Sample code for request/reply design by using Spring Cloud Stream

Hello Marc,
I hope this is my last question, sorry! I did all this way it worked, when I was at home, but not behind my firewall etc. What I found out is that everything seems to be enable, but the operation status is Down. I made two screenshot. But it changed for example, if I did change the url in the rc_get to “localhost” and suddenly it was up. Is it possible that your broker tries to connect to this url and can n’t reach it, because the ports are not already open to reach it???