Java Doc for DatagramSocketImpl.java in  » Apache-Harmony-Java-SE » java-package » java » net » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Apache Harmony Java SE » java package » java.net   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    java.net.DatagramSocketImpl DatagramSocketImpl abstract public class DatagramSocketImpl implements SocketOptions(Code) The abstract superclass of datagram & multicast socket implementations. Field Summary protected  FileDescriptor fd      protected  int localPort      Constructor Summary public   DatagramSocketImpl()      Constructs an unbound datagram socket implementation. Method Summary abstract protected  void bind(int port, InetAddress addr)      Bind the datagram socket to the nominated localhost/port. abstract protected  void close()      Close the socket. protected  void connect(InetAddress inetAddr, int port)      Connect the socket to the specified remote address and port. abstract protected  void create()      This method allocates the socket descriptor in the underlying operating system. protected  void disconnect()      Disconnect the socket from the remote address and port. protected  FileDescriptor getFileDescriptor()      Answer the FileDescriptor, which will be invalid if the socket is closed or not bound.  InetAddress getLocalAddress()      Answer the local address to which the socket is bound. protected  int getLocalPort()      Answer the local port. abstract public  Object getOption(int optID)      Answer the nominated socket option. abstract protected  byte getTTL()      Answer the time-to-live (TTL) for multicast packets sent on this socket. abstract protected  int getTimeToLive()      Answer the time-to-live (TTL) for multicast packets sent on this socket. abstract protected  void join(InetAddress addr)      Add this socket to the multicast group. abstract protected  void joinGroup(SocketAddress addr, NetworkInterface netInterface)      Add this socket to the multicast group. abstract protected  void leave(InetAddress addr)      Remove the socket from the multicast group. abstract protected  void leaveGroup(SocketAddress addr, NetworkInterface netInterface)      Remove the socket from the multicast group. abstract protected  int peek(InetAddress sender)      Peek at the incoming packet to this socket and answer the sender's address into sender. abstract protected  int peekData(DatagramPacket pack)      Receive data into the supplied datagram packet by peeking. abstract protected  void receive(DatagramPacket pack)      Receive data into the supplied datagram packet. abstract protected  void send(DatagramPacket pack)      Sends the supplied datagram packet. abstract public  void setOption(int optID, Object val)      Set the nominated socket option. abstract protected  void setTTL(byte ttl)      Set the time-to-live (TTL) for multicast packets sent on this socket. abstract protected  void setTimeToLive(int ttl)      Set the time-to-live (TTL) for multicast packets sent on this socket. Field Detail fd protected FileDescriptor fd(Code) localPort protected int localPort(Code) Constructor Detail DatagramSocketImpl public DatagramSocketImpl()(Code) Constructs an unbound datagram socket implementation. Method Detail bind abstract protected void bind(int port, InetAddress addr) throws SocketException(Code) Bind the datagram socket to the nominated localhost/port. Sockets must be bound prior to attempting to send or receive data. Parameters:   port - the port on the localhost to bind Parameters:   addr - the address on the multihomed localhost to bind exception:   SocketException - if an error occurred during bind, such as if the port wasalready bound close abstract protected void close()(Code) Close the socket. connect protected void connect(InetAddress inetAddr, int port) throws SocketException(Code) Connect the socket to the specified remote address and port. Parameters:   inetAddr - the remote address Parameters:   port - the remote port exception:   SocketException - possibly thrown, if the datagram socket cannot beconnected to the specified remote address and port create abstract protected void create() throws SocketException(Code) This method allocates the socket descriptor in the underlying operating system. disconnect protected void disconnect()(Code) Disconnect the socket from the remote address and port. getFileDescriptor protected FileDescriptor getFileDescriptor()(Code) Answer the FileDescriptor, which will be invalid if the socket is closed or not bound. FileDescriptor the socket file descriptor getLocalAddress InetAddress getLocalAddress()(Code) Answer the local address to which the socket is bound. InetAddress the local address to which the socket is bound. getLocalPort protected int getLocalPort()(Code) Answer the local port. If the socket was bound to any available port, as flagged by a localPort value of -1, query the IP stack. int the local port to which the socket is bound. getOption abstract public Object getOption(int optID) throws SocketException(Code) Answer the nominated socket option. Parameters:   optID - the socket option to retrieve Object the option value exception:   SocketException - thrown if an error occurs while accessing the option getTTL abstract protected byte getTTL() throws IOException(Code) Answer the time-to-live (TTL) for multicast packets sent on this socket. java.net.InetAddress throws:   IOException - The exception description. See Also:   DatagramSocketImpl.getTimeToLive() getTimeToLive abstract protected int getTimeToLive() throws IOException(Code) Answer the time-to-live (TTL) for multicast packets sent on this socket. int throws:   IOException - The exception description. join abstract protected void join(InetAddress addr) throws IOException(Code) Add this socket to the multicast group. A socket must join a group before data may be received. A socket may be a member of multiple groups but may join any group once. Parameters:   addr - the multicast group to be joined throws:   IOException - may be thrown while joining a group joinGroup abstract protected void joinGroup(SocketAddress addr, NetworkInterface netInterface) throws IOException(Code) Add this socket to the multicast group. A socket must join a group before data may be received. A socket may be a member of multiple groups but may join any group once. Parameters:   addr - the multicast group to be joined Parameters:   netInterface - the network interface on which the addresses should be dropped throws:   IOException - may be thrown while joining a group leave abstract protected void leave(InetAddress addr) throws IOException(Code) Remove the socket from the multicast group. Parameters:   addr - the multicast group to be left throws:   IOException - May be thrown while leaving the group leaveGroup abstract protected void leaveGroup(SocketAddress addr, NetworkInterface netInterface) throws IOException(Code) Remove the socket from the multicast group. Parameters:   addr - the multicast group to be left Parameters:   netInterface - the network interface on which the addresses should be dropped throws:   IOException - May be thrown while leaving the group peek abstract protected int peek(InetAddress sender) throws IOException(Code) Peek at the incoming packet to this socket and answer the sender's address into sender. The method will block until a packet is received or timeout expires and returns the sender's port. exception:   IOException - if a read error or timeout occurs peekData abstract protected int peekData(DatagramPacket pack) throws IOException(Code) Receive data into the supplied datagram packet by peeking. The data is not removed and will be received by another peekData() or receive() call. This call will block until either data is received or, if a timeout is set, the timeout expires. Parameters:   pack - the DatagramPacket used to store the data the port the packet was received from exception:   IOException - if an error occurs receive abstract protected void receive(DatagramPacket pack) throws IOException(Code) Receive data into the supplied datagram packet. This call will block until either data is received or, if a timeout is set, the timeout expires. If the timeout expires, the InterruptedIOException is thrown. exception:   IOException - if a read error or timeout occurs send abstract protected void send(DatagramPacket pack) throws IOException(Code) Sends the supplied datagram packet. The packet contains the destination host & port. Parameters:   pack - DatagramPacket to send exception:   IOException - if a write error occurs setOption abstract public void setOption(int optID, Object val) throws SocketException(Code) Set the nominated socket option. Parameters:   optID - the socket option to set Parameters:   val - the option value exception:   SocketException - thrown if an error occurs while setting the option setTTL abstract protected void setTTL(byte ttl) throws IOException(Code) Set the time-to-live (TTL) for multicast packets sent on this socket. Parameters:   ttl - the time-to-live, 0throws:   IOException - The exception thrown while setting the TTL See Also:   DatagramSocketImpl.setTimeToLive(int) setTimeToLive abstract protected void setTimeToLive(int ttl) throws IOException(Code) Set the time-to-live (TTL) for multicast packets sent on this socket. Parameters:   ttl - the time-to-live, 0throws:   IOException - The exception thrown while setting the TTL Methods inherited from java.lang.Object protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object object)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final public Class<? extends Object> getClass()(Code)(Java Doc) public int hashCode()(Code)(Java Doc) final public void notify()(Code)(Java Doc) final public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final public void wait(long millis, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait(long millis) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)