diff --git a/copyparty/__main__.py b/copyparty/__main__.py
index 49161762..8fbaf4bf 100644
--- a/copyparty/__main__.py
+++ b/copyparty/__main__.py
@@ -383,6 +383,7 @@ def run_argparse(argv, formatter):
     ap2.add_argument("--rproxy", metavar="DEPTH", type=int, default=1, help="which ip to keep; 0 = tcp, 1 = origin (first x-fwd), 2 = cloudflare, 3 = nginx, -1 = closest proxy")
     ap2.add_argument("--s-wr-sz", metavar="B", type=int, default=256*1024, help="socket write size in bytes")
     ap2.add_argument("--s-wr-slp", metavar="SEC", type=float, default=0, help="socket write delay in seconds")
+    ap2.add_argument("--rsp-slp", metavar="SEC", type=float, default=0, help="response delay in seconds")
 
     ap2 = ap.add_argument_group('SSL/TLS options')
     ap2.add_argument("--http-only", action="store_true", help="disable ssl/tls")
diff --git a/copyparty/httpcli.py b/copyparty/httpcli.py
index c98a573c..bc1f607f 100644
--- a/copyparty/httpcli.py
+++ b/copyparty/httpcli.py
@@ -126,7 +126,8 @@ class HttpCli(object):
             self.loud_reply(unicode(ex), status=ex.code, volsan=True)
             return self.keepalive
 
-        # time.sleep(0.4)
+        if self.args.rsp_slp:
+            time.sleep(self.args.rsp_slp)
 
         # normalize incoming headers to lowercase;
         # outgoing headers however are Correct-Case