Package org.acplt.oncrpc

Class OncRpcUdpSocketHelper

java.lang.Object
org.acplt.oncrpc.OncRpcUdpSocketHelper
public class OncRpcUdpSocketHelper extends Object
Wraps JRE-specific networking code for UDP/IP-based client sockets. So much for compile once, make it unuseable everywhere.

The following JRE-dependent methods are wrapped and will just do nothing or return fake information on old JRE plattforms. The number after each method wrapper indicates the first JRE version supporting a particular feature:

  • setSendBufferSize() -- 1.2
  • setReceiveBufferSize() -- 1.2

The following methods have been around since JDK 1.1, so we do not need to wrap them as we will never support JDK 1.0 -- let it rest in piece(s):

  • getTcpNoDelay() / setTcpNoDelay()
  • getSoTimeout() / setSoTimeout()
Version:
$Header: /home/harald/repos/remotetea.sf.net/remotetea/src/org/acplt/oncrpc/OncRpcUdpSocketHelper.java,v 1.3 2007/05/29 19:45:46 haraldalbrecht Exp $
Author:
Harald Albrecht

  • Constructor Summary

    Constructors
    Constructor
    Description
    OncRpcUdpSocketHelper(DatagramSocket socket)
    Creates a datagram socket and binds it to an arbitrary available port on the local host machine.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getReceiveBufferSize()
    Get size of receive buffer for this socket.
    int
    getSendBufferSize()
    Get size of send buffer for this socket.
    protected void
    queryMethods()
    Looks up methods of class DatagramSocket whether they are supported by the class libraries of the JRE we are currently executing on.
    void
    setReceiveBufferSize(int size)
    Sets the socket's receive buffer size as a hint to the underlying transport layer to use appropriately sized I/O buffers.
    void
    setSendBufferSize(int size)
    Sets the socket's send buffer size as a hint to the underlying transport layer to use appropriately sized I/O buffers.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • OncRpcUdpSocketHelper

      public OncRpcUdpSocketHelper(DatagramSocket socket)
      Creates a datagram socket and binds it to an arbitrary available port on the local host machine.
      Parameters:
      socket - A datagram socket instance

  • Method Details

    • setSendBufferSize

      public void setSendBufferSize(int size) throws SocketException
      Sets the socket's send buffer size as a hint to the underlying transport layer to use appropriately sized I/O buffers. If the class libraries of the underlying JRE do not support setting the send buffer size, this is silently ignored.
      Parameters:
      size - The size to which to set the send buffer size. This value must be greater than 0.
      Throws:
      SocketException - if the socket's send buffer size could not be set, because the transport layer decided against accepting the new buffer size.
      IllegalArgumentException - if size is 0 or negative.

    • getSendBufferSize

      public int getSendBufferSize() throws SocketException
      Get size of send buffer for this socket.
      Returns:
      Size of send buffer.
      Throws:
      SocketException - If the transport layer could not be queried for the size of this socket's send buffer.

    • setReceiveBufferSize

      public void setReceiveBufferSize(int size) throws SocketException
      Sets the socket's receive buffer size as a hint to the underlying transport layer to use appropriately sized I/O buffers. If the class libraries of the underlying JRE do not support setting the receive buffer size, this is silently ignored.
      Parameters:
      size - The size to which to set the receive buffer size. This value must be greater than 0.
      Throws:
      SocketException - if the socket's receive buffer size could not be set, because the transport layer decided against accepting the new buffer size.
      IllegalArgumentException - if size is 0 or negative.

    • getReceiveBufferSize

      public int getReceiveBufferSize() throws SocketException
      Get size of receive buffer for this socket.
      Returns:
      Size of receive buffer.
      Throws:
      SocketException - If the transport layer could not be queried for the size of this socket's receive buffer.

    • queryMethods

      protected void queryMethods()
      Looks up methods of class DatagramSocket whether they are supported by the class libraries of the JRE we are currently executing on.