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2005-04-24 jrandom

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* Added a pool of PRNGs using a different synchronization technique,
      hopefully sufficient to work around IBM's PRNG bugs until we get our
      own Fortuna.
    * In the streaming lib, don't jack up the RTT on NACK, and have the window
      size bound the not-yet-ready messages to the peer, not the unacked
      message count (not sure yet whether this is worthwile).
    * Many additions to the messageHistory log.
    * Handle out of order tunnel fragment delivery (not an issue on the live
      net with TCP, but critical with UDP).
and for udp stuff:
* implemented tcp-esque rto code in the udp transport
* make sure we don't ACK too many messages at once
* transmit fragments in a simple (nonrandom) order so that we can more easily
  adjust timeouts/etc.
* let the active outbound pool grow dynamically if there are outbound slots to
  spare
* use a simple decaying bloom filter at the UDP level to drop duplicate resent
  packets.
This commit is contained in:
jrandom
2005-04-24 18:42:02 +00:00
committed by zzz
parent dae6be14b7
commit b2f0d17e94
25 changed files with 517 additions and 97 deletions
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3
apps/streaming/java/src/net/i2p/client/streaming/Connection.java
View File

@@ -152,7 +152,8 @@ public class Connection {
if (!_connected)
return false;
started = true;
if ( (_outboundPackets.size() >= _options.getWindowSize()) || (_activeResends > 0) ) {
if ( (_outboundPackets.size() >= _options.getWindowSize()) || (_activeResends > 0) ||
(_lastSendId - _highestAckedThrough > _options.getWindowSize()) ) {
if (writeExpire > 0) {
if (timeLeft <= 0) {
_log.error("Outbound window is full of " + _outboundPackets.size()

7
apps/streaming/java/src/net/i2p/client/streaming/ConnectionPacketHandler.java
View File

@@ -167,11 +167,14 @@ public class ConnectionPacketHandler {
// non-ack message payloads are queued in the MessageInputStream
packet.releasePayload();
}
//if (choke)
// con.fastRetransmit();
}
private boolean ack(Connection con, long ackThrough, long nacks[], Packet packet, boolean isNew, boolean choke) {
if ( (nacks != null) && (nacks.length > 0) )
con.getOptions().setRTT(con.getOptions().getRTT() + nacks.length*1000);
//if ( (nacks != null) && (nacks.length > 0) )
// con.getOptions().setRTT(con.getOptions().getRTT() + nacks.length*1000);
int numResends = 0;
List acked = con.ackPackets(ackThrough, nacks);