On Sat, Aug 07, 2021 at 06:33:49PM +0200, Dirk-Willem van Gulik wrote: ... > What I am seeing is a first brigade with the POST content; with a > terminating EOF. The bbout data makes it to the CGI script or > (reverse) proxy. > > But I am then getting a second _input_filter call with a second > brigade of just an EOS packet. > > What causes that ? Or am I not running through the brigade properly ?
You're not doing anything wrong, it seems to be a "feature" of the way input filtering is implemented and should probably be better documented. I wrote this in mod_ssl: /* Surprisingly (and perhaps, wrongly), the request body can be * pulled from the input filter stack more than once; a * handler may read it, and ap_discard_request_body() will * attempt to do so again after *every* request. So input * filters must be prepared to give up an EOS if invoked after * initially reading the request. The HTTP_IN filter does this * with its ->eos_sent flag. */ https://svn.apache.org/viewvc/httpd/httpd/trunk/modules/ssl/ssl_engine_io.c?view=markup#l2205 Regards, Joe