ESP8266 Community Forum

- Wed Jun 08, 2016 10:34 am #48783 Currently my ESP connects to my raspberry pi over MQTT using the PubSubClient library like so:

Code: Select allclient.setServer(brokerIP, 1883);

brokerIP is the IP address of my raspberry pi, and that's worked well. The issue is that my Pi obtains the IP address via DHCP and so for the sake of robustness, I would much more prefer to connect using it's mDNS name "raspberrypi.local". When I replace the IP with the name, it compiles and just fine and connects to my AP, however it cannot connect to the MQTT broker.

If I copy and paste the name into Putty and try to SSH, I'm asked to log in like normal, so I know the name is correct. Does anyone know what I'm doing wrong that I can SSH into my Pi using the mDNS name, but not connect using my ESP?

- Wed Jun 08, 2016 11:00 am #48784 The ESP has a mDNS library to publish itself, but, from what I know, there is NO library yet to have mDNS resolver, like avahi-browser, so the DNS provided by your router or your ISP isn't able to resolve it.