public class MultiProxyHandler extends GenericProxyHandler
The
GenericProxyHandler
rewrites all of the links in each wepage to point back to the local.
machine. Using this handler, if multiple virtual websites are configured,
then links in one site that point to other virtual web sites are
rewritten to point locally as well.
For example, suppose we have 2 MultiProxyhandlers A and B configured into the server as:
A.prefix=/foo/
A.host=www.foo.com
B.prefix=/bar/
B.host=www.bar.com.
/foo/bar/test.html will fetch
http://www.foo.com/bar/test.html. If the result is
an html page, then any links in that page that resolve to
www.foo.com/... will be rewritten to the local server
as /foo/..., and any links that points to
www.bar.com/... will be rewritten to
/bar/....| Modifier and Type | Field and Description |
|---|---|
static java.util.Hashtable |
proxies
Holds all proxy -> prefix mappings for this server.
|
host, HOST, mapper, NL, noErrorReturn, passHost, port, PORT, prefix, PREFIX, PROXY_HOST, PROXY_PORT, proxyHost, proxyPort, requestPrefix, tokens, urlPrefix| Constructor and Description |
|---|
MultiProxyHandler() |
| Modifier and Type | Method and Description |
|---|---|
boolean |
init(Server server,
java.lang.String prefix)
Initialize this handler.
|
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.
|
getMapper, isMine, modifyContent, shouldFilterpublic static java.util.Hashtable proxies
public boolean init(Server server, java.lang.String prefix)
init in interface Handlerinit in class GenericProxyHandlerserver - 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 java.io.IOException
GenericProxyHandlerrespond in interface Handlerrespond in class GenericProxyHandlerrequest - 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.java.io.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.