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java.lang.Object | +--sunlabs.brazil.handler.GenericProxyHandler
Handler for implementing a virtual web site.
 This causes another web site to "appear" inside our document root.
 This classes is intended to be sub-classed, so some of the methods
 in this implementation don't do too much.
 All of the appropriate links in HTML documents on the virtual
 site are rewritten, so they appear to be local references.
 This can be used on a firewall in conjunction with
 AclSwitchHandler
 to provide authenticated access to selected web sites.
 
Properties:
[token].name and [token].value
		define a new http header.
 
| Field Summary | |
| static String | HOSTHandler configuration property host. | 
| static String | NL | 
| static String | PORTHandler configuration property port. | 
| static String | PREFIXHandler configuration property prefix. | 
| static String | PROXY_HOSTHandler configuration property proxyHost. | 
| static String | PROXY_PORTHandler configuration property proxyPort. | 
| Constructor Summary | |
| GenericProxyHandler() | |
| Method Summary | |
|  void | addMap(MapPage mapper)for subclassing | 
|  boolean | init(Server server,
     String prefix)Do one-time setup. | 
|  boolean | isMine(Request request)See if this is one of my requests. | 
|  byte[] | modifyContent(Request request,
              byte[] content)Rewrite the links in an html file so they resolve correctly in proxy mode. | 
|  boolean | respond(Request request)If this is one of "our" url's, fetch the document from the destination server, and return it as if it was local. | 
| Methods inherited from class java.lang.Object | 
| equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | 
| Field Detail | 
public static final String PREFIX
public static final String HOST
public static final String PORT
public static final String PROXY_HOST
public static final String PROXY_PORT
public static final String NL
| Constructor Detail | 
public GenericProxyHandler()
| Method Detail | 
public boolean init(Server server,
                    String prefix)
init in interface Handlerserver - The HTTP server that created this Handler.
		Typical Handlers will use Server.props
		to obtain run-time configuration information.prefix - The handlers name.
		The string this Handler may prepend to all
		of the keys that it uses to extract configuration information
		from Server.props.  This is set (by the Server
		and ChainHandler) to help avoid configuration parameter
		namespace collisions.
true if this Handler initialized
		successfully, false otherwise.  If
		false is returned, this Handler
		should not be used.
public boolean respond(Request request)
                throws IOException
respond in interface Handlerrequest - The Request object that represents the HTTP
		request.
true if the request was handled.  A request was
		handled if a response was supplied to the client, typically
		by calling Request.sendResponse() or
		Request.sendError.
IOException - if there was an I/O error while sending the response to
		the client.  Typically, in that case, the Server
		will (try to) send an error message to the client and then
		close the client's connection.
		
		The IOException should not be used to silently
		ignore problems such as being unable to access some
		server-side resource (for example getting a
		FileNotFoundException due to not being able
		to open a file).  In that case, the Handler's
		duty is to turn that IOException into a
		HTTP response indicating, in this case, that a file could
		not be found.
public boolean isMine(Request request)
request - The standard request object
public byte[] modifyContent(Request request,
                            byte[] content)
request - The original request to this "proxy"
public void addMap(MapPage mapper)
| 
 | Version 2.1, Generated 12/30/04 Copyright (c) 2001-2004, Sun Microsystems. | ||||||||
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