Android Question Using WiFi AND Ethernet wire with MQTT ??

[almontgreen]

With my Tronsmart Drago box I can connect to a wired network and a WiFi network at the same time. Using MQTT the server (broker) designation is 127.0.0.1 and seems to work sending and receiving signals from WiFi AND through the Ethernet wire from different sources (a tablet WiFi and a cable networked Tronsmart box).

For the clients I specify the ip from the Ethernet OR the ip from the WiFi depending on which one I use.

• -> Are there any issues doing this?
• -> What about the off chance that two devices could have the same ip, one on the WiFi and one on the Ethernet? Would that matter?

Both networks are local closed with no internet access (10.10.10.#). I need the wired network for speed and the WiFi for the tablet connection.

Oops... I just discovered the tablet doesn't work when both WiFi and Ethernet are active. Is there a work around? Does the 127.0.0.1 default to Ethernet connections when available or something?

 

[Erel]

It will be problematic. The local connection will work but the other clients might not. I don't think that the wired connection will be faster than the wifi connection. Especially if you are using it with MQTT.

 

[almontgreen]

In actual testing, the wired connection is faster because wifi slows down with traffic and interference. In testing, even with no traffic I'm seeing up to a 20ms increase in speed with a wired connection compared with wifi. Doesn't seem like much, but for my application it is very important.

Erel - your java object solution to getting ip addresses is fantastic! Just what I needed.
Thanks so much Erel! Your advice is always brilliant. B4X makes the impossible possible and is changing the world.