AspNet Request Trailers Layout Renderer

ASP.NET Request Trailers

Platforms Supported: Limited (Only supported in Asp.NetCore)

Introduced with NLog.Web.AspNetCore v5.1.0

Configuration Syntax

${aspnet-request-trailersitems=String[]:outputFormat=Enum
    :itemSeparator=String:valueSeparator=String
    :valuesOnly=Boolean}

Options

Rendering Options

• Items - Trailer names to be rendered. A list of keys can be passed as comma separated values, e.g.: Key1,Key2 (Not specified means all)

  Introduced with NLog.Web / NLog.Web.AspNetCore v5.2.1, and replaces the TrailerNames-option.

• Exclude - Trailer names to be excluded. A list of keys can be passed as comma separated values, e.g.: Key1,Key2

Formatting options

• outputFormat - Renders as flat string or as JSON. Default: Flat.
  • Flat - Key-value-pair as standard string
  • JsonArray - Key-value-pair in JSON-array
  • JsonDictionary - Key-value-pair as JSON-dictionary
• itemSeparator - Separator between items. Default: ,. Only applies when OutputFormat is Flat.
• valueSeparator - Separator between value and key. Default: =. Only applies when OutputFormat is Flat.
• ValuesOnly - Only render the values of the key/value pairs. Default: false.
• LowerCaseKeys - Convert Keys to lowercase. Default: false.

  Introduced in NLog.Web / NLog.Web.AspNetCore 5.1.1