Net Core NLog.Web "aspnet-request:header" property usage? - asp.net-core-mvc

Question

Is there any way to log all headers using "aspnet-request:header" property with one parameter? Or should I get headers one by one like "aspnet-request:header=MyHeader" and combine them into one parameter before insert? I have lots of headers and don't want to add them seperately, I need a quick way to log them if its possible.

Answer 1

Currently only one at once header is supported, as it calls
string header = httpRequest.Headers[this.Header]; see source
edit: you could plug it in NLog like this:
using System;
using System.Text;
using Microsoft.AspNetCore.Http;
using NLog.Config;
using NLog.LayoutRenderers;
using NLog.Web.Internal;
namespace NLog.Web.LayoutRenderers
{
/// <summary>
/// Render all headers for ASP.NET Core
/// </summary>
/// <example>
/// <code lang="NLog Layout Renderer">
/// ${aspnet-request-all-headers}
/// </code>
/// </example>
[LayoutRenderer("aspnet-request-all-headers")]
public class AspNetRequestAllHeadersLayoutRenderer : AspNetLayoutRendererBase
{
protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
{
var httpRequest = HttpContextAccessor.HttpContext.TryGetRequest();
if (httpRequest == null || httpRequest.Headers == null)
{
return;
}
foreach(var kpv in httpRequest.Headers)
{
if (header != null)
{
builder.Append(kpv.Key);
builder.Append(=);
builder.Append(kpv.Value);
}
}
}
}
}
Register it (startup.cs)
ConfigurationItemFactory.Default.LayoutRenderers
.RegisterDefinition("aspnet-request-all-headers", typeof(AspNetRequestAllHeadersLayoutRenderer ));
See also Extending NLog
usage
${aspnet-request-all-headers}