Package sunlabs.brazil.sunlabs
Class StunnelHandler
- java.lang.Object
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- sunlabs.brazil.sunlabs.StunnelHandler
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- All Implemented Interfaces:
Handler
public class StunnelHandler extends java.lang.Object implements Handler
Handler to enable proper interaction with a protocol conversion gateway, by rewriting "redirect" directives properly. For example, this handler may be used with stunnel (see stunnel.org), configured as an SSL gateway. enabling Brazil with an external ssl protocol stack. For example, the stunnel configuration[https] accept = 443 connect = 8080
Will allow "https" connections on the standard port ssl (443) to access a Brazil server on port 8080. When using Brazil in this configuration without this handler, since Brazil talks to the gateway via "http", it will issue redirects to "http", which is the wrong protocol. This template looks at the origin ip address, and if it matches, changes the server protocol for this request, resulting in the client redirecting back through the gateway properly.Properties:
- ssl
- The regexp to match client ip addresses that are coming from ssl gateways (such as stunnel).
- protocol
- The protocol to replace "http" with when redirection via a gateway (defaults to "https").
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Constructor Summary
Constructors Constructor Description StunnelHandler()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
init(Server server, java.lang.String prefix)
Initializes the handler.boolean
respond(Request request)
If we are coming from the machine which is designated as our ssl gateway, then we need to change the protocol to "https" and remap the default port.
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Method Detail
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init
public boolean init(Server server, java.lang.String prefix)
Description copied from interface:Handler
Initializes the handler.- Specified by:
init
in interfaceHandler
- Parameters:
server
- The HTTP server that created thisHandler
. TypicalHandler
s will useServer.props
to obtain run-time configuration information.prefix
- The handlers name. The string thisHandler
may prepend to all of the keys that it uses to extract configuration information fromServer.props
. This is set (by theServer
andChainHandler
) to help avoid configuration parameter namespace collisions.- Returns:
true
if thisHandler
initialized successfully,false
otherwise. Iffalse
is returned, thisHandler
should not be used.
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respond
public boolean respond(Request request) throws java.io.IOException
If we are coming from the machine which is designated as our ssl gateway, then we need to change the protocol to "https" and remap the default port.- Specified by:
respond
in interfaceHandler
- Parameters:
request
- TheRequest
object that represents the HTTP request.- Returns:
true
if the request was handled. A request was handled if a response was supplied to the client, typically by callingRequest.sendResponse()
orRequest.sendError
.- Throws:
java.io.IOException
- if there was an I/O error while sending the response to the client. Typically, in that case, theServer
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 aFileNotFoundException
due to not being able to open a file). In that case, theHandler
's duty is to turn thatIOException
into a HTTP response indicating, in this case, that a file could not be found.
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