This document is a presentation about Fiddler, a free HTTP/HTTPS debugging tool developed by Eric Lawrence and frequently used by developers, support teams, and SharePoint administrators. It provides capabilities for capturing, viewing, and manipulating web traffic, along with various features for filtering and exporting session data. Resources for further exploration of Fiddler's functionalities and community support are also included.

1. #SPSBE
How to fiddler with
SharePoint 2010
#SPSBE23
Penny Coventry

2. ABOUT ME
• Independent Consultant
• Author/Co-author 10 SharePoint Books
• Trainer
• Worked with SharePoint since 2001
• Based in UK, work Europe & US
• Microsoft MVP SharePoint Server
• Blogs/Web Site
• http://www.sharepointdesignerstepbystep.com/
• Twitter: @pjcov

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4. CONTENT
• What is it and how does it Work?
• Getting to Know Fiddler
• Traffic Import
• Summary
• Resources

5. WHAT IS FIDDLER?
IT’S JUST ONE OF THE TOOLS OF YOUR TRADE
• Developer • Log analysis
• SPMonitoredScope
• SPDiag
• Developer Dashboard
• Fx Cop (.NET Code Analysis) • ULSViewer
• SP Dispose Check • Performance Analyzer Logs
• IE Dev Toolbar (PAL)
• Profiling • IIS Log Parser
• Perfmon • Http roundtrip analysis
• SQL Profiler
• Fiddler
• Win DBG
• Netmon 3.4
• SQLIO Disk Subsystem
Benchmark Tool

6. BUT REALLY – WHAT IS IT?
• It’s Free
• First Released October 2003
• Developed by one man:
Microsoft employee: Eric Lawrence

7. WHAT DOES IT DO?
• Capture and view all HTTP and HTTPS
• “Fiddle” with incoming and outgoing data
• Modifies Page Requests and Responses
• Manipulates timing
• Decrypts HTTPS traffic

8. WHO USES FIDDLER?
• Microsoft engineers
• Support teams
• Lots of external web developers
(10K+ downloads per week)
• Security researchers
• SharePoint Admins
• …
• Some bad guys 

9. HOW DOES FIDDLER WORK?
Firewall
Firefox
CryptoAPI WinHTTP
Internet Company
WinINET Fiddler http://internet
Explorer Proxy
Office
SPD
2010
Source: Microsoft

10. DEMO
Getting to Know Fiddler
• A Quick Tour of Fiddler

11. SESSION ICONS

12. FILTERING HTTP TRAFFIC
• Application Type Filter - Toggle
• QuickExec box
• Process Filter
• Filters tab
• Find Sessions
• Rules

13. QUICKEXEC BOX
• Type commands:
• Cls
• ?sometext
• >40000
• =301
• =POST
http://www.fiddler2.com/fiddler/help/quickexec.asp
• Write Your Own – FiddlerScript
• neXpert Performance Tool
• Adds commands
• Generates HTML recommendations report

14. HELP WITH SHAREPOINT CAPTURES
• Kerberos
www.microsoft.com
/download/en/
details.aspx?id=23176

15. INFOPATH
• Darvish Shadravan:
blogs.msdn.com/b/shivajin/archive/2009/05/11/deep-dive-
on-infopath-request-and-response.aspx
ipfswebtest.codeplex.com/

16. Demo
Filters

17. DEBUGGING NON-WINDOWS CLIENTS
PC
MAC
Linux Fiddler http://internet
iPad
Windows
Phone
Source: Microsoft

18. WHAT ABOUT FIREFOX?
• Used to be a problem
• Reconfigure proxy settings every time you start and
stop Fiddler
• FiddlerHook pluggin for Firefox 3+
• Firefox proxy settings to
• Use system proxy
• Behaves like IE

19. DEMO
Remote Clients

20. EXPORT / IMPORT
• Import web traffic from other tools
• HTTP Archive JSON (.har)
• HTTP Archive XML (exported from IE9 Developer Tools Network Tab)
• Export formats
• Session Archive ZIP (SAZ)
• HTTP Archive JSON v1.1
• HTTP Archive JSON v1.2
• Visual Studio Web Test XML
• WCAT Load Test Script
• Raw Files
• Meddler Scripts (added in v2.3.5)
• HTML5 AppCache Manifests (added in v2.3.6)
• IE 9 -> Developer Tools -> Network tab
blogs.msdn.com/b/ie/archive/2010/04/22/ie9-developer-tools-network-tab.aspx
msdn.microsoft.com/en-us/library/gg130952(v=VS.85).aspx

21. SAZ FILES
• Specially formatted .zip files
• Stores HTTP(S) traffic for later use
• File -> Save
• QuickExec box: dump or Savesaz filename
• nExpert tab: Save Sessions w Report to Zip
• File -> Load Archive
• Can be Password-protected/Encrypted File -> Fiddler Options -> General
• FiddlerCap
• Used to troubleshoot website problems
• Lightweight version of Fiddler
• Non-technical user creates SAZ file
• Sends to Expert for Analysis

22. Demo
Traffic Export / Import

23. Fiddler application with Your application hosting
extensions FiddlerCore
Fiddler 2
Inspector2
Inspector2
ExecAction.exe
IFiddlerExtension
YourApp.exe
IFiddlerExtension
Fiddler ScriptEngine
Your FiddlerScript
FiddlerCore FiddlerCore
Xceed*.dll Makecert.exe Xceed*.dll Makecert.exe
Source: Microsoft

24. SUMMARY
• HTTP/HTTPS Debugger
• More than just traffic capture
• Runs as Proxy Server:
• Local Machine
• Remote Server
• Written in C#
• Free: www.fiddler2.com

25. RESOURCES
• MSDN blogs:
• blogs.msdn.com/b/fiddler/
• blogs.msdn.com/b/nexpert/
• Discussion group: groups.google.com/group/httpfiddler
• Twitter tag: #fiddler2
• Facebook: www.facebook.com/pages/Fiddler-Web-Debugger/214143918785
• Fiddler Book Table of Contents: https://groups.google.com/forum/m/#!topic/httpfiddler/0CKFAKYe88E
• Google groups forum: https://groups.google.com/forum/m/#!forum/httpfiddler
• Other Useful links:
• stackoverflow.com/questions/tagged/fiddler
• serverfault.com/search?q=fiddler
• www.eggheadcafe.com/searchform.aspx?search=fiddler
• HAR file to Page Speed
• www.stevesouders.com/blog/2010/05/01/har-to-page-speed/
• stevesouders.com/flint/
• neXpert Performance Analysis Plugin www.microsoft.com/download/en/search.aspx?q=nexpert

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