"Roger Down" wrote:

> I have used the SoapDocumentMethod(OneWay=true) on a web service.
>
> Inside all my web services, I want to know who is accessing the respective
> web service methods.
>
> So I used the following two lines for this:
>
> HttpContext httpContext = HttpContext.Current;
> string userHostAddress = httpContext.Request.UserHostAddress;
>
> When using this on a web service method not using the OneWay=true attribute,
> everything works fine.
>
> But on those web service methods where OneWay=true is added, I get the
> following exception...:
>
> Object reference not set to an instance of an object.
> at
> System.Web.Hosting.ISAPIWorkerRequestInProc.GetAdditionalServerVar(Int32
> index)
> at System.Web.Hosting.ISAPIWorkerRequestInProc.GetServerVariable(String
> name)
> at System.Web.Hosting.ISAPIWorkerRequest.GetRemoteAddress()
> at System.Web.HttpRequest.get_UserHostAddress()
>
>
> Is this by design or is this a bug ?
>
> Are there other ways of getting the client ip address when using the
> OneWay=true ?
>
> Best of regards...
>
>