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Introduction to Fiddler

Introduction to Fiddler. March 9, 2007. Fiddler – What’s It Good For?. Diagnosing Web site issues. Analyzing Web site performance. Other uses. How Does it Work?. When Fiddler starts it registers itself as the system proxy. It becomes a transparent layer between the browser and server.

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Introduction to Fiddler

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  1. Introduction to Fiddler March 9, 2007

  2. Fiddler – What’s It Good For? • Diagnosing Web site issues. • Analyzing Web site performance. • Other uses.

  3. How Does it Work? • When Fiddler starts it registers itself as the system proxy. • It becomes a transparent layer between the browser and server.

  4. What Does that Mean?

  5. Getting Started • Download from http://www.fiddlertool.com/fiddler/version.asp • Turn Fiddler on/off • Tools  Fiddler • Verify status • Tools  Internet Options  Connections  LAN Setting  Advanced

  6. WinInet • WinINet enables applications to interact with Gopher, FTP, and HTTP protocols to access Internet resources.

  7. Let’s Look at Examples • www.olemiss.edu • secure.olemiss.edu • www.olemiss.edu/depts/HR/ • www.mcsr.olemiss.edu • Dial-up simulation

  8. Protocol Numbers • http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html • 200 – OK. • 304 – Not modified. • 404 – Not found.

  9. Simulate Dial-Up • Rules -> Performance -> Simulate Modem Speeds

  10. Learn More • Sandbox for Fiddler testing • http://www.bayden.com/sandbox/ • FiddlerScript Examples • http://www.enhanceie.com/Fiddler/dev/ScriptSamples.asp

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