- Tue Mar 12, 2019 12:44 am
#81058
Is there a service that you can send data to the esp8266 over the internet without port forwarding and without constantly polling some server?
Thanks
Thanks
Moderator: igrr
- Tue Mar 12, 2019 1:39 am
#81059
yes, by connecting to an external server. You don't have to actively poll it, you just keep the port open and the server will contact you -> MQTT etc
- Tue Mar 12, 2019 6:50 am
#81068
With MQTT do have to be always checking if the connection is still opened? And how many bytes of data is sent to check if it's opened?
I want an idea of the data usage just to keep it opened.
Thanks
schufti wrote:yes, by connecting to an external server. You don't have to actively poll it, you just keep the port open and the server will contact you -> MQTT etc
With MQTT do have to be always checking if the connection is still opened? And how many bytes of data is sent to check if it's opened?
I want an idea of the data usage just to keep it opened.
Thanks
- Tue Mar 12, 2019 8:08 am
#81069
Why you don't search for the answer by yourself? BTW even TCP connection has keepalive mechanism, but you have to search if it is available in Arduino Core implementation...
