Packet analysis

Finding slow http responses

4 min read

One of the more practical, and yet fundamental uses of packet capture analysis in todays networks is examining HTTP flows to isolate problems with the protocol or underlying network interactions. If you’re writing a web application or trying to debug why a particular service is slow, filtering for and graphing http response times can give you an instant picture of overall performance and outliers. About HTTP response times The http response time is the delta time between when an http request is transmitted, and when the http response is transmitted. Keep reading

Capture challenges

Sharkfest Packet Capture Challenge Solution

2 min read

Thanks to all who participated in the packet capture challenge at Sharkfest 2012! We had a great time at Sharkfest! Here’s the solution, or scroll down to try the challenge yourself! The Solution Many folks showed us different approaches to this challenge. Here is one approach. Visit the HTTP Requests analysis tool for this capture and take a look at the Response Codes tab. https://www.cloudshark.org/analysis/61cdf49986bd/http_req The Response Codes graph shows a break down of traffic by HTTP Response code. Keep reading