Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

fix: Mock mainnet begin block deployment fix btc duplicate payment #1259

Merged
merged 2 commits into from
Oct 10, 2023
Merged

fix: Mock mainnet begin block deployment fix btc duplicate payment #1259

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
75a106b
special handling to avoid duplicate payment on bitcoin outbound nonce 0
ws4charlie Oct 9, 2023
62a367e
use cctx amount instead of txResult's amount because it's not availab…
ws4charlie Oct 9, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions zetaclient/bitcoin_client.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -348,6 +348,15 @@ func (ob *BitcoinChainClient) IsSendOutTxProcessed(sendHash string, nonce uint64
if !broadcasted {
return false, false, nil
}
// If the broadcasted outTx is nonce 0, just wait for inclusion and don't schedule more keysign
// Schedule more than one keysign for nonce 0 can lead to duplicate payments.
// One purpose of nonce mark UTXO is to avoid duplicate payment based on the fact that Bitcoin
// prevents double spending of same UTXO. However, for nonce 0, we don't have a prior nonce (e.g., -1)
// for the signer to check against when making the payment. Signer treats nonce 0 as a special case in downstream code.
if nonce == 0 {
return true, false, nil
}

// Get original cctx parameters
params, err := ob.GetPendingCctxParams(nonce)
if err != nil {
Expand Down