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Bob’s packet traverses several intermediary servers, which direct his packet toward the correct physical/wired path, on to Alice’s server.His router stamps its own IP address on the packet as the “from” IP address, and sends it off across the Internet.
ONLINE WEBSCRAPER MAC
Bob’s local router receives all these 1’s and 0’s and interprets them as a packet, from Bob’s own MAC address, and destined for Alice’s IP address.
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The body contains his request for Alice’s server application. The header contains an immediate destination of his local router’s MAC address, with a final destination of Alice’s IP address.
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These bits form some information, containing a header and body. Bob’s computer sends along a stream of 1 and 0 bits, indicated by high and low voltages on a wire.When one machine wants to talk to another machine, something like the following exchange takes place: Bob uses a desktop computer, which is trying to connect to Alice’s server. To give you some idea of the infrastructure required to get information to your browser, let’s use the following example. However, web scraping requires stripping away some of this shroud of interface, not just at the browser level (how it interprets all of this HTML, CSS, and JavaScript), but occasionally at the level of the network connection. We don’t want to think about what, exactly, the network is doing every time we open a browser and go to , and, these days, we don’t have to. In fact, I would argue that it’s fantastic that computer interfaces have advanced to the point where most people who use the Internet don’t have the faintest idea about how it works. If you haven’t spent much time in networking, or network security, the mechanics of the Internet might seem a little mysterious.