HTTP Host Header

By: Dusty Arlia
Published on Sunday, June 15, 2014, 11:23 PM
Last Updated on Saturday, July 11, 2015 at 2:34 PM
Total Updates: 2

The Host HTTP header holds the domain name of the web server (for virtual hosting) and the TCP port number on which the web server is listening. The port number may be omitted if the port is the standard port for the service requested. The Host header was made mandatory in HTTP version HTTP/1.1. Although domain names are specified as case-insensitive, it is not specified whether the contents of the Host field should be interpreted as case-insensitive. In practice, some implementations of virtual hosting interpret the contents of the Host field as case-sensitive.

Here is an example:

Host: whiterootmedia.com

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