Goal

We want to build a wallet which speaks lightning and is able to do DLCs.

Possible approaches

Virtual channels

Probably the most complex solution is to have 2 virtual channels. One speaking lightning, the other one speaking DLCs. E.g. something like this:

flowchart LR
    A1((Alice))
    B1((Bob))
   

    txf[tx_fund]
    
    txc_outer[tx_commit]
    
    txs[tx_settle]
    
    txcis[tx_commit_itchysats]
    txcln[tx_commit_ln]
    or{or}
    and{and}


    A1 -- fund --> txf
    B1 -- fund --> txf
    txf --> or
    or --> txs
    or --> txc_outer
    txc_outer --> and
    and --> txcis
    and --> txcln
    
    subgraph ItchySats
      txcet_is[tx_cetN]
      txr_is[tx_refund]
      txp_is[tx_punish]
      or_is{or}
      
      txcis --> or_is
      or_is --> txp_is
      or_is --> txcet_is
      or_is --> txr_is
    end
    
    
    subgraph LN
      htlc1((htlc1))
      htlc2((htlc2))
      htlcN((htlcN))
      txp_ln[tx_punish]

      txcln --> txp_ln
      txcln --> htlc1
      txcln --> htlc2
      txcln --> htlcN

    end

Advantages:

• we might be able to use ldk, this needs to be evaluated.
• we might be able to use maia.
• we should be able to receive standard LN payments from anyone in LN.

Disadvantage:

• clearly complex
• channels can only be opened to nodes running the same code because of the custom transaction structure. i.e. you can't open a channel to other LN nodes (LND or CLightning) with this.

Maia speak LN

We could implement the needed bolts into https://github.com/comit-network/maia/

Advantage:

• full control over the code base. We can decide to only implement what we really need
• we should be able to receive standard LN payments from anyone in LN.

Disadvantage:

• complexity
• only compatible with our own nodes, i.e. you can't open channels to other LN nodes (LND, Clightning) with this.

LN speak DLC

We could add the DLC feature to a lightning implementation (e.g. use LDK and extend it). The it's ok to be odd would allow us to add features to our client without breaking compatibility with other LN implementations.

Advantage:

• we can open a channel with other LN nodes
• we speak native lightning out of the box

Disadvantage:

• Complexity
• If we build on LDK we probably will need to fork the library to add what we need which could become a nightmare in pulling in upstream changes.

env: regtest

2022-11-29 10:08:56 DEBUG ten_ten_one::lightning: Received ChannelClosed { channel_id: [244, 7, 171, 215, 235, 60, 118, 135, 15, 108, 121, 122, 8, 175, 213, 174, 63, 41, 130, 20, 7, 19, 82, 83, 170, 226, 233, 87, 56, 116, 61, 173], user_channel_id: 0, reason: CounterpartyForceClosed { peer_msg: "Channel closed because of an exception: Funding transaction was un-confirmed. Locked at 0 confs, now have 0 confs." } }

Even though I am fauceting several times after opening a channel.

How to reproduce

0. clean maker and taker directories
1. fund taker (and maker if not already)
2. open channel (this will succeed)
3. mine a block

This might not be necessary, but I always did in my test scenarios. At least it verifies that the channel is actually usable.

5. open a cfd
6. settle cfd

7. close channel
8. mine a block
9. open channel
10. mine a block

--- It seems at this point we are in a broken state, opening a CFD will fail, even though we got a ChannelReady event.

Eventually the channel will be force-closed with the message above.

Fixes #373.

For now it defaults to a collaborative closure. Eventually, we might want to let the taker force-close.

https://user-images.githubusercontent.com/9418575/204174964-f09e3854-f911-496a-abfb-24b4a9962530.mp4

This will allow for providing configurations using the command line when running flutter.

e.g.

flutter run -d macos --dart-define="NETWORK=testnet" --dart-define="[email protected]:9045"

The following parameter are supported

• MAKER_IP
• MAKER_PK
• MAKER_PORT_LIGHTNING
• MAKER_PORT_HTTP
• MAKER_P2P_ENDPOINT (will overwrite MAKER_IP, MAKER_PK and MAKER_PORT_LIGHTNING if set)

Fixes https://github.com/itchysats/10101/issues/352.

Depending on the situation we make use of different values:

• The balance widget now displays the total balance by default, but on hover one can see a tooltip with the breakdown between confirmed and pending.
• We use the confirmed on-chain balance to determine how much bitcoin they user can use to either open a channel or send on-chain.
• We use the total on-chain balance to determine if the initial deposit-bitcoin card should be rendered or not.

The first commit (https://github.com/itchysats/10101/commit/f56ab4895d9f2fbb20f4e36f00ccdc719cf970e4) was useful for testing so I decided to keep it around.

A lowfi set of user interfaces depicting the user journey through the app including the following flows.

• Initialize wallet
• Create payment channel with maker.
• Navigation to the CFD trading app (itchysats)
• Open a CFD trade (funding through the lightning wallet)
• Close a CFD trade

note: this is just the insert/load API with tests, adding it now to avoid trouble rebasing later (and to spark a conversation whether we should use one or two tables (inbound / outbound payments)

This PR derives a BIP84 wallet from a BIP39 seed phrase and exposes a corresponding rust api through the flutter rust bridge. Additionally this PR already improves the structuring (to the best of my limited flutter skills).

resolves #68 #11

This PR is still draft as the seed screen needs a little bit more care.

Embed a TradingView bitmex XBTUSD widget inside a webview.

Note: it works on Android/iOS. Desktop platforms get a placeholder that the functionality is not supported yet.

I've recorded in landscape, as it's much nicer for viewing charts like that 😁 https://user-images.githubusercontent.com/8319440/203267520-dd5b8835-12e2-4ca1-8aa9-579b5e8f081a.mov

• align the API to allow passing custom description when creating invoice
• Add a Flutter widget that allows creating an invoice. You can specify amount, expiry time, and add a custom description. It generates a QR code and allows you to copy invoice to clipboard.

Includes navigation to CFD Trading screen, but we need more complex routing and should plug in a routing library as recommended here: https://docs.flutter.dev/development/ui/navigation#using-the-navigator

I will work on introducing go_router routing library so we can depict the routing between the wallet and the service screens.

Note on naming: I don't particularly like the name service for trading/bets (...) - I thought about different names (e.g. feature or in-app-...?) but did not come up with anything satisfying so I just went with service for now.

So far, we used regtest or testnet for testing.

We should evaluate how easy it is to setup a bitcoin signet including additional services like a blockexplorer and electrs.

Adds and handling in case the background processor stops, by simply trying to start the background processor again.

Some more refactoring could be probably done there, but I tried to keep the changes to a minimum.

Annotating the function with #[tokio::main] killed the runtime after the function completes. Thus we had to block the run function indefinitely for the long living threads to keep going.

This change introduces a runtime managed outside of the function scope and thus allows the run function to return bringing the following advantages.

• We don't block a whole frb worker thread just to run the lightning node, sync tasks, background processor, etc.
• We are using a multi threaded runtime instead of the current thread
  • allowing to actually join the background processor without blocking all other tasks.
  • making better use of multiple cpu cores.
• We are not creating a new runtime on every async bridge call.

I primarily work with the simulator and it bugged me to disable this if all the time. Only logging if on android or ios will not polute the logging if working with native.

Tested on testnet stable 0.3.2 android

Opening a channel, does not always succeed. It looks like the maker is busy and we are constantly loosing the connection. During channel creation this is critical as the exchange between both parties is required. see logs below.

Open Channel HTTP Request

2022-12-07 14:55:13  INFO rocket::server: POST /api/channel/open application/json:    
2022-12-07 14:55:13  INFO _: Matched: (post_open_channel) POST /api/channel/open application/json    
2022-12-07 14:55:13 DEBUG ten_ten_one::wallet: Sending to address address=tb1q0zqkdj72pda06k4605nk8f5us29la2qyat4vjw sats=30500
2022-12-07 14:55:13  WARN electrum_client::client: call 'estimate_fee' failed with EOF while parsing a value at line 1 column 0, retry: 1/1    
2022-12-07 14:55:15 DEBUG electrum_client::raw_client: new_ssl socket_addrs.domain():Some("blockstream.info") validate_domain:true timeout:None    
2022-12-07 14:55:15  INFO electrum_client::client: Succesfully created new client    
2022-12-07 14:55:16 DEBUG ten_ten_one::wallet: Sent to address address=tb1q0zqkdj72pda06k4605nk8f5us29la2qyat4vjw sats=30500 txid=2668d12c9db9e3c5e2bbc5d552529c285541266cf8ec1dd6fa6f11a803218e01

Open Channel LDK Request

raw_log="Received message OpenChannel(OpenChannel { chain_hash: 000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943, temporary_channel_id: [67, 203, 55, 17, 143, 255, 49, 187, 129, 167, 164, 56, 113, 5, 221, 77, 167, 236, 49, 212, 122, 47, 227, 235, 76, 164, 209, 93, 12, 194, 44, 179], funding_satoshis: 45000, push_msat: 30000000, dust_limit_satoshis: 354, max_htlc_value_in_flight_msat: 4500000, channel_reserve_satoshis: 1000, htlc_minimum_msat: 1, feerate_per_kw: 253, to_self_delay: 144, max_accepted_htlcs: 50, funding_pubkey: PublicKey(40bbffa9a84c985d1b940e888eb773894da2cb4a085128425381423dd09d21a3f530af302cd86aece877942c241878121102e7ff050b1e235087c6019d7e7030), revocation_basepoint: PublicKey(d3b74fd54644768651180d56811f6a96609379faa100e41c6a5e3a19660c7328e4ea3b642c745223af119678645ca3c735cac6d9850effc1014aeba1e799968d), payment_point: PublicKey(6095d415d5119d98e5eb7986c2a82872b3ba144f4269c09ab6046d753e9f0f933d38569c17aa51b54a0a6b9bc0666966ab683b89f7d6d7d49a81ec48ee88bf7e), delayed_payment_basepoint: PublicKey(d29fe58a207ebe67e5065896b950b6bca7691ce828e7f1d33768492319e04ed33af748b726be152ec7b4f14c0054c191f4711cab790ee8704bccac5f67da9123), htlc_basepoint: PublicKey(1d9e9393db9d4cca44595390b24f55ef60ac1b5529890b53372586b3701399d39608d6b4eed16d920a8ffbe93ee500a8276357fdc90e95524d39e085677831fd), first_per_commitment_point: PublicKey(640cb5f219fc8c73f877220d13aa9b3d1cb95d131a3941b68d0f2920979d6d8d06891fe6be55cbf9bfda8bc129d1d49b5008904170560a35b9364800c29cb406), channel_flags: 1, shutdown_scriptpubkey: Present(Script(OP_0 OP_PUSHBYTES_20 eda326297491e33ac62b78f8e3c2761b2b26f746)), channel_type: Some([0, 16]) }) from 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:55:36 DEBUG ldk: log_level=Level(Debug) module_path="lightning::ln::peer_handler" line=1626 raw_log="Handling SendAcceptChannel event in peer_handler for node 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef for channel 43cb37118fff31bb81a7a4387105dd4da7ec31d47a2fe3eb4ca4d15d0cc22cb3"
2022-12-07 14:55:36 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=987 raw_log="Enqueueing message AcceptChannel { temporary_channel_id: [67, 203, 55, 17, 143, 255, 49, 187, 129, 167, 164, 56, 113, 5, 221, 77, 167, 236, 49, 212, 122, 47, 227, 235, 76, 164, 209, 93, 12, 194, 44, 179], dust_limit_satoshis: 354, max_htlc_value_in_flight_msat: 4500000, channel_reserve_satoshis: 1000, htlc_minimum_msat: 1, minimum_depth: 1, to_self_delay: 144, max_accepted_htlcs: 50, funding_pubkey: PublicKey(8f1691e5f70d8edd7cb83e5d615e7e96e003b04859383f50e494bac00ca87a9ef3bbcccd314966cf1ff13ea7a7f7bbfc72a317cc0895536c0705cda543927585), revocation_basepoint: PublicKey(b8ae54753a340c25dfb1114214a8d2b36189504b671a50cc3ac5d517759777b978039c672b42916019e051064684bec9759b1bf264543f32deab5cb33d506e61), payment_point: PublicKey(51a66ab04f996ce0bd9f74087d3ad9ed72cd1aade805443415b50601539c67029b61bfd93f76a1fcce25cf4c624f9e5dd3202c9398f4403fa75a8b5a231bb581), delayed_payment_basepoint: PublicKey(81400626532948ea7a4a1a22c42e8153e050185b5c1ca7071fd57d35485442cb1bb4ea7c34075f5e85da2dcfbfc5ebb0ad60bd492e1e228e6ad6a10cda94c120), htlc_basepoint: PublicKey(73c240c00019e9044da117c43212aebf094a2c0a747f17d09d79ead5524d79e524fc3fe8e5372ff3bf28d27a4e8fe26b6d5e4f6306ce9866786359a2e1e8e35b), first_per_commitment_point: PublicKey(dfff833ff49407a3d07117292f1ed5a06e7c3bccbf61a3444805d75ba3d3c2055f6cfce7a28f6a3f21524c1a021833b509d1ee7d5abba795e811bd2e62a9beb9), shutdown_scriptpubkey: Present(Script(OP_0 OP_PUSHBYTES_20 e9571a9901769c3537e1b060092dd35935a37766)), channel_type: Some([0, 16]) } to 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=1290 raw_log="Received message FundingCreated(FundingCreated { temporary_channel_id: [67, 203, 55, 17, 143, 255, 49, 187, 129, 167, 164, 56, 113, 5, 221, 77, 167, 236, 49, 212, 122, 47, 227, 235, 76, 164, 209, 93, 12, 194, 44, 179], funding_txid: 250ad0ed727946389d93c6dd4f03364e934b2a1564e06bc88640805c3a8a6c71, funding_output_index: 0, signature: 3044022028a4aa4c7831ad13b9d4c67187b215b4aad67f8ab565606bb6fbf2fb1cd3e26b02207933c4ea95e76e6c9f765da67659165db65621e70d60cdba3c0cd6449f583134 }) from 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=1556 raw_log="Building commitment transaction number 281474976710655 (really 0 xor 120000230322308) for channel 43cb37118fff31bb81a7a4387105dd4da7ec31d47a2fe3eb4ca4d15d0cc22cb3 for us, generated by remote with fee 253..."
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=1797 raw_log="   ...including to_local output with value 30000"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=1803 raw_log="   ...including to_remote output with value 14817"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=2342 raw_log="Checking funding_created tx signature 28a4aa4c7831ad13b9d4c67187b215b4aad67f8ab565606bb6fbf2fb1cd3e26b7933c4ea95e76e6c9f765da67659165db65621e70d60cdba3c0cd6449f583134 by key 03a3219dd03d428153422851084acba24d8973b78e880e941b5d984ca8a9ffbb40 against tx 0200000001716c8a3a5c804086c86be064152a4b934e36034fddc6939d38467972edd00a250000000000bb236d8002e139000000000000160014fa0613f84635d8f75b2d49c1f4c3065dc005a0b13075000000000000220020cde8ee971869e832749e37dc107958d24359d7bd361db43a062e79532b86786184f01920 (sighash 28c692165db829da6b259e8a9f056300c350881b51dedc630af3730f487cc565) with redeemscript 475221039e7aa80cc0ba94e4503f385948b003e0967e5e615d3eb87cdd8e0df7e591168f2103a3219dd03d428153422851084acba24d8973b78e880e941b5d984ca8a9ffbb4052ae for channel 43cb37118fff31bb81a7a4387105dd4da7ec31d47a2fe3eb4ca4d15d0cc22cb3."
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=1556 raw_log="Building commitment transaction number 281474976710655 (really 0 xor 120000230322308) for channel 43cb37118fff31bb81a7a4387105dd4da7ec31d47a2fe3eb4ca4d15d0cc22cb3 for remote, generated by remote with fee 253..."
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=1797 raw_log="   ...including to_remote output with value 14817"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=1803 raw_log="   ...including to_local output with value 30000"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=2354 raw_log="Initial counterparty tx for channel 43cb37118fff31bb81a7a4387105dd4da7ec31d47a2fe3eb4ca4d15d0cc22cb3 is: txid 68d066c8705b90b924a61d4aaf12f98068eae6322d59c716543a85d907d4bb80 tx 0200000001716c8a3a5c804086c86be064152a4b934e36034fddc6939d38467972edd00a250000000000bb236d8002e13900000000000022002009a5d105f56d008c53a8ede2f6aaec05560b926403a8ac10cdf0b5a61ae512283075000000000000160014f43a32aee348fc7bf9aa0a5dce02a50b7acd00b984f01920"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::chain::channelmonitor" line=2092 raw_log="Tracking new counterparty commitment transaction with txid 68d066c8705b90b924a61d4aaf12f98068eae6322d59c716543a85d907d4bb80 at commitment number 281474976710655 with 0 HTLC outputs"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Info) module_path="lightning::ln::channel" line=2438 raw_log="Generated funding_signed for peer for channel 716c8a3a5c804086c86be064152a4b934e36034fddc6939d38467972edd00a25"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::chain::chainmonitor" line=583 raw_log="Got new ChannelMonitor for channel 716c8a3a5c804086c86be064152a4b934e36034fddc6939d38467972edd00a25"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Info) module_path="lightning::chain::chainmonitor" line=597 raw_log="Persistence of new ChannelMonitor for channel 716c8a3a5c804086c86be064152a4b934e36034fddc6939d38467972edd00a25 completed"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Debug) module_path="lightning::ln::peer_handler" line=1647 raw_log="Handling SendFundingSigned event in peer_handler for node 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef for channel 716c8a3a5c804086c86be064152a4b934e36034fddc6939d38467972edd00a25"
2022-12-07 14:55:37 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=987 raw_log="Enqueueing message FundingSigned { channel_id: [113, 108, 138, 58, 92, 128, 64, 134, 200, 107, 224, 100, 21, 42, 75, 147, 78, 54, 3, 79, 221, 198, 147, 157, 56, 70, 121, 114, 237, 208, 10, 37], signature: 304402207968f254589c84cab013c28350945d668ac3f2fade7db1a3a9835328fe0a58120220097fff4a3f1c1677c2703a6b32b1c1e007cc8ebccdcc07dddf0a2f3720f6c6eb } to 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"

Don't know what this is about - Unsure if this is even an issue.

2022-12-07 14:55:42 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channelmanager" line=6167 raw_log="New best block: 0000000000000003efc12b6443ef9d6f279982ca288917f8d95266a5764f155a at height 2410224"
2022-12-07 14:55:42 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=5867 raw_log="Cannot create an announcement_signatures as our peer is disconnected"
2022-12-07 14:55:42 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=5867 raw_log="Cannot create an announcement_signatures as our peer is disconnected"
2022-12-07 14:55:42 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=5867 raw_log="Cannot create an announcement_signatures as our peer is disconnected"
2022-12-07 14:55:42 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=5867 raw_log="Cannot create an announcement_signatures as our peer is disconnected"
2022-12-07 14:55:42 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=5867 raw_log="Cannot create an announcement_signatures as our peer is disconnected"

Ping Pong Looks like the taker is still able to reach the maker

2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=1290 raw_log="Received message Ping(Ping { ponglen: 0, byteslen: 64 }) from 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=987 raw_log="Enqueueing message Pong { byteslen: 0 } to 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"

Failing HTLC / Duplicative fail for HTLC

2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channelmanager" line=5618 raw_log="Failing HTLC with hash ca5112e4d5715691dbdef5abd73df96f70f64053781316e29b940c10d9f64630 from our monitor"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channelmanager" line=4191 raw_log="Received duplicative fail for HTLC with payment_hash ca5112e4d5715691dbdef5abd73df96f70f64053781316e29b940c10d9f64630"

Disconnection from taker even if at the very same second a ping pong was processed.

2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=1862 raw_log="Handling disconnection of peer 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef, with future connection to the peer possible."
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Debug) module_path="lightning::ln::channelmanager" line=6534 raw_log="Marking channels with 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef disconnected and generating channel_updates. We believe we can make future connections to this peer."
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channel" line=4202 raw_log="Peer disconnection resulted in 0 remote-announced HTLC drops on channel 716c8a3a5c804086c86be064152a4b934e36034fddc6939d38467972edd00a25"

Finished noise handshake: ?

2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Debug) module_path="lightning::ln::peer_handler" line=1118 raw_log="Finished noise handshake for connection with 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=987 raw_log="Enqueueing message Init { features: [162, 81, 10, 8, 128, 160, 8], remote_network_address: Some(IPv4 { addr: [194, 166, 99, 139], port: 49548 }) } to 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"

Peer init message: I guess the taker is trying to reconnect?

2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Info) module_path="lightning::ln::peer_handler" line=1246 raw_log="Received peer Init message from 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef: DataLossProtect: supported, InitialRoutingSync: not supported, UpfrontShutdownScript: supported, GossipQueries: supported, VariableLengthOnion: required, StaticRemoteKey: required, PaymentSecret: required, BasicMPP: supported, Wumbo: supported, ShutdownAnySegwit: supported, OnionMessages: supported, ChannelType: supported, SCIDPrivacy: supported, ZeroConf: supported, unknown flags: none"

Maker tries to reestablish the channel <- this is repeated several times - I guess this is due to an unstable connection between the maker and the taker.

2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Debug) module_path="lightning::ln::channelmanager" line=6590 raw_log="Generating channel_reestablish events for 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channelmanager" line=2474 raw_log="Attempting to generate broadcast channel update for channel fedba3852b899aea200fcf76ae0dadca6a4a03857eb6e39bbadeedb41d9877f1"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channelmanager" line=2484 raw_log="Attempting to generate channel update for channel fedba3852b899aea200fcf76ae0dadca6a4a03857eb6e39bbadeedb41d9877f1"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channelmanager" line=2493 raw_log="Generating channel update for channel fedba3852b899aea200fcf76ae0dadca6a4a03857eb6e39bbadeedb41d9877f1"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Info) module_path="lightning::ln::channel" line=5985 raw_log="Sending a data_loss_protect with no previous remote per_commitment_secret for channel 716c8a3a5c804086c86be064152a4b934e36034fddc6939d38467972edd00a25"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channelmanager" line=2474 raw_log="Attempting to generate broadcast channel update for channel 2786d3cbf977d02d0a1a074300e665a467f7f4695c478975ca57f5968e7a2824"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channelmanager" line=2484 raw_log="Attempting to generate channel update for channel 2786d3cbf977d02d0a1a074300e665a467f7f4695c478975ca57f5968e7a2824"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::channelmanager" line=2493 raw_log="Generating channel update for channel 2786d3cbf977d02d0a1a074300e665a467f7f4695c478975ca57f5968e7a2824"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Debug) module_path="lightning::ln::peer_handler" line=1722 raw_log="Handling SendChannelAnnouncement event in peer_handler for node 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef for short channel id 2649625110852861953"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Debug) module_path="lightning::ln::peer_handler" line=1716 raw_log="Handling SendChannelReestablish event in peer_handler for node 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef for channel 716c8a3a5c804086c86be064152a4b934e36034fddc6939d38467972edd00a25"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=987 raw_log="Enqueueing message ChannelReestablish { channel_id: [113, 108, 138, 58, 92, 128, 64, 134, 200, 107, 224, 100, 21, 42, 75, 147, 78, 54, 3, 79, 221, 198, 147, 157, 56, 70, 121, 114, 237, 208, 10, 37], next_local_commitment_number: 1, next_remote_commitment_number: 0, data_loss_protect: Present(DataLossProtect { your_last_per_commitment_secret: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], my_current_per_commitment_point: PublicKey(02020202020202020202020202020202020202020202020202020202020202ffcee50f772e0a9972250d4b61b3e5beb95de897c73b4ed1cc35ed013accf1c840) }) } to 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Debug) module_path="lightning::ln::peer_handler" line=1722 raw_log="Handling SendChannelAnnouncement event in peer_handler for node 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef for short channel id 2649654797664387073"
2022-12-07 14:57:29 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=987 raw_log="Enqueueing message GossipTimestampFilter { chain_hash: 000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943, first_timestamp: 1670421449, timestamp_range: 4294967295 } to 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:30 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=1290 raw_log="Received message ChannelReestablish(ChannelReestablish { channel_id: [113, 108, 138, 58, 92, 128, 64, 134, 200, 107, 224, 100, 21, 42, 75, 147, 78, 54, 3, 79, 221, 198, 147, 157, 56, 70, 121, 114, 237, 208, 10, 37], next_local_commitment_number: 1, next_remote_commitment_number: 0, data_loss_protect: Present(DataLossProtect { your_last_per_commitment_secret: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], my_current_per_commitment_point: PublicKey(02020202020202020202020202020202020202020202020202020202020202ffcee50f772e0a9972250d4b61b3e5beb95de897c73b4ed1cc35ed013accf1c840) }) }) from 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"

Ping pong

2022-12-07 14:57:30 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=987 raw_log="Enqueueing message Ping { ponglen: 0, byteslen: 64 } to 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:30 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=1290 raw_log="Received message Ping(Ping { ponglen: 0, byteslen: 64 }) from 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:30 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=987 raw_log="Enqueueing message Pong { byteslen: 0 } to 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:30 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=1290 raw_log="Received message Pong(Pong { byteslen: 0 }) from 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:32 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=1290 raw_log="Received message Ping(Ping { ponglen: 0, byteslen: 64 }) from 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"
2022-12-07 14:57:32 DEBUG ldk: log_level=Level(Trace) module_path="lightning::ln::peer_handler" line=987 raw_log="Enqueueing message Pong { byteslen: 0 } to 021e132fd64d457a507b56c1e67aa03a65913c176d733b8e9b110fe164063ce4ef"

I opened 3 cfds in total (one of them got closed).

At some point, the CFD was "open", but the channel was force-closed as I could not create new CFDs.

I found this log that might be relevant here:

2022-12-07 02:51:38  INFO ten_ten_one::lightning: EVENT: Channel 56b173e607c51cd83ad807e03f438076ef77bcfa64d4bba7b521d13c83e62ca5 closed due to: CounterpartyForceClosed { peer_msg: "Invalid commitment tx signature from peer" }