GET /hello?dump_vars=1 HTTP/1.1
Host: 127.0.0.1:8080
User-Agent: python-requests/2.21.0
Accept-Encoding: gzip, deflate
Accept: */*
Connection: keep-alive
Cookie: OTHERCOOKIE=some cookie value; SOMECOOKIE=1c330301-89e4-408a-bf6c-ce107efe8a27; foo=bar

