--- a/plugins/mod_http_file_share.lua	Sat Feb 13 13:38:56 2021 +0100
+++ b/plugins/mod_http_file_share.lua	Sat Feb 13 14:06:46 2021 +0100
@@ -233,6 +233,9 @@
 		end
 		request.body_sink = fh;
 		if request.body == false then
+			if request.headers.expect == "100-continue" then
+				request.conn:write("HTTP/1.1 100 Continue\r\n\r\n");
+			end
 			return true;
 		end
 	end