Merge "Improve native Git transport when following repository"

org.eclipse.jgit/src/org/eclipse/jgit/transport/BasePackFetchConnection.java

 		int havesSinceLastContinue = 0;
 		boolean receivedContinue = false;
 		boolean receivedAck = false;
+		boolean negotiate = true;
 
 		if (statelessRPC)
 			state.writeTo(out, null);
 
 		negotiateBegin();
-		SEND_HAVES: for (;;) {
+		SEND_HAVES: while (negotiate) {
 			final RevCommit c = walk.next();
 			if (c == null)
 				break SEND_HAVES;
 					receivedAck = true;
 					receivedContinue = true;
 					havesSinceLastContinue = 0;
+					if (anr == AckNackResult.ACK_READY)
+						negotiate = false;
 					break;
 				}
 

org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java

 		// create a pack at this point, let the client know so it stops
 		// telling us about its history.
 		//
+		boolean didOkToGiveUp = false;
 		for (int i = peerHas.size() - 1; i >= 0; i--) {
 			ObjectId id = peerHas.get(i);
 			if (walk.lookupOrNull(id) == null) {
+				didOkToGiveUp = true;
 				if (okToGiveUp()) {
 					switch (multiAck) {
 					case OFF:
 			}
 		}
 
+		if (multiAck == MultiAck.DETAILED && !didOkToGiveUp && okToGiveUp()) {
+			ObjectId id = peerHas.get(peerHas.size() - 1);
+			pckOut.writeString("ACK " + id.name() + " ready\n");
+		}
+
 		peerHas.clear();
 		return last;
 	}