method/client_method.cpp

// This example requires the server example `server_method` to be running.
 
#include <iostream>
 
#include <open62541pp/client.hpp>
#include <open62541pp/node.hpp>
 
int main() {
    opcua::Client client;
    client.connect("opc.tcp://localhost:4840");
 
    // Browse method node
    opcua::Node objectsNode(client, opcua::ObjectId::ObjectsFolder);
    const opcua::Node greetMethodNode = objectsNode.browseChild({{1, "Greet"}});
 
    // Call method from parent node (Objects)
    const auto result = objectsNode.callMethod(
        greetMethodNode.id(), {opcua::Variant::fromScalar("World")}
    );
    std::cout << result.getOutputArguments()[0].getScalar<opcua::String>() << std::endl;
}