// The inclusion of a body in the response to a CONNECT is key to reproducing b/6754912.
    server.enqueue(
      MockResponse(
        body = "bogus proxy connect response content",
        inTunnel = true,
      ),
    )
    server.enqueue(MockResponse(body = "response"))

    // Configure a single IP address for the host and a single configuration, so we only need one
    // failure to fail permanently.
    client =