How do I make different kinds of web - request?

Pablo Oyarzo · Post by **Pablo Oyarzo** » Wed Mar 22, 2017 3:46 pm

On the documentation we have a goof example of an HTTP GET request. What If I have need to de an ECHOREQUEST?

deshipu · Post by **deshipu** » Wed Mar 22, 2017 5:07 pm

Pray tell what the heck is a ECHOREQUEST? There is no such thing in the HTTP protocol RFCs.

Pablo Oyarzo · Post by **Pablo Oyarzo** » Wed Mar 22, 2017 6:21 pm

deshipu · Post by **deshipu** » Wed Mar 22, 2017 7:31 pm

That is ICMP, not HTTP. A completely different thing and three network levels away from HTTP.
As far as I can tell, ESP8266 doesn't support ICMP.

Pablo Oyarzo · Post by **Pablo Oyarzo** » Thu Mar 23, 2017 3:11 pm

When it has the AT firmware it really does have a "ping command". My question would be, how is it possible then?

deshipu · Post by **deshipu** » Thu Mar 23, 2017 6:50 pm

Perhaps you can examine the firmware's source and see for yourself. My guess would be that they are doing a so-called "tcp ping".

mcauser · Post by **mcauser** » Thu Mar 23, 2017 10:26 pm

There are some Arduino Ping libraries for ESP8266, which seem to use ICMP echo requests.
https://github.com/akaJes/AsyncPing
https://github.com/dancol90/ESP8266Ping

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