C# SDK Login error when connecting from CLR application

[flettera]

I've created an application that exports data from a SQL database to Splunk over HTTP, and it works great. I've attempted to port it over to a CLR function so that I can run it as a SQL Stored Procedure, and it returns an interesting error when trying to log on to the management port:

Msg 6549, Level 16, State 1, Procedure DataExporter, Line 0
A .NET Framework error occurred during execution of user defined routine or aggregate 'DataExporter': 
System.ArgumentException: The path is not of a legal form.
System.ArgumentException: 
   at System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
   at System.IO.Path.GetFullPath(String path)
   at System.Diagnostics.FileVersionInfo.GetFullPathWithAssert(String fileName)
   at System.Diagnostics.FileVersionInfo.GetVersionInfo(String fileName)
   at Splunk.HttpService.Send(String path, RequestMessage request)
   at Splunk.Service.Login(String username, String password)
   at DataExporter.Exporter.SplunkExport(List`1 messages)
   at DataExporter.Exporter.DoExport(List`1 messages)
   at DataExporter.GetRecordsAndExport.ExportJSON(Exporter export, SqlDataReader r, StringBuilder sb, StringWriter sw, String& returnvalue, Int32& recCount, List`1 messages)
   at DataExporter.GetRecordsAndExport.DoIt(String QueryName, Database db, Exporter export)
   at DataExporter.ExportType.Export(Database db)
   at DataExporter.ExportData.Export360Data(Int32 ProfileID, SqlString dbName)
. User transaction, if any, will be rolled back.

Here is the code that makes the connection and sends the data:

    public bool SplunkExport(List<string> messages)
    {

        Logger log = new Logger();
        ServiceArgs svcArgs = new ServiceArgs();

        svcArgs.App = splunkapp;
        svcArgs.Host = ip;
        svcArgs.Port = Convert.ToInt32(port);
        Service splunkService = new Service(svcArgs);

        try
         {

            splunkService.Login(user, pass);
            Receiver splunkReceiver = new Receiver(splunkService);

            var args = new Args();
            args.Add("host", host);
            args.Add("sourcetype", type);
            args.Add("source", "Spector360");
            using (var stream = splunkReceiver.Attach(args))
            {
                foreach (var message in messages)
                {
                    log.WriteErrorMessage(message.ToString());
                    var bytes = Encoding.UTF8.GetBytes(message + "\r\n");
                    stream.Write(bytes, 0, bytes.Length);
                    stream.Flush();
                }
            }
            return true;
        }
       catch (Exception e)
        {
            log.WriteErrorMessage(e.Message);
            return false;
        }

    }

All the variables get the correct values, and this exact same code works when used in my forms application. The SDK documentation is kind of sparse. I am only trying to send data to Splunk over http. Is there something I am missing here, or a better way to do this?

Thanks in advance!

[flettera · Accepted solution]

I've come up with a solution to this. I removed the SDK and used HttpWebRequest. Looks like the SDK targets .NET 4.5, and SQL Server does not seem to like it.

[flettera]

Here's the code I used:

   public bool SplunkExport(List<string> messages)
    {

        ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(AcceptAllCertifications);
        string baseuri = "https://" + ip + ":" + port;
        string uri = "/services/collector";
        HttpWebRequest client = (HttpWebRequest)WebRequest.Create((baseuri + uri));
        client.ContentType = "application/json; charset=utf-8";
        client.Method = "POST";
        client.Headers["Authorization"] = "Splunk " + SplunkToken;
        client.Headers["x-splunk-input-mode"] = "streaming";

        try
        {
            using (Stream streamWriter = client.GetRequestStream())
            {
                foreach (var message in messages)
                {
                    var m = "{\"sourcetype\":\"" + type + "\", \"host\":\"" + host + "\",\"event\": " + message + "}";
                    byte[] bytes = Encoding.UTF8.GetBytes(m);
                    streamWriter.Write(bytes, 0, bytes.Length);
                    streamWriter.Flush();
                }
                var httpResponse = (HttpWebResponse)client.GetResponse();
                using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
                {
                    var result = streamReader.ReadToEnd();
                }
            }
            return true;
        }
        catch
        {
            return false;
        }
    }

The messages list is a list of events in JSON format.