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@GianfriAur GianfriAur released this 12 May 14:25
· 30 commits to master since this release
v4.3.1
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[v4.3.1] - 2026-05-12
Patch release. Completes the v4.3.0 compliance work on identity-token policyId discovery. No public API changes.

Compliance
UserName and Certificate policyId discovery. Previously the client only triggered GetEndpoints discovery when the server certificate or the anonymous policyId were unknown. If anonymousPolicyId was already cached, a subsequent connection with UserName or Certificate credentials skipped discovery and fell back to the hardcoded defaults ("username", "certificate") from SessionService. Servers that publish non-standard policyIds (open62541, Siemens S7, several COTS PLCs) rejected ActivateSession with BadIdentityTokenInvalid (0x80200000). The discovery trigger in Client\ManagesConnectionTrait::performConnect now also fires when usernamePolicyId or certificatePolicyId is null. This completes the v4.3.0 anonymous-policyId compliance fix for the remaining two identity token types. Reported in discussion #5.

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