org.amega.vnet.server
Class ProxyServer

java.lang.Object
  |
  +--org.amega.vnet.server.ProxyServer

public class ProxyServer

extends java.lang.Object

implements Server, ConnectionStateListener

This class implements the 'proxy' server component of the VNet server. The 'proxy' server let users create pseudo-direct Connections between each other. Both users have a Connection with the 'proxy' server but all data is forwarded in such a way that it looks to the users that they have a direct Connection.

Constructor Summary

ProxyServer()

Method Summary

Lookup	getProxyLookup() Returns a reference to the internal Lookup object used to keep track of proxy Connections.
void	handleConnect(Connection conn, Message msg) This method is called by the ServerControl whenever someone tries to log into (use) this server component.
void	handleConnectProxy(Connection conn, Message msg) Connect to a proxy Connection that is listening.
void	handleCreateProxy(Connection conn, Message msg) Create a proxy Connection listening for a Connection from a target user.
boolean	initServer(ENV env) Init this server component.
void	stateChanged(ConnectionStateEvent evt) Handle proxy disconnect.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProxyServer

public ProxyServer()

Method Detail

initServer

public boolean initServer(ENV env)

Description copied from interface: Server

Init this server component. The ENV instance given defines the environment of the parent ServerControl instance. Should return false if the server component failed to initialize.

Specified by:

initServer in interface Server

getProxyLookup

public Lookup getProxyLookup()

Returns a reference to the internal Lookup object used to keep track of proxy Connections. This method should only be used by GUI and the like to register for update events and query for runtime data. Consider the returned Lookup as read only.

handleConnect

public void handleConnect(Connection conn,
                          Message msg)
                   throws java.io.IOException

Description copied from interface: Server

This method is called by the ServerControl whenever someone tries to log into (use) this server component. 'msg' is the first Message sent by the client. 'conn' is the Connection with the client. Note that it is the responsibility of the server component to authenticate the user (if needed) and to send a response to the first message sent by the user. This will typically be a 'you logged in' or 'something went wrong' message. The handleConnect method is allowed to throw an IOException if an error related to communication with the client ocurred. If this happens the Connection will be closed by the ServerControl object calling the handleConnect method. If an IOException was not thrown, closing the Connection is the responsibility of the Server.

Specified by:

handleConnect in interface Server

handleCreateProxy

public void handleCreateProxy(Connection conn,
                              Message msg)
                       throws java.io.IOException

Create a proxy Connection listening for a Connection from a target user.

handleConnectProxy

public void handleConnectProxy(Connection conn,
                               Message msg)
                        throws java.io.IOException

Connect to a proxy Connection that is listening.

stateChanged

public void stateChanged(ConnectionStateEvent evt)

Handle proxy disconnect. Only CONNECTION_CLOSED events should ever be delivered to this method. The handleConnect method register this object as listener to all proxy Connections. When a proxy Connection is closed, this method is called and the proxy is removed from the runtime DB.

Specified by:

stateChanged in interface ConnectionStateListener