Package net.i2p.sam

Class SAMHandler

java.lang.Object

net.i2p.sam.SAMHandler

All Implemented Interfaces:

Runnable, Handler

Direct Known Subclasses:

SAMv1Handler

abstract class SAMHandler
extends Object
implements Runnable, Handler

Base class for SAM protocol handlers. It implements common methods, but is not able to actually parse the protocol itself: this task is delegated to subclasses.

Author:

human

Field Summary

Fields

Modifier and Type	Field	Description
protected Log	_log
protected SAMBridge	bridge
protected Properties	i2cpProps	I2CP options configuring the I2CP connection (port, host, numHops, etc)
protected SocketChannel	socket
protected boolean	stopHandler
protected Object	stopLock
protected I2PAppThread	thread
int	verMajor
int	verMinor

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SAMHandler(SocketChannel s, int verMajor, int verMinor, Properties i2cpProps, SAMBridge parent)	SAMHandler constructor (to be called by subclasses)

Method Summary

Modifier and Type	Method	Description
protected void	closeClientSocket()	Close the socket connected to the SAM client.
protected SocketChannel	getClientSocket()	Get the channel of the socket connected to the SAM client
protected Object	getWriteLock()	If you're crazy enough to write to the raw socket, grab the write lock with getWriteLock(), synchronize against it, and write to the getOut()
protected abstract void	handle()	Actually handle the SAM protocol.
void	run()	Register with the bridge, call handle(), unregister with the bridge.
protected boolean	shouldStop()	Should the handler be stopped?
void	startHandling()	Start handling the SAM connection, detaching an handling thread.
void	stopHandling()	Stop the SAM handler, close the client socket, unregister with the bridge.
String	toString()	Get a string describing the handler.
protected void	writeBytes(ByteBuffer data)	Write a byte array on the handler's socket.
protected boolean	writeString(String str)	Write a string to the handler's socket.
static boolean	writeString(String str, SocketChannel out)	Unsynchronized, use with caution

Methods inherited from class java.lang.Object

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

Field Detail

_log

protected final Log _log

thread

protected I2PAppThread thread

bridge

protected final SAMBridge bridge

socket

protected final SocketChannel socket

verMajor

public final int verMajor

verMinor

public final int verMinor

i2cpProps

protected final Properties i2cpProps

I2CP options configuring the I2CP connection (port, host, numHops, etc)

stopLock

protected final Object stopLock

stopHandler

protected boolean stopHandler

Constructor Detail

SAMHandler

protected SAMHandler(SocketChannel s,
                     int verMajor,
                     int verMinor,
                     Properties i2cpProps,
                     SAMBridge parent)
              throws IOException

SAMHandler constructor (to be called by subclasses)

Parameters:

s - Socket attached to a SAM client

verMajor - SAM major version to manage

verMinor - SAM minor version to manage

i2cpProps - properties to configure the I2CP connection (host, port, etc)

Throws:

IOException

Method Detail

startHandling

public final void startHandling()

Start handling the SAM connection, detaching an handling thread.

handle

protected abstract void handle()

Actually handle the SAM protocol.

getClientSocket

protected final SocketChannel getClientSocket()

Get the channel of the socket connected to the SAM client

Returns:

channel

writeBytes

protected final void writeBytes(ByteBuffer data)
                         throws IOException

Write a byte array on the handler's socket. This method must always be used when writing data, unless you really know what you're doing.

Parameters:

data - A byte array to be written

Throws:

IOException

getWriteLock

protected Object getWriteLock()

If you're crazy enough to write to the raw socket, grab the write lock with getWriteLock(), synchronize against it, and write to the getOut()

Returns:

socket Write lock object

writeString

protected final boolean writeString(String str)

Write a string to the handler's socket. This method must always be used when writing strings, unless you really know what you're doing.

Parameters:

str - A byte array to be written

Returns:

True if the string was successfully written, false otherwise

writeString

public static boolean writeString(String str,
                                  SocketChannel out)

Unsynchronized, use with caution

Returns:

success

closeClientSocket

protected final void closeClientSocket()
                                throws IOException

Close the socket connected to the SAM client.

Throws:

IOException

stopHandling

public void stopHandling()

Stop the SAM handler, close the client socket, unregister with the bridge.

Specified by:

stopHandling in interface Handler

shouldStop

protected final boolean shouldStop()

Should the handler be stopped?

Returns:

True if the handler should be stopped, false otherwise

toString

public final String toString()

Get a string describing the handler.

Overrides:

toString in class Object

Returns:

A String describing the handler;

run

public final void run()

Register with the bridge, call handle(), unregister with the bridge.

Specified by:

run in interface Runnable