///<summary>Private: Generate changeTrust transaction with given parameters.</summary>
///<param name="account">Stellar account</param>
///<param name="asset">Stellar asset</param>
///<returns>Returns transaction.</returns>
private Stellar.Transaction Tx(Stellar.Account account, Stellar.Asset asset)
{
string assetXdr = asset.ToXdr().ToString();
string opXdrAmount = Stellar.Operation.ToXdrAmount(assetXdr).ToString();
var operation = new Stellar.ChangeTrustOperation.Builder(asset, opXdrAmount).Build();
return(new Stellar.Transaction.Builder(account).AddOperation(operation).Build());
}
///<summary>Add a cosigner to a given account.</summary>
///<param name="keypair">Account keypair</param>
///<param name="cosignerKeypair">Cosigner keypair</param>
///<param name="weight">Cosigner weight = 1 (default)</param>
///<returns>Returns submitted transaction response</returns>
public StellarResponses.SubmitTransactionResponse Call(
Stellar.KeyPair keypair,
Stellar.xdr.SignerKey cosignerKeypair,
int weight = 1
)
{
var client = new Client().HorizonClient;
var account = new Stellar.Account(keypair, null); // null sequnece number for now
var tx = this.Tx(account, cosignerKeypair, weight);
tx.Sign(account.KeyPair);
return(client.SubmitTransaction(tx).Result);
}
async private Task <Stellar.Transaction> GenerateSignedTransaction(Stellar.KeyPair keypair)
{
long randomSequence = (long)(99999999 - Math.Floor((decimal) new Random().Next() * 65536));
Stellar.Account account = new Stellar.Account(keypair, randomSequence);
Stellar.Transaction.Builder txBuilder = new Stellar.Transaction.Builder(account);
StellarResponses.AssetResponse asset = await new Library.Client().StellarAsset();
Stellar.Operation op = new Stellar.PaymentOperation.Builder(keypair, asset.Asset, "0.000001").Build();
Stellar.Transaction tx = txBuilder.AddOperation(op).Build();
tx.Sign(keypair);
return(Stellar.Transaction.FromEnvelopeXdr(tx.ToEnvelopeXdr()));
}
///<summary>Submit transaction</summary>
///<param name="buildFn">Callback to build the transaction</param>
///<returns>Promise that resolves or rejects with response of horizon</returns>
async public Task <StellarResponses.SubmitTransactionResponse> SubmitTx(Action <Stellar.Transaction.Builder> buildFn)
{
var account = new Stellar.Account(UserAccount().KeyPair(), UserAccount().Info().SequenceNumber);
var builder = new Stellar.Transaction.Builder(account);
buildFn(builder);
var tx = builder.Build();
tx.Sign(AppKeypair());
var response = await this.ClientInstance.SubmitTransaction(tx);
await this.Reload();
return(response);
}
///<summary>Private: Generate setOptions transaction with given parameters.</summary>
///<param name="account">Stellar account</param>
///<param name="cosignerKeypair">Cosigner keypair</param>
///<param name="weight">Cosigner weight</param>
///<returns>Returns new Stellar Transaction.</returns>
private Stellar.Transaction Tx(
Stellar.Account account,
Stellar.xdr.SignerKey cosignerKeypair,
int weight
)
{
var operation =
new Stellar.SetOptionsOperation.Builder()
.SetHighThreshold(10)
.SetLowThreshold(1)
.SetMasterKeyWeight(10)
.SetMediumThreshold(1)
.SetSigner(cosignerKeypair, weight)
.Build();
return(new Stellar.Transaction.Builder(account)
.AddOperation(operation)
.Build());
}
///<summary>Generates challenge transaction signed by developers private key.</summary>
///<param name="developerSecret">Developers secret seed</param>
///<param name="expireIn">Session expiration time in seconds from now. Default is Client.ChallengeExpiresIn.</param>
///<returns>Returns base64-encoded transaction envelope</returns>
public string Call(string developerSecret, int expireIn = 0)
{
if (expireIn == 0)
{
expireIn = Client.ChallengeExpiresIn;
}
var keypair = this.Keypair(developerSecret);
var account = new Stellar.Account(keypair, this.RandomSequence());
var operation =
new Stellar.PaymentOperation.Builder(keypair, new Stellar.AssetTypeNative(), "0.000001")
.SetSourceAccount(Stellar.KeyPair.Random())
.Build();
var tx = new Stellar.Transaction.Builder(account)
.AddMemo(this.Memo())
.AddTimeBounds(this.BuildTimeBounds(expireIn))
.AddOperation(operation)
.Build();
tx.Sign(keypair);
return(tx.ToEnvelopeXdrBase64());
}
public async Task TxCommitQuantumTest(int cursor, int amount, int asset, Type excpectedException)
{
context.AppState.State = ApplicationState.Ready;
long apex = context.QuantumStorage.CurrentApex;
var client1StartBalanceAmount = (long)0;
var account1 = context.AccountStorage.GetAccount(TestEnvironment.Client1KeyPair).Account;
var clientAccountBalance = account1.GetBalance(asset);
var withdrawalDest = KeyPair.Random();
var txHash = new byte[] { };
if (clientAccountBalance != null && amount > 0)
{
client1StartBalanceAmount = clientAccountBalance.Amount;
context.Constellation.TryFindAssetSettings(asset, out var assetSettings);
var account = new stellar_dotnet_sdk.Account(TestEnvironment.Client1KeyPair.AccountId, 1);
var txBuilder = new TransactionBuilder(account);
txBuilder.SetFee(10_000);
txBuilder.AddTimeBounds(new stellar_dotnet_sdk.TimeBounds(DateTimeOffset.UtcNow, new TimeSpan(0, 5, 0)));
txBuilder.AddOperation(
new PaymentOperation.Builder(withdrawalDest, assetSettings.ToAsset(), Amount.FromXdr(amount).ToString())
.SetSourceAccount((KeyPair)context.Constellation.Vault)
.Build()
);
var tx = txBuilder.Build();
txHash = tx.Hash();
var txV1 = tx.ToXdrV1();
var txStream = new XdrDataOutputStream();
stellar_dotnet_sdk.xdr.Transaction.Encode(txStream, txV1);
var accountWrapper = context.AccountStorage.GetAccount(TestEnvironment.Client1KeyPair);
var withdrawal = new WithdrawalRequest
{
Account = accountWrapper.Account.Id,
TransactionXdr = txStream.ToArray(),
RequestId = DateTime.UtcNow.Ticks,
AccountWrapper = accountWrapper
};
MessageEnvelope quantum = withdrawal.CreateEnvelope();
quantum.Sign(TestEnvironment.Client1KeyPair);
if (!context.IsAlpha)
{
quantum = new RequestQuantum {
Apex = ++apex, RequestEnvelope = quantum, Timestamp = DateTime.UtcNow.Ticks
}.CreateEnvelope();
quantum.Sign(TestEnvironment.AlphaKeyPair);
}
//create withdrawal
await context.QuantumHandler.HandleAsync(quantum);
}
var depositAmount = new Random().Next(10, 1000);
var ledgerNotification = new TxNotification
{
TxCursor = (uint)cursor,
Payments = new List <PaymentBase>
{
new Deposit
{
Amount = depositAmount,
Destination = TestEnvironment.Client1KeyPair,
Asset = asset
},
new Withdrawal
{
TransactionHash = txHash,
PaymentResult = PaymentResults.Success
}
}
};
var ledgerNotificationEnvelope = ledgerNotification.CreateEnvelope();
ledgerNotificationEnvelope.Sign(TestEnvironment.Auditor1KeyPair);
var ledgerCommitEnv = new TxCommitQuantum
{
Source = ledgerNotificationEnvelope,
Apex = ++apex
}.CreateEnvelope();
if (!context.IsAlpha)
{
var msg = ((TxCommitQuantum)ledgerCommitEnv.Message);
msg.Timestamp = DateTime.UtcNow.Ticks;
ledgerCommitEnv = msg.CreateEnvelope().Sign(TestEnvironment.AlphaKeyPair);
}
await AssertQuantumHandling(ledgerCommitEnv, excpectedException);
if (excpectedException == null)
{
Assert.AreEqual(context.TxCursorManager.TxCursor, ledgerNotification.TxCursor);
Assert.AreEqual(account1.GetBalance(asset).Liabilities, 0);
Assert.AreEqual(account1.GetBalance(asset).Amount, client1StartBalanceAmount - amount + depositAmount); //acc balance + deposit - withdrawal
}
}