib which
was the case recently.

This reverts commit 324ac16d.

This reverts commit b7effa5b.

See merge request !18

Fixup: the change from numeric to uint32 seems not supported for the release of open62541 which is by default used by the OSIE coupler.

The custom opcua server bind option is added and it can be
parced with command line option -a or server_ip_address=.
If no ip address is mentioned, then server is listening on all interfaces

modified:   cli.h
modified:   keep_alive_publisher.h
modified:   keep_alive_subscriber.h
modified:   server.c

Test: Program is tested

See merge request !17

See merge request !16

Add a new CLI option to set the timeout after which without a heart beat a dependant coupler is considered DOWN.