Easy way to obtain your public IP for port routing
Posted: Sun May 21, 2017 10:34 pmHey Group,
So my ISP doesn't supply a fixed public IP address. It can change (especially if my DSL router is rebooted).
So I found that I can have an esp module obtain the current public IP addy and send it to me in an email message.
It would be easy to have an esp module check periodically if the Pub IP had changed (by doing a comparison current/last) and send a message to inform. That way you will always be able to get back in to your IOT/Smart devices.
example code...
cheers
dwight
PS
these url's all work...
http://myip.dnsomatic.com/
http://icanhazip.com/
this one works from a dos prompt...
nslookup myip.opendns.com. resolver1.opendns.com
So my ISP doesn't supply a fixed public IP address. It can change (especially if my DSL router is rebooted).
So I found that I can have an esp module obtain the current public IP addy and send it to me in an email message.
It would be easy to have an esp module check periodically if the Pub IP had changed (by doing a comparison current/last) and send a message to inform. That way you will always be able to get back in to your IOT/Smart devices.
example code...
Code: Select all
memclear
pubip = "empty"
button "Get IP", [GetIp]
wait
[GetIp]
pubip=wget(myip.dnsomatic.com)
print pubip
wait
cheers
dwight
PS
these url's all work...
http://myip.dnsomatic.com/
http://icanhazip.com/
this one works from a dos prompt...
nslookup myip.opendns.com. resolver1.opendns.com