Questions tagged [c-lightning]

c-lightning is a standard compliant implementation of the Lightning Network protocol. The Lightning Network is a scalability solution for Bitcoin, enabling secure and instant transfer of funds between any two parties for any amount.

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Question regarding LN node backups

I have LN node running on c-lightning. I am performing ~/.lightning dir backups time-to-time. Let's say after backup i open few new channels and withdraw rest of onchain funds to my electrum. Then i ...
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164 views

How to get my c-lightning node's private key?

lightning-cli getinfo outputs my node's id, which is its public key. How can I get its underlying private key?
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195 views

Lightning node on a Bitcoin SPV

is there a way to run a Lightning node on a Bitcoin SPV node at the moment? I've read that both lnd and c-lightning need a Bitcoin Fullnode at this time. This might seem ignorant but i don't want to ...
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95 views

Why does my c-lightning node pay more than the invoice plus routing fees?

A friend sent me an invoice for 500,000 Satoshis. To my surprise, I sent 502294 Satoshis. Here's what I see from my c-lightning console: "msatoshi": 500,000,000 "msatoshi_sent": 502,294,595 My ...
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Clightning with BTCpay server failed

I have setup WooCommerce and BTCpayserver in Google cloud, and synced. Test to buy with BTC seems to work. Adding Lightning fails: I modified in BTCpay Lightning nodes in the Store management "...
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464 views

How to close stale lightning channels with c-lightning

I was running a lightning node using c-lightning about 9 months ago. Unfortunately the server was shutdown while a few channels were open. I have restarted the server and updated c-lightning to the ...
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195 views

C-Lightning update 0.6 doc

How do you update safely to 0.6 the working C-Lightning node?
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25 views

Pay private bolt11 via sendpay

I need to get fee, before send payment. BOLT11: root@855e20daeae9:/# lightning-cli --testnet decodepay ...
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40 views

How to get a full view of the lightning network with c-lightning?

As I understand lightning a node should in principle have a complete view of the lightning network graph (i.e., all nodes and channels). However, I also understand that for practical reasons the view ...
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Why does my freshly installed lightningd not show funds that I transferred to it?

I have a box with Ubuntu, bitcoin: fully indexed, and c-lightning. I made several new addresses, and put money into one of them. The money was transferred to it in block 655761. I see the bech32 ...
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55 views

Connect C-lightning to a remote bitcoind through tor

I would like to connect my C-lightning node to a remote Bitcoin node, in order to be able to run lightningd on a small storage capacity VPS. I could achieve this by using clearnet connection and ...
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46 views

How can wallet software implement automatic channel management for Lightning Network?

If I'm building a desktop Bitcoin wallet with Lightning support, and I don't want the user to have to worry about channel management, what's the way to achieve that? I've seen the autopilot solutions ...
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Exact syntax for lightning-cli txprepare

I have tried many different forms but I cannot prepare a transaction with lightning-cli txprepare from the Linux prompt. lightning-cli txprepare [{\"bc1qvzr0mwps952d0cdmchyd2pe5rlee5tfces5dzf\":\"all\...
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How create a personal node c-lighting for create a new channel with other node

I want to create my personal node to create a new channel with another personal node, an example my node with URL 12345678@192.164.1.7 I want create a channel with another personal node. I could not ...
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70 views

How do I install a second independent C-lightning node on the same machine as one with an already operational node?

I have followed the steps to install a C-lightning node on my Ubuntu machine. I wanted to know if I could install configure and make a second node on the same machine where both could run in tandem?
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137 views

Setting up and running multiple C-lightning nodes on same machine

I have successfully setup a C-lightning node on ubuntu using the tutorial. The problem I am having is trying to setup a second node that DOESN'T utilize the same .lightning hidden directory to run ...
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224 views

c-lightning: single tx multi-channel open stuck on CHANNELD_AWAITING_LOCKIN:We've confirmed funding, they haven't yet

I've tried to open multiple Lightning Network channels using a single Bitcoin transaction, with these steps: For every peer in PEERS (n=25) run: lightning-cli connect ${peer} lightning-cli ...
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52 views

Why getinfo() and listchannels() inactive channel count differs?

I have strange results comparing node information outputs between getinfo() and listchannels() calls. Maybe someone has thoughts what is wrong (with my trivial code or with c-lightning itself): chans ...
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79 views

What are the consequences if I spoof an IP address in the node_announcment message?

According to BOLT 07 the node accountment message looks like this: type: 257 (node_announcement) data: [64:signature] [2:flen] [flen:features] [4:timestamp] [33:node_id] [3:...
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83 views

How to upgrade bitcoind in docker?

I am running the docker version for c-lightning 0.7 On a raspberry I need to clone the blockchain, but it needs version 0.17.1 Looking at the docker-compose.yml file I see: version: "3" services: ...
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93 views

How to get all potential routes in c-lightning?

I'm trying to write some services on top of c-lightning and I need to check if certain payments hit certain nodes. lightning-cli getroute nodeid amount riskfactor This gives me a randomly ...
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178 views

How to use remote bitcoind with docker

I want to use multiple nodes with the same remote bitcoind. E.g. my node on my desktop, my node on digital ocean, my node on Google cloud ... I don't want to run everywhere a full bitcoind and pay ...
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54 views

channel count differs on my site and 1ML

I wonder why: lightning-cli getinfo;listfunds { "id": "035aef5661e1a6e370db60dc0455796800afd5b51fbc12a0a8b34836b15f5d7ef6", "alias": "TWronald✅", "color": "15c315", "num_peers": 41, "...
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331 views

How to tell if Lightning nodes are lnd, c-lightning, eclair

I am performing some experiments on the Lightning Testnet Network. I would like to perform the experiment on the 3 main lightning implementations, for which I would like to be able to connect and open ...
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571 views

How to know earning LN routing fees

I am using c-lightning version:v0.6-182-g1851ebb. Is there a way to know how much I have earned routing fees? I found that lnd has lncli feereport command that shows earned fees. Does c-lightning have ...
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227 views

c-lightning - CHANNELD_AWAITING_LOCKIN - Freeze

I have open 3 channels with a c-lightning node (with rompert.com and satoshis.place and HP). When I look for the funding_txid field on the blockchain the transactions are all confirms for more than ...
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How can I determine the reason for a failed routing on c-lightning

I am running a c-lightning node (v0.8.2). I am routing a payment every few days. However, I realized that dozens of payments every day fail, many of them fail locally (I see the status 'local_failed' ...
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43 views

Preparing a transaction with many outpts

What would be the exact command to prepare a transaction with multiple outputs, to a specific address? I'm able to list all my outputs with lightning-cli listfunds, but I'm not sure how to include ...
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60 views

c-lightning missing outputs

A few days ago I did a submarine swap in order to rebalance a channel of mine. I opted to be refunded on-chain using a brand-new address generated with c-lightning newaddr command. I used the p2sh ...
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59 views

lightning node data visibility on explorers

I'm trying to set my first c-lightning node with docker-compose using image from https://hub.docker.com/r/elementsproject/lightningd. currently, my node can connect and open channel with other nodes (...
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108 views

Error pay invoice. Ran out of routes to try after 2 attempts: see paystatus

I wanted to send some satoshis on testnet lightning network but I got "Ran out of routes to try after 2 attempts: see paystatus" error. I have a channel with 02...48 (1ML.com node ALPHA) and created ...
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259 views

What are the issues of running lightning daemon with pruning node?

Most lightning implementations I came across don't officially support pruned full node. Why is pruned mode implementation a challenge? What risk am I taking when I run lnd with pruned bitcoind?
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Bidirectional channel opening in c-lightning

With the current version of c-lightning is it possible to open a bidirectional channel funded by both parties? I managed to open a channel with fundchannel command, but that seems to be a ...
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97 views

How to securely update and verify C-Lightning release?

Recently, a new version (v0.7.3) of C-Lightning was released. The GitHub page has detailed instructions on how to build the software from source, but does not provide much details as to how to update ...
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190 views

c-lightning determine channel capacity

I'm using c-lightning to experiment with sending micropayments backwards and forwards between 2 separate nodes. One area I am experiencing great difficulty with is being able to generate an invoice ...
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Simulate HTLC in regtest c-lightning

I have three nodes in regtest environment l1, l2, and l3 l1 create a channel with l2 l2 create a channel with l3 l3 create an invoice for l1. l1 can pays it because use the route l1-l2-l3 I presume ...
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62 views

Total channel count differs from explorers

I have my own c-lightning node. listchannels returns 11,455 but explorers, e.g https://explore.casa/ show around 39,000. Do I need to set something to get all channel info? $ lightning-cli ...
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122 views

Please help me to understand lightning-cli getinfo more

I have now clightning running for a month. I watch very often lightning-cli getinfo Here I found in the first three weeks: "msatoshi_fees_collected": 0 A week ago it changed to "...
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64 views

How to debug lightning-cli invoice

I tried: lightning-cli invoice 100 invoice20190126 payme and nothing happens. How to debug?
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166 views

My lightning node is unreachable and lightning-rpc': Connection refused

I'm trying to use c-lightning on my raspberry. When start the lightning daemon I get two errors: the first one is: 2020-06-05T17:02:08.784Z DEBUG connectd: Failed to connect 10 socket: Network is ...
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36 views

Doubt on lightning channel opening

It's 5 days since I opened my first (and unique, for now) lightning channel. Unfortunately it seems that only me have funded the channel while the counterparty didn't, so the channel it's actually a ...
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57 views

c-lightning - Unknown Peer

I'm trying to create a channel using c-lighting (testnet), but I keep getting an Unknown Peer error message. I used cli/lightning-cli connect which seemed to work fine. I used cli/lightning-cli ...
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124 views

Is it possible to connect remotely to a c-lightning node with an exposed TCP port?

If you run a c-lightning node with EXPOSE_TCP set to True, it seems to me it should be possible to connect with it remotely, provided that the c-lightning RCP is listening to all incoming traffic. (IP ...
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145 views

“Cannot afford transaction”

version 0.7 clightning Listfunds shows me: 963692 satoshi available to fund channels 6280512 satoshi owned in channels 14832105 satoshi total channel capacity When I try to fund a channel with ...
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50 views

clightning uses all my resources, … till I have to shutdown!

clightning runs for a while great. However, every second day the computer locks up, I use docker-compose for that: version: "3" services: bitcoind: image: nicolasdorier/docker-bitcoin:0.16.3 ...
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119 views

Lightning payment between two nodes

I'm struggling to work out how I can setup a channel between two lightning nodes so that I can send a single payment from one node to the other. I have set up two separate c-lightning nodes connected ...
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Check which C-Lightning version I am running?

Ive downloaded and unpacked the new version 0.6 but is there anyway I can check through CLI commands which version i'm running to ensure the update worked?
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Bitcoin c-lightning node on Synology cannot connect to bitcoind

I'm trying to setup a bitcoin lightning node on my NAS (Synology), following this tutorial: https://bitcoindev.network/running-a-lightning-node-on-synology-nas/ Unfortunately I get the following error ...
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122 views

Sharing the lightning-rpc socket

I'm using user "lightning" to start the daemon, but would like to have user "bitcoin" to make the lightning-cli calls. How do I share the lightning-rpc file to do so? Thanks! Francois
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How to upgrade docker clightning

I tried to update clightning to the new version of 0.7 by docker-compose stop docker-compose rm clightning_bitcoin docker-compose up However, it is still version 0.63 Where do I set that it is ...