# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1577958577 -3600
# Node ID 10d6d0d91f4ec47a6eb446792fee1d4b79a914d7
# Parent  419ac5ef2d3d74274971ecfedd6dab26059ce6df
mod_websocket: Clear mask bit when reflecting ping frames (fixes #1484)

diff -r 419ac5ef2d3d -r 10d6d0d91f4e plugins/mod_websocket.lua
--- a/plugins/mod_websocket.lua	Tue Dec 31 02:50:25 2019 +0100
+++ b/plugins/mod_websocket.lua	Thu Jan 02 10:49:37 2020 +0100
@@ -236,6 +236,7 @@
 			return;
 		elseif opcode == 0x9 then -- Ping frame
 			frame.opcode = 0xA;
+			frame.MASK = false; -- Clients send masked frames, servers don't, see #1484
 			conn:write(build_frame(frame));
 			return "";
 		elseif opcode == 0xA then -- Pong frame, MAY be sent unsolicited, eg as keepalive