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When throwing InsufficientMoneyException, the amount of satoshis missing is required. When the server requests too much value, it is stored so that implementations of the client has access to it.

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Simon de la Rouviere 2014-01-20 17:40:57 +02:00 committed by Mike Hearn
parent bd5c4e73e7
commit 4ca476ff35
1 changed files with 16 additions and 1 deletions
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17
core/src/main/java/com/google/bitcoin/protocols/channels/PaymentChannelClient.java
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@ -86,6 +86,9 @@ public class PaymentChannelClient implements IPaymentChannelClient {
// Information used during channel initialization to send to the server or check what the server sends to us
private final ECKey myKey;
private final BigInteger maxValue;
private BigInteger missing;
@GuardedBy("lock") private long minPayment;
@GuardedBy("lock") SettableFuture<BigInteger> increasePaymentFuture;
@ -127,6 +130,16 @@ public class PaymentChannelClient implements IPaymentChannelClient {
this.conn = checkNotNull(conn);
}
/**
* <p>Returns the amount of satoshis missing when a server requests too much value.</p>
*
* <p>When InsufficientMoneyException is thrown due to the server requesting too much value, an instance of
* PaymentChannelClient needs access to how many satoshis are missing.</p>
*/
public BigInteger getMissing() {
return missing;
}
@Nullable
@GuardedBy("lock")
private CloseReason receiveInitiate(Protos.Initiate initiate, BigInteger contractValue, Protos.Error.Builder errorBuilder) throws VerificationException, InsufficientMoneyException {
@ -144,9 +157,10 @@ public class PaymentChannelClient implements IPaymentChannelClient {
}
BigInteger minChannelSize = BigInteger.valueOf(initiate.getMinAcceptedChannelSize());
if (maxValue.compareTo(minChannelSize) < 0) {
if (contractValue.compareTo(minChannelSize) < 0) {
log.error("Server requested too much value");
errorBuilder.setCode(Protos.Error.ErrorCode.CHANNEL_VALUE_TOO_LARGE);
missing = minChannelSize.subtract(contractValue);
return CloseReason.SERVER_REQUESTED_TOO_MUCH_VALUE;
}
@ -157,6 +171,7 @@ public class PaymentChannelClient implements IPaymentChannelClient {
log.error("Server requested a min payment of {} but we expected {}", initiate.getMinPayment(), MIN_PAYMENT);
errorBuilder.setCode(Protos.Error.ErrorCode.MIN_PAYMENT_TOO_LARGE);
errorBuilder.setExpectedValue(MIN_PAYMENT);
missing = BigInteger.valueOf(initiate.getMinPayment() - MIN_PAYMENT);
return CloseReason.SERVER_REQUESTED_TOO_MUCH_VALUE;
}