Package org.drasyl.handler.remote.protocol

Class UniteMessage

java.lang.Object

org.drasyl.handler.remote.protocol.UniteMessage

All Implemented Interfaces:

FullReadMessage<UniteMessage>, RemoteMessage

public abstract class UniteMessage
extends Object

This message is sent by a super node for NAT traversal. The message provides routing information for a peer we want to directly communicate. The message's body is structured as follows:

• Address: The DrasylAddress to which this message contains routing information (32 bytes).
• Port: The UDP port through which the node can be reached (2 bytes).
• InetAddress: The IP address which the node can be reached. IPv4 addresses will be mapped to IPv6 addresses (16 bytes).

This is an immutable object.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MIN_LENGTH

Fields inherited from interface org.drasyl.handler.remote.protocol.RemoteMessage

MAGIC_NUMBER, MAGIC_NUMBER_LEN

Constructor Summary

Constructors

Constructor	Description
UniteMessage()

Method Summary

Modifier and Type	Method	Description
ArmedProtocolMessage	arm(io.netty.buffer.ByteBufAllocator alloc, Crypto cryptoInstance, SessionPair sessionPair)	Returns an armed version (ArmedProtocolMessage) of this message for sending it through untrustworthy channels.
abstract DrasylAddress	getAddress()	Returns the public key of the peer.
abstract Set<InetSocketAddress>	getInetAddresses()	Returns the ip address of the peer.
int	getLength()
UniteMessage	incrementHopCount()	Returns this message with incremented hop count.
static UniteMessage	of(int networkId, DrasylAddress recipient, IdentityPublicKey sender, ProofOfWork proofOfWork, DrasylAddress address, Set<InetSocketAddress> inetAddresses)	Creates new unit message with random Nonce, and minimal HopCount value.
static UniteMessage	of(HopCount hopCount, boolean isArmed, int networkId, Nonce nonce, DrasylAddress recipient, DrasylAddress sender, ProofOfWork proofOfWork, DrasylAddress address, Set<InetSocketAddress> inetAddresses)	Creates new unit message.
protected void	writeBodyTo(io.netty.buffer.ByteBuf out)
protected void	writePrivateHeaderTo(io.netty.buffer.ByteBuf out)
protected void	writePublicHeaderTo(io.netty.buffer.ByteBuf out)
void	writeTo(io.netty.buffer.ByteBuf out)	Writes this message to the buffer out.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.drasyl.handler.remote.protocol.FullReadMessage

getRecipient

Methods inherited from interface org.drasyl.handler.remote.protocol.RemoteMessage

getArmed, getHopCount, getNetworkId, getNonce, getProofOfWork, getSender

Field Details

MIN_LENGTH

public static final int MIN_LENGTH

See Also:

• Constant Field Values

Constructor Details

UniteMessage

public UniteMessage()

Method Details

of

public static UniteMessage of(HopCount hopCount,
 boolean isArmed,
 int networkId,
 Nonce nonce,
 DrasylAddress recipient,
 DrasylAddress sender,
 ProofOfWork proofOfWork,
 DrasylAddress address,
 Set<InetSocketAddress> inetAddresses)

Creates new unit message.

Parameters:

hopCount - the hop count

isArmed - if the message is armed or not

networkId - the network id

nonce - the nonce

recipient - the public key of the recipient

sender - the public key of the sender

proofOfWork - the proof of work of sender

address - the public key of the peer

inetAddresses - the internet addresses of the peer

Throws:

NullPointerException - if nonce, sender, proofOfWork, recipient, hopCount, address, or inetAddress is null

IllegalArgumentException - if port is invalid

of

public static UniteMessage of(int networkId,
 DrasylAddress recipient,
 IdentityPublicKey sender,
 ProofOfWork proofOfWork,
 DrasylAddress address,
 Set<InetSocketAddress> inetAddresses)

Creates new unit message with random Nonce, and minimal HopCount value.

Parameters:

networkId - the network id

recipient - the public key of the recipient

sender - the public key of the sender

proofOfWork - the proof of work of sender

address - the public key of the peer

inetAddresses - the ip inetAddress and port of the peer

Throws:

NullPointerException - if sender, proofOfWork, recipient, address, or inetAddress.getAddress() is null

IllegalArgumentException - if inetAddress.getPort() is invalid

getAddress

public abstract DrasylAddress getAddress()

Returns the public key of the peer.

Returns:

the public key of the peer.

getInetAddresses

public abstract Set<InetSocketAddress> getInetAddresses()

Returns the ip address of the peer.

Returns:

the ip address of the peer.

incrementHopCount

public UniteMessage incrementHopCount()

Description copied from interface: FullReadMessage

Returns this message with incremented hop count.

Returns:

this message with incremented hop count.

writePrivateHeaderTo

protected void writePrivateHeaderTo(io.netty.buffer.ByteBuf out)

writeBodyTo

protected void writeBodyTo(io.netty.buffer.ByteBuf out)

getLength

public int getLength()

arm

public ArmedProtocolMessage arm(io.netty.buffer.ByteBufAllocator alloc,
 Crypto cryptoInstance,
 SessionPair sessionPair)
                         throws InvalidMessageFormatException

Description copied from interface: FullReadMessage

Returns an armed version (ArmedProtocolMessage) of this message for sending it through untrustworthy channels.

Specified by:

arm in interface FullReadMessage<T extends FullReadMessage<?>>

cryptoInstance - the crypto instance that should be used

sessionPair - will be used for encryption

Returns:

the armed version of this message

Throws:

InvalidMessageFormatException - if arming was not possible

writeTo

public void writeTo(io.netty.buffer.ByteBuf out)

Description copied from interface: RemoteMessage

Writes this message to the buffer out.

Specified by:

writeTo in interface RemoteMessage

Parameters:

out - writes this envelope to this buffer

writePublicHeaderTo

protected void writePublicHeaderTo(io.netty.buffer.ByteBuf out)