Eclair (french for Lightning) is a scala implementation of the Lightning Network. It can run with or without a GUI, and a JSON-RPC API is also available.
This software follows the Lightning Network Specifications (BOLTs). Other implementations include lightning-c, lit, and lnd.
🚧 Both the BOLTs and Eclair itself are a work in progress. Expect things to break/change!
Please see the latest release note for detailed information on BOLT compliance.
Eclair needs a synchronized, segwit-ready, zeromq-enabled, non-pruning, tx-indexing Bitcoin Core node. This means that on Windows you will need Bitcoin Core 0.14+.
Run bitcoind with the following minimal bitcoin.conf:
regtest=1
server=1
rpcuser=XXX
rpcpassword=XXX
txindex=1
zmqpubrawblock=tcp://127.0.0.1:29000
zmqpubrawtx=tcp://127.0.0.1:29000
Just use the windows installer, it should create a shortcut on your desktop.
You need to first install java, more precisely a JRE 1.8.
--headless mode.
Then download the latest fat jar and run:
java -jar eclair-node_xxxxxx-fat.jar| option | description | default value |
|---|---|---|
| --datadir | Path to the data directory | ~/.eclair |
| --headless | Run Eclair without the GUI | |
| --help, -h | Display usage text |
datadir is mandatory if you want to run several instances of eclair on the same machine. You will also have to change ports in the configuration (see below).
To change your node configuration, edit the file eclair.conf in datadir.
| option | description | default value |
|---|---|---|
| eclair.server.port | TCP port | 9735 |
| eclair.api.port | HTTP port | 8080 |
| eclair.bitcoind.rpcuser | Bitcoin Core RPC user | foo |
| eclair.bitcoind.rpcpassword | Bitcoin Core RPC password | bar |
| eclair.bitcoind.zmq | Bitcoin Core ZMQ address | tcp://127.0.0.1:29000 |
→ see application.conf for full reference.
| method | params | description |
|---|---|---|
| connect | host, port, nodeId | connect to another lightning node through a secure connection |
| open | host, port, nodeId, fundingSatoshis, pushMsat | opens a channel with another lightning node |
| peers | list existing local peers | |
| channels | list existing local channels | |
| channel | channelId | retrieve detailed information about a given channel |
| network | list all nodes that have been announced | |
| receive | amountMsat | generate a payment request for a given amount |
| send | amountMsat, paymentHash, nodeId | send a payment to a lightning node |
| close | channelId | close a channel |
| close | channelId, scriptPubKey (optional) | close a channel and send the funds to the given scriptPubKey |
| help | display available methods |
- [1] The Bitcoin Lightning Network: Scalable Off-Chain Instant Payments by Joseph Poon and Thaddeus Dryja
- [2] Reaching The Ground With Lightning by Rusty Russell
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