Calculate HTTP Response Time in Wireshark

Calculate HTTP Response Time in Wireshark

In this post, we'll use Wireshark to identify HTTP server response times.  We'll start by using Wireshark to open a network capture of a simple web request. Using the HTTP analysis tools built into Wireshark, we'll calculate the time it took for the response to come back from the server.  Once we've done that, we'll walk through creating a filter to display HTTP response times that take longer than expected. Finding HTTP Response Time The HTTP response time is calculated and displayed in the HTML dissector.  In this example I made a request to http://i.imgur.com/OAEsnJh.jpg. Let's take a look at what this looks like in Wireshark: In this first screenshot, we establish the TCP connection with a three way handshake, then the browser requests the image with an HTTP GET request. The data is transferred from the web server to the client, then sends an HTTP response of 200 OK.  This indicates the requested action was successfully completed on the web server (see the pink highlight below). 45

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