[haggaipp]

Hi, Mikhail.
Can I get data from this url: http://webserver/scada/ClientApiSvc.svc/GetCurCnlDataExt?cnlNums=&viewIDs=&viewID=1

I use XMLHttpRequest in my JS code. But it always says, user not logged in. When i check the ScadaWeb.log it keeps adding User Information in every request. Can you solve this?

My Javascript code:

var xhttp = new XMLHttpRequest();

    function main() {
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200) {
                // Typical action to be performed when the document is ready:
                let tmp = JSON.parse(xhttp.responseText);
                let response = JSON.parse(tmp.d);
                console.log(response);
                if (response.Success) {
                    if (response.Data) {
                        getData();
                    } else {
                        console.log("SERVER NOT LOGGED IN");
                        logIn();
                    }

                } else {
                    console.log("[ERROR]: " + response.ErrorMessage);
                }
            }
        };
        xhttp.open("GET", "http://localhost:8080/scada/ClientApiSvc.svc/CheckLoggedOn", true);
        xhttp.send();
    }

    function logIn() {
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200) {
                // Typical action to be performed when the document is ready:
                let tmp = JSON.parse(xhttp.responseText);
                let response = JSON.parse(tmp.d);
                console.log(response);
                if (response.Success) {
                    if (response.Data) {
                        console.log("LOG IN SUCCESSFUL!");
                        // getData();
                        // main();
                    } else {
                        console.log("FAILED TO LOG IN!");
                    }
                } else {
                    console.log("[ERROR]: " + response.ErrorMessage);
                }
            }
        };
        xhttp.open("GET",
            "http://localhost:8080/scada/ClientApiSvc.svc/Login?username=admin&password=12345&callback=true", true);
        xhttp.send();

    }

    function getData() {
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200) {
                // Typical action to be performed when the document is ready:
                let tmp = JSON.parse(xhttp.responseText);
                let response = JSON.parse(tmp.d);
                console.log(response);
                if (response.Success) {
                    console.log("FETCH DATA SUCCESSFUL!");
                    console.log(response.Data)
                } else {
                    console.log("[ERROR]: " + response.ErrorMessage);
                }
            }
        };
        xhttp.open("GET",
            "http://localhost:8080/scada/ClientApiSvc.svc/GetCurCnlDataExt?cnlNums=&viewIDs=&viewID=2&callback=true",
            true);
        xhttp.send();
    }

    getData();

Scada Web Log:

2022-08-01 20:07:59 <DESKTOP-RLH5Q4C><DefaultAppPool><ACT> Request SCADA-Server state
2022-08-01 20:07:59 <DESKTOP-RLH5Q4C><DefaultAppPool><ACT> Disconnect from SCADA-Server
2022-08-01 20:07:59 <DESKTOP-RLH5Q4C><DefaultAppPool><ACT> Connect to SCADA-Server "localhost"
2022-08-01 20:07:59 <DESKTOP-RLH5Q4C><DefaultAppPool><ACT> User information has been added. IP address: ::1. Session: fgkmemvsn0avgnhrfx1f40sw
2022-08-01 20:07:59 <DESKTOP-RLH5Q4C><DefaultAppPool><ACT> Login: admin (Administrator). IP address: ::1
2022-08-01 20:07:59 <DESKTOP-RLH5Q4C><DefaultAppPool><ACT> User information has been updated. IP address: ::1. Session: fgkmemvsn0avgnhrfx1f40sw
2022-08-01 20:07:59 <DESKTOP-RLH5Q4C><DefaultAppPool><ACT> Retrieve components from the installed plugins
2022-08-01 20:08:01 <DESKTOP-RLH5Q4C><DefaultAppPool><ACT> User information has been added. IP address: ::1. Session: ul23o4sslwbbznovlxl242w2
2022-08-01 20:08:01 <DESKTOP-RLH5Q4C><DefaultAppPool><EXC> Error getting extended current data by the filter where channels=, view id=2:
Scada.ScadaException: User not logged on.
   at Scada.Web.UserMonitor.CheckLoggedOn(UserRights& userRights, Boolean throwOnFail)
   at Scada.Web.ClientApiSvc.GetCurCnlDataExt(String cnlNums, String viewIDs, Int32 viewID)

Or there is the other way to fetch data from OPC server? I use JS and PHP.

Thank You!

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