JavaGroups.JavaStack
Class Configurator

java.lang.Object
  |
  +--JavaGroups.JavaStack.Configurator

public class Configurator

extends java.lang.Object

The task if this class is to setup and configure the protocol stack. A string describing the desired setup, which is both the layering and the configuration of each layer, is given to the configurator which creates and configures the protocol stack and returns a reference to the top layer (Protocol).

Future functionality will include the capability to dynamically modify the layering of the protocol stack and the properties of each layer.

Inner Class Summary

class

Configurator.ProtocolConfiguration

Constructor Summary

Configurator()

Method Summary

Protocol	FindProtocol(Protocol prot_stack, java.lang.String name)
static void	main(java.lang.String[] args)
Protocol	SetupProtocolStack(java.lang.String configuration, ProtocolStack st) The configuration string has a number of entries, separated by a ':' (semi).
void	StartProtocolStack(Protocol bottom_prot)
void	StopProtocolStack(Protocol start_prot)

Methods inherited from class java.lang.Object

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

Constructor Detail

Configurator

public Configurator()

Method Detail

SetupProtocolStack

public Protocol SetupProtocolStack(java.lang.String configuration,
                                   ProtocolStack st)
                            throws java.lang.Exception

The configuration string has a number of entries, separated by a ':' (semi). Each entry consists of the name of the protocol, followed by an optional configuration of that protocol. The configuration is enclosed in parentheses, and contains entries which are name/value pairs connected with an assignment sign (=) and separated by a semicolon.

UDP(in_port=5555;out_port=4445):FRAG(frag_size=1024)

The first entry defines the bottommost layer, the string is parsed left to right and the protocol stack constructed bottom up. Example: the string "UDP(in_port=5555):FRAG(frag_size=32000):DEBUG" results is the following stack:

   
   -----------------------
  | DEBUG                 |
  |-----------------------|
  | FRAG frag_size=32000  |
  |-----------------------|
  | UDP in_port=32000     |
   -----------------------
 

StartProtocolStack

public void StartProtocolStack(Protocol bottom_prot)

StopProtocolStack

public void StopProtocolStack(Protocol start_prot)

FindProtocol

public Protocol FindProtocol(Protocol prot_stack,
                             java.lang.String name)

main

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