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Improve TRANSACTION_SIGNATURES handling in Controller.

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Don't disconnect peers that fail to send a requested transaction,
as they may no longer have it. e.g. transaction might have expired
or become invalid.

For some other cases, e.g. we have transaction already, move on to
requesting the next transaction instead of giving up on the list.
This commit is contained in:
catbref 2019-06-17 10:30:57 +01:00
parent b48f671774
commit 5acc92ef26
1 changed files with 8 additions and 6 deletions
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14
src/main/java/org/qora/controller/Controller.java
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@ -738,15 +738,16 @@ public class Controller extends Thread {
// Do we have it already? (Before requesting transaction data itself)
if (repository.getTransactionRepository().exists(signature)) {
LOGGER.trace(String.format("Ignoring existing transaction %s from peer %s", Base58.encode(signature), peer));
break;
continue;
}
// Fetch actual transaction data from peer
Message getTransactionMessage = new GetTransactionMessage(signature);
Message responseMessage = peer.getResponse(getTransactionMessage);
if (responseMessage == null || !(responseMessage instanceof TransactionMessage)) {
peer.disconnect("failed to fetch unconfirmed transaction");
break;
// Maybe peer no longer has this transaction
LOGGER.trace(String.format("Peer %s didn't send transaction %s", peer, Base58.encode(signature)));
continue;
}
TransactionMessage transactionMessage = (TransactionMessage) responseMessage;
@ -756,24 +757,25 @@ public class Controller extends Thread {
// Check signature
if (!transaction.isSignatureValid()) {
LOGGER.trace(String.format("Ignoring %s transaction %s with invalid signature from peer %s", transactionData.getType().name(), Base58.encode(transactionData.getSignature()), peer));
break;
continue;
}
ValidationResult validationResult = transaction.importAsUnconfirmed();
if (validationResult == ValidationResult.TRANSACTION_ALREADY_EXISTS) {
LOGGER.trace(String.format("Ignoring existing transaction %s from peer %s", Base58.encode(transactionData.getSignature()), peer));
break;
continue;
}
if (validationResult == ValidationResult.NO_BLOCKCHAIN_LOCK) {
LOGGER.trace(String.format("Couldn't lock blockchain to import unconfirmed transaction %s from peer %s", Base58.encode(transactionData.getSignature()), peer));
// Some other thread (e.g. Synchronizer) might have blockchain lock for a while so might as well give up for now
break;
}
if (validationResult != ValidationResult.OK) {
LOGGER.trace(String.format("Ignoring invalid (%s) %s transaction %s from peer %s", validationResult.name(), transactionData.getType().name(), Base58.encode(transactionData.getSignature()), peer));
break;
continue;
}
LOGGER.debug(String.format("Imported %s transaction %s from peer %s", transactionData.getType().name(), Base58.encode(transactionData.getSignature()), peer));