[gnutls-devel] GnuTLS | WIP: RFC7250 certificate type negotiation (!498)

[Development of GNU's TLS library]

Tom commented on a discussion on lib/ext/server_cert_type.c:

> +			_gnutls_session_server_cert_type_set(session, cert_type);
> +			ret = GNUTLS_E_SUCCESS;
> +		} else {
> +			// No valid cert type found
> +			ret = GNUTLS_E_UNSUPPORTED_CERTIFICATE_TYPE;
> +		}
> +
> +		// Clean-up
> +		_gnutls_free_datum(&cert_types);
> +
> +		return ret;
> +
> +	} else		// server mode
> +	{
> +		// Compare packet length with expected packet length.
> +		DECR_LEN(len, 1);

I think it would be possible because there are no other extensions that depend on the certificate type I think. But how would you enforce that this extension will be parsed after the PSK extension? By putting it lower in the `hello_ext_entry_st`? That is already the case in my implementation.

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