--- a/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/PlainTunnelingConnection.java	Sun Nov 05 17:32:13 2017 +0000
+++ b/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/PlainTunnelingConnection.java	Sun Nov 05 21:19:55 2017 +0000
@@ -64,7 +64,7 @@
                 HttpClientImpl client = client();
                 assert client != null;
                 HttpRequestImpl req = new HttpRequestImpl("CONNECT", address);
-                MultiExchange<Void,Void> mulEx = new MultiExchange<>(req, client, discard(null), null);
+                MultiExchange<Void,Void> mulEx = new MultiExchange<>(null, req, client, discard(null), null);
                 Exchange<Void> connectExchange = new Exchange<>(req, mulEx);
 
                 return connectExchange