Editing HTTP (section)

=== Client request ===
<syntaxhighlight lang="http">
GET / HTTP/1.1
Host: www.example.com
User-Agent: Mozilla/5.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate, br
Connection: keep-alive

</syntaxhighlight>

A client request (consisting in this case of the request line and a few headers that can be reduced to only the <code>"Host: hostname"</code> header) is followed by a blank line, so that the request ends with a double end of line, each in the form of a [[carriage return]] followed by a [[line feed]]. The <code>"Host: hostname"</code> header value distinguishes between various [[Domain Name System|DNS]] names sharing a single [[IP address]], allowing name-based [[virtual hosting]]. While optional in HTTP/1.0, it is mandatory in HTTP/1.1. (A "/" (slash) will usually fetch a [[Webserver directory index|/index.html]] file if there is one.)