No Async Websocket server for ESP32

[williamesp2015]

Arduino websocket can configure at Websockets.h #define WEBSOCKETS_NETWORK_TYPE = NETWORK_ESP8266_ASYNC
However ESPAsyncTCP support only ESP8266 not ESP32. When I have long duration function like recording fast sensors into SD card (using SdFat), websocket server event is not responsive to use commands for the Stop recording.
Any advice would be appreciated.

[Links2004]

there is a Async variant for the ESP32,
https://github.com/me-no-dev/AsyncTCP

but i has a other API then the ESP8266 variant.
with some work you may can use it.

[williamesp2015]

Thanks for the information but if you have a flag or simple function to call for the Websocket Server to just check in a function to know if client sent a message it would help. currently I call webSocket.loop() in my function but message in the webSocketEvent accumulated until GPIO key pressed and I exit the function and come back to the loop(). I want to stop my function by client.

[Links2004]

async for ESP32 is not implemented in arduinoWebSockets, since I dont have a ESP32 here there is less I can do.

[vyruz1986]

If you PM me your address I'll gladly send you an ESP32 if that would motivate you to implement this :)

I'm not looking for the WebSocket server (I'm using @me-no-dev EspAsyncWebServer for websocket server purposes, which is already async), I'm looking for an async client instead. I've attempted to implement ESP32 async support using the AsyncTCP library, but I got stuck pretty quickly :(

It seems ESPAsyncTCP had 3 classes you used:

• AsyncClient class
• AsyncServer class
• AsyncTCPbuffer class

While AsyncTCP offers those first 2 classes with compatible API (at first glance at least, maybe minor fixes needed), it does not offer a counterpart for the AsyncTCPbuffer class. Maybe @me-no-dev can comment on what should be used instead of this buffer?
For the WebSocketsClient class the AsyncTCPbuffer class is just used at 2 locations, here and here.

Unfortunately I lack the skills in digging into this further, if anyone has tips that might get me on track again, feel free to comment.