A selectable channel for stream-oriented listening sockets.
A server-socket channel is created by invoking the
method of this class. It is not possible to create a channel for an arbitrary,
ServerSocket. A newly-created server-socket channel is
open but not yet bound. An attempt to invoke the
method of an unbound server-socket channel will cause a
to be thrown. A server-socket channel can be bound by invoking one of the
bind methods defined by this class.
Socket options are configured using the
setOption method. Server-socket channels support the following options:
Additional (implementation specific) options may also be supported.
Server-socket channels are safe for use by multiple concurrent threads.
ServerSocketChannel (SelectorProvider provider)
Initializes a new instance of this class.
SocketChannel accept ()
Accepts a connection made to this channel's socket.
If this channel is in non-blocking mode then this method will
immediately return null if there are no pending connections.
Otherwise it will block indefinitely until a new connection is available
or an I/O error occurs.
The socket channel returned by this method, if any, will be in
blocking mode regardless of the blocking mode of this channel.
This method performs exactly the same security checks as the
accept method of the
ServerSocket class. That is, if a security manager has been
installed then for each new connection this method verifies that the
address and port number of the connection's remote endpoint are
permitted by the security manager's
|The socket channel for the new connection,
or null if this channel is in non-blocking mode
and no connection is available to be accepted
ServerSocketChannel bind (SocketAddress local,
Binds the channel's socket to a local address and configures the socket to
listen for connections.
This method is used to establish an association between the socket and
a local address. Once an association is established then the socket remains
bound until the channel is closed.
backlog parameter is the maximum number of pending
connections on the socket. Its exact semantics are implementation specific.
In particular, an implementation may impose a maximum length or may choose
to ignore the parameter altogther. If the
backlog parameter has
0, or a negative value, then an implementation specific
default is used.
The address to bind the socket, or
null to bind to an
automatically assigned socket address
The maximum number of pending connections
ServerSocketChannel bind (SocketAddress local)
Binds the channel's socket to a local address and configures the socket
to listen for connections.
An invocation of this method is equivalent to the following:
The local address to bind the socket, or
null to bind
to an automatically assigned socket address
ServerSocketChannel open ()
Opens a server-socket channel.
The new channel is created by invoking the
openServerSocketChannel method of the system-wide default
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
connections can be accepted.
ServerSocketChannel setOption (SocketOption<T> name,
Sets the value of a socket option.
The socket option
The value of the socket option. A value of
null may be
a valid value for some socket options.
ServerSocket socket ()
Retrieves a server socket associated with this channel.
The returned object will not declare any public methods that are not
declared in the
|A server socket associated with this channel
int validOps ()
Returns an operation set identifying this channel's supported
Server-socket channels only support the accepting of new
connections, so this method returns
|The valid-operation set