goo.gle/debugproto
config {
  virtual_hosts {
    name: "connect-terminate"
    domains: "*"
    routes {
      match {
        connect_matcher {
        }
      }
      route {
        cluster: "some-cluster"
        upgrade_configs {
          upgrade_type: "CONNECT"
          connect_config {
          }
        }
      }
    }
  }
}
headers {
  headers {
    key: ":authority"
    value: "example.com"
  }
  headers {
    key: ":method"
    value: "CONNECT"
  }
  headers {
    key: ":scheme"
    value: "http"
  }
  headers {
    key: "x-safe"
    value: "safe"
  }
  headers {
    key: "x-global-nope"
    value: "global"
  }
  headers {
    key: "x-vhost-nope"
    value: "vhost"
  }
  headers {
    key: "x-route-nope"
    value: "route"
  }
  headers {
    key: "x-forwarded-proto"
    value: "http"
  }
}
