User post handler not being called

[sramrajkar]

Can you please take a look at the post handling for this lib. I see the following line always return.

microhttpd/post.c

Line 52 in b981bf4

if(offset == NULL)

I tried sending /r/n as delimiters as well but eventually, it fails at this line and never transitioned to state_HandlePostHeaderComplete.
Another observation after adding /r/n as delimiters was that this function runs a few times but eventually returns from this line with client->rx_size being zero.
The platform used is ESP32S3 and IDF version v5.1 and v5.2. The library is added as a managed component from within vscode.
Post was tested using curl and python on Windows and monitored using Wireshark. Things look ok there.