org.mdiutil.io

Class SocketUtilities

java.lang.Object

org.mdiutil.io.SocketUtilities

public class SocketUtilities
extends Object

This class provides several socket utilities.

Since:

0.9.48

Constructor Summary

Constructors

Constructor and Description
SocketUtilities()

Method Summary

Modifier and Type	Method and Description
static int	getFreePort() Return a free available port.
static int	getFreePort(int minPort, int maxPort) Return a free available port between two ports.
static int	getFreePort(int minPort, int maxPort, int maxTries) Return a free available port between two ports.

Methods inherited from class java.lang.Object

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

Constructor Detail

SocketUtilities

public SocketUtilities()

Method Detail

getFreePort

public static int getFreePort()

Return a free available port. Return -1 is no available port can be found. Note that the implementation creates a temporary ServerSocket with specifying the 0 port to get any available port.

Returns:

the free available port

getFreePort

public static int getFreePort(int minPort,
                              int maxPort)

Return a free available port between two ports. The initial port to be chosen will be a random port between minPort and maxPort. Also only at maximum maxPort - minPort trials will be tried. The method will return -1 if no port between min and max are available.

Parameters:

minPort - the minimum port

maxPort - the maximum port

Returns:

the free available port

getFreePort

public static int getFreePort(int minPort,
                              int maxPort,
                              int maxTries)

Return a free available port between two ports. The initial port to be chosen will be a random port between minPort and maxPort. Also only at maximum maxTries trials will be tried. The method will return -1 if no port between min and max are available.

Parameters:

minPort - the minimum port

maxPort - the maximum port

maxTries - the maximum number of tries to get the free port

Returns:

the free available port