Server code for NatTypeDetection. More...

#include <NatTypeDetectionServer.h>

Inheritance diagram for RakNet::NatTypeDetectionServer:

Classes
struct	NATDetectionAttempt
Public Types
enum	NATDetectionState { STATE_NONE, STATE_TESTING_NONE_1, STATE_TESTING_NONE_2, STATE_TESTING_FULL_CONE_1, STATE_TESTING_FULL_CONE_2, STATE_TESTING_ADDRESS_RESTRICTED_1, STATE_TESTING_ADDRESS_RESTRICTED_2, STATE_TESTING_PORT_RESTRICTED_1, STATE_TESTING_PORT_RESTRICTED_2, STATE_DONE }
Public Member Functions
	NatTypeDetectionServer ()
virtual void	OnClosedConnection (const SystemAddress &systemAddress, RakNetGUID rakNetGUID, PI2_LostConnectionReason lostConnectionReason)
virtual PluginReceiveResult	OnReceive (Packet *packet)
void	Shutdown (void)
void	Startup (const char nonRakNetIP2, const char nonRakNetIP3, const char *nonRakNetIP4)
virtual void	Update (void)
	Update is called every time a packet is checked for .
virtual	~NatTypeDetectionServer ()
Static Public Member Functions
static void	DestroyInstance (NatTypeDetectionServer *i)
static NatTypeDetectionServer *	GetInstance (void)
Protected Member Functions
unsigned int	GetDetectionAttemptIndex (const SystemAddress &sa)
unsigned int	GetDetectionAttemptIndex (RakNetGUID guid)
void	OnDetectionRequest (Packet *packet)
Protected Attributes
DataStructures::List < NATDetectionAttempt >	natDetectionAttempts
SOCKET	s1p2
unsigned short	s1p2Port
SOCKET	s2p3
unsigned short	s2p3Port
SOCKET	s3p4
char	s3p4Address [64]
unsigned short	s3p4Port
SOCKET	s4p5
unsigned short	s4p5Port

Detailed Description

Sends to a remote system on certain ports and addresses to determine what type of router, if any, that client is behind Requires that the server have 4 external IP addresses

Server has 1 instance of RakNet. Server has four external ip addresses S1 to S4. Five ports are used in total P1 to P5. RakNet is bound to S1P1. Sockets are bound to S1P2, S2P3, S3P4, S4P5
Client with one port using RakNet (C1). Another port not using anything (C2).
C1 connects to S1P1 for normal communication.
S4P5 sends to C2. If arrived, no NAT. Done. (If didn't arrive, S4P5 potentially banned, do not use again).
S2P3 sends to C1 (Different address, different port, to previously used port on client). If received, Full-cone nat. Done. (If didn't arrive, S2P3 potentially banned, do not use again).
S1P2 sends to C1 (Same address, different port, to previously used port on client). If received, address-restricted cone nat. Done.
Server via RakNet connection tells C1 to send to to S3P4. If address of C1 as seen by S3P4 is the same as the address of C1 as seen by S1P1 (RakNet connection), then port-restricted cone nat. Done
Else symmetric nat. Done.

See also:: NatPunchthroughServer; NatTypeDetectionClient

Definition at line 48 of file NatTypeDetectionServer.h.

Member Enumeration Documentation

enum RakNet::NatTypeDetectionServer::NATDetectionState

Enumerator:

STATE_NONE
STATE_TESTING_NONE_1
STATE_TESTING_NONE_2
STATE_TESTING_FULL_CONE_1
STATE_TESTING_FULL_CONE_2
STATE_TESTING_ADDRESS_RESTRICTED_1
STATE_TESTING_ADDRESS_RESTRICTED_2
STATE_TESTING_PORT_RESTRICTED_1
STATE_TESTING_PORT_RESTRICTED_2
STATE_DONE

Definition at line 80 of file NatTypeDetectionServer.h.

    {
        STATE_NONE,
        STATE_TESTING_NONE_1,
        STATE_TESTING_NONE_2,
        STATE_TESTING_FULL_CONE_1,
        STATE_TESTING_FULL_CONE_2,
        STATE_TESTING_ADDRESS_RESTRICTED_1,
        STATE_TESTING_ADDRESS_RESTRICTED_2,
        STATE_TESTING_PORT_RESTRICTED_1,
        STATE_TESTING_PORT_RESTRICTED_2,
        STATE_DONE,
    };

Constructor & Destructor Documentation

RakNet::NatTypeDetectionServer::NatTypeDetectionServer ( )

virtual RakNet::NatTypeDetectionServer::~NatTypeDetectionServer ( ) [virtual]

Member Function Documentation

static void RakNet::NatTypeDetectionServer::DestroyInstance ( NatTypeDetectionServer * i ) [static]

unsigned int RakNet::NatTypeDetectionServer::GetDetectionAttemptIndex ( const SystemAddress & sa ) [protected]

unsigned int RakNet::NatTypeDetectionServer::GetDetectionAttemptIndex ( RakNetGUID guid ) [protected]

static NatTypeDetectionServer* RakNet::NatTypeDetectionServer::GetInstance ( void ) [static]

virtual void RakNet::NatTypeDetectionServer::OnClosedConnection	(	const SystemAddress &	systemAddress,
		RakNetGUID	rakNetGUID,
		PI2_LostConnectionReason	lostConnectionReason
	)		`[virtual]`

Called when a connection is dropped because the user called RakPeer::CloseConnection() for a particular system

Parameters:

[in]	systemAddress	The system whose connection was closed
[in]	rakNetGuid	The guid of the specified system
[in]	lostConnectionReason	How the connection was closed: manually, connection lost, or notification of disconnection

Reimplemented from RakNet::PluginInterface2.

void RakNet::NatTypeDetectionServer::OnDetectionRequest ( Packet * packet ) [protected]