[gnutls-devel] GnuTLS | Fix issues in record_size_limit extension handling (!879)

Development of GNU's TLS library gnutls-devel at lists.gnutls.org
Thu Jan 31 20:37:11 CET 2019

Hubert Kario started a new discussion on lib/ext/record_size_limit.c:

>  	if (new_size < MIN_RECORD_SIZE)
>  		return 0;
> -	session->internals.hsk_flags |= HSK_RECORD_SIZE_LIMIT_NEGOTIATED;
> +	/* if a record size larger than user specified maximum, ignore it */
> +	if (new_size > session->security_parameters.max_record_send_size)
> +		return 0;

I'm not sure how that helps... so the client advertises that it can handle, say 2^12 B long records, but we have memory to send 2^10 records at most, why then should we _not_ negotiate the extension when the client will have no problem accepting our small 2^10 B records?

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