org.openorb.orb.iiop

Class IIOPTransport

java.lang.Object

org.openorb.orb.iiop.IIOPTransport

All Implemented Interfaces:

Transport

public class IIOPTransport
extends java.lang.Object
implements Transport

Interface for creating sockets.

Version:

$Revision: 1.18 $ $Date: 2004/11/17 15:26:08 $

Author:

Unknown

Constructor Summary

Constructors

Constructor and Description
IIOPTransport(java.net.InetAddress host, int port, Logger logger)
IIOPTransport(java.net.InetAddress host, int port, Logger logger, SocketFactory socketFactory) Constructor.
IIOPTransport(java.net.Socket sock, int serverPort, Logger logger) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected int	checkGIOPHeader(byte[] buf, int off) Check the IIOP header and return the length.
void	close() Close the connection this always succeeds.
protected java.net.Socket	createSocket(java.net.InetAddress host, int port) Open the socket to the specified host and port.
boolean	establishAssociation(Address addr) Check for applicability of channel for carrying messages for the specified address and setup any client transport binding.
protected java.lang.String	getConnString() This returns a string describing the connection endpoints.
protected java.net.Socket	getSocket() Return the socket.
boolean	isMessageError() Returns true if setMessageError has been called.
boolean	isOpen() Is is the transport open?
void	open() Open the connection.
protected void	read(byte[] buf, int off, int len) Read bytes into the array.
protected StorageBuffer	readBuffer(byte[] head, int off, int len, int total_len) Create a storage buffer from the passed buffer, reading extra bytes from the stream.
protected boolean	readMagic(int timeout, byte[] buf, int off) Reads four bytes from the input stream into the buffer at the specified offset.
StorageBuffer	recvMessage(int timeout) Read next message.
void	sendMessage(StorageBuffer msg) Write message to comms protocol.
void	setMessageError() If this gets called then the close operation will close by sending a MessageError message.
java.lang.String	toString() Print out socket information.
protected void	write(byte[] buf, int off, int len) Write bytes directly to socket.
protected void	writeCloseMessage() Send the close message.

Methods inherited from class java.lang.Object

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

Constructor Detail

IIOPTransport

public IIOPTransport(java.net.InetAddress host,
             int port,
             Logger logger)

IIOPTransport

public IIOPTransport(java.net.InetAddress host,
             int port,
             Logger logger,
             SocketFactory socketFactory)

Constructor.

Parameters:

host - Host of the endpoint.

port - Port of the endoint.

IIOPTransport

public IIOPTransport(java.net.Socket sock,
             int serverPort,
             Logger logger)

Constructor.

Parameters:

sock - Client socket.

serverPort - Port of the endoint.

logger - The logger to use in this instance.

Method Detail

open

public void open()

Open the connection. This can throw a CORBA system exception. This is never called by server channels.

Specified by:

open in interface Transport

createSocket

protected java.net.Socket createSocket(java.net.InetAddress host,
                           int port)
                                throws java.io.IOException

Open the socket to the specified host and port.

Throws:

java.io.IOException

getSocket

protected java.net.Socket getSocket()

Return the socket.

Returns:

The socket instance associated with this transport.

close

public void close()

Close the connection this always succeeds.

Specified by:

close in interface Transport

writeCloseMessage

protected void writeCloseMessage()

Send the close message.

isOpen

public boolean isOpen()

Is is the transport open?

Specified by:

isOpen in interface Transport

sendMessage

public void sendMessage(StorageBuffer msg)

Write message to comms protocol.

Specified by:

sendMessage in interface Transport

Parameters:

msg - The message to be sent.

Throws:

org.omg.CORBA.COMM_FAILURE - permanent transport failure occoured. Cleanup and then call close.

write

protected void write(byte[] buf,
         int off,
         int len)

Write bytes directly to socket. Not this function *is not* called for every write and is provided to allow arbitary data to be written to the socket.

Parameters:

buf - message buffer.

off - offset of beginning of message in buffer.

len - length of message in buffer.

Throws:

org.omg.CORBA.COMM_FAILURE - permanent transport failure occoured.

recvMessage

public StorageBuffer recvMessage(int timeout)
                          throws java.io.EOFException

Read next message. This function will be regularly serviced by a worker thread.

Specified by:

recvMessage in interface Transport

Parameters:

timeout - max time to wait before recieving a message.

Throws:

java.io.EOFException - end of file has been reached. Cleanup and call close.

org.omg.CORBA.COMM_FAILURE - permanent transport failure occoured. Cleanup and then call close.

setMessageError

public void setMessageError()

If this gets called then the close operation will close by sending a MessageError message.

isMessageError

public boolean isMessageError()

Returns true if setMessageError has been called.

readMagic

protected boolean readMagic(int timeout,
                byte[] buf,
                int off)
                     throws java.io.EOFException

Reads four bytes from the input stream into the buffer at the specified offset. Returns true if the read was successful before the timeout occoured.

Throws:

java.io.EOFException

checkGIOPHeader

protected int checkGIOPHeader(byte[] buf,
                  int off)
                       throws java.io.EOFException

Check the IIOP header and return the length.

Throws:

java.io.EOFException - If header is a CloseConnection message

org.omg.CORBA.COMM_FAILURE - If header is a MsgError message.

read

protected final void read(byte[] buf,
        int off,
        int len)

Read bytes into the array. Can be used but not overriden by subclasses.

readBuffer

protected StorageBuffer readBuffer(byte[] head,
                       int off,
                       int len,
                       int total_len)

Create a storage buffer from the passed buffer, reading extra bytes from the stream.

establishAssociation

public boolean establishAssociation(Address addr)

Check for applicability of channel for carrying messages for the specified address and setup any client transport binding.

Specified by:

establishAssociation in interface Transport

Parameters:

addr - the address.

Returns:

true if this transport can carry messages for the target. Basic checks like checking the host and port will already be done, just check specifics. If false a new channel will be opened for requests.

toString

public java.lang.String toString()

Print out socket information.

Overrides:

toString in class java.lang.Object

getConnString

protected java.lang.String getConnString()

This returns a string describing the connection endpoints.