com.realtime.xmpp.examples
Class EchoComponent

java.lang.Object
  |
  +--com.realtime.xmpp.util.RestartingEndpoint
        |
        +--com.realtime.xmpp.dom.DomComponent
              |
              +--com.realtime.xmpp.dom.DomAcceptComponent
                    |
                    +--com.realtime.xmpp.examples.EchoComponent

All Implemented Interfaces:

DomPacketListener, XmppEndpoint

public class EchoComponent

extends DomAcceptComponent

implements DomPacketListener

This is the standard EchoComponent to demonstrate communications with the Jabber server. This component echoes incoming packets back to jabber.

For now, it only works with <message> and <iq> packets. All other packets are dropped.

Message packets simply have their 'to' and 'from' fields reversed. Iq packets have their sub-elements removed, and then replaced by a single <error> element.

All status messages and errors are sent to the console.

Version:

1.0 Copyright © 2002 Real Time Entertainment Group, LLC - All rights reserved.

Author:

Mike Prince

Nested Class Summary

Nested classes inherited from class com.realtime.xmpp.dom.DomAcceptComponent

DomAcceptComponent.AuthenticationManager

Field Summary

protected static java.lang.String

USAGE Command line help string.

Fields inherited from class com.realtime.xmpp.dom.DomAcceptComponent

m_authenticationMonitor, m_bAuthenticated, m_sSecret

Fields inherited from class com.realtime.xmpp.dom.DomComponent

m_transformer

Fields inherited from class com.realtime.xmpp.util.RestartingEndpoint

m_session, m_sessionRestarter, XMPP_REQUEST_TIMEOUT

Constructor Summary

EchoComponent(java.lang.String sHost, int nPort, java.lang.String sSecret)
Create an ACCEPT namespaced component that generates DOM packets from incoming messages.

Method Summary

void	incomingPacket(org.dom4j.Element request) Echo the incoming packet back to jabber.
static void	main(java.lang.String[] argv) Command line testing.

Methods inherited from class com.realtime.xmpp.dom.DomAcceptComponent

init, start, waitForAuthentication

Methods inherited from class com.realtime.xmpp.dom.DomComponent

getDomTransformer, query, send

Methods inherited from class com.realtime.xmpp.util.RestartingEndpoint

fastStart, getComponentName, getSession, stop

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

USAGE

protected static final java.lang.String USAGE

Command line help string.

See Also:

Constant Field Values

Constructor Detail

EchoComponent

public EchoComponent(java.lang.String sHost,
                     int nPort,
                     java.lang.String sSecret)
              throws java.security.NoSuchAlgorithmException

Create an ACCEPT namespaced component that generates DOM packets from incoming messages. Uses the secret to handshake with the Jabber server.

Parameters:

sHost - The host name to connect to.

nPort - The server port to connect to.

sSecret - The secret to validate us with the Jabber server.

Throws:

java.security.NoSuchAlgorithmException - Generated when the SHA1 digest is unavailable.

Method Detail

incomingPacket

public void incomingPacket(org.dom4j.Element request)

Echo the incoming packet back to jabber.

For now, only work with message and iq packets. All other packets are dropped.

Message packets simply have their 'to' and 'from' fields reversed. Iq packets have their sub-elements removed, and replaced by a single error element.

Status messages are sent to the console.

Specified by:

incomingPacket in interface DomPacketListener

Parameters:

request - The XMPP packet as a DOM element.

main

public static void main(java.lang.String[] argv)

Command line testing. If there are no arguments, a help prompt will be generated.

Parameters:

argv - Command line arguments. At least one argument, the secret, is required. The second, and optional, argument is the host name as a DNS resolvable server name. The third parameter is used as the port number to connect to on the host.