[core] be more precise checking streaming flags

src/connections.c

@@ -1320,7 +1320,10 @@ connection_state_machine_h2 (request_st * const h2r, connection * const con)
             connection_state_machine_loop(r, con);
 
             if (r->resp_header_len && !chunkqueue_is_empty(&r->write_queue)
-                && (r->resp_body_finished || r->conf.stream_response_body)) {
+                && (r->resp_body_finished
+                    || (r->conf.stream_response_body
+                        & (FDEVENT_STREAM_RESPONSE
+                          |FDEVENT_STREAM_RESPONSE_BUFMIN)))) {
 
                 chunkqueue * const cq = &r->write_queue;
                 off_t avail = chunkqueue_length(cq);
@@ -1793,8 +1796,10 @@ connection_handle_read_post_chunked (request_st * const r, chunkqueue * const cq
                         }
                         hsz = p + 4 - (c->mem->ptr+c->offset);
                         /* trailers currently ignored, but could be processed
-                         * here if 0 == r->conf.stream_request_body, taking
-                         * care to reject any fields forbidden in trailers,
+                         * here if 0 == (r->conf.stream_request_body &
+                         *               & (FDEVENT_STREAM_REQUEST
+                         *                 |FDEVENT_STREAM_REQUEST_BUFMIN))
+                         * taking care to reject fields forbidden in trailers,
                          * making trailers available to CGI and other backends*/
                     }
                     chunkqueue_mark_written(cq, (size_t)hsz);

src/mod_deflate.c

@@ -1558,7 +1558,9 @@ REQUEST_FUNC(mod_deflate_handle_response_start) {
 
 	/* enable compression */
 	p->conf.sync_flush =
-	  (r->conf.stream_response_body && 0 == p->conf.output_buffer_size);
+	  ((r->conf.stream_response_body
+	    & (FDEVENT_STREAM_RESPONSE | FDEVENT_STREAM_RESPONSE_BUFMIN))
+	   && 0 == p->conf.output_buffer_size);
 	hctx = handler_ctx_init();
 	hctx->plugin_data = p;
 	hctx->compression_type = compression_type;

src/mod_webdav.c

@@ -5732,7 +5732,8 @@ PHYSICALPATH_FUNC(mod_webdav_physical_handler)
     }
 
     r->handler_module = ((plugin_data *)p_d)->self;
-    r->conf.stream_request_body = 0;
+    r->conf.stream_request_body &=
+      ~(FDEVENT_STREAM_REQUEST | FDEVENT_STREAM_REQUEST_BUFMIN);
     r->plugin_ctx[((plugin_data *)p_d)->id] = &pconf;
     const handler_t rc =
       mod_webdav_subrequest_handler(r, p_d); /*p->handle_subrequest()*/

src/response.c

@@ -1022,7 +1022,10 @@ http_response_handler (request_st * const r)
     switch (rc) {
       case HANDLER_WAIT_FOR_EVENT:
         if (!r->resp_body_finished
-            && (!r->resp_body_started || 0 == r->conf.stream_response_body))
+            && (!r->resp_body_started
+                || 0 == (r->conf.stream_response_body
+                         & (FDEVENT_STREAM_RESPONSE
+                           |FDEVENT_STREAM_RESPONSE_BUFMIN))))
             return HANDLER_WAIT_FOR_EVENT; /* come back here */
         /* response headers received from backend; start response */
         __attribute_fallthrough__