how to set https header?

The HTTP_ prefix is generated by your web server as part of the CGI spec:

 

 

 

http://www.ietf.org/rfc/rfc3875

 

 

4.1.18. Protocol-Specific Meta-Variables

 

 

The server SHOULD set meta-variables specific to the protocol and

 

scheme for the request. Interpretation of protocol-specific

 

variables depends on the protocol version in SERVER_PROTOCOL. The

 

server MAY set a meta-variable with the name of the scheme to a

 

non-NULL value if the scheme is not the same as the protocol. The

 

presence of such a variable indicates to a script which scheme is

 

used by the request.

 

 

Meta-variables with names beginning with "HTTP_" contain values read

 

from the client request header fields, if the protocol used is HTTP.

 

The HTTP header field name is converted to upper case, has all

 

occurrences of "-" replaced with "_" and has "HTTP_" prepended to

 

give the meta-variable name. The header data can be presented as

 

sent by the client, or can be rewritten in ways which do not change

 

its semantics. If multiple header fields with the same field-name

 

are received then the server MUST rewrite them as a single value

 

having the same semantics. Similarly, a header field that spans

 

multiple lines MUST be merged onto a single line. The server MUST,

 

if necessary, change the representation of the data (for example, the

 

character set) to be appropriate for a CGI meta-variable.

 

 

The server is not required to create meta-variables for all the

 

header fields that it receives. In particular, it SHOULD remove any

 

header fields carrying authentication information, such as

 

'Authorization'; or that are available to the script in other

 

variables, such as 'Content-Length' and 'Content-Type'. The server

 

MAY remove header fields that relate solely to client-side

 

communication issues, such as 'Connection'.

 

 

 

 

Aaron