de.ipcon.tools.net

Class NetworkTools

java.lang.Object

de.ipcon.tools.net.NetworkTools

public final class NetworkTools
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static javax.net.ssl.SSLSocketFactory	createSSLSocketFactory() Creates and returns an SSLSocketFactory using an X509ExtendedTrustManager.
static java.lang.String	getHostname() Determines and returns hostname of the current machine.
static java.lang.String	getHostname(boolean nameOnly)
static java.net.InetAddress	getNetworkAddress() Determines and returns the external InetAddress of the current machine by crawling trough the InetAdresses from NetworkInterface.
static java.net.InetAddress	getNetworkAddress(boolean onlyResolvableName)
static long	ip2long(java.lang.String n) Converts a given human readable ip-v4-address (i.e. 1.2.3.4/32) into an ip-address as long
static boolean	isMyIpAddress(java.net.InetAddress addr) Returns true, if the passed InetAddress is the caller's own InetAddress.
static boolean	isPortAvailable(java.lang.String host, int port) Returns true, if the given port on the given host is not listening.
static java.lang.String	long2ip(long n) Converts a given ip-v4-address in long (host) into a human readable ip-v4-address (i.e. 1.2.3.4/32)
static java.lang.String	niceAddress(java.net.InetAddress ina, int port) Returns a nicely formatted String for the passed InetAddress and port.
static void	prepareSecureSocket(javax.net.ssl.SSLServerSocket s) Prepares a passed SSLServerSocket for usage as secure transport, "secure" as defined by us (using only really secure protocols and cipher suites, that have not yet been hacked AFAWK).
static void	prepareSecureSocket(javax.net.ssl.SSLSocket s) Prepares a passed SSLSocket for usage as secure transport, "secure" as defined by us (using only really secure protocols and cipher suites, that have not yet been hacked AFAWK).

Methods inherited from class java.lang.Object

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

Method Detail

createSSLSocketFactory

public static javax.net.ssl.SSLSocketFactory createSSLSocketFactory()

Creates and returns an SSLSocketFactory using an X509ExtendedTrustManager.

niceAddress

public static java.lang.String niceAddress(java.net.InetAddress ina,
                                           int port)

Returns a nicely formatted String for the passed InetAddress and port.

long2ip

public static java.lang.String long2ip(long n)

Converts a given ip-v4-address in long (host) into a human readable ip-v4-address (i.e. 1.2.3.4/32)

Parameters:

n - the ip-v4-address to convert as long

Returns:

the human readable ip-v4-address as String

ip2long

public static long ip2long(java.lang.String n)

Converts a given human readable ip-v4-address (i.e. 1.2.3.4/32) into an ip-address as long

Parameters:

n - the human readable ip-v4-address

Returns:

the ip-v4-address as long

isMyIpAddress

public static boolean isMyIpAddress(java.net.InetAddress addr)

Returns true, if the passed InetAddress is the caller's own InetAddress.

getNetworkAddress

public static java.net.InetAddress getNetworkAddress()

Determines and returns the external InetAddress of the current machine by crawling trough the InetAdresses from NetworkInterface.

Parameters:

onlyResolvableName - forces to use only a by hostname resolvable address

Returns:

the InetAddress

getNetworkAddress

public static java.net.InetAddress getNetworkAddress(boolean onlyResolvableName)

getHostname

public static java.lang.String getHostname()

Determines and returns hostname of the current machine.

Parameters:

nameOnly - if false/0 (the default) returns the full name including possible domain, etc. If true only returns the first component which should be the "simple" hostname

Returns:

the hostname of the current maschine

getHostname

public static java.lang.String getHostname(boolean nameOnly)

isPortAvailable

public static boolean isPortAvailable(java.lang.String host,
                                      int port)

Returns true, if the given port on the given host is not listening.

prepareSecureSocket

public static void prepareSecureSocket(javax.net.ssl.SSLSocket s)

Prepares a passed SSLSocket for usage as secure transport, "secure" as defined by us (using only really secure protocols and cipher suites, that have not yet been hacked AFAWK).

prepareSecureSocket

public static void prepareSecureSocket(javax.net.ssl.SSLServerSocket s)

Prepares a passed SSLServerSocket for usage as secure transport, "secure" as defined by us (using only really secure protocols and cipher suites, that have not yet been hacked AFAWK).