com.asdf.client
Class ConnectionHandler

java.lang.Object
  com.asdf.client.ConnectionHandler

All Implemented Interfaces:

java.lang.Runnable

public class ConnectionHandler
extends java.lang.Object
implements java.lang.Runnable

ConnectionHandler is a class which connects to the server, queues and sends messages to server. ConnectionHandler also receives messages from server and passes them to gameclients and lobbyclient running on client machine.

Nested Class Summary

static class

ConnectionHandler.State

Field Summary

boolean

running

Constructor Summary

ConnectionHandler(java.lang.String hostAddress, int port)
Constructor for ConnectionHandler.

Method Summary

void	breakConnection() Closes connection.
void	registerConnectionObserver(ClientStateObserver observer)
boolean	registerMessageHandler(MessageHandler handler) Game and lobby clients register their response handlers to ConnectionHandler if they want to receive messages from server.
void	run() Starts the ConnectionHandler.
void	runOnce() Runs ConnectionHandler once.
void	send(byte[] data) Queues data to be send to a server.
void	sendMessage(Message msg) Queues message to be send to server.
void	sendRaw(java.nio.ByteBuffer data) Queues data to be send to the server as it is.
boolean	unRegisterMessageHandler(MessageHandler handler) Removes a registered response handler.

Methods inherited from class java.lang.Object

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

Field Detail

running

public boolean running

Constructor Detail

ConnectionHandler

public ConnectionHandler(java.lang.String hostAddress,
                         int port)
                  throws java.io.IOException

Constructor for ConnectionHandler.

Parameters:

hostAddress - Servers ip address in dot notation for example 98.162.0.27

port - Servers port for example 8080

Throws:

java.io.IOException - if connection could not be established

Method Detail

registerConnectionObserver

public void registerConnectionObserver(ClientStateObserver observer)

Parameters:

observer -

registerMessageHandler

public boolean registerMessageHandler(MessageHandler handler)

Game and lobby clients register their response handlers to ConnectionHandler if they want to receive messages from server.

Parameters:

handler - Game or lobby clients message handler

Returns:

false if response handler is already registered

unRegisterMessageHandler

public boolean unRegisterMessageHandler(MessageHandler handler)

Removes a registered response handler.

Parameters:

handler - response handler to be unregistered

Returns:

false if response handler could not be found

sendMessage

public void sendMessage(Message msg)
                 throws java.io.IOException,
                        javax.xml.bind.JAXBException

Queues message to be send to server.

Parameters:

msg - message to be send

Throws:

java.io.IOException - If connection to server is lost.

javax.xml.bind.JAXBException - If message could not be translated to bytes. This means that the message did not match our message.xsd schema.

send

public void send(byte[] data)
          throws java.io.IOException

Queues data to be send to a server. Size of the data is sent as binary network byte order before the actual data.

Parameters:

data - data to be written

Throws:

java.io.IOException - If connection to server is lost.

sendRaw

public void sendRaw(java.nio.ByteBuffer data)
             throws java.io.IOException

Queues data to be send to the server as it is.

Parameters:

data - to be written

Throws:

java.io.IOException - If connection to server is lost.

See Also:

to send data with prepending size of the data

run

public void run()

Starts the ConnectionHandler.

Specified by:

run in interface java.lang.Runnable

runOnce

public void runOnce()

Runs ConnectionHandler once.

breakConnection

public void breakConnection()
                     throws java.io.IOException

Closes connection.

Throws:

java.io.IOException - if the connection was already closed