Package | Description |
---|---|
java.net |
Provides the classes for implementing networking applications.
|
Modifier and Type | Class and Description |
---|---|
class |
BindException
Signals that an error occurred while attempting to bind a
socket to a local address and port.
|
class |
ConnectException
Signals that an error occurred while attempting to connect a
socket to a remote address and port.
|
class |
NoRouteToHostException
Signals that an error occurred while attempting to connect a
socket to a remote address and port.
|
class |
PortUnreachableException
Signals that an ICMP Port Unreachable message has been
received on a connected datagram.
|
Modifier and Type | Method and Description |
---|---|
protected abstract void |
DatagramSocketImpl.bind (int lport,
InetAddress laddr)
Binds a datagram socket to a local port and address.
|
void |
DatagramSocket.bind (SocketAddress addr)
Binds this DatagramSocket to a specific address & port.
|
protected void |
DatagramSocketImpl.connect (InetAddress address,
int port)
Connects a datagram socket to a remote destination.
|
void |
DatagramSocket.connect (SocketAddress addr)
Connects this socket to a remote socket address (IP address + port number).
|
protected abstract void |
DatagramSocketImpl.create ()
Creates a datagram socket.
|
boolean |
DatagramSocket.getBroadcast ()
Tests if SO_BROADCAST is enabled.
|
static NetworkInterface |
NetworkInterface.getByIndex (int index)
Get a network interface given its index.
|
static NetworkInterface |
NetworkInterface.getByInetAddress (InetAddress addr)
Convenience method to search for a network interface that
has the specified Internet Protocol (IP) address bound to
it.
|
static NetworkInterface |
NetworkInterface.getByName (String name)
Searches for the network interface with the specified name.
|
byte[] |
NetworkInterface.getHardwareAddress ()
Returns the hardware address (usually MAC) of the interface if it
has one and if it can be accessed given the current privileges.
|
InetAddress |
MulticastSocket.getInterface ()
Retrieve the address of the network interface used for
multicast packets.
|
boolean |
Socket.getKeepAlive ()
Tests if SO_KEEPALIVE is enabled.
|
boolean |
MulticastSocket.getLoopbackMode ()
Get the setting for local loopback of multicast datagrams.
|
int |
NetworkInterface.getMTU ()
Returns the Maximum Transmission Unit (MTU) of this interface.
|
NetworkInterface |
MulticastSocket.getNetworkInterface ()
Get the multicast network interface set.
|
static Enumeration<NetworkInterface> |
NetworkInterface.getNetworkInterfaces ()
Returns all the interfaces on this machine.
|
boolean |
Socket.getOOBInline ()
Tests if OOBINLINE is enabled.
|
Object |
SocketOptions.getOption (int optID)
Fetch the value of an option.
|
int |
ServerSocket.getReceiveBufferSize ()
Gets the value of the SO_RCVBUF option for this ServerSocket,
that is the proposed buffer size that will be used for Sockets accepted
from this ServerSocket.
|
int |
DatagramSocket.getReceiveBufferSize ()
Get value of the SO_RCVBUF option for this DatagramSocket, that is the
buffer size used by the platform for input on this DatagramSocket.
|
int |
Socket.getReceiveBufferSize ()
Gets the value of the SO_RCVBUF option for this Socket,
that is the buffer size used by the platform for
input on this Socket.
|
boolean |
ServerSocket.getReuseAddress ()
Tests if SO_REUSEADDR is enabled.
|
boolean |
DatagramSocket.getReuseAddress ()
Tests if SO_REUSEADDR is enabled.
|
boolean |
Socket.getReuseAddress ()
Tests if SO_REUSEADDR is enabled.
|
int |
DatagramSocket.getSendBufferSize ()
Get value of the SO_SNDBUF option for this DatagramSocket, that is the
buffer size used by the platform for output on this DatagramSocket.
|
int |
Socket.getSendBufferSize ()
Get value of the SO_SNDBUF option for this Socket,
that is the buffer size used by the platform
for output on this Socket.
|
int |
Socket.getSoLinger ()
Returns setting for SO_LINGER.
|
int |
DatagramSocket.getSoTimeout ()
Retrieve setting for SO_TIMEOUT.
|
int |
Socket.getSoTimeout ()
Returns setting for SO_TIMEOUT.
|
boolean |
Socket.getTcpNoDelay ()
Tests if TCP_NODELAY is enabled.
|
int |
DatagramSocket.getTrafficClass ()
Gets traffic class or type-of-service in the IP datagram
header for packets sent from this DatagramSocket.
|
int |
Socket.getTrafficClass ()
Gets traffic class or type-of-service in the IP header
for packets sent from this Socket
|
boolean |
NetworkInterface.isLoopback ()
Returns whether a network interface is a loopback interface.
|
boolean |
NetworkInterface.isPointToPoint ()
Returns whether a network interface is a point to point interface.
|
boolean |
NetworkInterface.isUp ()
Returns whether a network interface is up and running.
|
void |
DatagramSocket.setBroadcast (boolean on)
Enable/disable SO_BROADCAST.
|
void |
MulticastSocket.setInterface (InetAddress inf)
Set the multicast network interface used by methods
whose behavior would be affected by the value of the
network interface.
|
void |
Socket.setKeepAlive (boolean on)
Enable/disable SO_KEEPALIVE.
|
void |
MulticastSocket.setLoopbackMode (boolean disable)
Disable/Enable local loopback of multicast datagrams
The option is used by the platform's networking code as a hint
for setting whether multicast data will be looped back to
the local socket.
|
void |
MulticastSocket.setNetworkInterface (NetworkInterface netIf)
Specify the network interface for outgoing multicast datagrams
sent on this socket.
|
void |
Socket.setOOBInline (boolean on)
Enable/disable OOBINLINE (receipt of TCP urgent data)
By default, this option is disabled and TCP urgent data received on a
socket is silently discarded.
|
void |
SocketOptions.setOption (int optID,
Object value)
Enable/disable the option specified by optID.
|
void |
ServerSocket.setReceiveBufferSize (int size)
Sets a default proposed value for the SO_RCVBUF option for sockets
accepted from this ServerSocket.
|
void |
DatagramSocket.setReceiveBufferSize (int size)
Sets the SO_RCVBUF option to the specified value for this
DatagramSocket.
|
void |
Socket.setReceiveBufferSize (int size)
Sets the SO_RCVBUF option to the specified value for this
Socket.
|
void |
ServerSocket.setReuseAddress (boolean on)
Enable/disable the SO_REUSEADDR socket option.
|
void |
DatagramSocket.setReuseAddress (boolean on)
Enable/disable the SO_REUSEADDR socket option.
|
void |
Socket.setReuseAddress (boolean on)
Enable/disable the SO_REUSEADDR socket option.
|
void |
DatagramSocket.setSendBufferSize (int size)
Sets the SO_SNDBUF option to the specified value for this
DatagramSocket.
|
void |
Socket.setSendBufferSize (int size)
Sets the SO_SNDBUF option to the specified value for this
Socket.
|
void |
Socket.setSoLinger (boolean on,
int linger)
Enable/disable SO_LINGER with the specified linger time in seconds.
|
void |
ServerSocket.setSoTimeout (int timeout)
Enable/disable SO_TIMEOUT with the specified timeout, in
milliseconds.
|
void |
DatagramSocket.setSoTimeout (int timeout)
Enable/disable SO_TIMEOUT with the specified timeout, in
milliseconds.
|
void |
Socket.setSoTimeout (int timeout)
Enable/disable SO_TIMEOUT with the specified timeout, in
milliseconds.
|
void |
Socket.setTcpNoDelay (boolean on)
Enable/disable TCP_NODELAY (disable/enable Nagle's algorithm).
|
void |
DatagramSocket.setTrafficClass (int tc)
Sets traffic class or type-of-service octet in the IP
datagram header for datagrams sent from this DatagramSocket.
|
void |
Socket.setTrafficClass (int tc)
Sets traffic class or type-of-service octet in the IP
header for packets sent from this Socket.
|
boolean |
NetworkInterface.supportsMulticast ()
Returns whether a network interface supports multicasting or not.
|
Constructor and Description |
---|
DatagramPacket (byte[] buf,
int offset,
int length,
SocketAddress address)
Constructs a datagram packet for sending packets of length
length with offset ioffset to the
specified port number on the specified host. |
DatagramPacket (byte[] buf,
int length,
SocketAddress address)
Constructs a datagram packet for sending packets of length
length to the specified port number on the specified
host. |
DatagramSocket ()
Constructs a datagram socket and binds it to any available port
on the local host machine.
|
DatagramSocket (int port)
Constructs a datagram socket and binds it to the specified port
on the local host machine.
|
DatagramSocket (int port,
InetAddress laddr)
Creates a datagram socket, bound to the specified local
address.
|
DatagramSocket (SocketAddress bindaddr)
Creates a datagram socket, bound to the specified local
socket address.
|
Socket (SocketImpl impl)
Creates an unconnected Socket with a user-specified
SocketImpl.
|
Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2020, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.
Scripting on this page tracks web page traffic, but does not change the content in any way.