[libmicrohttpd] MHD_suspend_connection()

[Markus Doppelbauer]

Hello,

Is it allowed/safe to suspend a connection via "MHD_suspend_connection()" inside a 
"MHD_ContentReaderCallback()" handler? 

I am asking because 
a) the docs say:
      "The only safe time to suspend a connection is from the MHD_AccessHandlerCallback."
b) the "MHD_ContentReaderCallback()" does not have a "connection" parameter.

Thanks a lot!
Markus