gov.nist.javax.sip.stack

Class NIOHandler

java.lang.Object

gov.nist.javax.sip.stack.NIOHandler

public class NIOHandler
extends Object

Low level Input output to a socket. Caches TCP connections and takes care of re-connecting to the remote party if the other end drops the connection

Version:

1.2

Author:

Vladimir Ralev

Field Summary

Fields

Modifier and Type	Field and Description
protected HashMap<SocketChannel,NioTcpMessageChannel>	channelMap
protected SocketTimeoutAuditor	socketTimeoutAuditor

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	NIOHandler(SIPTransactionStack sipStack, NioTcpMessageProcessor messageProcessor)

Method Summary

Methods

Modifier and Type	Method and Description
void	closeAll() Close all the cached connections.
SocketChannel	createOrReuseSocket(InetAddress inetAddress, int port)
int	getCurrentChannelSize()
NioTcpMessageChannel	getMessageChannel(SocketChannel socketChannel)
protected SocketChannel	getSocket(String key)
protected static String	makeKey(InetAddress addr, int port)
protected static String	makeKey(String addr, int port)
void	putMessageChannel(SocketChannel socketChannel, NioTcpMessageChannel nioTcpMessageChannel)
protected void	putSocket(String key, SocketChannel sock) Thread safety delivered through keyedSemaphore.
void	removeMessageChannel(SocketChannel socketChannel)
protected void	removeSocket(SocketChannel channel) Searches matching socket in internal map, and then removes from internal structures.
SocketChannel	sendBytes(InetAddress senderAddress, InetAddress receiverAddress, int contactPort, String transport, byte[] bytes, boolean retry, NioTcpMessageChannel messageChannel) Send an array of bytes.
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

socketTimeoutAuditor

protected SocketTimeoutAuditor socketTimeoutAuditor

channelMap

protected HashMap<SocketChannel,NioTcpMessageChannel> channelMap

Constructor Detail

NIOHandler

protected NIOHandler(SIPTransactionStack sipStack,
          NioTcpMessageProcessor messageProcessor)

Method Detail

getMessageChannel

public NioTcpMessageChannel getMessageChannel(SocketChannel socketChannel)

putMessageChannel

public void putMessageChannel(SocketChannel socketChannel,
                     NioTcpMessageChannel nioTcpMessageChannel)

removeMessageChannel

public void removeMessageChannel(SocketChannel socketChannel)

getCurrentChannelSize

public int getCurrentChannelSize()

makeKey

protected static String makeKey(InetAddress addr,
             int port)

makeKey

protected static String makeKey(String addr,
             int port)

putSocket

protected void putSocket(String key,
             SocketChannel sock)

Thread safety delivered through keyedSemaphore.

Parameters:

key -

sock -

getSocket

protected SocketChannel getSocket(String key)

removeSocket

protected void removeSocket(SocketChannel channel)

Searches matching socket in internal map, and then removes from internal structures. This method is thread-safe by underlying concurrent Map impl. Even if more than one thread try to removeSocket concurrently, the code will be run safely with idempotence property. If last thread manages to locate the same map entries to remove than first thread, the map.remove will simply be ignored...

Parameters:

channel -

sendBytes

public SocketChannel sendBytes(InetAddress senderAddress,
                      InetAddress receiverAddress,
                      int contactPort,
                      String transport,
                      byte[] bytes,
                      boolean retry,
                      NioTcpMessageChannel messageChannel)
                        throws IOException

Send an array of bytes.

Parameters:

receiverAddress - -- inet address

contactPort - -- port to connect to.

transport - -- tcp or udp.

retry - -- retry to connect if the other end closed connection

Throws:

IOException - -- if there is an IO exception sending message.

closeAll

public void closeAll()

Close all the cached connections.

stop

public void stop()

createOrReuseSocket

public SocketChannel createOrReuseSocket(InetAddress inetAddress,
                                int port)
                                  throws IOException

Throws:

IOException