hg: jdk9/sandbox/jdk: http-client-branch: improve tracing of GOAWAY and connection preface

[daniel.fuchs at oracle.com]

Changeset: 529db20dfc09
Author:    dfuchs
Date:      2016-09-09 16:16 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/529db20dfc09

http-client-branch: improve tracing of GOAWAY and connection preface

! src/java.httpclient/share/classes/java/net/http/Http2Connection.java