with ESPAsyncWebServer 3.3.0, the setAuthentication() method became
deprecated and a replacement method was provided which acts as a shim
and uses the new middleware-based approach to setup authentication. in
order to eventually apply a changed "read-only access allowed" setting,
the setAuthentication() method was called periodically. the shim
implementation each time allocates a new AuthenticationMiddleware and
adds it to the chain of middlewares, eventually exhausting the memory.
we now use the new middleware-based approach ourselves and only add the
respective AuthenticatonMiddleware instance once to the respective
websocket server instance.
a regression where enabling unauthenticated read-only access is not
applied until reboot is also fixed. all the AuthenticationMiddleware
instances were never removed from the chain of middlewares when calling
setAuthentication("", "").
To reduce the heap usage it is necessary to send the inverters one by one instead of a huge response. A simple call to `/api/livedata/status` returns just some very general information. If detailed inverter information are required the inverter serial number has to appended `?inv=<serial number>`.
The websocket also returns only one inverter at a time. It as to be assembled at client side.
Added additional field to the prometheus api which identifies a channel by it's type. That means that e.g. channel 0 exists for type AC and DC.
This commit also introduces a additional field in the statistics byte assignment table. This field identifies whether a channel is on the AC or DC side. MQTT and WebAPI is still compatible with the previous design.
