Since HTTP/2 spec requires for client to send connection preface, it is reasonable to make this option enabled by default. It is still a use case to disable this, so replace this option with nghttp2_option_set_no_recv_client_preface().
Since HTTP/2 spec requires for client to send connection preface, it is reasonable to make this option enabled by default. It is still a use case to disable this, so replace this option with nghttp2_option_set_no_recv_client_preface().