2005-02-24 jrandom

* Cache temporary memory allocation in the DSA's SHA1 impl, and the packet
      data in the streaming lib.
    * Fixed a streaming lib bug where the connection initiator would fail the
      stream if the ACK to their SYN was lost.

apps/streaming/java/src/net/i2p/client/streaming/PacketQueue.java

@@ -25,6 +25,7 @@ class PacketQueue {
     private I2PSession _session;
     private ConnectionManager _connectionManager;
     private ByteCache _cache = ByteCache.getInstance(64, 36*1024);
+    private ByteCache _packetCache = ByteCache.getInstance(128, Packet.MAX_PAYLOAD_SIZE);
     
     public PacketQueue(I2PAppContext context, I2PSession session, ConnectionManager mgr) {
         _context = context;
@@ -125,6 +126,11 @@ class PacketQueue {
             String suffix = (c != null ? "wsize " + c.getOptions().getWindowSize() : null);
             _connectionManager.getPacketHandler().displayPacket(packet, "SEND", suffix);
         }
+        
+        if ( (packet.getSequenceNum() == 0) && (!packet.isFlagSet(Packet.FLAG_SYNCHRONIZE)) ) {
+            // ack only, so release it asap
+            _packetCache.release(packet.getPayload());
+        }
     }
     
 }