Java Doc for GenericProxyHandler.java in  » Web-Server » Brazil » sunlabs » brazil » handler » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Server » Brazil » sunlabs.brazil.handler 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   sunlabs.brazil.handler.GenericProxyHandler

All known Subclasses:   sunlabs.brazil.handler.MultiProxyHandler,  sunlabs.brazil.handler.ProxyPropertiesHandler,
GenericProxyHandler
public class GenericProxyHandler implements Handler(Code)
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 acces to selected web sites.

Properties:

prefix
URL prefix must match
host
name of host site to proxy to.
port
Host port to proxy to (defaults to 80).
proxyHost
Which proxy host to use (if any) to contact "host".
proxyPort
The proxy's port (defaults to 80)

author:
   Stephen Uhler
version:
   1.29, 01/01/16


Field Summary
final public static  StringHOST
     Handler configuration property host.
final public static  StringNL
    
final public static  StringPORT
     Handler configuration property port.
final public static  StringPREFIX
     Handler configuration property prefix.
final public static  StringPROXY_HOST
     Handler configuration property proxyHost.
final public static  StringPROXY_PORT
     Handler configuration property proxyPort. The proxy port to use to get to the host.
protected  Stringhost
    
protected  intport
    
protected  Stringprefix
    
protected  StringproxyHost
    
protected  intproxyPort
    
protected  StringrequestPrefix
    
protected  StringurlPrefix
    


Method Summary
public  voidaddMap(MapPage mapper)
    
public  booleaninit(Server server, String prefix)
     Do one-time setup.
public  booleanisMine(Request request)
     See if this is one of my requests.
public  byte[]modifyContent(Request request, byte[] content)
     Rewrite the links in an html file so they resolve correctly in proxy mode.
public  booleanrespond(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.
protected  booleanshouldFilter(MimeHeaders headers)
     See if the content needs to be filtered.

Field Detail
HOST
final public static String HOST(Code)
Handler configuration property host. The actual host site to appear on our site (required)



NL
final public static String NL(Code)



PORT
final public static String PORT(Code)
Handler configuration property port. The actual port on the host site (defaults to 80).



PREFIX
final public static String PREFIX(Code)
Handler configuration property prefix. Only URL's that begin with this string are considered by this handler. The default is (/).



PROXY_HOST
final public static String PROXY_HOST(Code)
Handler configuration property proxyHost. The name of a proxy to use (if any) to get to the host.



PROXY_PORT
final public static String PROXY_PORT(Code)
Handler configuration property proxyPort. The proxy port to use to get to the host. defaults to 80.



host
protected String host(Code)



port
protected int port(Code)



prefix
protected String prefix(Code)



proxyHost
protected String proxyHost(Code)



proxyPort
protected int proxyPort(Code)



requestPrefix
protected String requestPrefix(Code)



urlPrefix
protected String urlPrefix(Code)





Method Detail
addMap
public void addMap(MapPage mapper)(Code)
for subclassing



init
public boolean init(Server server, String prefix)(Code)
Do one-time setup. get and process the handler properties. we can contact the server identified by the host parameter.



isMine
public boolean isMine(Request request)(Code)
See if this is one of my requests. This method can be overridden to do more sophisticated mappings.
Parameters:
  request - The standard request object



modifyContent
public byte[] modifyContent(Request request, byte[] content)(Code)
Rewrite the links in an html file so they resolve correctly in proxy mode.
Parameters:
  request - The original request to this "proxy"
Parameters:
  headers - The vector of mime headers for the proxy request true if the headers and content should be sent to the client, false otherwiseModifies "headers" as a side effect



respond
public boolean respond(Request request) throws IOException(Code)
If this is one of "our" url's, fetch the document from the destination server, and return it as if it was local.



shouldFilter
protected boolean shouldFilter(MimeHeaders headers)(Code)
See if the content needs to be filtered. Return "true" if "modifyContent" should be called
Parameters:
  headers - Vector of mime headers for data to proxy



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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