CGI getenv Parameters

Variable name	Describe
Content_Type	The value of this environment variable indicates the information that is passed to the MIME type. Currently, the environment variable content_type is generally:application/x-www-form-urlencoded, He says the data comes from HTML form.
Content_length	if the server and CGI How the program information is passed is POST , this environment variable even from the standard input STDIN The number of bytes of valid data that can be read in. This environment variable must be used when reading the input data.
Http_cookie	within the client Cookies content.
Http_user_agent	Provides customer browser information that contains a version number or other proprietary data.
Path_info	The value of this environment variable is represented immediately after the CGI additional path information after the program name. It often appears as a parameter to a CGI program.
Query_string	if the server and CGI How the program information is passed is GET , the value of this environment variable even if the information is passed. This information is followed by the CGI program name, with a question mark '? ' in between. separated.
Remote_addr	The value of this environment variable is the client that sent the request. IP address, such as the above 192.168.1.67 . This value is always present. And it is a unique identifier that Web clients need to provide to the Web Server, which can be used in a CGI program to distinguish between different Web Client.
Remote_host	The value of this environment variable contains the send CGI The host name of the requested client. If you do not support the query, you do not need to define this environment variable.
Request_method	provides the method that the script is called. For scripts that use the http/1.0 protocol, only get and POST make sense.
Script_filename	the full path of the CGI script
Script_name	the name of the CGI script
server_name	this is yours. WEB the host name, alias, or IP address.
Server_software	The value of this environment variable contains the call CGI of the program HTTP the name and version number of the server. For example, the value above is apache/2.2.14 (Unix)
COMSPEC	C:\WINDOWS\system32\cmd.exe
Document_root	d:/web_root/cgi
Gateway_interface	cgi/1.1
Http_accept	text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Http_accept_encoding	gzip, deflate, SDCH
Http_accept_language	zh-cn,zh;q=0.8,en-us;q=0.6,en;q=0.4
Http_connection	Keep-alive
Http_host	localhost:8080
Http_user_agent	mozilla/5.0 (Windows NT 5.1) applewebkit/537.36 (khtml, like Gecko) chrome/43.0.2357.134 safari/537.36
PATH	D:\setup\masm;d:\setup\gcc\bin;
Query_string
Remote_addr	127.0.0.1
Remote_port	1817
Request_method	GET
Request_uri	/index.cgi
Script_filename	d:/web_root/cgi/index.cgi
Script_name	/index.cgi
Server_addr	127.0.0.1
Server_admin	[No address given]
server_name	localhost
Server_port	8080
Server_protocol	http/1.1
Server_signature
Server_software	Apache/2.2.21 (WIN32)
Content_length	(NULL)

CGI getenv Parameters