RFC 8449 · PROPOSED STANDARD · 2018
MON · 27 JUL 2026
Record Size Limit Extension for TLS
Overview
RFC 8449, “Record Size Limit Extension for TLS”, is a Proposed Standard document published in August 2018 by M. Thomson. It updates RFC 6066. The canonical text is published by the RFC Editor.
Abstract
An extension to Transport Layer Security (TLS) is defined that allows endpoints to negotiate the maximum size of protected records that each will send the other.
This replaces the maximum fragment length extension defined in RFC 6066.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 8449 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 2018
- RFC 8450 RTP Payload Format for VC-2 High Quality Profile
- RFC 8451 Considerations for Selecting RTP Control Protocol Extended Report Metrics for the WebRTC Statistics API
- RFC 8447 IANA Registry Updates for TLS and DTLS
- RFC 8446 The Transport Layer Security Protocol Version 1.3
- RFC 8453 Framework for Abstraction and Control of TE Networks
- RFC 8445 Interactive Connectivity Establishment : A Protocol for Network Address Translator Traversal
- RFC 8454 Information Model for Abstraction and Control of TE Networks
- RFC 8444 OSPFv2 Extensions for Bit Index Explicit Replication