fstTLS1

fstTLS1 = 5

Example

function UsesDeprecatedTLS10(const Value: TvxSSLClientType): Boolean;
begin
  Result := Value = fstTLS1;
end;

Usage

fstTLS1 selects Velox's deprecated TLS 1.0 method and remains only for legacy compatibility.

Additional Technical Info

fstTLS1 is ordinal 5 of TvxSSLClientType and maps to sslvTLSv1 (TLS 1.0). It is not a generic “TLS enabled” selector.

TLS 1.0 is deprecated and must not be chosen for new integrations. Treat an existing use as migration debt, identify the legacy peer and move to fstTLS12 or a separately verified modern protocol path. Runtime/server rejection is possible even though the enum exists.

The example only detects legacy configuration and was source-reviewed; no TLS/network/certificate/runtime/image test ran.

External references

• RFC 8996: Deprecating TLS 1.0 and TLS 1.1.

Created 2026-07-15