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JavascriptLogging Class ▶ RequestId Method

RequestId Method

Returns the current request id.

Definition

// For ASP.NET Framework
public static string RequestId()
    
// For ASP.NET Core    
public static string RequestId(this HttpContext httpContext)

Return Value

A string identifying the current request.

Remarks

This method returns the request id of the current request (details). Including this string in your server side log entries allows you to track which log entries belong to the same request (how).

Each time you call this method within the same request, you will get the same string.

Note that if you call the Configure HTML helper with your own request id, that doesn't mean the RequestId method from that point on returns your request id. RequestId always returns the same request id.

How the request id is found

This method first checks whether the current request is a log request from the jsnlog.js library. If it is, it returns the request id contained in the log request. This way, the request ids in the client side log requests match the request id of the original request to the server that loaded the page that is now sending those log requests.

If it is not a log request, this method comes up with a unique id for the current request.

If you have Event Tracing for Windows (ETW) switched on, JSNLog uses the same request id that is used internally by IIS.

If the method can't get the request id with the above means, it generates a random GUID.

Documentation Menu

  1. Installation
  2. Getting Started
  3. Configuration
    1. On the client
    2. On the server
      1. JSNLog
      2. Logger
      3. AjaxAppender
      4. ConsoleAppender
  4. How To
    1. Adding request headers
    2. AJAX error handling
    3. Angular 2+ logging to the server
    4. AngularJs Error Handling
    5. Console log
    6. Content Security Policy (CSP)
    7. Setting the url to send logs to
    8. Logging cyclic references
    9. Demos and sample code
    10. Lost connection handling
    11. JavaScript Error Handling
    12. Javascript Try Catch
    13. Loading jsnlog.js
      1. AMD
      2. Browserify
      3. Bundles
      4. Free CDN
      5. CommonJS
      6. ES6
      7. Script tag
      8. SystemJS
    14. Log Message Batching
    15. Log Message Format
    16. Numeric Severities
    17. Obfuscated Script Errors
    18. Using Request Ids
    19. Structured JavaScript Logging
  5. jsnlogjs.js
    1. AjaxAppender Object
      1. sendBatch Method
      2. setOptions Method
    2. __jsnlog_configure function
    3. ConsoleAppender Object
      1. sendBatch Method
      2. setOptions Method
    4. Exception Object
    5. JL Namespace and Method
      1. createAjaxAppender Method
      2. createConsoleAppender Method
      3. getAllLevel Method
      4. getDebugLevel Method
      5. getErrorLevel Method
      6. getFatalLevel Method
      7. getInfoLevel Method
      8. getOffLevel Method
      9. getTraceLevel Method
      10. getWarnLevel Method
      11. JL Method
      12. setOptions Method
    6. Logger Object
      1. debug Method
      2. error Method
      3. fatal Method
      4. fatalException Method
      5. info Method
      6. log Method
      7. setOptions Method
      8. trace Method
      9. warn Method
  6. JavascriptLogging Class
    1. Configure Method
    2. OnLogging Event
    3. RequestId Method
    4. SetJsnlogConfiguration Method
  7. Tag Helpers
    1. jl-javascript-logger-definitions