Hello,

Also to add Record size limit is working only with TLS 1.3 and with application data, Thank you.

Best regards,

Waleed Elmelegy

Mbed TLS Developer

From: Tom Cosgrove via mbed-tls <mbed-tls@lists.trustedfirmware.org>
Date: Tuesday, 26 March 2024 at 13:43
To: norbert.fabritius@esrlabs.com <norbert.fabritius@esrlabs.com>
Cc: mbed-tls@lists.trustedfirmware.org <mbed-tls@lists.trustedfirmware.org>
Subject: [mbed-tls] Re: Status of RFC 8449 support

Hi

Thanks for spotting that and letting us know. 

The warning was included when we started working on the feature, but support for RFC 8449 should now be complete.

I've raised  pull request (https://github.com/Mbed-TLS/mbedtls/pull/8990) to remove the warning.

Many thanks

Tom Cosgrove

Mbed TLS Developer

---

From: norbert.fabritius--- via mbed-tls <mbed-tls@lists.trustedfirmware.org>
Sent: 26 March 2024 07:52
To: mbed-tls@lists.trustedfirmware.org <mbed-tls@lists.trustedfirmware.org>
Subject: [mbed-tls] Status of RFC 8449 support

I saw the following comment when configuring Record Size Limit Extension (RFC 8449) in `mbedtls_config.h` [1]:

> This extension is currently in development and must NOT be used except for testing purposes.

Is this still accurate? What functionality is missing for full RFC 8449 support? Is this feature planned for a specific date?

[1] https://github.com/Mbed-TLS/mbedtls/blob/611f899c0c9d397baedfaec34ea0861ad2543991/include/mbedtls/mbedtls_config.h#L1727
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