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Bitcoin–Monero Cross-chain Atomic Swap
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Daniel Karzel 5d3060a2e6
More resilient `MoneroWalletRpc` startup in the harness 
Recently we se this problem on CI quite often:

```
 May 27 01:26:55.898  INFO testcontainers::core::wait_for_message: Found message after comparing 80 lines
May 27 01:27:00.858  INFO testcontainers::core::wait_for_message: Found message after comparing 2 lines
May 27 01:27:00.859  INFO monero_harness: Starting monerod: DQma_monerod
May 27 01:27:08.143  INFO testcontainers::core::wait_for_message: Found message after comparing 183 lines
May 27 01:27:08.204  INFO monero_harness: Starting miner wallet: miner
May 27 01:27:09.832  INFO testcontainers::core::wait_for_message: Found message after comparing 16 lines
May 27 01:27:12.261  INFO monero_harness: Starting wallet: alice
May 27 01:27:14.482  INFO testcontainers::core::wait_for_message: Found message after comparing 16 lines
thread 'alice_punishes_after_restart_if_bob_dead' panicked at 'called `Result::unwrap()` on an `Err` value: error sending request for url (http://127.0.0.1:49177/json_rpc): operation was canceled: connection closed before message completed
```

Given the message `connection closed before message completed` it is likely that the `monero-wallet-rpc` is not fully started yet.
Unfortunately we cannot wait to see a different message in the logs, because there are just no further deterministic messages after the one we are currently listening on.
to overcome this problem without extending testcontainers we introduce a retry mechanism when creating the wallet.
 		3 years ago
.cargo .cargo/config.toml for specifying linker 3 years ago
.github Add the arm CLI build to the release binaries 3 years ago
docs/asb Update ASB readme 3 years ago
monero-harness More resilient `MoneroWalletRpc` startup in the harness 3 years ago
monero-rpc Update metadata and remove outdated config files / READMEs 3 years ago
monero-wallet Introduce monero-wallet crate 3 years ago
swap fix typo 3 years ago
.gitignore Push cargo lock to git as we are building a binary 4 years ago
CHANGELOG.md Prepare release 0.6.0 3 years ago
Cargo.lock Prepare release 0.6.0 3 years ago
Cargo.toml Use tokio-tar from crates.io 3 years ago
LICENSE Change license to GPLv3 4 years ago
README.md Update the README for mainnet 3 years ago
bors.toml Move recovery commands in dedicated module 3 years ago
dprint.json Remove tokio-tar from workspace in favor of git dependency 3 years ago
rust-toolchain Add asb to release including ARM build 3 years ago
rustfmt.toml Change `imports_granularity` to module 3 years ago

README.md

XMR to BTC Atomic Swap

This repository hosts an MVP for atomically swapping BTC to XMR. It implements the protocol described in section 3 of this paper.

More information about the protocol in this presentation and this blog post.

Quick start - CLI

From version 0.6.0 onwards the software default to running on mainnet. It is recommended to try the software on testnet first, which can be achieved by providing the --testnet flag. This quickstart guide assumes that you are running the software on testnet (i.e. Bitcoin testnet3 and Monero stagenet):

  1. Download the latest swap binary release for your operating system
  2. Run the binary specifying the monero address where you wish to receive monero and the connection details of the seller: ./swap --testnet buy-xmr --receive-address <YOUR MONERO ADDRESS> --seller-peer-id <SELLERS PEER ID> --seller-addr <SELLERS MULTIADDRESS> You can generate a receive address using your monero wallet. The seller will provide you their peer id and multiaddress. We are running an asb instance on testnet. You can swap with to get familiar with the swap CLI. Our peer id is 12D3KooWCdMKjesXMJz1SiZ7HgotrxuqhQJbP5sgBm2BwP1cqThi and our multiaddress is /dnsaddr/xmr-btc-asb.coblox.tech
  3. Follow the instructions printed to the terminal

For running the software on mainnet you just omit the --testnet flag. Running on mainnet will automatically apply sane defaults. Be aware that this software is still early-stage. Make sure to check --help and understand how the cancel and refund commands work before running on mainnet. You are running this software at your own risk. As always we recommend: Verify, don't trust. All code is available in this repository.

How it works

This repository primarily hosts two components:

swap CLI

The swap CLI acts in the role of Bob and swaps BTC for XMR. See ./swap --help for a description of all commands. The main command is buy-xmr which automatically connects to an instance of asb.

asb service

asb is short for automated swap backend (we are open to suggestions for better names!). The service acts as the counter-party for the swap CLI in the role of Alice. It provides the CLI with a quote and the liquidity necessary for swapping BTC into XMR.

For details on how to run the ASB please refer to the ASB docs.

Contact

Feel free to reach out to us in the COMIT-Monero Matrix channel.