org.epics.ca.impl

Class BroadcastTransport

java.lang.Object

org.epics.ca.impl.BroadcastTransport

All Implemented Interfaces:

ReactorHandler, Transport

public class BroadcastTransport
extends java.lang.Object
implements ReactorHandler, Transport

CA UDP transport implementation. It receives datagrams from BroadcastConnector registered repeater and sends broadcasts datagrams to given addresses.

Field Summary

Fields

Modifier and Type	Field and Description
protected ResponseHandlers.ResponseHandler	responseHandler Response handler.

Constructor Summary

Constructors

Constructor and Description
BroadcastTransport(ContextImpl context, ResponseHandlers.ResponseHandler responseHandler, java.nio.channels.DatagramChannel channel, java.net.InetSocketAddress connectAddress, java.net.InetSocketAddress[] broadcastAddresses)

Method Summary

Modifier and Type	Method and Description
java.nio.ByteBuffer	acquireSendBuffer(int requiredSize)
void	close() Close transport.
void	flush()
ContextImpl	getContext() Get context transport is living in.
short	getMinorRevision() Transport protocol minor revision.
int	getPriority()
java.net.InetSocketAddress	getRemoteAddress() Get remote address.
void	handleEvent(java.nio.channels.SelectionKey key) Handle IO event.
protected void	processRead() Process input (read) IO event.
protected void	processWrite() Process output (write) IO event.
void	releaseSendBuffer(boolean ignore, boolean flush)
void	send(java.nio.ByteBuffer buffer) Send a buffer through the transport.
void	send(java.nio.ByteBuffer buffer, java.net.InetSocketAddress address) Send a buffer through the transport immediately.

Methods inherited from class java.lang.Object

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

Field Detail

responseHandler

protected final ResponseHandlers.ResponseHandler responseHandler

Response handler.

Constructor Detail

BroadcastTransport

public BroadcastTransport(ContextImpl context,
                          ResponseHandlers.ResponseHandler responseHandler,
                          java.nio.channels.DatagramChannel channel,
                          java.net.InetSocketAddress connectAddress,
                          java.net.InetSocketAddress[] broadcastAddresses)

Parameters:

context - the context.

responseHandler - the response handler.

channel - the channel.

connectAddress - the connect address.

broadcastAddresses - array of broadcast addresses.

Method Detail

close

public void close()

Close transport.

handleEvent

public void handleEvent(java.nio.channels.SelectionKey key)

Handle IO event.

Specified by:

handleEvent in interface ReactorHandler

Parameters:

key - key to be processed.

processRead

protected void processRead()

Process input (read) IO event.

processWrite

protected void processWrite()

Process output (write) IO event.

send

public void send(java.nio.ByteBuffer buffer)

Send a buffer through the transport.

Parameters:

buffer - buffer to send.

send

public void send(java.nio.ByteBuffer buffer,
                 java.net.InetSocketAddress address)
          throws java.io.IOException

Send a buffer through the transport immediately.

Parameters:

buffer - buffer to send.

address - send address.

Throws:

java.io.IOException - if attempts to write to the channel fail.

getRemoteAddress

public java.net.InetSocketAddress getRemoteAddress()

Description copied from interface: Transport

Get remote address.

Specified by:

getRemoteAddress in interface Transport

Returns:

remote address.

getContext

public ContextImpl getContext()

Description copied from interface: Transport

Get context transport is living in.

Specified by:

getContext in interface Transport

Returns:

context transport is living in.

getMinorRevision

public short getMinorRevision()

Description copied from interface: Transport

Transport protocol minor revision.

Specified by:

getMinorRevision in interface Transport

Returns:

protocol minor revision.

getPriority

public int getPriority()

Specified by:

getPriority in interface Transport

acquireSendBuffer

public java.nio.ByteBuffer acquireSendBuffer(int requiredSize)

Specified by:

acquireSendBuffer in interface Transport

releaseSendBuffer

public void releaseSendBuffer(boolean ignore,
                              boolean flush)

Specified by:

releaseSendBuffer in interface Transport

flush

public void flush()

Specified by:

flush in interface Transport