1000

======== BEGIN INBOUND STREAM ========
POST /articles/ HTTP/1.1
Host: example.com
Expect: something
User-Agent: demo
Content-Length: 16
Content-Type: text/plain

Hello world!

======== BEGIN OUTBOUND STREAM ========
HTTP/1.1 417 Expectation Failed
Date: Thu, 31 Dec 2015 18:26:56 GMT
Content-Type: text/plain
Content-Length: 14

Sorry, what?
