``
> GET http://a.test/ping HTTP/1.1
> Host: a.test
> User-Agent: curl/``
> Accept: */*
> Proxy-Connection: Keep-Alive
> uuid: redirect_test_1
``
< HTTP/1.1 200 OK
< date: ``
< Age: ``
< Transfer-Encoding: chunked
< Proxy-Connection: keep-alive
< Server: ATS/``
``