java/12 : jdk.sctp/com/sun/nio/sctp/SctpServerChannel.java

SctpServerChannel

https://openjdk.java.net/

GPLv2 + Classpath Exception

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.sun.nio.sctp;

import java.net.SocketAddress;
import java.net.InetAddress;
import java.io.IOException;
import java.util.Set;
import java.nio.channels.SelectionKey;
import java.nio.channels.spi.SelectorProvider;
import java.nio.channels.spi.AbstractSelectableChannel;

A selectable channel for message-oriented listening SCTP sockets.
 An SCTPServerChannel is created by invoking the open method of this class. A newly-created SCTP server channel is open but not yet bound. An attempt to invoke the accept method of an unbound channel will cause the NotYetBoundException to be thrown. An SCTP server channel can be bound by invoking one of the bind methods defined by this class. 
 Socket options are configured using the setOption method. SCTP server socket channels support the following options: 


  Socket options
  
  
    Option Name
    Description
  
  
  
  
     
                                         SCTP_INIT_MAXSTREAMS 
     The maximum number of streams requested by the local endpoint during
         association initialization 
  
  

 Additional (implementation specific) options may also be supported. The list of options supported is obtained by invoking the 
supportedOptions method. SCTP server channels are safe for use by multiple concurrent threads.
Since: 1.7/**
 * A selectable channel for message-oriented listening SCTP sockets.
 *
 * <p> An {@code SCTPServerChannel} is created by invoking the
 * {@link #open open} method of this class. A newly-created SCTP server
 * channel is open but not yet bound. An attempt to invoke the
 * {@link #accept accept} method of an unbound channel will cause the
 * {@link java.nio.channels.NotYetBoundException} to be thrown. An SCTP server
 * channel can be bound by invoking one of the
 * {@link #bind(java.net.SocketAddress,int) bind} methods defined by this class.
 *
 * <p> Socket options are configured using the
 * {@link #setOption(SctpSocketOption,Object) setOption} method. SCTP server socket
 * channels support the following options:
 * <blockquote>
 * <table class="striped">
 *   <caption style="display:none">Socket options</caption>
 *   <thead>
 *   <tr>
 *     <th scope="col">Option Name</th>
 *     <th scope="col">Description</th>
 *   </tr>
 *   </thead>
 *   <tbody>
 *   <tr>
 *     <th scope="row"> {@link SctpStandardSocketOptions#SCTP_INIT_MAXSTREAMS
 *                                          SCTP_INIT_MAXSTREAMS} </th>
 *     <td> The maximum number of streams requested by the local endpoint during
 *          association initialization </td>
 *   </tr>
 *   </tbody>
 * </table>
 * </blockquote>
 * Additional (implementation specific) options may also be supported. The list
 * of options supported is obtained by invoking the {@link #supportedOptions()
 * supportedOptions} method.
 *
 * <p>SCTP server channels are safe for use by multiple concurrent threads.
 *
 * @since 1.7
 */
public abstract class SctpServerChannel
    extends AbstractSelectableChannel
{
    Initializes a new instance of this class.
Params: provider – 
        The selector provider for this channel/**
     * Initializes a new instance of this class.
     *
     * @param  provider
     *         The selector provider for this channel
     */
    protected SctpServerChannel(SelectorProvider provider) {
        super(provider);
    }

    Opens an SCTP server channel.
 The new channel's socket is initially unbound; it must be bound to a specific address via one of its socket's bind methods before associations can be accepted. 
Throws: UnsupportedOperationException – 
         If the SCTP protocol is not supported
IOException – 
         If an I/O error occurs
Returns:  A new SCTP server channel/**
     * Opens an SCTP server channel.
     *
     * <P> The new channel's socket is initially unbound; it must be bound
     * to a specific address via one of its socket's {@link #bind bind}
     * methods before associations can be accepted.
     *
     * @return  A new SCTP server channel
     *
     * @throws  UnsupportedOperationException
     *          If the SCTP protocol is not supported
     *
     * @throws  IOException
     *          If an I/O error occurs
     */
    public static SctpServerChannel open() throws
        IOException {
        return new sun.nio.ch.sctp.SctpServerChannelImpl((SelectorProvider)null);
    }

    Accepts an association on this channel's socket.
 If this channel is in non-blocking mode then this method will immediately return null if there are no pending associations. Otherwise it will block indefinitely until a new association is available or an I/O error occurs. 
 The SCTPChannel returned by this method, if any, will be in blocking mode regardless of the blocking mode of this channel. 
 If a security manager has been installed then for each new association this method verifies that the address and port number of the assocaitions's remote peer are permitted by the security manager's checkAccept method. 
Throws: ClosedChannelException – 
         If this channel is closed
AsynchronousCloseException – 
         If another thread closes this channel
         while the accept operation is in progress
ClosedByInterruptException – 
         If another thread interrupts the current thread
         while the accept operation is in progress, thereby
         closing the channel and setting the current thread's
         interrupt status
NotYetBoundException – 
         If this channel's socket has not yet been bound
SecurityException – 
         If a security manager has been installed and it does not permit
         access to the remote peer of the new association
IOException – 
         If some other I/O error occurs
Returns:  The SCTP channel for the new association, or null if this channel is in non-blocking mode and no association is available to be accepted/**
     * Accepts an association on this channel's socket.
     *
     * <P> If this channel is in non-blocking mode then this method will
     * immediately return {@code null} if there are no pending associations.
     * Otherwise it will block indefinitely until a new association is
     * available or an I/O error occurs.
     *
     * <P> The {@code SCTPChannel} returned by this method, if any, will be in
     *  blocking mode regardless of the blocking mode of this channel.
     *
     * <P> If a security manager has been installed then for each new
     * association this method verifies that the address and port number of the
     * assocaitions's remote peer are permitted by the security manager's {@link
     * java.lang.SecurityManager#checkAccept(String,int) checkAccept} method.
     *
     * @return  The SCTP channel for the new association, or {@code null}
     *          if this channel is in non-blocking mode and no association is
     *          available to be accepted
     *
     * @throws  java.nio.channels.ClosedChannelException
     *          If this channel is closed
     *
     * @throws  java.nio.channels.AsynchronousCloseException
     *          If another thread closes this channel
     *          while the accept operation is in progress
     *
     * @throws  java.nio.channels.ClosedByInterruptException
     *          If another thread interrupts the current thread
     *          while the accept operation is in progress, thereby
     *          closing the channel and setting the current thread's
     *          interrupt status
     *
     * @throws  java.nio.channels.NotYetBoundException
     *          If this channel's socket has not yet been bound
     *
     * @throws  SecurityException
     *          If a security manager has been installed and it does not permit
     *          access to the remote peer of the new association
     *
     * @throws  IOException
     *          If some other I/O error occurs
     */
    public abstract SctpChannel accept() throws IOException;

    Binds the channel's socket to a local address and configures the socket
to listen for associations.
 This method works as if invoking it were equivalent to evaluating the
expression:
bind(local, 0);

Params: local –  The local address to bind the socket, or null to bind the socket to an automatically assigned socket address
Throws: ClosedChannelException – 
         If this channel is closed
AlreadyBoundException – 
         If this channel is already bound
UnsupportedAddressTypeException – 
         If the type of the given address is not supported
SecurityException –  If a security manager has been installed and its checkListen method denies the operation
IOException – 
         If some other I/O error occurs
Returns:  This channel/**
     * Binds the channel's socket to a local address and configures the socket
     * to listen for associations.
     *
     * <P> This method works as if invoking it were equivalent to evaluating the
     * expression:
     * <blockquote><pre>
     * bind(local, 0);
     * </pre></blockquote>
     *
     * @param  local
     *         The local address to bind the socket, or {@code null} to
     *         bind the socket to an automatically assigned socket address
     *
     * @return  This channel
     *
     * @throws  java.nio.channels.ClosedChannelException
     *          If this channel is closed
     *
     * @throws  java.nio.channels.AlreadyBoundException
     *          If this channel is already bound
     *
     * @throws  java.nio.channels.UnsupportedAddressTypeException
     *          If the type of the given address is not supported
     *
     * @throws  SecurityException
     *          If a security manager has been installed and its {@link
     *          java.lang.SecurityManager#checkListen(int) checkListen} method
     *          denies the operation
     *
     * @throws  IOException
     *          If some other I/O error occurs
     */
    public final SctpServerChannel bind(SocketAddress local)
        throws IOException {
        return bind(local, 0);
    }

    Binds the channel's socket to a local address and configures the socket
to listen for associations.
 This method is used to establish a relationship between the socket and the local address. Once a relationship is established then the socket remains bound until the channel is closed. This relationship may not necesssarily be with the address local as it may be removed by unbindAddress, but there will always be at least one local address bound to the channel's socket once an invocation of this method successfully completes. 
 Once the channel's socket has been successfully bound to a specific address, that is not automatically assigned, more addresses may be bound to it using bindAddress, or removed using unbindAddress. 
 The backlog parameter is the maximum number of pending associations on the socket. Its exact semantics are implementation specific. An implementation may impose an implementation specific maximum length or may choose to ignore the parameter. If the backlog parameter has the value 0, or a negative value, then an implementation specific default is used. 
Params: local –  The local address to bind the socket, or null to bind the socket to an automatically assigned socket address
backlog – 
        The maximum number of pending associations
Throws: ClosedChannelException – 
         If this channel is closed
AlreadyBoundException – 
         If this channel is already bound
UnsupportedAddressTypeException – 
         If the type of the given address is not supported
SecurityException –  If a security manager has been installed and its checkListen method denies the operation
IOException – 
         If some other I/O error occurs
Returns:  This channel/**
     * Binds the channel's socket to a local address and configures the socket
     * to listen for associations.
     *
     * <P> This method is used to establish a relationship between the socket
     * and the local address. Once a relationship is established then
     * the socket remains bound until the channel is closed. This relationship
     * may not necesssarily be with the address {@code local} as it may be
     * removed by {@link #unbindAddress unbindAddress}, but there will always be
     * at least one local address bound to the channel's socket once an
     * invocation of this method successfully completes.
     *
     * <P> Once the channel's socket has been successfully bound to a specific
     * address, that is not automatically assigned, more addresses
     * may be bound to it using {@link #bindAddress bindAddress}, or removed
     * using {@link #unbindAddress unbindAddress}.
     *
     * <P> The backlog parameter is the maximum number of pending associations
     * on the socket. Its exact semantics are implementation specific. An
     * implementation may impose an implementation specific maximum length or
     * may choose to ignore the parameter. If the backlog parameter has the
     * value {@code 0}, or a negative value, then an implementation specific
     * default is used.
     *
     * @param  local
     *         The local address to bind the socket, or {@code null} to
     *         bind the socket to an automatically assigned socket address
     *
     * @param  backlog
     *         The maximum number of pending associations
     *
     * @return  This channel
     *
     * @throws  java.nio.channels.ClosedChannelException
     *          If this channel is closed
     *
     * @throws  java.nio.channels.AlreadyBoundException
     *          If this channel is already bound
     *
     * @throws  java.nio.channels.UnsupportedAddressTypeException
     *          If the type of the given address is not supported
     *
     * @throws  SecurityException
     *          If a security manager has been installed and its {@link
     *          java.lang.SecurityManager#checkListen(int) checkListen} method
     *          denies the operation
     *
     * @throws  IOException
     *          If some other I/O error occurs
     */
    public abstract SctpServerChannel bind(SocketAddress local,
                                           int backlog)
        throws IOException;

    Adds the given address to the bound addresses for the channel's
socket.
 The given address must not be the wildcard address. The channel must be first bound using bind before invoking this method, otherwise NotYetBoundException is thrown. The bind method takes a SocketAddress as its argument which typically contains a port number as well as an address. Addresses subquently bound using this method are simply addresses as the SCTP port number remains the same for the lifetime of the channel. 
 New associations accepted after this method successfully completes
will be associated with the given address.
Params: address – 
        The address to add to the bound addresses for the socket
Throws: ClosedChannelException – 
         If this channel is closed
NotYetBoundException – 
         If this channel is not yet bound
AlreadyBoundException – 
         If this channel is already bound to the given address
IllegalArgumentException –  If address is null or the wildcard address
IOException – 
         If some other I/O error occurs
Returns:  This channel/**
     * Adds the given address to the bound addresses for the channel's
     * socket.
     *
     * <P> The given address must not be the {@link
     * java.net.InetAddress#isAnyLocalAddress wildcard} address.
     * The channel must be first bound using {@link #bind bind} before
     * invoking this method, otherwise {@link
     * java.nio.channels.NotYetBoundException} is thrown. The {@link #bind bind}
     * method takes a {@code SocketAddress} as its argument which typically
     * contains a port number as well as an address. Addresses subquently bound
     * using this method are simply addresses as the SCTP port number remains
     * the same for the lifetime of the channel.
     *
     * <P> New associations accepted after this method successfully completes
     * will be associated with the given address.
     *
     * @param  address
     *         The address to add to the bound addresses for the socket
     *
     * @return  This channel
     *
     * @throws  java.nio.channels.ClosedChannelException
     *          If this channel is closed
     *
     * @throws  java.nio.channels.NotYetBoundException
     *          If this channel is not yet bound
     *
     * @throws  java.nio.channels.AlreadyBoundException
     *          If this channel is already bound to the given address
     *
     * @throws  IllegalArgumentException
     *          If address is {@code null} or the {@link
     *          java.net.InetAddress#isAnyLocalAddress wildcard} address
     *
     * @throws  IOException
     *          If some other I/O error occurs
     */
    public abstract SctpServerChannel bindAddress(InetAddress address)
         throws IOException;

    Removes the given address from the bound addresses for the channel's
socket.
 The given address must not be the wildcard address. The channel must be first bound using bind before invoking this method, otherwise NotYetBoundException is thrown. If this method is invoked on a channel that does not have address as one of its bound addresses, or that has only one local address bound to it, then this method throws IllegalUnbindException. The initial address that the channel's socket is bound to using bind may be removed from the bound addresses for the channel's socket. 
 New associations accepted after this method successfully completes
will not be associated with the given address.
Params: address – 
        The address to remove from the bound addresses for the socket
Throws: ClosedChannelException – 
         If this channel is closed
NotYetBoundException – 
         If this channel is not yet bound
IllegalArgumentException –  If address is null or the wildcard address
IllegalUnbindException –  If the implementation does not support removing addresses from a listening socket, address is not bound to the channel's socket, or the channel has only one address bound to it
IOException – 
         If some other I/O error occurs
Returns:  This channel/**
     * Removes the given address from the bound addresses for the channel's
     * socket.
     *
     * <P> The given address must not be the {@link
     * java.net.InetAddress#isAnyLocalAddress wildcard} address.
     * The channel must be first bound using {@link #bind bind} before
     * invoking this method, otherwise
     * {@link java.nio.channels.NotYetBoundException} is thrown.
     * If this method is invoked on a channel that does not have
     * {@code address} as one of its bound addresses, or that has only one
     * local address bound to it, then this method throws {@link
     * IllegalUnbindException}.
     * The initial address that the channel's socket is bound to using
     * {@link #bind bind} may be removed from the bound addresses for the
     * channel's socket.
     *
     * <P> New associations accepted after this method successfully completes
     * will not be associated with the given address.
     *
     * @param  address
     *         The address to remove from the bound addresses for the socket
     *
     * @return  This channel
     *
     * @throws  java.nio.channels.ClosedChannelException
     *          If this channel is closed
     *
     * @throws  java.nio.channels.NotYetBoundException
     *          If this channel is not yet bound
     *
     * @throws  IllegalArgumentException
     *          If address is {@code null} or the {@link
     *          java.net.InetAddress#isAnyLocalAddress wildcard} address
     *
     * @throws  IllegalUnbindException
     *          If the implementation does not support removing addresses from a
     *          listening socket, {@code address} is not bound to the channel's
     *          socket, or the channel has only one address bound to it
     *
     * @throws  IOException
     *          If some other I/O error occurs
     */
    public abstract SctpServerChannel unbindAddress(InetAddress address)
         throws IOException;

    Returns all of the socket addresses to which this channel's socket is
bound.
Throws: ClosedChannelException – 
         If the channel is closed
IOException – 
         If an I/O error occurs
Returns:  All the socket addresses that this channel's socket is bound to, or an empty Set if the channel's socket is not bound/**
     * Returns all of the socket addresses to which this channel's socket is
     * bound.
     *
     * @return  All the socket addresses that this channel's socket is
     *          bound to, or an empty {@code Set} if the channel's socket is not
     *          bound
     *
     * @throws  java.nio.channels.ClosedChannelException
     *          If the channel is closed
     *
     * @throws  IOException
     *          If an I/O error occurs
     */
    public abstract Set<SocketAddress> getAllLocalAddresses()
        throws IOException;

    Returns the value of a socket option.
Params: name – 
         The socket option
Type parameters: <T> – 
         The type of the socket option value
Throws: UnsupportedOperationException – 
         If the socket option is not supported by this channel
ClosedChannelException – 
         If this channel is closed
IOException – 
         If an I/O error occurs
See Also: SctpStandardSocketOptions
Returns:  The value of the socket option. A value of null may be a valid value for some socket options./**
     * Returns the value of a socket option.
     *
     * @param   <T>
     *          The type of the socket option value
     *
     * @param   name
     *          The socket option
     *
     * @return  The value of the socket option. A value of {@code null} may be
     *          a valid value for some socket options.
     *
     * @throws  UnsupportedOperationException
     *          If the socket option is not supported by this channel
     *
     * @throws  java.nio.channels.ClosedChannelException
     *          If this channel is closed
     *
     * @throws  IOException
     *          If an I/O error occurs
     *
     * @see SctpStandardSocketOptions
     */
    public abstract <T> T getOption(SctpSocketOption<T> name) throws IOException;

    Sets the value of a socket option.
Params: name – 
         The socket option
value –  The value of the socket option. A value of null may be a valid value for some socket options.
Type parameters: <T> – 
         The type of the socket option value
Throws: UnsupportedOperationException – 
         If the socket option is not supported by this channel
IllegalArgumentException – 
         If the value is not a valid value for this socket option
ClosedChannelException – 
         If this channel is closed
IOException – 
         If an I/O error occurs
See Also: SctpStandardSocketOptions
Returns:  This channel/**
     * Sets the value of a socket option.
     *
     * @param   <T>
     *          The type of the socket option value
     *
     * @param   name
     *          The socket option
     *
     * @param   value
     *          The value of the socket option. A value of {@code null} may be
     *          a valid value for some socket options.
     *
     * @return  This channel
     *
     * @throws  UnsupportedOperationException
     *          If the socket option is not supported by this channel
     *
     * @throws  IllegalArgumentException
     *          If the value is not a valid value for this socket option
     *
     * @throws  java.nio.channels.ClosedChannelException
     *          If this channel is closed
     *
     * @throws  IOException
     *          If an I/O error occurs
     *
     * @see SctpStandardSocketOptions
     */
    public abstract <T> SctpServerChannel setOption(SctpSocketOption<T> name,
                                                    T value)
        throws IOException;

    Returns a set of the socket options supported by this channel.
 This method will continue to return the set of options even after the
channel has been closed.
Returns:  A set of the socket options supported by this channel/**
     * Returns a set of the socket options supported by this channel.
     *
     * <P> This method will continue to return the set of options even after the
     * channel has been closed.
     *
     * @return  A set of the socket options supported by this channel
     */
    public abstract Set<SctpSocketOption<?>> supportedOptions();

    Returns an operation set identifying this channel's supported
operations.
 SCTP server channels only support the accepting of new associations, so this method returns SelectionKey.OP_ACCEPT. 
Returns:  The valid-operation set/**
     * Returns an operation set identifying this channel's supported
     * operations.
     *
     * <P> SCTP server channels only support the accepting of new
     * associations, so this method returns
     * {@link java.nio.channels.SelectionKey#OP_ACCEPT}.
     *
     * @return  The valid-operation set
     */
    @Override
    public final int validOps() {
        return SelectionKey.OP_ACCEPT;
    }
}

Throws:	UnsupportedOperationException – If the SCTP protocol is not supported IOException – If an I/O error occurs
Returns:	A new SCTP server channel

Params:	local – The local address to bind the socket, or `null` to bind the socket to an automatically assigned socket address
Throws:	ClosedChannelException – If this channel is closed AlreadyBoundException – If this channel is already bound UnsupportedAddressTypeException – If the type of the given address is not supported SecurityException – If a security manager has been installed and its `checkListen` method denies the operation IOException – If some other I/O error occurs
Returns:	This channel

Params:	address – The address to add to the bound addresses for the socket
Throws:	ClosedChannelException – If this channel is closed NotYetBoundException – If this channel is not yet bound AlreadyBoundException – If this channel is already bound to the given address IllegalArgumentException – If address is `null` or the `wildcard` address IOException – If some other I/O error occurs
Returns:	This channel

Params:	address – The address to remove from the bound addresses for the socket
Throws:	ClosedChannelException – If this channel is closed NotYetBoundException – If this channel is not yet bound IllegalArgumentException – If address is `null` or the `wildcard` address IllegalUnbindException – If the implementation does not support removing addresses from a listening socket, `address` is not bound to the channel's socket, or the channel has only one address bound to it IOException – If some other I/O error occurs
Returns:	This channel

Throws:	ClosedChannelException – If the channel is closed IOException – If an I/O error occurs
Returns:	All the socket addresses that this channel's socket is bound to, or an empty `Set` if the channel's socket is not bound

Params:	name – The socket option
Type parameters:	<T> – The type of the socket option value
Throws:	UnsupportedOperationException – If the socket option is not supported by this channel ClosedChannelException – If this channel is closed IOException – If an I/O error occurs
See Also:	SctpStandardSocketOptions
Returns:	The value of the socket option. A value of `null` may be a valid value for some socket options.

Params:	name – The socket option value – The value of the socket option. A value of `null` may be a valid value for some socket options.
Type parameters:	<T> – The type of the socket option value
Throws:	UnsupportedOperationException – If the socket option is not supported by this channel IllegalArgumentException – If the value is not a valid value for this socket option ClosedChannelException – If this channel is closed IOException – If an I/O error occurs
See Also:	SctpStandardSocketOptions
Returns:	This channel

/

java/ 12/ jdk.sctp/com/sun/nio/sctp/SctpServerChannel.java