- keep-alive? request-or-responseprocedure
Returns #t when the given request or response object belongs to a connection that should be kept alive, #f if not. Remember that both parties must agree on whether the connection is to be kept alive or not; HTTP/1.1 defaults to keep alive unless a Connection: close header is sent, HTTP/1.0 defaults to closing the connection, unless a Connection: Keep-Alive header is sent.