1129 1130

======== BEGIN INBOUND STREAM ========
OPTIONS /articles/ HTTP/1.1
Host: example.com
User-Agent: demo
If-Match: "EWZNv1K"
Content-Length: 0

======== BEGIN OUTBOUND STREAM ========
HTTP/1.1 412 Precondition Failed
Date: Thu, 31 Dec 2015 18:26:56 GMT
Content-Type: text/plain
Content-Length: 17

Not gonna work.
