WS-RM Demo
==========

This demo shows how WS-ReliableMessaging support in Apache CXF may be enabled.  

The client and server both apply the reliableMessaging feature to the bus.
This ensures installation of the WS-RM interceptors,
comprising logical interceptors (RMInInterceptor/RMOutInterceptor)
responsible for managing the reliability properties of the current message, and a
protocol interceptor (RMSoapInterceptor) responsible for encoding/decoding
these properties as SOAP Headers.

As WS-RM is dependent on WS-Addressing, the demo uses 
the same approach as the ws_addressing sample to enable this
functionality. However, you may notice that the WS-Addressing
namespace URI is different in this case (i.e.
http://schemas.xmlsoap.org/ws/2004/08/addressing as opposed to
http://www.w3.org/2005/08/addressing). This is because the WS-RM
specification is still based on an older version of WS-Addressing.

The logging feature is used to log the inbound and outbound
SOAP messages and display these to the console. Notice the usage of 
out-of-band RM protocol messages (CreateSequence and CreateSequenceResponse)
and the WS-RM headers in application-level messages (Sequence,
SequenceAcknowledgement, AckRequested etc.)  

Finally, the MessageLossSimulator interceptor is installed
on the client-side to simulate message loss by discarding every second
application level message. This simulated unreliability allows the retransmission
of unacknowledged messages to be observed.

This demo also illustrates usage of the decoupled HTTP transport, whereby
a separate server->client HTTP connection is used to deliver responses
to (application or RM protocol) requests and server side originated 
standalone acknowledgments.
The "partial response" referred to in the log output is the payload of
the HTTP 202 Accepted response sent on the back-channel of the original 
client->server connection. 

In all other respects this demo is based on the basic hello_world sample,
illustrating that WS-Addressing usage is independent of the application.
One notable addition to the familiar hello_world WSDL is the usage
of the <wsaw:UsingAddressing> extension element to indicate the
WS-Addressing support is enabled for the service endpoint.

Please review the README in the samples directory before continuing.


Prerequisite
------------

If your environment already includes cxf-manifest-incubator.jar on the CLASSPATH,
and the JDK and ant bin directories on the PATH, it is not necessary to
run the environment script described in the samples directory README.
If your environment is not properly configured, or if you are planning
on using wsdl2java, javac, and java to build and run the demos, you must
set the environment by running the script.


Building and running the demo using Ant
---------------------------------------

From the base directory of this sample (i.e., where this README file is
located), the Ant build.xml file can be used to build and run the demo. 
The server and client targets automatically build the demo.

Using either UNIX or Windows:

  ant server  (from one command line window)
  ant client  (from a second command line window)

On startup, the client makes a sequence of 4 oneway invocations.
The output of the logging interceptors will show that only the 1st and 3rd
reach their destination. Notice how after approximately 2 seconds the
messages that actually have arrived at the server will be acknowledged,
and how after approximately 4 seconds the client will resend the 2nd and 4th
application message. These will be acknowledged another 2 seconds
later so that there will be no further retransmissions from the client.

To remove the code generated from the WSDL file and the .class
files, run "ant clean".


Building the demo using wsdl2java and javac
-------------------------------------------

From the base directory of this sample (i.e., where this README file is
located) first create the target directory build/classes and then 
generate code from the WSDL file.


For UNIX:
  mkdir -p build/classes

  wsdl2java -d build/classes -compile ./wsdl/hello_world_rm.wsdl

For Windows:
  mkdir build\classes
    Must use back slashes.

  wsdl2java -d build\classes -compile .\wsdl\hello_world_rm.wsdl
    May use either forward or back slashes.

Now compile the provided client and server applications with the commands:

For UNIX:  
  
  export CLASSPATH=$CLASSPATH:$CXF_HOME/lib/celtix.jar:./build/classes
  javac -d build/classes src/demo/ws_rm/common/*.java
  javac -d build/classes src/demo/ws_rm/client/*.java
  javac -d build/classes src/demo/ws_rm/server/*.java

For Windows:
  set classpath=%classpath%;%CXF_HOME%\lib\celtix.jar;.\build\classes
  javac -d build\classes src\demo\ws_rm\common\*.java
  javac -d build\classes src\demo\ws_rm\client\*.java
  javac -d build\classes src\demo\ws_rm\server\*.java


Running the demo using java
---------------------------

From the base directory of this sample (i.e., where this README file is
located) run the commands, entered on a single command line:

For UNIX (must use forward slashes):
    java -Djava.util.logging.config.file=./logging.properties
         demo.ws_rm.server.Server &

    java -Djava.util.logging.config.file=./logging.properties
         demo.ws_rm.client.Client ./wsdl/hello_world_rm.wsdl

The server process starts in the background.

For Windows (may use either forward or back slashes):
  start 
    java -Djava.util.logging.config.file=.\logging.properties
         demo.ws_rm.server.Server

    java -Djava.util.logging.config.file=.\logging.properties
         demo.ws_rm.client.Client .\wsdl\hello_world_rm.wsdl

The server process starts in a new command window.

After running the client, terminate the server process.

To remove the code generated from the WSDL file and the .class
files, either delete the build directory and its contents or run:

  ant clean

