# The client is offering FSTR/3, but the server wants FSTR/2.

======== BEGIN INBOUND STREAM ========
GET / HTTP/1.1
Host: example.com
User-Agent: demo
Upgrade: SPDY/2
Upgrade: FSTR/3, NNTP
Connection: upgrade

======== BEGIN OUTBOUND STREAM ========
HTTP/1.1 426 Upgrade Required
Date: Thu, 31 Dec 2015 18:26:56 GMT
Upgrade: SMTP, FSTR/2
Content-Type: text/plain
Content-Length: 23
Connection: upgrade

HTTP/1.1? How quaint.
