private async Task <bool> TryConfirmConnectionAsync(IEnumerable <long> amountsToRequest, IEnumerable <long> vsizesToRequest, CancellationToken cancellationToken)
{
var inputVsize = Coin.ScriptPubKey.EstimateInputVsize();
var totalFeeToPay = FeeRate.GetFee(Coin.ScriptPubKey.EstimateInputVsize());
var totalAmount = Coin.Amount;
var effectiveAmount = totalAmount - totalFeeToPay;
if (effectiveAmount <= Money.Zero)
{
throw new InvalidOperationException($"Round({ RoundId }), Alice({ AliceId}): Adding this input is uneconomical.");
}
var response = await ArenaClient
.ConfirmConnectionAsync(
RoundId,
AliceId,
amountsToRequest,
vsizesToRequest,
IssuedAmountCredentials,
IssuedVsizeCredentials,
cancellationToken)
.ConfigureAwait(false);
IssuedAmountCredentials = response.IssuedAmountCredentials;
IssuedVsizeCredentials = response.IssuedVsizeCredentials;
var isConfirmed = response.Value;
return(isConfirmed);
}
private async Task <bool> ConfirmConnectionAsync()
{
var inputWeight = 4 * Constants.P2wpkhInputVirtualSize;
var inputRemainingWeights = new[] { (long)ArenaClient.ProtocolMaxWeightPerAlice - Coins.Count() * inputWeight };
var amountCredentials = ArenaClient.AmountCredentialClient.Credentials;
var totalFeeToPay = FeeRate.GetFee(Coins.Sum(c => c.ScriptPubKey.EstimateInputVsize()));
var totalAmount = Coins.Sum(coin => coin.Amount);
if (totalFeeToPay > totalAmount)
{
throw new InvalidOperationException($"Round({ RoundId }), Alice({ AliceId}): Not enough funds to pay for the fees.");
}
var amountsToRequest = new[] { totalAmount - totalFeeToPay };
return(await ArenaClient
.ConfirmConnectionAsync(
RoundId,
AliceId,
inputRemainingWeights,
amountCredentials.ZeroValue.Take(ArenaClient.ProtocolCredentialNumber),
amountsToRequest)
.ConfigureAwait(false));
}
public AliceClient(Guid aliceId, Guid roundId, ArenaClient arenaClient, IEnumerable <Coin> coins, FeeRate feeRate)
{
AliceId = aliceId;
RoundId = roundId;
ArenaClient = arenaClient;
Coins = coins;
FeeRate = feeRate;
}
public AliceClient(uint256 roundId, ArenaClient arenaClient, Coin coin, FeeRate feeRate, BitcoinSecret bitcoinSecret)
{
AliceId = CalculateHash(coin, bitcoinSecret, roundId);
RoundId = roundId;
ArenaClient = arenaClient;
Coin = coin;
FeeRate = feeRate;
BitcoinSecret = bitcoinSecret;
RealAmountCredentials = Array.Empty <Credential>();
RealVsizeCredentials = Array.Empty <Credential>();
}
public async Task RegisterInputAsync(CancellationToken cancellationToken)
{
var response = await ArenaClient.RegisterInputAsync(RoundId, Coin.Outpoint, BitcoinSecret.PrivateKey, cancellationToken).ConfigureAwait(false);
var remoteAliceId = response.Value;
if (AliceId != remoteAliceId)
{
throw new InvalidOperationException($"Round ({RoundId}), Local Alice ({AliceId}) was computed as {remoteAliceId}");
}
RealAmountCredentials = response.RealAmountCredentials;
RealVsizeCredentials = response.RealVsizeCredentials;
Logger.LogInfo($"Round ({RoundId}), Alice ({AliceId}): Registered an input.");
}
public static async Task <AliceClient> CreateRegisterAndConfirmInputAsync(
RoundState roundState,
ArenaClient arenaClient,
SmartCoin coin,
BitcoinSecret bitcoinSecret,
RoundStateUpdater roundStatusUpdater,
CancellationToken cancellationToken)
{
AliceClient?aliceClient = null;
try
{
aliceClient = await RegisterInputAsync(roundState, arenaClient, coin, bitcoinSecret, cancellationToken).ConfigureAwait(false);
await aliceClient.ConfirmConnectionAsync(roundStatusUpdater, cancellationToken).ConfigureAwait(false);
}
catch (OperationCanceledException)
{
if (aliceClient is { })
public static async Task <AliceClient> CreateNewAsync(
ArenaClient arenaClient,
IEnumerable <Coin> coinsToRegister,
BitcoinSecret bitcoinSecret,
Guid roundId,
uint256 roundHash,
FeeRate feeRate)
{
IEnumerable <Money> amounts = coinsToRegister.Select(c => c.Amount);
IEnumerable <OutPoint> outPoints = coinsToRegister.Select(c => c.Outpoint);
IEnumerable <Key> keys = Enumerable.Repeat(bitcoinSecret.PrivateKey, coinsToRegister.Count());
Guid aliceId = await arenaClient.RegisterInputAsync(amounts, outPoints, keys, roundId, roundHash).ConfigureAwait(false);
AliceClient client = new(aliceId, roundId, arenaClient, coinsToRegister, feeRate);
Logger.LogInfo($"Round ({roundId}), Alice ({aliceId}): Registered {amounts.Count()} inputs.");
return(client);
}
private AliceClient(
Guid aliceId,
RoundState roundState,
ArenaClient arenaClient,
SmartCoin coin,
BitcoinSecret bitcoinSecret,
IEnumerable <Credential> issuedAmountCredentials,
IEnumerable <Credential> issuedVsizeCredentials)
{
AliceId = aliceId;
RoundId = roundState.Id;
ArenaClient = arenaClient;
SmartCoin = coin;
FeeRate = roundState.FeeRate;
BitcoinSecret = bitcoinSecret;
IssuedAmountCredentials = issuedAmountCredentials;
IssuedVsizeCredentials = issuedVsizeCredentials;
MaxVsizeAllocationPerAlice = roundState.MaxVsizeAllocationPerAlice;
ConfirmationTimeout = roundState.ConnectionConfirmationTimeout / 2;
}
public static async Task <AliceClient> CreateRegisterAndConfirmInputAsync(
RoundState roundState,
ArenaClient arenaClient,
SmartCoin coin,
BitcoinSecret bitcoinSecret,
Key identificationKey,
RoundStateUpdater roundStatusUpdater,
CancellationToken cancellationToken)
{
AliceClient?aliceClient = null;
try
{
aliceClient = await RegisterInputAsync(roundState, arenaClient, coin, bitcoinSecret, identificationKey, cancellationToken).ConfigureAwait(false);
await aliceClient.ConfirmConnectionAsync(roundStatusUpdater, cancellationToken).ConfigureAwait(false);
Logger.LogInfo($"Round ({aliceClient.RoundId}), Alice ({aliceClient.AliceId}): Connection successfully confirmed.");
}
catch (OperationCanceledException)
{
if (aliceClient is { })
private async Task <bool> TryConfirmConnectionAsync(long vsizeAllocationToRequest, CancellationToken cancellationToken)
{
var inputVsize = Coin.ScriptPubKey.EstimateInputVsize();
var vsizesToRequest = new[] { vsizeAllocationToRequest - inputVsize };
var totalFeeToPay = FeeRate.GetFee(Coin.ScriptPubKey.EstimateInputVsize());
var totalAmount = Coin.Amount;
var effectiveAmount = totalAmount - totalFeeToPay;
if (effectiveAmount <= Money.Zero)
{
throw new InvalidOperationException($"Round({ RoundId }), Alice({ AliceId}): Not enough funds to pay for the fees.");
}
var amountsToRequest = new[] { effectiveAmount.Satoshi };
var response = await ArenaClient
.ConfirmConnectionAsync(
RoundId,
AliceId,
amountsToRequest,
vsizesToRequest,
RealAmountCredentials,
RealVsizeCredentials,
cancellationToken)
.ConfigureAwait(false);
var isConfirmed = response.Value;
if (isConfirmed)
{
RealAmountCredentials = response.RealAmountCredentials;
RealVsizeCredentials = response.RealVsizeCredentials;
}
return(isConfirmed);
}
public BobClient(uint256 roundId, ArenaClient arenaClient)
{
RoundId = roundId;
ArenaClient = arenaClient;
}
public BobClient(Guid roundId, ArenaClient arenaClient)
{
RoundId = roundId;
ArenaClient = arenaClient;
}
public async Task SignTransactionAsync(BitcoinSecret bitcoinSecret, Transaction unsignedCoinJoin)
{
await ArenaClient.SignTransactionAsync(RoundId, Coins, bitcoinSecret, unsignedCoinJoin).ConfigureAwait(false);
Logger.LogInfo($"Round ({RoundId}), Alice ({AliceId}): Posted {Coins.Count()} signatures.");
}
public async Task RemoveInputAsync()
{
await ArenaClient.RemoveInputAsync(RoundId, AliceId).ConfigureAwait(false);
Logger.LogInfo($"Round ({RoundId}), Alice ({AliceId}): Inputs removed.");
}
public async Task SignTransactionAsync(Transaction unsignedCoinJoin, CancellationToken cancellationToken)
{
await ArenaClient.SignTransactionAsync(RoundId, Coin, BitcoinSecret, unsignedCoinJoin, cancellationToken).ConfigureAwait(false);
Logger.LogInfo($"Round ({RoundId}), Alice ({AliceId}): Posted a signature.");
}
public async Task ReadyToSignAsync(CancellationToken cancellationToken)
{
await ArenaClient.ReadyToSignAsync(RoundId, AliceId, BitcoinSecret.PrivateKey, cancellationToken).ConfigureAwait(false);
Logger.LogInfo($"Round ({RoundId}), Alice ({AliceId}): Ready to sign.");
}