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Quick hack to not crash when connected to a node that has less of the chain than we do. Real fix must wait for PeerGroup to land. Resolves issue 44.

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This commit is contained in:
Mike Hearn 2011-07-13 20:52:08 +00:00
parent ea8cbd7465
commit 1a4e2e67d1
1 changed files with 6 additions and 1 deletions
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7
src/com/google/bitcoin/core/Peer.java
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@ -327,9 +327,14 @@ public class Peer {
if (chainHeight <= 0) {
// This should not happen because we shouldn't have given the user a Peer that is to another client-mode
// node. If that happens it means the user overrode us somewhere.
throw new RuntimeException("Peer does not have block chain");
throw new RuntimeException("Peer does not have block chain");
}
int blocksToGet = chainHeight - blockChain.getChainHead().getHeight();
if (blocksToGet < 0) {
// This peer has fewer blocks than we do. It isn't usable.
// TODO: We can't do the right thing here until Mirons patch lands. For now just return a zero latch.
return new CountDownLatch(0);
}
chainCompletionLatch = new CountDownLatch(blocksToGet);
if (blocksToGet > 0) {
// When we just want as many blocks as possible, we can set the target hash to zero.