1000 1285 1158 1286 1157

======== BEGIN INBOUND STREAM ========
PUT /articles/123/ HTTP/1.1
Host: example.com
User-Agent: demo
Content-Type: text/plain
Content-Length: 16
Prefer: Handling=lenient ; param1="this is a parameter to 'handling'!" ;param2
Prefer: BWS-is-not-parsed = because-see-errata
Prefer: wait="600" , my-pref;;;FOO;;;bar="",  respond-async , wait=0
Prefer: return=something-else

Hello world!

======== BEGIN OUTBOUND STREAM ========
HTTP/1.1 200 OK
Date: Thu, 31 Dec 2015 18:26:56 GMT
Content-Type: text/plain
Content-Length: 18
Preference-applied: handling="lenient", wait=600, respond-async=true

Article updated.
