package es.tid.rsvp.objects;
import java.net.Inet6Address;
import java.net.UnknownHostException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/*
*
RFC 3209 RSVP-TE
4.6.1.1. LSP_TUNNEL_IPv6 Session Object
Class = SESSION, LSP_TUNNEL_IPv6 C_Type = 8
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| IPv6 tunnel end point address |
+ +
| (16 bytes) |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| MUST be zero | Tunnel ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| Extended Tunnel ID |
+ +
| (16 bytes) |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
IPv6 tunnel end point address
IPv6 address of the egress node for the tunnel.
Tunnel ID
A 16-bit identifier used in the SESSION that remains constant
over the life of the tunnel.
Extended Tunnel ID
A 16-byte identifier used in the SESSION that remains constant
over the life of the tunnel. Normally set to all zeros.
Ingress nodes that wish to narrow the scope of a SESSION to the
ingress-egress pair may place their IPv6 address here as a
globally unique identifier.
*/
public class SessionLSPTunnelIPv6 extends Session{
/**
* IPv6 address of the egress node for the tunnel.
*/
protected Inet6Address egressNodeAddress;
/**
* A 16-bit identifier used in the SESSION that remains constant
over the life of the tunnel.
*/
protected int tunnelId;
/**
* A 16-byte identifier used in the SESSION that remains constant
over the life of the tunnel. Normally set to all zeros.
Ingress nodes that wish to narrow the scope of a SESSION to the
ingress-egress pair may place their IPv6 address here as a
globally unique identifier.
*/
protected int extendedTunnelId;
/**
* Log
*/
private static final Logger log = LoggerFactory.getLogger("ROADM");
/**
* Constructor to be used when a new Session LSP Tunnel IPv6 Object wanted to be
* attached to a new message
*/
public SessionLSPTunnelIPv6(){
classNum = 1;
cType = 8;
length = RSVPObjectParameters.RSVP_OBJECT_COMMON_HEADER_SIZE + 36;
bytes = new byte[length];
log.debug("Session LSP Tunnel IPv6 Object Created");
}
/**
* Constructor to be used when a new Session LSP Tunnel IPv6 Object wanted to be
* attached to a new message
* @param egressNodeAddress egressNodeAddress
* @param extendedTunnelId extendedTunnelId
* @param tunnelId tunnelID
*/
public SessionLSPTunnelIPv6(Inet6Address egressNodeAddress, int tunnelId, int extendedTunnelId){
classNum = 1;
cType = 8;
length = RSVPObjectParameters.RSVP_OBJECT_COMMON_HEADER_SIZE + 36;
bytes = new byte[length];
this.egressNodeAddress = egressNodeAddress;
this.tunnelId = tunnelId;
this.extendedTunnelId = extendedTunnelId;
log.debug("Session LSP Tunnel IPv6 Object Created");
}
/**
* Constructor to be used when a new Session LSP Tunnel IPv6 Object wanted to be decoded from a received
* message.
* @param bytes bytes
* @param offset offset
*/
public SessionLSPTunnelIPv6(byte[] bytes, int offset){
this.decodeHeader(bytes,offset);
this.bytes = new byte[this.getLength()];
log.debug("Session LSP Tunnel IPv6 Object Created");
}
/**
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| IPv6 tunnel end point address |
+ +
| (16 bytes) |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| MUST be zero | Tunnel ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| Extended Tunnel ID |
+ +
| (16 bytes) |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
public void encode(){
encodeHeader();
byte[] addr = egressNodeAddress.getAddress();
int currentIndex = RSVPObjectParameters.RSVP_OBJECT_COMMON_HEADER_SIZE;
System.arraycopy(addr,0, getBytes(), currentIndex, addr.length);
currentIndex = currentIndex + addr.length;
bytes[currentIndex] = (byte) 0;
bytes[currentIndex+1] = (byte) 0;
bytes[currentIndex+2] = (byte)((tunnelId>>8) & 0xFF);
bytes[currentIndex+3] = (byte)(tunnelId & 0xFF);
bytes[currentIndex+4] = (byte)((extendedTunnelId>>24) & 0xFF);
bytes[currentIndex+5] = (byte)((extendedTunnelId>>16) & 0xFF);
bytes[currentIndex+6] = (byte)((extendedTunnelId>>8) & 0xFF);
bytes[currentIndex+7] = (byte)(extendedTunnelId & 0xFF);
}
public void decode(byte[] bytes, int offset){
byte[] receivedAddress = new byte[16];
System.arraycopy(bytes,offset+4,receivedAddress,0,16);
try{
egressNodeAddress = (Inet6Address) Inet6Address.getByAddress(receivedAddress);
}catch(UnknownHostException e){
// FIXME: Poner logs con respecto a excepcion
}
offset = offset + 16;
tunnelId = (int)(bytes[offset+2] | bytes[offset+3]);
offset = offset + 4;
extendedTunnelId = (int)(bytes[offset] | bytes[offset+1] | bytes[offset+2] | bytes[offset+3] | bytes[offset+4] | bytes[offset+5] | bytes[offset+6] | bytes[offset+7] | bytes[offset+8] | bytes[offset+9] | bytes[offset+10] | bytes[offset+11] | bytes[offset+12] | bytes[offset+13] | bytes[offset+14] | bytes[offset+15]);
}
}
