The CloseAndUpdate Method closes the TrustList and applies the changes to the TrustList. It can only be called if the TrustList was opened for writing. If the Close Method is called any cached data is discarded and the TrustList is not changed.
If only part of the TrustList is being updated the Server creates a new TrustList that includes the existing TrustList plus any updates and validates the new TrustList.
The Server shall verify that every Certificate in the new TrustList is valid using the validation process defined in OPC 10000-4. If an invalid Certificate is found the Server shall return an error and shall not replace the existing TrustList.
If the Server does not support transactions it applies the changes immediately and sets applyChangesRequired to FALSE. If the Server supports transactions then the Server creates a new transaction or continues an existing transaction and sets applyChangesRequired to TRUE.
If a transaction exists, the Server does not update the TrustList until ApplyChanges (see 7.10.6) is called. Any Clients that read the TrustList before ApplyChanges is called will receive the existing TrustList before the transaction started.
If errors occur, the new TrustList is discarded.
When the TrustList changes the Server shall re-evaluate the Certificate associated with any open Sessions. Sessions with an untrusted or revoked Certificate shall be closed.
The structure uploaded includes a mask (see 7.8.2.7) which specifies which fields are updated. If a bit is not set then the associated field is not changed.
Signature
CloseAndUpdate(
[in] UInt32 fileHandle
[out] Boolean applyChangesRequired
);
|
Argument |
Description |
|
fileHandle |
The handle of the previously opened file. |
|
applyChangesRequired |
If TRUE the ApplyChanges Method (see 7.10.6) shall be called before the new TrustList will be used by the Server. If FALSE the TrustList is now in use. |
Method Result Codes (defined in Call Service)
|
Result Code |
Description |
|
Bad_UserAccessDenied |
The current user does not have the rights required. |
|
Bad_CertificateInvalid |
The Server could not validate all Certificates in the TrustList. The DiagnosticInfo shall specify which Certificate(s) are invalid and the specific error. |
|
Bad_ChangesPending |
Table 24 specifies the AddressSpace representation for the CloseAndUpdate Method.
Table 24 – CloseAndUpdate Method AddressSpace Definition
|
Attribute |
Value |
||||
|
BrowseName |
0:CloseAndUpdate |
||||
|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
ModellingRule |
|
0:HasProperty |
Variable |
0:InputArguments |
0:Argument[] |
0:PropertyType |
Mandatory |
|
0:HasProperty |
Variable |
0:OutputArguments |
0:Argument[] |
0:PropertyType |
Mandatory |