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Zero-fee commitments support #660

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f51fd13
Only pass TRUC packages as multi-transaction vecs
tankyleo May 27, 2026
529542c
Sort packages received via `BroadcasterInterface`
tankyleo May 27, 2026
2f438cc
Use a patched blockstream-electrs in CI
tankyleo May 28, 2026
9bc87c6
Switch cln lnd and eclair interop tests to esplora
tankyleo May 28, 2026
9bf8af7
Check that the backend supports `submitpackage`
tankyleo May 28, 2026
187f632
Submit TRUC packages via all chain sources
tankyleo Oct 24, 2025
e9172a2
Include 0FC channels in anchor channel checks
tankyleo Oct 29, 2025
be92c30
Negotiate 0FC channels if the anchor config is set
tankyleo Oct 13, 2025
6bbe8da
f: add a timeout for rpc `get_node_version`
tankyleo Jun 13, 2026
954a150
f: return `ChainSourceNotSupported` when chain source does not suppor…
tankyleo Jun 13, 2026
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13 changes: 9 additions & 4 deletions .github/workflows/benchmarks.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -29,13 +29,18 @@ jobs:
uses: actions/cache@v5
with:
path: bin/electrs-${{ runner.os }}-${{ runner.arch }}
key: electrs-${{ runner.os }}-${{ runner.arch }}
- name: Download bitcoind/electrs
if: "(steps.cache-bitcoind.outputs.cache-hit != 'true' || steps.cache-electrs.outputs.cache-hit != 'true')"
key: electrs-submit-package-${{ runner.os }}-${{ runner.arch }}
- name: Download bitcoind
if: "steps.cache-bitcoind.outputs.cache-hit != 'true'"
run: |
source ./scripts/download_bitcoind_electrs.sh
source ./scripts/download_bitcoind.sh
mkdir -p bin
mv "$BITCOIND_EXE" bin/bitcoind-${{ runner.os }}-${{ runner.arch }}
- name: Download electrs
if: "steps.cache-electrs.outputs.cache-hit != 'true'"
run: |
source ./scripts/build_electrs.sh
mkdir -p bin
mv "$ELECTRS_EXE" bin/electrs-${{ runner.os }}-${{ runner.arch }}
- name: Set bitcoind/electrs environment variables
run: |
Expand Down
13 changes: 9 additions & 4 deletions .github/workflows/hrn-integration.yml
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Expand Up @@ -27,13 +27,18 @@ jobs:
uses: actions/cache@v4
with:
path: bin/electrs-${{ runner.os }}-${{ runner.arch }}
key: electrs-${{ runner.os }}-${{ runner.arch }}
- name: Download bitcoind/electrs
if: "steps.cache-bitcoind.outputs.cache-hit != 'true' || steps.cache-electrs.outputs.cache-hit != 'true'"
key: electrs-submit-package-${{ runner.os }}-${{ runner.arch }}
- name: Download bitcoind
if: "steps.cache-bitcoind.outputs.cache-hit != 'true'"
run: |
source ./scripts/download_bitcoind_electrs.sh
source ./scripts/download_bitcoind.sh
mkdir -p bin
mv "$BITCOIND_EXE" bin/bitcoind-${{ runner.os }}-${{ runner.arch }}
- name: Download electrs
if: "steps.cache-electrs.outputs.cache-hit != 'true'"
run: |
source ./scripts/build_electrs.sh
mkdir -p bin
mv "$ELECTRS_EXE" bin/electrs-${{ runner.os }}-${{ runner.arch }}
- name: Set bitcoind/electrs environment variables
run: |
Expand Down
13 changes: 9 additions & 4 deletions .github/workflows/postgres-integration.yml
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Expand Up @@ -43,13 +43,18 @@ jobs:
uses: actions/cache@v4
with:
path: bin/electrs-${{ runner.os }}-${{ runner.arch }}
key: electrs-esplora_a33e97e1-${{ runner.os }}-${{ runner.arch }}
- name: Download bitcoind/electrs
if: "steps.cache-bitcoind.outputs.cache-hit != 'true' || steps.cache-electrs.outputs.cache-hit != 'true'"
key: electrs-submit-package-${{ runner.os }}-${{ runner.arch }}
- name: Download bitcoind
if: "steps.cache-bitcoind.outputs.cache-hit != 'true'"
run: |
source ./scripts/download_bitcoind_electrs.sh
source ./scripts/download_bitcoind.sh
mkdir -p bin
mv "$BITCOIND_EXE" bin/bitcoind-${{ runner.os }}-${{ runner.arch }}
- name: Download electrs
if: "steps.cache-electrs.outputs.cache-hit != 'true'"
run: |
source ./scripts/build_electrs.sh
mkdir -p bin
mv "$ELECTRS_EXE" bin/electrs-${{ runner.os }}-${{ runner.arch }}
- name: Set bitcoind/electrs environment variables
run: |
Expand Down
19 changes: 13 additions & 6 deletions .github/workflows/rust.yml
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Expand Up @@ -59,23 +59,30 @@ jobs:
uses: actions/cache@v5
with:
path: bin/electrs-${{ runner.os }}-${{ runner.arch }}
key: electrs-${{ runner.os }}-${{ runner.arch }}
- name: Download bitcoind/electrs
if: "matrix.platform != 'windows-latest' && (steps.cache-bitcoind.outputs.cache-hit != 'true' || steps.cache-electrs.outputs.cache-hit != 'true')"
key: electrs-submit-package-${{ runner.os }}-${{ runner.arch }}
- name: Download bitcoind
if: "matrix.platform != 'windows-latest' && steps.cache-bitcoind.outputs.cache-hit != 'true'"
run: |
source ./scripts/download_bitcoind_electrs.sh
source ./scripts/download_bitcoind.sh
mkdir -p bin
mv "$BITCOIND_EXE" bin/bitcoind-${{ runner.os }}-${{ runner.arch }}
- name: Download electrs
if: "matrix.platform != 'windows-latest' && steps.cache-electrs.outputs.cache-hit != 'true'"
run: |
source ./scripts/build_electrs.sh
mkdir -p bin
mv "$ELECTRS_EXE" bin/electrs-${{ runner.os }}-${{ runner.arch }}
- name: Set bitcoind/electrs environment variables
run: |
echo "BITCOIND_EXE=$( pwd )/bin/bitcoind-${{ runner.os }}-${{ runner.arch }}" >> "$GITHUB_ENV"
echo "ELECTRS_EXE=$( pwd )/bin/electrs-${{ runner.os }}-${{ runner.arch }}" >> "$GITHUB_ENV"
- name: Build on Rust ${{ matrix.toolchain }}
run: cargo build --verbose --color always
run: |

@benthecarman benthecarman May 29, 2026

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why do we add cargo cleans? won't that screw up the cache?

@tankyleo tankyleo May 29, 2026

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I was hitting a "disk space exhausted error" on that job in CI, wanted to see if this helps, at the cost of individual CI taking longer yes. cargo build and cargo test seem to rebuild from scratch, no shared artifacts.

@benthecarman benthecarman Jun 1, 2026

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I presume this is because we are building electrs in CI. Since its cached now, can you remove the cargo cleans? Maybe just put a clean after you upload the electrs binary

cargo build --verbose --color always
- name: Build with UniFFI support on Rust ${{ matrix.toolchain }}
if: matrix.build-uniffi
run: cargo build --features uniffi --verbose --color always
run: |
cargo build --features uniffi --verbose --color always
- name: Check release build on Rust ${{ matrix.toolchain }}
run: cargo check --release --verbose --color always
- name: Check release build with UniFFI support on Rust ${{ matrix.toolchain }}
Expand Down
15 changes: 15 additions & 0 deletions .github/workflows/vss-integration.yml
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Expand Up @@ -30,6 +30,21 @@ jobs:
uses: actions/checkout@v6
with:
path: ldk-node
- name: Enable caching for electrs
id: cache-electrs
uses: actions/cache@v5
with:
path: bin/electrs-${{ runner.os }}-${{ runner.arch }}
key: electrs-submit-package-${{ runner.os }}-${{ runner.arch }}
- name: Download electrs
if: "steps.cache-electrs.outputs.cache-hit != 'true'"
run: |
source ./ldk-node/scripts/build_electrs.sh
mkdir -p bin
mv "$ELECTRS_EXE" bin/electrs-${{ runner.os }}-${{ runner.arch }}
- name: Set electrs environment variable
run: |
echo "ELECTRS_EXE=$( pwd )/bin/electrs-${{ runner.os }}-${{ runner.arch }}" >> "$GITHUB_ENV"
- name: Checkout VSS
uses: actions/checkout@v6
with:
Expand Down
15 changes: 15 additions & 0 deletions .github/workflows/vss-no-auth-integration.yml
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Expand Up @@ -30,6 +30,21 @@ jobs:
uses: actions/checkout@v6
with:
path: ldk-node
- name: Enable caching for electrs
id: cache-electrs
uses: actions/cache@v5
with:
path: bin/electrs-${{ runner.os }}-${{ runner.arch }}
key: electrs-submit-package-${{ runner.os }}-${{ runner.arch }}
- name: Download electrs
if: "steps.cache-electrs.outputs.cache-hit != 'true'"
run: |
source ./ldk-node/scripts/build_electrs.sh
mkdir -p bin
mv "$ELECTRS_EXE" bin/electrs-${{ runner.os }}-${{ runner.arch }}
- name: Set electrs environment variable
run: |
echo "ELECTRS_EXE=$( pwd )/bin/electrs-${{ runner.os }}-${{ runner.arch }}" >> "$GITHUB_ENV"
- name: Checkout VSS
uses: actions/checkout@v6
with:
Expand Down
27 changes: 27 additions & 0 deletions scripts/build_electrs.sh
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@@ -0,0 +1,27 @@
#!/bin/bash
Comment thread
benthecarman marked this conversation as resolved.
set -eox pipefail

# Our Esplora-based tests require `electrs` binaries. Here, we
# download the code, build the binaries, and export their location
# via `ELECTRS_EXE`/`BITCOIND_EXE` which will be used by the
# `electrsd`/`bitcoind` crates in our tests.

HOST_PLATFORM="$(rustc --version --verbose | grep "host:" | awk '{ print $2 }')"
ELECTRS_GIT_REPO="https://github.com/tankyleo/blockstream-electrs.git"
ELECTRS_TAG="2026-05-26-electrum-submit-package"
if [[ "$HOST_PLATFORM" != *linux* && "$HOST_PLATFORM" != *darwin* ]]; then
printf "\n\n"
echo "Unsupported platform: $HOST_PLATFORM Exiting.."
exit 1
fi

DL_TMP_DIR=$(mktemp -d)
trap 'rm -rf -- "$DL_TMP_DIR"' EXIT

pushd "$DL_TMP_DIR"
git clone --branch $ELECTRS_TAG --depth 1 $ELECTRS_GIT_REPO blockstream-electrs
cd blockstream-electrs
RUSTFLAGS="" cargo build
export ELECTRS_EXE="$DL_TMP_DIR"/blockstream-electrs/target/debug/electrs
chmod +x "$ELECTRS_EXE"
popd
19 changes: 3 additions & 16 deletions scripts/download_bitcoind_electrs.sh → scripts/download_bitcoind.sh
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@@ -1,24 +1,18 @@
#!/bin/bash
set -eox pipefail

# Our Esplora-based tests require `electrs` and `bitcoind`
# binaries. Here, we download the binaries, validate them, and export their
# location via `ELECTRS_EXE`/`BITCOIND_EXE` which will be used by the
# Our Esplora-based tests require `bitcoind` binaries. Here, we
# download the binaries, validate them, and export their location
# via `ELECTRS_EXE`/`BITCOIND_EXE` which will be used by the
# `electrsd`/`bitcoind` crates in our tests.

HOST_PLATFORM="$(rustc --version --verbose | grep "host:" | awk '{ print $2 }')"
ELECTRS_DL_ENDPOINT="https://github.com/RCasatta/electrsd/releases/download/electrs_releases"
ELECTRS_VERSION="esplora_a33e97e1a1fc63fa9c20a116bb92579bbf43b254"
BITCOIND_DL_ENDPOINT="https://bitcoincore.org/bin/"
BITCOIND_VERSION="29.0"
if [[ "$HOST_PLATFORM" == *linux* ]]; then
ELECTRS_DL_FILE_NAME=electrs_linux_"$ELECTRS_VERSION".zip
ELECTRS_DL_HASH="865e26a96e8df77df01d96f2f569dcf9622fc87a8d99a9b8fe30861a4db9ddf1"
BITCOIND_DL_FILE_NAME=bitcoin-"$BITCOIND_VERSION"-x86_64-linux-gnu.tar.gz
BITCOIND_DL_HASH="a681e4f6ce524c338a105f214613605bac6c33d58c31dc5135bbc02bc458bb6c"
elif [[ "$HOST_PLATFORM" == *darwin* ]]; then
ELECTRS_DL_FILE_NAME=electrs_macos_"$ELECTRS_VERSION".zip
ELECTRS_DL_HASH="2d5ff149e8a2482d3658e9b386830dfc40c8fbd7c175ca7cbac58240a9505bcd"
BITCOIND_DL_FILE_NAME=bitcoin-"$BITCOIND_VERSION"-x86_64-apple-darwin.tar.gz
BITCOIND_DL_HASH="5bb824fc86a15318d6a83a1b821ff4cd4b3d3d0e1ec3d162b805ccf7cae6fca8"
else
Expand All @@ -31,13 +25,6 @@ DL_TMP_DIR=$(mktemp -d)
trap 'rm -rf -- "$DL_TMP_DIR"' EXIT

pushd "$DL_TMP_DIR"
ELECTRS_DL_URL="$ELECTRS_DL_ENDPOINT"/"$ELECTRS_DL_FILE_NAME"
curl -L -o "$ELECTRS_DL_FILE_NAME" "$ELECTRS_DL_URL"
echo "$ELECTRS_DL_HASH $ELECTRS_DL_FILE_NAME"|shasum -a 256 -c
unzip "$ELECTRS_DL_FILE_NAME"
export ELECTRS_EXE="$DL_TMP_DIR"/electrs
chmod +x "$ELECTRS_EXE"

BITCOIND_DL_URL="$BITCOIND_DL_ENDPOINT"/bitcoin-core-"$BITCOIND_VERSION"/"$BITCOIND_DL_FILE_NAME"
curl -L -o "$BITCOIND_DL_FILE_NAME" "$BITCOIND_DL_URL"
echo "$BITCOIND_DL_HASH $BITCOIND_DL_FILE_NAME"|shasum -a 256 -c
Expand Down
61 changes: 35 additions & 26 deletions src/builder.rs
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Expand Up @@ -190,6 +190,8 @@ pub enum BuildError {
LoggerSetupFailed,
/// We failed to setup the configured chain source.
ChainSourceSetupFailed,
/// The configured chain source is not supported.
ChainSourceNotSupported,
/// The given network does not match the node's previously configured network.
NetworkMismatch,
/// The role of the node in an asynchronous payments context is not compatible with the current configuration.
Expand Down Expand Up @@ -233,6 +235,9 @@ impl fmt::Display for BuildError {
Self::DNSResolverSetupFailed => {
write!(f, "An attempt to setup a DNS resolver has failed.")
},
Self::ChainSourceNotSupported => {
write!(f, "The configured chain source is not supported.")
},
}
}
}
Expand Down Expand Up @@ -1428,18 +1433,20 @@ fn build_with_store_internal(
let (chain_source, chain_tip_opt) = match chain_data_source_config {
Some(ChainDataSourceConfig::Esplora { server_url, headers, sync_config }) => {
let sync_config = sync_config.unwrap_or(EsploraSyncConfig::default());
ChainSource::new_esplora(
server_url.clone(),
headers.clone(),
sync_config,
Arc::clone(&fee_estimator),
Arc::clone(&tx_broadcaster),
Arc::clone(&kv_store),
Arc::clone(&config),
Arc::clone(&logger),
Arc::clone(&node_metrics),
)
.map_err(|()| BuildError::ChainSourceSetupFailed)?
runtime.block_on(async {
ChainSource::new_esplora(
server_url.clone(),
headers.clone(),
sync_config,
Arc::clone(&fee_estimator),
Arc::clone(&tx_broadcaster),
Arc::clone(&kv_store),
Arc::clone(&config),
Arc::clone(&logger),
Arc::clone(&node_metrics),
)
.await
})?
},
Some(ChainDataSourceConfig::Electrum { server_url, sync_config }) => {
let sync_config = sync_config.unwrap_or(ElectrumSyncConfig::default());
Expand Down Expand Up @@ -1476,7 +1483,7 @@ fn build_with_store_internal(
Arc::clone(&node_metrics),
)
.await
}),
})?,
None => runtime.block_on(async {
ChainSource::new_bitcoind_rpc(
rpc_host.clone(),
Expand All @@ -1491,25 +1498,27 @@ fn build_with_store_internal(
Arc::clone(&node_metrics),
)
.await
}),
})?,
},

None => {
// Default to Esplora client.
let server_url = DEFAULT_ESPLORA_SERVER_URL.to_string();
let sync_config = EsploraSyncConfig::default();
ChainSource::new_esplora(
server_url.clone(),
HashMap::new(),
sync_config,
Arc::clone(&fee_estimator),
Arc::clone(&tx_broadcaster),
Arc::clone(&kv_store),
Arc::clone(&config),
Arc::clone(&logger),
Arc::clone(&node_metrics),
)
.map_err(|()| BuildError::ChainSourceSetupFailed)?
runtime.block_on(async {
ChainSource::new_esplora(
server_url.clone(),
HashMap::new(),
sync_config,
Arc::clone(&fee_estimator),
Arc::clone(&tx_broadcaster),
Arc::clone(&kv_store),
Arc::clone(&config),
Arc::clone(&logger),
Arc::clone(&node_metrics),
)
.await
})?
},
};
let chain_source = Arc::new(chain_source);
Expand Down
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