class inet::UdpSocket

sys::Obj
  inet::UdpSocket

Source

UdpSocket manages a UDP/IP datagram endpoint.

bind

This bind(IpAddr? addr, Int? port)

Source

Bind this socket to the specified local address. If addr is null then the default IpAddr for the local host is selected. If port is null an ephemeral port is selected. Throw IOErr if the port is already bound or the bind fails. Return this.

close

Bool close()

Source

Close this socket. This method is guaranteed to never throw an IOErr. Return true if the socket was closed successfully or false if the socket was closed abnormally.

connect

This connect(IpAddr addr, Int port)

Source

Connect this socket to the specified address and port. Once connected packets may only be send to the remote using this socket.

disconnect

This disconnect()

Source

Disconnect this socket from its remote address. Do nothing if not connected. Return this.

isBound

Bool isBound()

Source

Is this socket bound to a local address and port.

isClosed

Bool isClosed()

Source

Is this socket closed.

isConnected

Bool isConnected()

Source

Is this socket "connected" to a specific remote host. Since UDP is not session oriented, connected just means we've used connect() to predefine the remote address where we want to send packets.

localAddr

IpAddr? localAddr()

Source

Get the bound local address or null if unbound.

localPort

Int? localPort()

Source

Get the bound local port or null if unbound.

make

new make()

Source

Make a new unbound UDP socket.

options

SocketOptions options()

Source

Access the SocketOptions used to tune this socket. The following options apply to UdpSockets:

  • broadcast
  • receiveBufferSize
  • sendBufferSize
  • reuseAddr
  • receiveBufferSize
  • trafficClass Accessing other option fields will throw UnsupportedErr.
receive

UdpPacket receive(UdpPacket? packet := null)

Source

Receive a packet on this socket's bound local address. The resulting packet is filled in with the sender's address and port. This method blocks until a packet is received. If this socket's receiveTimeout option is configured, then receive will timeout with an IOErr.

The packet data is read into the Buf starting at it's current position. The buffer is not grown - at most Buf.capacity bytes are received. If the received message is longer than the packet's capacity then the message is silently truncated (weird Java behavior). Upon return the Buf size and position are updated to reflect the bytes read. Use Buf.flip to ready the buffer to read from start. If packet is null, then a new packet is created with a capacity of 1kb. The packet data must always be a memory backed buffer.

remoteAddr

IpAddr? remoteAddr()

Source

Get the remote address or null if not connected to a specific end point.

remotePort

Int? remotePort()

Source

Get the remote port or null if not connected to a specific end point.

send

Void send(UdpPacket packet)

Source

Send the packet to its specified remote endpoint. If this is socket is connected to a specific remote address, then the packet's address and port must be null or ArgErr is thrown. Throw IOErr on error.

The number of bytes sent is buf.remaining; upon return the buf is drained and position is advanced.