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JavaTM 2 Platform Std. Ed. v1.3 |
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java.lang.Object | +--java.net.DatagramSocketImpl
Abstract datagram and multicast socket implementation base class.
| Field Summary | |
protected FileDescriptor |
fd
The file descriptor object. |
protected int |
localPort
The local port number. |
| Fields inherited from interface java.net.SocketOptions |
IP_MULTICAST_IF, SO_BINDADDR, SO_KEEPALIVE, SO_LINGER, SO_RCVBUF, SO_REUSEADDR, SO_SNDBUF, SO_TIMEOUT, TCP_NODELAY |
| Constructor Summary | |
DatagramSocketImpl()
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| Method Summary | |
protected abstract void |
bind(int lport,
InetAddress laddr)
Binds a datagram socket to a local port and address. |
protected abstract void |
close()
Close the socket. |
protected abstract void |
create()
Creates a datagram socket. |
protected FileDescriptor |
getFileDescriptor()
Gets the datagram socket file descriptor. |
protected int |
getLocalPort()
Gets the local port. |
protected abstract int |
getTimeToLive()
Retrieve the TTL (time-to-live) option. |
protected abstract byte |
getTTL()
Deprecated. use getTimeToLive instead. |
protected abstract void |
join(InetAddress inetaddr)
Join the multicast group. |
protected abstract void |
leave(InetAddress inetaddr)
Leave the multicast group. |
protected abstract int |
peek(InetAddress i)
Peek at the packet to see who it is from. |
protected abstract void |
receive(DatagramPacket p)
Receive the datagram packet. |
protected abstract void |
send(DatagramPacket p)
Sends a datagram packet. |
protected abstract void |
setTimeToLive(int ttl)
Set the TTL (time-to-live) option. |
protected abstract void |
setTTL(byte ttl)
Deprecated. use setTimeToLive instead. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Methods inherited from interface java.net.SocketOptions |
getOption, setOption |
| Field Detail |
protected int localPort
protected FileDescriptor fd
| Constructor Detail |
public DatagramSocketImpl()
| Method Detail |
protected abstract void create()
throws SocketException
SocketException - if there is an error in the
underlying protocol, such as a TCP error.
protected abstract void bind(int lport,
InetAddress laddr)
throws SocketException
lport - the local portladdr - the local addressSocketException - if there is an error in the
underlying protocol, such as a TCP error.
protected abstract void send(DatagramPacket p)
throws IOException
p - the packet to be sent.IOException - if an I/O exception occurs while sending the
datagram packet.
protected abstract int peek(InetAddress i)
throws IOException
i - an InetAddress objectIOException - if an I/O exception occurs
protected abstract void receive(DatagramPacket p)
throws IOException
p - the Packet Received.IOException - if an I/O exception occurs
while receiving the datagram packet.
protected abstract void setTTL(byte ttl)
throws IOException
ttl - a byte specifying the TTL valueIOException - if an I/O exception occurs while setting
the time-to-live option.getTTL()
protected abstract byte getTTL()
throws IOException
IOException - if an I/O exception occurs
while retrieving the time-to-live optionsetTTL(byte)
protected abstract void setTimeToLive(int ttl)
throws IOException
ttl - an int specifying the time-to-live valueIOException - if an I/O exception occurs
while setting the time-to-live option.getTimeToLive()
protected abstract int getTimeToLive()
throws IOException
IOException - if an I/O exception occurs
while retrieving the time-to-live optionsetTimeToLive(int)
protected abstract void join(InetAddress inetaddr)
throws IOException
inetaddr - multicast address to join.IOException - if an I/O exception occurs
while joining the multicast group.
protected abstract void leave(InetAddress inetaddr)
throws IOException
inetaddr - multicast address to leave.IOException - if an I/O exception occurs
while leaving the multicast group.protected abstract void close()
protected int getLocalPort()
protected FileDescriptor getFileDescriptor()
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JavaTM 2 Platform Std. Ed. v1.3 |
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