org.apache.commons.httpclient.protocol
Class ControllerThreadSocketFactory

java.lang.Object
  org.apache.commons.httpclient.protocol.ControllerThreadSocketFactory

public final class ControllerThreadSocketFactory
extends Object

This helper class is intedned to help work around the limitation of older Java versions (older than 1.4) that prevents from specifying a connection timeout when creating a socket. This factory executes a controller thread overssing the process of socket initialisation. If the socket constructor cannot be created within the specified time limit, the controller terminates and throws an ConnectTimeoutException

Since:

3.0

Author:

Ortwin Glueck, Oleg Kalnichevski

Nested Class Summary

static class

ControllerThreadSocketFactory.SocketTask Helper class for wrapping socket based tasks.

Method Summary

static Socket	createSocket(ControllerThreadSocketFactory.SocketTask task, int timeout)
static Socket	createSocket(ProtocolSocketFactory socketfactory, String host, int port, InetAddress localAddress, int localPort, int timeout) This method spawns a controller thread overseeing the process of socket initialisation.

Methods inherited from class java.lang.Object

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

Method Detail

createSocket

public static Socket createSocket(ProtocolSocketFactory socketfactory,
                                  String host,
                                  int port,
                                  InetAddress localAddress,
                                  int localPort,
                                  int timeout)
                           throws IOException,
                                  UnknownHostException,
                                  ConnectTimeoutException

This method spawns a controller thread overseeing the process of socket initialisation. If the socket constructor cannot be created within the specified time limit, the controller terminates and throws an ConnectTimeoutException

Parameters:

host - the host name/IP

port - the port on the host

localAddress - the local host name/IP to bind the socket to

localPort - the port on the local machine

timeout - the timeout value to be used in milliseconds. If the socket cannot be completed within the given time limit, it will be abandoned

Returns:

a connected Socket

Throws:

IOException - if an I/O error occurs while creating the socket

UnknownHostException - if the IP address of the host cannot be determined

ConnectTimeoutException - if socket cannot be connected within the given time limit

createSocket

public static Socket createSocket(ControllerThreadSocketFactory.SocketTask task,
                                  int timeout)
                           throws IOException,
                                  UnknownHostException,
                                  ConnectTimeoutException

Throws:

IOException

UnknownHostException

ConnectTimeoutException