Question

So this code runs in an asp.net app on Linux. The code calls one of my services. (WCF doesn’t work on mono currently, that is why I’m using asmx). This code works AS INTENDED when running from Windows (while debugging). As soon as I deploy to Linux, it stops working. I’m definitely baffled. I’ve tested the service thoroughly and the service is fine.

Here is the code producing an error: (NewVisitor is a void function taking 3 strings in)

//This does not work.
try
 {
     var client = new Service1SoapClient();
     var results = client.NewVisitor(Request.UserHostAddress, Request.UrlReferrer == null ? String.Empty : Request.UrlReferrer.ToString(), Request.UserAgent);
     Logger.Debug("Result of client: " + results);
 }

Here is the error generated: Object reference not set to an instance of an object

Here is the code that works perfectly:

 //This works (from the service)
 [WebMethod(CacheDuration = _cacheTime, Description = "Returns a List of Dates", MessageName = "GetDates")]
 public List<MySqlDateTime> GetDates()
 {
     return db.GetDates();
 }

 //Here is the code for the method above
 var client = new Service1Soap12Client();
 var dbDates = client.GetDates();

I’d love to figure out why it is saying that the object is not set.

Methods tried:

1. new soap client.
2. new soap client with binding and endpoint address specified
3. Used channel factory to create and open the channel.

If more info is needed I can give more. I’m out of ideas.

Answer 1

It looks like a bug in mono. You should file a bug with a reproducible test case so it can be fixed (and possibly find a workaround you can use).