Fixed bug #78469

fcgi_accept_request function is supposed to call a FastCGI implementation's
on_accept hook when entering an "accepting" stage (that is right before
calling "accept"). This hook implementation (fpm_request_accepting) updates
a worker state to an "accepting" state which is effectively an "Idle" state,
and updates counters on the scoreboard of the corresponding pool (idle++,
active--).

But this is not done when listening for client connections on a named pipe on
Windows platform. In that case a combination of
ConnectNamedPipe/WaitForSingleObject is used (to be able to catch in_shutdown
as far as I understand), but it is nonetheless functionally equivalent to
"accept" call. Also by not calling on_hook neither a worker's state is updated
to "accepting" state nor scoreboard counters are updated.

NEWS

@@ -7,6 +7,10 @@ PHP                                                                        NEWS
   . Fixed bug #78412 (Generator incorrectly reports non-releasable $this as GC
     child). (Nikita)
 
+- FastCGI:
+  . Fixed bug #78469 (FastCGI on_accept hook is not called when using named
+    pipes on Windows). (Sergei Turchanov)
+
 - MySQLnd:
   . Fixed connect_attr issues and added the _server_host connection attribute.
     (Qianqian Bu)

main/fastcgi.c

@@ -1375,6 +1375,8 @@ int fcgi_accept_request(fcgi_request *req)
 				if (in_shutdown) {
 					return -1;
 				}
+
+				req->hook.on_accept();
 #ifdef _WIN32
 				if (!req->tcp) {
 					pipe = (HANDLE)_get_osfhandle(req->listen_socket);
@@ -1405,8 +1407,6 @@ int fcgi_accept_request(fcgi_request *req)
 					sa_t sa;
 					socklen_t len = sizeof(sa);
 
-					req->hook.on_accept();
-
 					FCGI_LOCK(req->listen_socket);
 					req->fd = accept(listen_socket, (struct sockaddr *)&sa, &len);
 					FCGI_UNLOCK(req->listen_socket);