Package net.i2p.router.transport.udp

Class OutboundMessageFragments

java.lang.Object

net.i2p.router.transport.udp.OutboundMessageFragments

class OutboundMessageFragments
extends Object

Coordinate the outbound fragments and select the next one to be built. This pool contains messages we are actively trying to send, essentially doing a round robin across each message to send one fragment, as implemented in getNextVolley(). This also honors per-peer throttling, taking note of each peer's allocations. If a message has each of its fragments sent more than a certain number of times, it is failed out. In addition, this instance also receives notification of message ACKs from the InboundMessageFragments, signaling that we can stop sending a message.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	OutboundMessageFragments.ActiveThrottle	throttle

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final int	MAX_VOLLEYS	if we can handle more messages explicitly, set this to true

Constructor Summary

Constructors

Constructor	Description
OutboundMessageFragments(RouterContext ctx, UDPTransport transport, OutboundMessageFragments.ActiveThrottle throttle)

Method Summary

Modifier and Type	Method	Description
void	add(List<OutboundMessageState> states, PeerState peer)	Short circuit the OutNetMessage, letting us send multiple messages reliably and efficiently.
void	add(OutNetMessage msg)	Add a new message to the active pool
void	add(OutboundMessageState state, PeerState peer)	Short circuit the OutNetMessage, letting us send the establish complete message reliably.
void	add(PeerState peer, int size)	Add the peer to the list of peers wanting to transmit something.
(package private) void	dropPeer(PeerState peer)
List<UDPPacket>	getNextVolley()	Fetch all the packets for a message volley, blocking until there is a message which can be fully transmitted (or the transport is shut down).
(package private) void	nudge()	Wakes up the packet pusher thread.
void	shutdown()
void	startup()
boolean	waitForMoreAllowed()	Block until we allow more messages to be admitted to the active pool.

Methods inherited from class java.lang.Object

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

Field Details

MAX_VOLLEYS

static final int MAX_VOLLEYS

if we can handle more messages explicitly, set this to true

See Also:

• Constant Field Values

Constructor Details

OutboundMessageFragments

public OutboundMessageFragments(RouterContext ctx,
 UDPTransport transport,
 OutboundMessageFragments.ActiveThrottle throttle)

Method Details

startup

public void startup()

shutdown

public void shutdown()

dropPeer

void dropPeer(PeerState peer)

waitForMoreAllowed

public boolean waitForMoreAllowed()

Block until we allow more messages to be admitted to the active pool. This is called by the OutboundRefiller

Returns:

true if more messages are allowed

add

public void add(OutNetMessage msg)

Add a new message to the active pool

add

public void add(OutboundMessageState state,
 PeerState peer)

Short circuit the OutNetMessage, letting us send the establish complete message reliably. If you have multiple messages, use the list variant, so the messages may be bundled efficiently.

add

public void add(List<OutboundMessageState> states,
 PeerState peer)

Short circuit the OutNetMessage, letting us send multiple messages reliably and efficiently.

Since:

0.9.24

add

public void add(PeerState peer,
 int size)

Add the peer to the list of peers wanting to transmit something. This wakes up the packet pusher if it is sleeping. Avoid synchronization where possible. There are small chances of races. There are larger chances of adding the PeerState "behind" where the iterator is now... but these issues are the same as before concurrentification.

Parameters:

size - the minimum size we can send, or 0 to always notify

Since:

0.8.9

getNextVolley

public List<UDPPacket> getNextVolley()

Fetch all the packets for a message volley, blocking until there is a message which can be fully transmitted (or the transport is shut down). NOT thread-safe. Called by the PacketPusher thread only.

Returns:

null only on shutdown

nudge

void nudge()

Wakes up the packet pusher thread.

Since:

0.9.48