public void FillStateFrom(Offer?offer)
{
if (offer is null)
{
return;
}
s.OffererInputs = offer.FundingInputs;
s.OffererChange = offer.ChangeAddress?.ScriptPubKey;
s.OracleInfo = offer.OracleInfo;
s.Timeouts = offer.Timeouts;
s.ContractId = offer.GetTemporaryContractId();
s.Offerer ??= new Party();
if (offer.ContractInfo is ContractInfo[] c &&
c.Length > 0 &&
offer.TotalCollateral is Money)
{
s.OffererPayoffs = DiscretePayoffs.CreateFromContractInfo(offer.ContractInfo, offer.TotalCollateral);
}
s.Offerer.VSizes = new VSizeCalculator(offer).Calculate();
s.Offerer.Collateral = offer.TotalCollateral ?? s.OffererPayoffs?.CalculateMinimumCollateral();
s.Offerer.FundPubKey = offer.PubKeys?.FundingKey;
s.Offerer.PayoutDestination = offer.PubKeys?.PayoutAddress?.ScriptPubKey;
s.FeeRate = offer.FeeRate;
}
public void CanConvertContractInfoToPayoff()
{
var payoffs = new DiscretePayoffs();
payoffs.Add(new DiscreteOutcome("a"), Money.Coins(5.0m));
payoffs.Add(new DiscreteOutcome("b"), Money.Coins(-5.0m));
payoffs.Add(new DiscreteOutcome("c"), Money.Coins(-2.0m));
Assert.Equal(Money.Coins(5.0m), payoffs.CalculateMinimumCollateral());
var ci = payoffs.ToContractInfo(payoffs.CalculateMinimumCollateral());
Assert.Equal(Money.Coins(10.0m), ci[0].Payout);
Assert.Equal(Money.Coins(0m), ci[1].Payout);
Assert.Equal(Money.Coins(3.0m), ci[2].Payout);
payoffs = DiscretePayoffs.CreateFromContractInfo(ci, Money.Coins(5.0m));
Assert.Equal(Money.Coins(5.0m), payoffs[0].Reward);
Assert.Equal(Money.Coins(-5.0m), payoffs[1].Reward);
Assert.Equal(Money.Coins(-2.0m), payoffs[2].Reward);
}
public void FullExchange()
{
var offerExample = Parse <Messages.Offer>("Data/Offer2.json");
var offerKey = new Key();
var acceptKey = new Key();
var initiatorInputKey = new Key();
var acceptorInputKey = new Key();
var initiator = new DLCTransactionBuilder(true, null, null, null, Network.RegTest);
var requiredFund = initiator.Offer(offerExample.OracleInfo.PubKey,
offerExample.OracleInfo.RValue,
DiscretePayoffs.CreateFromContractInfo(offerExample.ContractInfo, offerExample.TotalCollateral,
new[] { new DiscreteOutcome("Republicans_win"), new DiscreteOutcome("Democrats_win"), new DiscreteOutcome("other") }),
offerExample.Timeouts);
var fund1 = GetFundingPSBT(initiatorInputKey, requiredFund);
var offer = initiator.FundOffer(offerKey, fund1);
var acceptor = new DLCTransactionBuilder(false, null, null, null, Network.RegTest);
var acceptorPayoff = acceptor.Accept(offer);
var fund2 = GetFundingPSBT(acceptorInputKey, acceptorPayoff.CalculateMinimumCollateral());
var accept = acceptor.FundAccept(acceptKey, fund2);
initiator.Sign1(accept);
var fundPSBT = initiator.GetFundingPSBT();
fundPSBT.SignWithKeys(initiatorInputKey);
var sign = initiator.Sign2(offerKey, fundPSBT);
acceptor.Finalize1(sign);
fundPSBT = acceptor.GetFundingPSBT();
fundPSBT.SignWithKeys(acceptorInputKey);
var fullyVerified = acceptor.Finalize(fundPSBT);
foreach (var i in fullyVerified.Inputs)
{
Assert.NotNull(i.WitScript);
}
fundPSBT = acceptor.GetFundingPSBT();
if (fundPSBT.TryGetEstimatedFeeRate(out var estimated))
{
Assert.True(estimated > new FeeRate(1.0m), "Fee Rate of the funding PSBT are too low");
}
}
