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What happens when you click on submit button

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HTTP over TCP/IP Suite
Maybe someone asks you about what happens when you click on submit button in a web browser. That question is in fact a very recurrent question in interviews for Software Engineers, Web Developers and so on. I  really suggest you take a look at RFC specifications.

Before you deep dive into RFCs (Internet Protocol, IP (1981)  - RFC 791; Transfer Control Protocol, TCP - RFC 793; and Hyper Text Transfer Protocol 1.1, HTTP/1.1 - Roy Fielding et al, RFC 2616) I advise you to look at some links before (yeah, it is a hard way to the top if you wanna rock'n'roll):

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