Package one.pkg.tinyutils.network.nat

Class NATProxy

java.lang.Object

one.pkg.tinyutils.network.nat.NATProxy

public class NATProxy
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	NATProxy.STUNMappingResult

Constructor Summary

Constructors

Constructor	Description
NATProxy()
NATProxy(int bufferSize)

Method Summary

Modifier and Type	Method	Description
NATProxy.STUNMappingResult	getSTUNMapping()	Retrieves the STUN mapping result for the default port.
NATProxy.STUNMappingResult	getSTUNMapping(int localPort)	Establishes a STUN (Session Traversal Utilities for NAT) mapping by communicating
boolean	isRunning()	Indicates whether the NATProxy is currently running.
void	startTCPForward(int listenPort, String internalHost, int internalPort)	Starts a TCP forwarding proxy that listens for incoming TCP connections on the specified port and
void	startUDPForward(NATProxy.STUNMappingResult mappingResult, String internalHost, int internalPort)	Starts forwarding UDP packets between an external STUN-mapped socket and an internal host/port.
void	stop()	Stops the NATProxy service and performs cleanup operations.

Methods inherited from class java.lang.Object

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

Constructor Details

NATProxy

public NATProxy()

NATProxy

public NATProxy(int bufferSize)

Method Details

getSTUNMapping

public NATProxy.STUNMappingResult getSTUNMapping()
                                          throws Exception

Retrieves the STUN mapping result for the default port. The method determines the public IP address and public port

Throws:

Exception

getSTUNMapping

public NATProxy.STUNMappingResult getSTUNMapping(int localPort)
                                          throws Exception

Establishes a STUN (Session Traversal Utilities for NAT) mapping by communicating

Throws:

Exception

startUDPForward

public void startUDPForward(NATProxy.STUNMappingResult mappingResult,
 String internalHost,
 int internalPort)
                     throws Exception

Starts forwarding UDP packets between an external STUN-mapped socket and an internal host/port. This method spawns a new thread for handling the UDP packet forwarding process.

Parameters:

mappingResult - The result of the STUN mapping, which contains the external socket to use for forwarding.

internalHost - The hostname or IP address of the internal destination to which packets are forwarded.

internalPort - The port number of the internal destination to which packets are forwarded.

Throws:

Exception - If an error occurs during the setup or execution of the UDP forwarding process.

IllegalStateException - If the proxy is already running.

startTCPForward

public void startTCPForward(int listenPort,
 String internalHost,
 int internalPort)
                     throws Exception

Starts a TCP forwarding proxy that listens for incoming TCP connections on the specified port and

Throws:

Exception

stop

public void stop()

Stops the NATProxy service and performs cleanup operations.

This method halts all ongoing processes of the NATProxy, including shutting down sockets used for UDP and TCP communication

isRunning

public boolean isRunning()

Indicates whether the NATProxy is currently running.

Returns:

true if the NATProxy is running, false otherwise.