HTTP/1.1 200 OK 
Content-Type: text/plain
Server: WEBrick/1.3.1 (Ruby/2.4.1/2017-03-22) OpenSSL/1.0.2k
Date: Mon, 29 Jan 2018 01:50:54 GMT
Content-Length: 3
Connection: Keep-Alive
Set-Cookie: a=1
Set-Cookie: b=2