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2.2.1.8 User-Agent

The User-Agent header specifies the major and minor version number of the software product that is sending the HTTP request.

This header is defined only for use in requests sent to a server.

The syntax of the User-Agent header is defined as follows.

 major = 1*2DIGIT
 minor = 1*2DIGIT ["." 1*4DIGIT "." 1*4DIGIT]
 product = ; as defined in section 3.8 of [RFC2616]
 user-agent-data = "WMEncoder" "/" major "." minor
                   *( SP product )
 User-Agent= "User-Agent: " user-agent-data CRLF

Example: User-Agent: WMEncoder/11.0.5721.5145

Clients MUST assign the values of the major and minor ABNF syntax elements to one of the values in the table.

 Major

 Minor

9

 0

10

 0

11

 0

12

 0