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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1answer
39 views

Lightning Node High Availability/High Throughput

Are there any resources/best practises on running a highly available/high throughput lightning node? If my lightning service where to take off, should I be running multiple lightning nodes or a single ...
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1answer
62 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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2answers
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“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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1answer
129 views

C-lightning lightningd crashing

To run a lightning node I followed the instructions here: https://medium.com/@dougvk/run-your-own-mainnet-lightning-node-2d2eab628a8b except that I downloaded and installed bitcoind and lightningd ...
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1answer
30 views

“private” agreement between two c-lightning nodes on channel closure fee

When i was at LNConf, one of the devs of c-lightning (IIRC) told me that there is a custom, manual way to agree between two nodes on channel closing fees. Can anyone elaborate how this is possible? I ...
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1answer
30 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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1answer
28 views

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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1answer
22 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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2answers
86 views

What is the difference between listpeers vs listnodes commands?

In c-lightning implementation, what is the difference between the listpeers and listnodes commands of lightning-cli?
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1answer
44 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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1answer
40 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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1answer
41 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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2answers
39 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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1answer
37 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?
2
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1answer
80 views

How to capture c-lightining logs?

Where does c-lightning save its debug.log file? I know you can run the lightning daemon with --log-level=debug and access the logs in the terminal. But, I run my node on a remote server and I access ...
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1answer
36 views

Generating Lightning invoice with an optional parameter

I have a question on the command invoice with the optional parameter. I don't understand how to create the invoice with the optional parameter. The c-lighitning documentations do not have an example ...
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1answer
38 views

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 ...
2
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1answer
27 views

How run c-lightning with the local node bitcoin

I have a bitcoin-core-18.0 with on my linux mint, and I don't have downloaded the bitcoin with the ppa but I downloaded the official zip directory on site bitcoin. Now my question is, c-lightning ...
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1answer
36 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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1answer
150 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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1answer
148 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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2answers
352 views

Can I send/receive payments but prevent forwarding payments in Lightning Network?

Say I am using a very computationally constrained device (eg. a sensor) and it uses Lightning Network to send/receive payments. However, being computationally constrained it doesn't want to forward ...
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2answers
390 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 ...
4
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1answer
283 views

Why is my “spendable_msat” much lower than “msatoshi_to_us”?

Today I was attempting to send a Lightning Network payment via c-lightning, version v0.7.1-64-gbb30104, using a channel I established in 2018. Strangely, my payment kept failing even if the ...
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1answer
37 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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1answer
54 views
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2answers
80 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 ...
2
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1answer
108 views

Lightning Network : Pay a Bolt11 Invoice in multiple Payments

Is there a way to pay one Bolt 11 Invoice in multiple payments with Lightning Network? For instance this invoice total amount to pay is 5000 satoshi: ...
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1answer
59 views

invoice amount is 1200000 but I paid 1201035. What is 1035?

I paid the invoice and then I noticed I paid more than the amount of the invoice. 1201035 (I actually paid) - 1200000 (the amount of the invoice) = 1035 (?) My questions are.. What is 1035 satoshi? ...
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0answers
38 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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2answers
402 views

Make payments Lightning without Invoice?

The Lightning-RFC defines, in BOLT #11, an invoice protocol for proof-of-payment. While this is a pretty cool feature, I was wondering if it would be possible to make a payment without such invoice. ...
2
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1answer
32 views

Lightning Network on testnet - listchannels and listnodes returning empty values

I have setup a lightning node on testnet using c-lightning. The lightning-cli getinfo command output: { "id" : "0315a5746114ab9f3e8f0a3f2f73153ef1e4a8fb58daa54fa97c9603dfab989a30", "alias" : "...
4
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1answer
155 views

What are the 3 arguments called in function SHA256?

void sha256(struct sha256 *sha, const void *p, size_t size) { struct sha256_ctx ctx; sha256_init(&ctx); sha256_update(&ctx, p, size); sha256_done(&ctx, sha); } I'm trying ...
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1answer
60 views

How to install & activate a c-lightning plugin in lightningd?

I recently stumbled across the https://github.com/lightningd/plugins github repo and wanted to install the autopilot plugin. But how can I install and activate the plugin which I downloaded from the ...
3
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1answer
164 views

Is it possible to connect to BTCPay server remote c-lightning node?

I have BTCPay server and would like to use external c-lightning node which i have funded and prefer more over BTCPay server local docker container (DC). In store configuration i see that there is ...
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2answers
39 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 ...
0
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1answer
54 views

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 ...
2
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1answer
84 views

How to know that the account balance of a user needs to be updated after paying/sending an invoice?

Lets say there is a service in which users can have a few satoshis but are also able to deposite/withdraw satoshis by paying/sending a lightning invoice. Let us assume the service has some data store ...
2
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1answer
146 views

lightning-cli list only my channels

After connecting to a busy lighnting node such as 03c856d2dbec7454c48f311031f06bb99e3ca1ab15a9b9b35de14e139aa663b463@testnet-lnd.htlc.me the number of channels my own lightning node knows about ...
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2answers
322 views

c-lightning & Lightweight nodes (no local bitcoind)

I am trying to take advantage of the new release of c-lightning 0.6 that provide the ability to setup a lightweight node (i.e. No Local bitcoind instance running). But did not found any documentation ...
2
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1answer
365 views

Lightning network: Open a channel with a peer that is not a full node?

Is it possible to open a channel with a peer that is not a full node? Or to exchange lightning payments between two peers that are not full nodes, they both have to open a channel with full lightning ...
4
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1answer
1k views

Closing a channel in Lightning Network

I have some doubts about the closure of a lightning network channel. As far as I know, there can be (al least) 4 different scenarious: one node decides to close the channel, and the other one accept ...
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1answer
104 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 ...
4
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1answer
118 views

What languages can I write plugins for c-lightning in?

I know that there's a Python library available for writing plugins for c-lightning. What would I need to do to for example use a JVM language like Scala?
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4answers
2k views

Lightning mainnet peer list?

I just set up c-lightning on mainnet and I'd like to open a channel but I can't find a list of node ids and ip addresses. Does anyone know where I can find this?
2
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1answer
68 views

lightning-cli listnodes is empty. Am I missing something?

I want the result of listnodes like the following. How can I do that? { "nodes" : [ { "nodeid" : "028e5a8e86540f703e1f58880d35d1e318a54c27d84ec1edbcde04a78ed4469a1e", "alias" : "???? ...
3
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1answer
150 views

Is it possible to rebalance channels by sending to yourself (from a channel to an other) in c-lightning? How?

I know it is possible with LND and I don't know if it is possible with Eclair. I have tried to issue an invoice and to find a route with the same node but I got the { "code" : -1, "message" : "Could ...
6
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1answer
79 views

Can the lightning network be subject to DoS attacks due to message flooding?

In the current implementations of the Lightning network protocol (c-lightning, eclair and lnd), is there any check that stops spamming/flooding of channel_announcement, mode_announcement or ...
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1answer
45 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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1answer
86 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?