Script Task execution error with HTTP request

  • I have a script task that tries to execute a HTTP request, which seems to work in isolation - when manually clicking on the URL, it will perform the action successfully.

    The problem is that when executing the whole task it produced this error :

    [HTTP Request Error] Error: An error occurred while sending the request.

    Error: The script returned a failure result.

    Could anyone assist and help work the problem?

    I'm using Visual Studio Pro 2019 with C#2019 Script Language, .Net Framework 4.7.

    Below is the full code. Thank you.

    #region Namespaces
    using System;
    using System.Data;
    using Microsoft.SqlServer.Dts.Runtime;
    using System.Windows.Forms;
    using System.Net.Http;
    using System.Threading.Tasks;
    #endregion


    namespace ST_eb53a97982444b89964d7d24c32bd5ba
    {
    /// <summary>
    /// ScriptMain is the entry point class of the script. Do not change the name, attributes,
    /// or parent of this class.
    /// </summary>
    [Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute]
    public partial class ScriptMain : Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
    {
    #region Help: Using Integration Services variables and parameters in a script
    /* To use a variable in this script, first ensure that the variable has been added to
    * either the list contained in the ReadOnlyVariables property or the list contained in
    * the ReadWriteVariables property of this script task, according to whether or not your
    * code needs to write to the variable. To add the variable, save this script, close this instance of
    * Visual Studio, and update the ReadOnlyVariables and
    * ReadWriteVariables properties in the Script Transformation Editor window.
    * To use a parameter in this script, follow the same steps. Parameters are always read-only.
    *
    * Example of reading from a variable:
    * DateTime startTime = (DateTime) Dts.Variables["System::StartTime"].Value;
    *
    * Example of writing to a variable:
    * Dts.Variables["User::myStringVariable"].Value = "new value";
    *
    * Example of reading from a package parameter:
    * int batchId = (int) Dts.Variables["$Package::batchId"].Value;
    *
    * Example of reading from a project parameter:
    * int batchId = (int) Dts.Variables["$Project::batchId"].Value;
    *
    * Example of reading from a sensitive project parameter:
    * int batchId = (int) Dts.Variables["$Project::batchId"].GetSensitiveValue();
    * */


    #endregion


    #region Help: Firing Integration Services events from a script
    /* This script task can fire events for logging purposes.
    *
    * Example of firing an error event:
    * Dts.Events.FireError(18, "Process Values", "Bad value", "", 0);
    *
    * Example of firing an information event:
    * Dts.Events.FireInformation(3, "Process Values", "Processing has started", "", 0, ref fireAgain)
    *
    * Example of firing a warning event:
    * Dts.Events.FireWarning(14, "Process Values", "No values received for input", "", 0);
    * */
    #endregion


    #region Help: Using Integration Services connection managers in a script
    /* Some types of connection managers can be used in this script task. See the topic
    * "Working with Connection Managers Programatically" for details.
    *
    * Example of using an ADO.Net connection manager:
    * object rawConnection = Dts.Connections["Sales DB"].AcquireConnection(Dts.Transaction);
    * SqlConnection myADONETConnection = (SqlConnection)rawConnection;
    * //Use the connection in some code here, then release the connection
    * Dts.Connections["Sales DB"].ReleaseConnection(rawConnection);
    *
    * Example of using a File connection manager
    * object rawConnection = Dts.Connections["Prices.zip"].AcquireConnection(Dts.Transaction);
    * string filePath = (string)rawConnection;
    * //Use the connection in some code here, then release the connection
    * Dts.Connections["Prices.zip"].ReleaseConnection(rawConnection);
    * */
    #endregion





    /// <summary>
    /// This method is called when this script task executes in the control flow.
    /// Before returning from this method, set the value of Dts.TaskResult to indicate success or failure.
    /// To open Help, press F1.
    /// </summary>
    public void Main()
    {
    // TODO: Add your code here
    try
    {
    // Call the async method and wait for result
    string response = MakeHttpRequest().GetAwaiter().GetResult();


    Dts.TaskResult = (int)ScriptResults.Success;
    }
    catch (Exception ex)
    {
    Dts.Events.FireError(0, "HTTP Request Error", ex.Message, string.Empty, 0);
    Dts.TaskResult = (int)ScriptResults.Failure;
    }
    }
    private async Task<string> MakeHttpRequest()
    {
    using (HttpClient client = new HttpClient())
    {
    // Set base address or full URL
    string url = "https://88b272437715eede88141dd674f873.ac.environment.api.powerplatform.com:443/powerautomate/automations/direct/workflows/cfe02122c439490fa6dadce1fba9bc63/triggers/manual/paths/invoke?api-version=1&sp=%2Ftriggers%2Fmanual%2Frun&sv=1.0&sig=WQMiT8ZAcrScFaqwaPADRFxrq1moI9MysV7Vgg16hv0";


    // Optional: Add headers
    client.DefaultRequestHeaders.Add("Accept", "application/json");


    // Send GET request
    HttpResponseMessage response = await client.GetAsync(url);
    response.EnsureSuccessStatusCode();


    // Read response content
    return await response.Content.ReadAsStringAsync();
    }
    }


    #region ScriptResults declaration
    /// <summary>
    /// This enum provides a convenient shorthand within the scope of this class for setting the
    /// result of the script.
    ///
    /// This code was generated automatically.
    /// </summary>
    enum ScriptResults
    {
    Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
    Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
    };
    #endregion


    }
    }
  • Run the script in debug mode to determine the line which causes the error and to dig deeper into the details of the error.


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