jdk.net.DatagramPacket — clojure-interop/java.net 1.0.0

This class represents a datagram packet.

Datagram packets are used to implement a connectionless packet delivery service. Each message is routed from one machine to another based solely on information contained within that packet. Multiple packets sent from one machine to another might be routed differently, and might arrive in any order. Packet delivery is not guaranteed.

->datagram-packet clj

(->datagram-packet buf length)

(->datagram-packet buf offset length)

(->datagram-packet buf offset length address)

(->datagram-packet buf offset length address port)

Constructor.

Constructs a datagram packet for sending packets of length length with offset ioffsetto the specified port number on the specified host. The length argument must be less than or equal to buf.length.

buf - the packet data. - byte[] offset - the packet data offset. - int length - the packet data length. - int address - the destination address. - java.net.InetAddress port - the destination port number. - int

get-address clj

(get-address this)

Returns the IP address of the machine to which this datagram is being sent or from which the datagram was received.

returns: the IP address of the machine to which this datagram is being sent or from which the datagram was received. - java.net.InetAddress

get-data clj

(get-data this)

Returns the data buffer. The data received or the data to be sent starts from the offset in the buffer, and runs for length long.

returns: the buffer used to receive or send data - byte[]

get-length clj

(get-length this)

Returns the length of the data to be sent or the length of the data received.

returns: the length of the data to be sent or the length of the data received. - int

get-offset clj

(get-offset this)

Returns the offset of the data to be sent or the offset of the data received.

returns: the offset of the data to be sent or the offset of the data received. - int

get-port clj

(get-port this)

Returns the port number on the remote host to which this datagram is being sent or from which the datagram was received.

returns: the port number on the remote host to which this datagram is being sent or from which the datagram was received. - int

get-socket-address clj

(get-socket-address this)

Gets the SocketAddress (usually IP address port number) of the remote host that this packet is being sent to or is coming from.

returns: the SocketAddress - java.net.SocketAddress

set-address clj

(set-address this iaddr)

Sets the IP address of the machine to which this datagram is being sent.

iaddr - the InetAddress - java.net.InetAddress

set-data clj

(set-data this buf)

(set-data this buf offset length)

Set the data buffer for this packet. This sets the data, length and offset of the packet.

buf - the buffer to set for this packet - byte[] offset - the offset into the data - int length - the length of the data and/or the length of the buffer used to receive data - int

throws: java.lang.NullPointerException - if the argument is null

set-length clj

(set-length this length)

Set the length for this packet. The length of the packet is the number of bytes from the packet's data buffer that will be sent, or the number of bytes of the packet's data buffer that will be used for receiving data. The length must be lesser or equal to the offset plus the length of the packet's buffer.

length - the length to set for this packet. - int

throws: java.lang.IllegalArgumentException - if the length is negative of if the length is greater than the packet's data buffer length.

set-port clj

(set-port this iport)

Sets the port number on the remote host to which this datagram is being sent.

iport - the port number - int

set-socket-address clj

(set-socket-address this address)

Sets the SocketAddress (usually IP address port number) of the remote host to which this datagram is being sent.

address - the SocketAddress - java.net.SocketAddress

throws: java.lang.IllegalArgumentException - if address is null or is a SocketAddress subclass not supported by this socket