Working with loopback (127.0.0.1)
Posted: Tue Nov 22, 2016 4:10 am
I am working with some open source code that is making use of the loopback interface ... IP address 127.0.0.1. I ran into a problem and created an issue here:
https://github.com/espressif/esp-idf/issues/114
To which a fellow community member came back and pointed the issue at the notion of the LWIP and Loopback enablement. This opened up a whole question area ...
Q: Is loopback processing supported with an ESP32? For example, can I make a network connection from my ESP32 to a socket endpoint that is ALSO on the same ESP32 at address 127.0.0.1?
Q: If loopback processing is supported, is it enabled by default? We seem to be finding traces to discussion on having to set flags at LWIP compile time. See: http://www.nongnu.org/lwip/2_0_0/group_ ... _loop.html
Q: ... and finally ... if loopback processing is supported but not enabled by default, do we have a recipe to actually enable it?
https://github.com/espressif/esp-idf/issues/114
To which a fellow community member came back and pointed the issue at the notion of the LWIP and Loopback enablement. This opened up a whole question area ...
Q: Is loopback processing supported with an ESP32? For example, can I make a network connection from my ESP32 to a socket endpoint that is ALSO on the same ESP32 at address 127.0.0.1?
Q: If loopback processing is supported, is it enabled by default? We seem to be finding traces to discussion on having to set flags at LWIP compile time. See: http://www.nongnu.org/lwip/2_0_0/group_ ... _loop.html
Q: ... and finally ... if loopback processing is supported but not enabled by default, do we have a recipe to actually enable it?
