June 2000
Beginner to intermediate
80 pages
2h 49m
English
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Client and Server Identification
Clients and servers can optionally identify themselves. Clients send
a User-agent header and servers sent the
Server header. Even though these headers are
optional, the protocol specification encourages their use. Some
benefits are:
Servers can respond with customized content for a particular client. Such customized content may work around a bug in a particular version of a browser, or may make use of advanced features in more modern browsers when possible.
Surveys and statistics collections of browser and server deployment.
Tracking of client or server software that violates the HTTP specification.
However, when a server identifies itself, there is some security
risk, given that a user now knows the type of server and may be able
to apply security exploits for a known vulnerability on a particular
version of the server software. In light of this, some web servers
are configured to not display the Server header.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.