ESP32 Forum

Hi, I have two questions about ethernet and WiFi interfaces
first, Can I work with ethernet and WiFi interfaces at the same time?
for example:
-WiFi has connected to an access point and its IP address is "192.168.10.111"
-Also Ethernet has connected and its IP is "192.168.15.78"
-A TCP server is created in port 80 in ESP32
now, I can receive requests over port 80 by +IPD in ESP32.
my question is if I send request packets to both IP addresses at the same time and continuously (WiFi "192.168.10.111" & Ethernet "192.168.15.78"), Is the ESP32 sends two +IPD for both interfaces through UART?

if yes, Are UART interfaces for ethernet and WiFi common or different?

Thank you so much.

Hello Ethan90,

1. Yes, you can use both Ethernet netif and Wi-Fi netif to connect to the ESP32 TCP server at the same time, similar to running a TCP server on a Linux system.

2. Connections coming from different netifs (Ethernet or Wi-Fi) will have different connection IDs output by the AT command to the MCU.
For example: "0,CONNECT" and "1,CONNECT". You can use the AT+CIPSTATE? command to query specific connection information (https://docs.espressif.com/projects/esp ... md-ipstate).

3. UART does not differentiate between different netifs. No matter which TCP connection the data comes from, the data will be sent to the MCU in a format like "+IPD,<link_id>,<length>:<data>"
(refer to the +IPD documentation for more information on the format: https://docs.espressif.com/projects/esp ... x.html#id4).

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