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org.vrspace.util
Class Connection  

java.lang.Object
  java.util.Observable
      org.vrspace.util.Connection

All Implemented Interfaces:

java.lang.Runnable

Direct Known Subclasses:

BinaryConnection

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public class Connection

extends java.util.Observable

implements java.lang.Runnable

Default network connection to the server.

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Field Summary
protected  boolean	active           is it connected
protected  java.lang.String	host
protected  java.io.InputStream	in
protected  Queue	inQueue
protected  java.lang.String	login
protected  int	maxTries           max number of reconnect tries
protected  java.io.OutputStream	out
protected  Queue	outQueue
protected  java.lang.String	password
protected  int	port
protected  java.io.BufferedReader	reader
protected  boolean	reconnect           should it reconnect on error
protected  java.net.Socket	socket
static char	TERMINATOR           EOF mark
protected  int	tries           current tries, used by login & reconnect
protected  java.io.PrintWriter	writer

 

Fields inherited from class java.util.Observable

 

Constructor Summary

Connection()

Connection(java.lang.String host, int port, java.lang.String login, java.lang.String password)           Creates new Connection to host:port and loggs in as login with password

Connection(java.lang.String hostPort, java.lang.String login, java.lang.String password)           Creates new Connection to hostPort and loggs in as login with password, assuming that hostPort is "host:port" pair

 

Method Summary
void	addObserver(java.util.Observer o)           stop caching requests
void	close()           Closes the connection
java.lang.String	getHostName()           Returns the host name
int	getHostPort()           Return the host port
boolean	isActive()           Connection active?
void	login(java.lang.String host, int port, java.lang.String login, java.lang.String password)           Login to host:port as login with password
void	login(java.lang.String hostPort, java.lang.String login, java.lang.String password)           Login to hostPort ("host:port") as login with password
void	quit()           Waits for this connection to die (get closed by peer)
protected  java.lang.String	read()           Used to read one line from the network, called from run()
protected  void	reconnect(java.lang.Exception e)           Reconnect if connection throwed an exception
void	run()           Interface java.lang.Runnable - reading from network
void	send(java.lang.String s)           Sends one line to the server, calls write()
void	setMaxTries(int maxTries)           Set the maximum number of attempts
protected  void	write(java.lang.String s)           Used to write one line to network, called from send()

 

Methods inherited from class java.util.Observable

clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

 

Methods inherited from class java.lang.Object

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

 

Field Detail

socket

protected java.net.Socket socket

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in

protected java.io.InputStream in

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out

protected java.io.OutputStream out

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reader

protected java.io.BufferedReader reader

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writer

protected java.io.PrintWriter writer

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TERMINATOR

public static final char TERMINATOR

EOF mark

See Also:

Constant Field Values

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host

protected java.lang.String host

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port

protected int port

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login

protected java.lang.String login

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password

protected java.lang.String password

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active

protected boolean active

is it connected

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reconnect

protected boolean reconnect

should it reconnect on error

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tries

protected int tries

current tries, used by login & reconnect

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maxTries

protected int maxTries

max number of reconnect tries

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inQueue

protected Queue inQueue

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outQueue

protected Queue outQueue

Constructor Detail

Connection

public Connection()

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Connection

public Connection(java.lang.String host,
                  int port,
                  java.lang.String login,
                  java.lang.String password)
           throws ConnectionException

Creates new Connection to host:port and loggs in as login with password

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Connection

public Connection(java.lang.String hostPort,
                  java.lang.String login,
                  java.lang.String password)
           throws ConnectionException

Creates new Connection to hostPort and loggs in as login with password, assuming that hostPort is "host:port" pair

Method Detail

login

public void login(java.lang.String hostPort,
                  java.lang.String login,
                  java.lang.String password)
           throws ConnectionException

Login to hostPort ("host:port") as login with password

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login

public void login(java.lang.String host,
                  int port,
                  java.lang.String login,
                  java.lang.String password)
           throws ConnectionException

Login to host:port as login with password

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addObserver

public void addObserver(java.util.Observer o)

stop caching requests

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isActive

public boolean isActive()

Connection active?

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reconnect

protected void reconnect(java.lang.Exception e)

Reconnect if connection throwed an exception

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run

public void run()

Interface java.lang.Runnable - reading from network

Specified by:

run in interface java.lang.Runnable

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read

protected java.lang.String read()
                         throws java.io.IOException,
                                ConnectionException

Used to read one line from the network, called from run()

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write

protected void write(java.lang.String s)

Used to write one line to network, called from send()

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send

public void send(java.lang.String s)

Sends one line to the server, calls write()

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getHostName

public java.lang.String getHostName()

Returns the host name

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getHostPort

public int getHostPort()

Return the host port

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close

public void close()
           throws java.io.IOException

Closes the connection

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quit

public void quit()

Waits for this connection to die (get closed by peer)

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setMaxTries

public void setMaxTries(int maxTries)

Set the maximum number of attempts

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> vrspace >> [ util overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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