diff --git a/src/http/v2/ngx_http_v2.c b/src/http/v2/ngx_http_v2.c
index dd712c121..278c9abf6 100644
--- a/src/http/v2/ngx_http_v2.c
+++ b/src/http/v2/ngx_http_v2.c
@@ -3414,6 +3414,7 @@ ngx_http_v2_read_request_body(ngx_http_request_t *r,
     ngx_http_v2_stream_t      *stream;
     ngx_http_request_body_t   *rb;
     ngx_http_core_loc_conf_t  *clcf;
+    ngx_http_v2_connection_t  *h2c;
 
     stream = r->stream;
 
@@ -3498,6 +3499,15 @@ ngx_http_v2_read_request_body(ngx_http_request_t *r,
             stream->skip_data = 1;
             return NGX_HTTP_INTERNAL_SERVER_ERROR;
         }
+
+        h2c = stream->connection;
+
+        if (!h2c->blocked) {
+            if (ngx_http_v2_send_output_queue(h2c) == NGX_ERROR) {
+                stream->skip_data = 1;
+                return NGX_HTTP_INTERNAL_SERVER_ERROR;
+            }
+        }
     }
 
     ngx_add_timer(r->connection->read, clcf->client_body_timeout);