![]() ![]() This returns the same response as above with a response time of 195 ms. In this example, we’re using the filter syntax below to display only the responses that take greater than 100 ms. Now that we know where to view the response time, we’re able to create a filter based on that response time and only display HTTP responses that take more than, or less than a set time. In the screenshot below, we can see that the request took 195 ms. ![]() In that section, you will find the field with the elapsed time since the original request. Within the Packet Details window, expand the Hypertext Transfer Protocol section. To view this field, highlight the packet that contains the HTTP response. ![]() This analysis field shows us the response time per HTTP request. Part of that additional analysis is a field called ‘time since request’. Within the HTTP response packet, Wireshark is able to add additional information to assist in the analysis of the HTTP response stream. This indicates the requested action was successfully completed on the web server (see the pink highlight below). The data is transferred from the web server to the client, then sends an HTTP response of 200 OK. 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. Let’s take a look at what this looks like in Wireshark: The HTTP response time is calculated and displayed in the HTML dissector. Wireshark shows hosts as IP addresses, since after the package leaves its source computer, the only thing that is in the package is the IP, not the hostname. Click on the Start button to capture traffic via this interface. ![]() You'll want to capture traffic that goes through your ethernet driver. Once we’ve done that, we’ll walk through creating a filter to display HTTP response times that take longer than expected. GET Now you’re left with all of the GET requests for assets from the website. Open Wireshark Click on ' Capture > Interfaces '. Using the HTTP analysis tools built into Wireshark, we’ll calculate the time it took for the response to come back from the server. We’ll start by using Wireshark to open a network capture of a simple web request. In this post, we’ll use Wireshark to identify HTTP server response times. ![]()
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