[libmicrohttpd] Difference in handling of MHD_AccessHandlerCallback between 0.4.4 and 0.4.6

[John Lee]

Hello there,
I've noticed that there is a difference between MHD_AccessHandlerCallback usage between 0.4.4 and 0.4.6. For example, sending a JSON object post payload of about ~450 bytes, *not* multi-part, *no* chunking.

1) 0.4.4
MHD_AccessHandlerCallback Call #1: 
upload_data points to the entire allocated POST payload
*upload_data_size = 453
Create post processor and initialise state for the connection including the size of payload

MHD_AccessHandlerCallback Call #2:
upload_data points to the entire allocated POST payload
*upload_data_size = 453
Call MHD_post_process to process POST data.

MHD_AccessHandlerCallback Call #3:
upload_data points to the entire allocated POST payload

*upload_data_size = 0 (i.e. finished processing the POST payload)
The MHD_PostDataIterator function was never called, presumably because MHD could handle in one chunk.
I pass the upload_data and stored size onto other network applications before replying to client.
The upload data memory is allocated for the entire duration of the HTTP request / response transaction.

2) 0.4.6
MHD_AccessHandlerCallback Call #1: 
upload_data points to the entire allocated POST payload
*upload_data_size = 453
Create post processor and initialise state for the connection including the size of payload

...

MHD_AccessHandlerCallback Call #3:

upload_data points to NULL


*upload_data_size = 0 (i.e. finished processing the POST payload)

The upload data memory is no longer allocated? Is it up to the user to allocate memory for the POST payload?

BRs //John.