Package | Description |
---|---|
java.net |
Provides the classes for implementing networking applications.
|
Modifier and Type | Class and Description |
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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.
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