Optionalcontext: ISessionContexta Boolean parameter with the following values:
* true passed continuationPoints shall be reset to free resources in
the Server. The continuation points are released and the results
and diagnosticInfos arrays are empty.
* false passed continuationPoints shall be used to get the next set of
browse information.
A Client shall always use the continuation point returned by a Browse or
BrowseNext response to free the resources for the continuation point in the
Server. If the Client does not want to get the next set of browse information,
BrowseNext shall be called with this parameter set to true.
{CallMethodRequest} the call method request
const methodToCall = {
objectId: "ns=2;i=12",
methodId: "ns=2;i=13",
inputArguments: [
new Variant({...}),
new Variant({...}),
]
}
session.call(methodToCall,function(err,callResult) {
if (!err) {
console.log(" statusCode = ",callResult.statusCode);
console.log(" inputArgumentResults[0] = ",callResult.inputArgumentResults[0].toString());
console.log(" inputArgumentResults[1] = ",callResult.inputArgumentResults[1].toString());
console.log(" outputArgument[0] = ",callResult.outputArgument[0].toString()); // array of variant
}
});
const methodsToCall = [ {
objectId: "ns=2;i=12",
methodId: "ns=2;i=13",
inputArguments: [
new Variant({...}),
new Variant({...}),
]
}];
session.call(methodsToCall,function(err,callResults) {
if (!err) {
const callResult = callResults[0];
console.log(" statusCode = ",rep.statusCode);
console.log(" inputArgumentResults[0] = ",callResult.inputArgumentResults[0].toString());
console.log(" inputArgumentResults[1] = ",callResult.inputArgumentResults[1].toString());
console.log(" outputArgument[0] = ",callResult.outputArgument[0].toString()); // array of variant
}
});
Pseudo session is an helper object that exposes the same async methods than the ClientSession. It can be used on a server address space.
Code reused ! The primary benefit of this object is that its makes advanced OPCUA operations that uses browse, translate, read, write etc similar whether we work inside a server or through a client session.