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Full Discussion: Http_host
Top Forums Shell Programming and Scripting Http_host Post 302118860 by cbkihong on Thursday 24th of May 2007 03:31:31 PM
Old 05-24-2007
You probably have mixed something up, if I did not misunderstand your question.

It's not HTTP_HOST that derives from a Perl env var. It's that CGI, or a similar mechanism, that exposes the HTTP/1.1 header "Host:" as the HTTP_HOST env var to the server process responsible for handling the request, which can probably be a Perl process, as specified in the CGI Specification, that writes "... the header lines received from the client, if any, are placed into the environment with the prefix HTTP_ followed by the header name. Any - characters in the header name are changed to _ characters.".

As for how the "Host" HTTP header is composed, it actually follows what the HTTP specification says about the header. To save space, you can read the specifics at http://www.w3.org/Protocols/rfc2616/....html#sec14.23.

Last edited by cbkihong; 05-24-2007 at 04:36 PM..
 

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apache(1M)                                                System Administration Commands                                                apache(1M)

NAME
apache - Apache hypertext transfer protocol server overview DESCRIPTION
apache consists of a main server daemon, loadable server modules, some additional support utilities, configuration files, and documenta- tion. FILES
The apache HTTPD server is integrated with Solaris. The following files specify the installation locations for apache: /etc/apache Contains server configuration files. A newly-installed server must be manually configured before use. Typically this involves copying httpd.conf-example to the httpd.conf file and making local configuration adjustments. /usr/apache/bin Contains the httpd executable as well as other utility programs. /usr/apache/htdocs Contains the Apache manual in HTML format. This documentation is accessible by way of a link on the server test page that gets installed upon fresh installation. /usr/apache/include Contains the Apache header files, which are needed for building various optional server extensions with apxs(8) /usr/apache/jserv Contains documention for the mod_jserv java servlet module. Documention can be read with a web browser using the url: file:/usr/apache/jserv/docs/index.html /usr/apache/libexec Contains loadable modules (DSOs) supplied with the server. Any modules which are added using apxs(8)are also copied into this directory. /usr/apache/man Contains man pages for the server, utility programs, and mod_perl. Add this directory to your MANPATH to read the Apache man pages. See NOTES. /usr/apache/perl5 Contains the modules and library files used by the mod_perl extension to Apache. /var/apache/cgi-bin Default location for the CGI scripts. This can be changed by altering the httpd.conf file and restarting the server. /var/apache/htdocs Default document root. This can be changed by altering the httpd.conf file and restarting the server. /var/apache/icons Icons used by the server. This normally shouldn't need to be changed. /var/apache/logs Contains server log files. The formats, names, and locations of the files in this directory can be altered by various configuration directives in the httpd.conf file. /var/apache/proxy Directory used to cache pages if the caching feature of mod_proxy is enabled in the httpd.conf file. The location of the cache can also be changed by changing the proxy configuration in the httpd.conf file. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWapchr | +-----------------------------+-----------------------------+ | |SUNWapchu | +-----------------------------+-----------------------------+ | |SUNWapchd | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) http://www.apache.org NOTES
In addition to the documentation and man pages included with Solaris, more information is available at http://www.apache.org The Apache man pages are provided with the programming modules. To view the manual pages for the Apache modules with the man command, add /usr/apache/man to the MANPATH environment variable. See man(1) for more information. Running catman(1M) on the Apache manual pages is not supported. SunOS 5.10 8 Aug 2000 apache(1M)
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