TLSEXT_max_fragment_length_UNSPECIFIED
ss->ext.max_fragment_len_mode = TLSEXT_max_fragment_length_UNSPECIFIED;
if (s->session->ext.max_fragment_len_mode == TLSEXT_max_fragment_length_UNSPECIFIED)
if (s->session->ext.max_fragment_len_mode == TLSEXT_max_fragment_length_UNSPECIFIED)
if (session->ext.max_fragment_len_mode == TLSEXT_max_fragment_length_UNSPECIFIED)