Addon develop can not the http POST body

I’m developing an addon, which use the nginx and uwsgi as the web backend.
The GET working fine, but the POST recvieve by uwsgi without http body.
Is the HA modify the http package before it transfer to addon container? Can i manage this change?

POST to your addon? No chance HA could interfere between your nginx and uwsgi…

I want send POST to addon in HA web UI, is there limition to do this? In the addon is the nginx and uwsgi proccess the POST packet.

update.
I find the post request body that nginx access_log output have the Transfer-Encoding:chunked in the HA. But in Ubuntu, there is no this request header.
Is this the reason?

HA config ingress_stream change to false can fix this.
I guess the ingress_stream control the HA’s nginx, when ingress_stream is true, HA’ nginx will send chunked body to addon.