public void CanCreateAccept()
{
var offer = Parse <Messages.Offer>("Data/Offer2.json");
var builder = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var fundingInputKey = new Key();
PSBT fundPSBT = GetFundingPSBT(fundingInputKey, Money.Coins(0.4m));
Assert.True(PSBTFundingTemplate.TryParse(fundPSBT.ToBase64(), fundPSBT.Network, out var template));
var accept = builder.Accept(offer, template);
builder = new DLCTransactionBuilder(true, offer, accept, null, Network.RegTest);
Assert.True(builder.VerifyRemoteCetSigs());
Assert.True(builder.VerifyRemoteRefundSignature());
}
public void FullExchange2()
{
var initiatorInputKey = new Key();
var acceptorInputKey = new Key();
var fund1 = GetFundingPSBT(initiatorInputKey, Money.Coins(0.6m));
var fund2 = GetFundingPSBT(acceptorInputKey, Money.Coins(0.4m));
var initiator = new DLCTransactionBuilder(true, null, null, null, Network.RegTest);
var acceptor = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var oracleInfo = OracleInfo.Parse("156c7d1c7922f0aa1168d9e21ac77ea88bbbe05e24e70a08bbe0519778f2e5daea3a68d8749b81682513b0479418d289d17e24d4820df2ce979f1a56a63ca525");
var offer = initiator.Offer(PSBTFundingTemplate.Parse(fund1), oracleInfo,
ContractInfo.CreateContract(
("Republicans_win", Money.Coins(1.0m)),
("Democrats_win", Money.Coins(0m)),
("other", Money.Coins(0.6m))), new Timeouts()
{
ContractMaturity = 100,
ContractTimeout = 200
});
var accept = acceptor.Accept(offer, PSBTFundingTemplate.Parse(fund2));
initiator.VerifySign(accept);
var fundPSBT = initiator.BuildFundingPSBT();
fundPSBT.SignWithKeys(initiatorInputKey);
var sign = initiator.EndSign(fundPSBT);
acceptor.VerifySign(sign);
fundPSBT = acceptor.BuildFundingPSBT();
fundPSBT.SignWithKeys(acceptorInputKey);
var psbt = acceptor.CombineFunding(fundPSBT);
psbt = psbt.Finalize();
var fullyVerified = psbt.ExtractTransaction();
foreach (var i in fullyVerified.Inputs)
{
Assert.NotNull(i.WitScript);
}
var cet = initiator.BuildCET(offer.ContractInfo[0].Outcome);
var keyBytes = Encoders.Hex.DecodeData("39eabd151030f4f2d518fb8a8d00f679aa9e034c66263032a1245a04cfbc592b");
//Array.Reverse(keyBytes);
var oracleSecret = new Key(keyBytes);
initiator.BuildSignedCET(oracleSecret);
}
public virtual void FillFromTemplateFunding(PSBTFundingTemplate fundingTemplate, PubKey fundingKey)
{
FundingInputs = fundingTemplate.FundingCoins
.Select(input => new FundingInput()
{
Outpoint = input.Outpoint,
Output = input.TxOut
}).ToArray();
ChangeAddress = fundingTemplate.Change?.GetDestinationAddress(fundingTemplate.Network) ?? throw new InvalidOperationException("No change address output found");
PubKeys = new PubKeyObject()
{
PayoutAddress = fundingTemplate.PayoutAddress.GetDestinationAddress(fundingTemplate.Network) ?? throw new InvalidOperationException("No payout address output found"),
FundingKey = fundingKey
};
TotalCollateral = fundingTemplate.Collateral;
}
}
public Offer Offer(PSBTFundingTemplate fundingTemplate, OracleInfo oracleInfo, ContractInfo[] contractInfo, Timeouts timeouts)
{
if (!isInitiator)
{
throw new InvalidOperationException("The acceptor can't initiate an offer");
}
var fundingKey = this.FundingKey ?? new Key();
Offer offer = new Offer()
{
OracleInfo = oracleInfo,
ContractInfo = contractInfo,
Timeouts = timeouts
};
offer.FillFromTemplateFunding(fundingTemplate, fundingKey.PubKey);
this.FundingKey = fundingKey;
this.OracleInfo = oracleInfo;
FillStateFrom(offer);
return(offer);
}
public Accept Accept(Offer offer,
PSBTFundingTemplate fundingTemplate)
{
if (isInitiator)
{
throw new InvalidOperationException("The initiator can't accept");
}
if (fundingTemplate == null)
{
throw new ArgumentNullException(nameof(fundingTemplate));
}
this.FillStateFrom(offer);
this.FundingKey = this.FundingKey ?? new Key();
Accept accept = new Accept();
accept.FillFromTemplateFunding(fundingTemplate, FundingKey.PubKey);
FillStateFrom(accept);
accept.CetSigs = CreateCetSigs();
accept.EventId = "14965dcd10a1f0464c4c5cf7f2e9c67b2bcc6f8a971ccc647d7fec1c885f3afe";
//accept.EventId = CalculateEventId();
return(accept);
}
public static AcceptorTest Open(string folder, Network network)
{
var settings = network == Network.RegTest ? Settings : TestnetSettings;
AcceptorTest t = new AcceptorTest();
var fundingOverride = Path.Combine(folder, "FundingOverride.hex");
if (File.Exists(fundingOverride))
{
t.FundingOverride = Transaction.Parse(File.ReadAllText(fundingOverride), network);
}
t.Offer = Parse <Offer>(Path.Combine(folder, "Offer.json"), settings);
t.Sign = Parse <Sign>(Path.Combine(folder, "Sign.json"), settings);
var attestation = Path.Combine(folder, "OracleAttestation.hex");
if (File.Exists(attestation))
{
t.OracleAttestation = new Key(Encoders.Hex.DecodeData(File.ReadAllText(attestation)));
}
t.Builder = new DLCTransactionBuilder(false, null, null, null, network);
t.FundingTemplate = PSBTFundingTemplate.Parse(File.ReadAllText(Path.Combine(folder, "FundingTemplate.psbt")), network);
return(t);
}
public void FullExchange()
{
var offerExample = Parse <Messages.Offer>("Data/Offer2.json");
var initiatorInputKey = new Key();
var acceptorInputKey = new Key();
var fund1 = GetFundingPSBT(initiatorInputKey, Money.Coins(0.6m));
var fund2 = GetFundingPSBT(acceptorInputKey, Money.Coins(0.4m));
var initiator = new DLCTransactionBuilder(true, null, null, null, Network.RegTest);
var acceptor = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var offer = initiator.Offer(PSBTFundingTemplate.Parse(fund1), offerExample.OracleInfo, offerExample.ContractInfo, offerExample.Timeouts);
var accept = acceptor.Accept(offer, PSBTFundingTemplate.Parse(fund2));
initiator.VerifySign(accept);
var fundPSBT = initiator.BuildFundingPSBT();
fundPSBT.SignWithKeys(initiatorInputKey);
var sign = initiator.EndSign(fundPSBT);
acceptor.VerifySign(sign);
fundPSBT = acceptor.BuildFundingPSBT();
fundPSBT.SignWithKeys(acceptorInputKey);
fundPSBT = acceptor.CombineFunding(fundPSBT);
fundPSBT = fundPSBT.Finalize();
var fullyVerified = fundPSBT.ExtractTransaction();
foreach (var i in fullyVerified.Inputs)
{
Assert.NotNull(i.WitScript);
}
if (fundPSBT.TryGetEstimatedFeeRate(out var estimated))
{
Assert.True(estimated > new FeeRate(1.0m), "Fee Rate of the funding PSBT are too low");
}
}
public override void FillFromTemplateFunding(PSBTFundingTemplate fundingTemplate, PubKey fundingKey)
{
FeeRate = fundingTemplate.FeeRate;
base.FillFromTemplateFunding(fundingTemplate, fundingKey);
}
