HTTP headers are strings in an HTTP message containing a colon followed by the distinguished name-value pair. Header format is a common format of ARPA Network messages text headers. Headers should be separated from the body of at least one blank line.

To read the response from the server, type the address of your site form or page, and then look at.

All titles are divided into four main groups:

Headers-GM must be included in any email client and server:
Request Headers are used only in client queries.
Response Headers are only for replies from the server.
The Entity Headers — accompanied each entity reports.