(HTTP) and the HyperText Markup Language (HTML).
HTTP
The HyperText Transport Protocol is the method by which web browsers communicate
with a web server.
When you go to a page using a web browser, the browser sends a request to the server
hosting that page, saying what it wants. What the browser asks for may be simply the
contents of a page in HTML. The web server is always listening for such requests, and
when it receives one, it processes it. In this simple case, processing the request just means
sending back HTML that you have specified in the Arduino sketch.
HTML
The HyperText Markup Language is a way of adding formatting to ordinary text so that it
looks good when the browser displays it. For example, the following code is HTML that
displays on a browser page as shown in
Figure 10-2
:
The HTML contains tags. Tags have a start and an end and usually contain other tags.
The start of a tag has a
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