Golang LightningWallet.PublishTransaction方法代碼示例

//.........這裏部分代碼省略.........
	// Additionally, the funding tx should have been populated.
	fundingTx := chanReservation.FinalFundingTx()
	if fundingTx == nil {
		t.Fatalf("funding transaction never created!")
	}

	// Their funds should also be filled in.
	if len(theirContribution.Inputs) != 1 {
		t.Fatalf("bob's outputs for funding tx not properly selected, have %v "+
			"outputs should have 2", len(theirContribution.Inputs))
	}
	if theirContribution.ChangeOutputs[0].Value != 2e8 {
		t.Fatalf("bob should have one change output with value 2e8"+
			"satoshis, is instead %v",
			theirContribution.ChangeOutputs[0].Value)
	}
	if theirContribution.MultiSigKey == nil {
		t.Fatalf("bob's key for multi-sig not found")
	}
	if theirContribution.CommitKey == nil {
		t.Fatalf("bob's key for commit tx not found")
	}
	if theirContribution.DeliveryAddress == nil {
		t.Fatalf("bob's final delivery address not found")
	}
	if theirContribution.RevocationKey == nil {
		t.Fatalf("bob's revocaiton key not found")
	}

	// TODO(roasbeef): account for current hard-coded commit fee,
	// need to remove bob all together
	chanCapacity := int64(10e8 + 5000)
	// Alice responds with her output, change addr, multi-sig key and signatures.
	// Bob then responds with his signatures.
	bobsSigs, err := bobNode.signFundingTx(fundingTx)
	if err != nil {
		t.Fatalf("unable to sign inputs for bob: %v", err)
	}
	commitSig, err := bobNode.signCommitTx(
		chanReservation.LocalCommitTx(),
		chanReservation.FundingRedeemScript(),
		chanCapacity)
	if err != nil {
		t.Fatalf("bob is unable to sign alice's commit tx: %v", err)
	}
	if err := chanReservation.CompleteReservation(bobsSigs, commitSig); err != nil {
		t.Fatalf("unable to complete funding tx: %v", err)
	}

	// At this point, the channel can be considered "open" when the funding
	// txn hits a "comfortable" depth.

	// The resulting active channel state should have been persisted to the DB.
	fundingSha := fundingTx.TxSha()
	channels, err := wallet.ChannelDB.FetchOpenChannels(bobNode.id)
	if err != nil {
		t.Fatalf("unable to retrieve channel from DB: %v", err)
	}
	if !bytes.Equal(channels[0].FundingOutpoint.Hash[:], fundingSha[:]) {
		t.Fatalf("channel state not properly saved")
	}

	// Assert that tha channel opens after a single block.
	lnc := assertChannelOpen(t, miner, uint32(numReqConfs),
		chanReservation.DispatchChan())

	// Now that the channel is open, execute a cooperative closure of the
	// now open channel.
	aliceCloseSig, _, err := lnc.InitCooperativeClose()
	if err != nil {
		t.Fatalf("unable to init cooperative closure: %v", err)
	}
	aliceCloseSig = append(aliceCloseSig, byte(txscript.SigHashAll))

	chanInfo := lnc.StateSnapshot()

	// Obtain bob's signature for the closure transaction.
	witnessScript := lnc.FundingWitnessScript
	fundingOut := lnc.ChannelPoint()
	fundingTxIn := wire.NewTxIn(fundingOut, nil, nil)
	bobCloseTx := lnwallet.CreateCooperativeCloseTx(fundingTxIn,
		chanInfo.RemoteBalance, chanInfo.LocalBalance,
		lnc.RemoteDeliveryScript, lnc.LocalDeliveryScript,
		false)
	bobSig, err := bobNode.signCommitTx(bobCloseTx, witnessScript, int64(lnc.Capacity))
	if err != nil {
		t.Fatalf("unable to generate bob's signature for closing tx: %v", err)
	}

	// Broadcast the transaction to the network. This transaction should
	// be accepted, and found in the next mined block.
	ourKey := chanReservation.OurContribution().MultiSigKey.SerializeCompressed()
	theirKey := chanReservation.TheirContribution().MultiSigKey.SerializeCompressed()
	witness := lnwallet.SpendMultiSig(witnessScript, ourKey, aliceCloseSig,
		theirKey, bobSig)
	bobCloseTx.TxIn[0].Witness = witness
	if err := wallet.PublishTransaction(bobCloseTx); err != nil {
		t.Fatalf("broadcast of close tx rejected: %v", err)
	}
}