The `SSL_*' variables are used to pass information about SSL or TLS,
including the cipher suite in use, and the status of client
authentication.
The `REDIRECT_*' variables are used to pass information about a failed
request to a CGI script run as an Apache `ErrorDocument' or similar.
"PATH_INFO",
"PATH_TRANSLATED",
"QUERY_STRING",
"PATH_INFO",
"PATH_TRANSLATED",
"QUERY_STRING",
"REMOTE_*",
"REQUEST_METHOD",
"REQUEST_URI",
"SCRIPT_*",
"SERVER_*",
"REMOTE_*",
"REQUEST_METHOD",
"REQUEST_URI",
"SCRIPT_*",
"SERVER_*",
"PATH_INFO",
"PATH_TRANSLATED",
"QUERY_STRING",
"PATH_INFO",
"PATH_TRANSLATED",
"QUERY_STRING",
+ "REDIRECT_HANDLER",
+ "REDIRECT_SCRIPT_URI",
+ "REDIRECT_SCRIPT_URL",
+ "REDIRECT_STATUS",
+ "REDIRECT_URL",
"REMOTE_ADDR",
"REMOTE_HOST",
"REMOTE_USER",
"REMOTE_ADDR",
"REMOTE_HOST",
"REMOTE_USER",
"SERVER_PROTOCOL",
"SERVER_SIGNATURE",
"SERVER_SOFTWARE",
"SERVER_PROTOCOL",
"SERVER_SIGNATURE",
"SERVER_SOFTWARE",
+ "SSL_CIPHER",
+ "SSL_CLIENT_S_DN",
+ "SSL_CLIENT_VERIFY",
+ "SSL_PROTOCOL",