DNX / ASP 5 - ${aspnet-request:serverVariable result in System.NotSupportedException

[sgutkin]

The documentation https://github.com/NLog/NLog/wiki/AspNetRequest-layout-renderer

implies that serverVariable works for asp.net5 /coreclr but the source code

https://github.com/NLog/NLog.Web/blob/master/NLog.Web.ASPNET5/LayoutRenderers/AspNetRequestValueLayoutRenderer.cs

explicitly seems to throw an exception :

else if (this.ServerVariable != null)
{
#if !DNX
builder.Append(httpRequest.ServerVariables[this.ServerVariable]);
#else
throw new NotSupportedException();
#endi

For example in my nlog.config, the first 3 parameters work fine but the last two throw internal nlog exceptions (Warn Exception in layout renderer. Exception: System.NotSupportedException: Specified method is not supported.)

• parameter name="@requestmethod" layout="${aspnet-item:variable=RequestMethod}"/
• parameter name="@responseParamThree" layout="${aspnet-request:header=X-Forwarded-For}"/
• parameter name="@responseParamFour" layout="${aspnet-request:serverVariable=REMOTE_ADDR}"/
• parameter name="@responseParamFive" layout="${aspnet-request:serverVariable=ALL_RAW}"/

From project.json

"dependencies": {
.....
"NLog": "4.4.0-beta1",
"NLog.Config": "4.3.0-beta1",
"NLog.Extensions.Logging": "1.0.0-rc1-final-2016-03-11",
"NLog.Schema": "4.3.0-beta1",
"NLog.Web.ASPNET5": "4.2.1",
.......

[304NotModified]

That's sloppy documentation. We can't read the server variables in dnx (or AFAIK)

[sgutkin]

Yeah I figured as much. In RC1 the remote IP isn't readily accessible on Microsoft.AspNet.Http.HttpContext. I think they plan to fix it for RC2.

[304NotModified]

superseded by #44