url
  http://example.com/chunked.html
expected
  abcdefghijklmnopqrstuvwxyz1234567890abcdef
expected_headers
  transfer-encoding: chunked
  x-a: Foo
  x-a: Bar
  x-a: Baz
  x-b: Foo
  x-b: Bar
  x-b: Baz
  x-c: Foo

----------
GET /chunked.html HTTP/1.1
Host: example.com
Connection: close
User-Agent: HTTP-Tiny/VERSION

----------
HTTP/1.1 200 OK
Transfer-Encoding: chunked
X-A: Foo
X-B: Foo
X-B: Bar

2C
abcdefghijklmnopqrstuvwxyz1234567890abcdef

0
X-A: Bar
X-A: Baz
X-B: Baz
X-C: Foo