################
Web Server Notes
################

:Author: Dimitry Dukhovny


.. contents::


Using Apache2 with SSL as a Proxy for an application service
============================================================


Your web server, **serverA**, stands in front of your app server, **serverB**.  It serves two distinct services as **URIone** and **URItwo**.

.. code-block:: apache
	:linenos:
	:caption:
		/etc/httpd/conf.d/020-ssl.conf or /etc/apache2/sites-available/020-ssl.conf

	# Make sure we use SSL/TLS...
	LoadModule ssl_module modules/mod_ssl.so
	# ...and listen on the expected port for HTTPS
	Listen 443
	<VirtualHost serverA:443>
		# Activate the features we will use
		RewriteEngine On
		SSLPRoxyEngine On
		SSLProxyCheckPeerCN Off
		# Starting in Apache 2.5...
		SSLProxyCheckPeerName Off
		ProxyRequests Off
		RequestHeader unset Accept-Encoding
		RequestHeader unset Authorization
		<Location /URIone>
 			RewriteRule ^/URIone$ /URIone/ [R]
 			ProxyPass https://serverB/URIone keepalive=on
 			ProxyPassReverse https://serverB/URIone
 			ProxyPassReverseCookieDomain serverB serverA
		</Location>
		<Location /URItwo>
			RewriteRule ^/URItwo$ /URItwo/ [R]
			ProxyPass https://serverB/URItwo keepalive=on
			ProxyPassReverse https://serverB/URItwo
			ProxyPassReverseCookieDomain serverB serverA
		</Location>
		# Text substitutions for generated links
		Substitute "s|http://serverB|https://serverA|n"
		Substitute "s|https://serverB|https://serverA|n"
		Substitute "s|https://serverB:443|https://serverA|n"
		# Deal with MSIE
		SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown
		# Log appropriately
		CustomLog logs/ssl_request_log "%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"
	</VirtualHost>


Receiving uploads with a web form using PERL CGI
================================================

This script is a hodgepodge of simple solutions from all over the Internet.  The original author is lost to time, but I suspect it was an early recipe from Rich "DrBacchus" Bowen's *Apache Cookbook*.

:download:`Download upload.cgi <code_samples/upload.cgi>`

.. literalinclude:: code_samples/upload.cgi
	:linenos:
	:caption: upload.cgi
	:language: perl