Where is the http connection shut down?

I'm trying to add my new function, register_offline_function, and have it pretty much finished, but need a few pointers. The php_request_function in main/main.c is where I'm working currently. I've set up the function very similarly to the current register_shutdown_function mechanism, and I've changed the php_request_shutdown function to: void php_request_shutdown(void *dummy) { TSRMLS_FETCH(); zend_try { php_end_ob_buffers((zend_bool)(SG(request_info).headers_only?0:1 ) TSRMLS_CC); } zend_end_try(); zend_try { sapi_send_headers(TSRMLS_C); } zend_end_try(); if (PG(modules_activated)) zend_try { php_call_shutdown_functions(); } zend_end_try(); if (PG(modules_activated)) { zend_deactivate_modules(TSRMLS_C); } /* Need to call something to close the http connection. */ if (PG(modules_activated)) zend_try { fprintf(stderr, "Calling Offline Functions.\n"); php_call_offline_functions(); } zend_end_try(); zend_try { int i; for (i=0; i<NUM_TRACK_VARS; i++) { if (PG(http_globals)[i]) { zval_ptr_dtor(&PG(http_globals)[i]); } } } zend_end_try(); zend_deactivate(TSRMLS_C); zend_try { sapi_deactivate(TSRMLS_C); } zend_end_try(); zend_try { shutdown_memory_manager(CG(unclean_shutdown), 0 TSRMLS_CC); } zend_end_try(); zend_try { zend_unset_timeout(TSRMLS_C); } zend_end_try(); } I've tried moving the php_call_offline_functions() further down the execution chain, but I can't put it after the zval_ptr_dtor loop, or move the zend_deactivate() call up to be before it because these calls toast the hashtable that stores the functions. What I'd really like to do is extract the call that shuts down the http connection from the shutdown procedure and move it into main.c if possible. Problem is that I can't figure out where that happens. Is there a better way to do this? Joseph