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Asked: 2026-05-20T10:24:06+00:00

I have some knowledge on my question but not exactly. What exactly programatically happening

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I have some knowledge on my question but not exactly. What exactly programatically happening after http request?

Scott Hanselman said in one of his blog posts:

Describe, in as much detail as you think is relevant, as deeply as you can, what happens when I type “cnn.com” into a browser and press “Go”.

My question is exactly this,

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  1. Editorial Team

    That’s like asking “describe how to perform a coronary bypass”. Yes, one can explain how, but one is better first studying medicine and learning about the basics, before starting with specific procedures. However, in bulletpoints:

    1. Your browser will want to know the IP address of cnn.com. It doesn’t do DNS lookups itself, but rather asks the operating system.
    2. Your browser will connect to that IP address on port 80
    3. Your browser will send a HTTP GET request
    4. The webserver will reply with statuscode 200 and the body contents
    5. Your browser will parse the HTML
    6. In the HTML, other resources (images, scripts, css-files…) might be included, which the browser will also fetch.
    7. After the browser is done, it will close the connection. If it doesn’t, the webserver will.
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