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Network / TLS / earlyDataEnabled(_:)

Contents

Declaration
Parameters
Discussion

earlyDataEnabled(_:)

Enable early data (0-RTT) for TLS.

Declaration

func earlyDataEnabled(_ enabled: Bool) -> TLS

Parameters

enabled:
True to enable early data, false otherwise.

Discussion

warning:

This may have security implications for application data. In particular, TLS early data is replayable by a network attacker. You must account for this when sending data before the handshake is confirmed. See RFC 8446 for more information. You MUST NOT enable fast open without a specific application profile that defines its use.

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NetworkInstance Method

iOS 26.0+iPadOS 26.0+Mac Catalyst 26.0+macOS 26.0+tvOS 26.0+visionOS 26.0+watchOS 26.0+

Declaration
Parameters
Discussion

Built on 2026-05-07