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lightningtenna

Pay a lightning invoice over goTenna mesh network

Terms:

  • MESH -- the off-grid machine. Has a copy of C-Lightning installed, a Blockstream satellite connection for blockchain backend, and will relay C-Lightning messages for a single channel, over mesh network.

  • GATEWAY -- has a connection to goTenna mesh network and also internet. Does not require any C-Lightning or Bitcoin blockchain capability but will act as a relay/proxy for MESH.

  • REMOTE -- the remote channel counterpaty for the lightning channel MESH has open, not GATEWAY! Has C-Lightning running only.

Optional but recommended C-Lightning config options:

# listen but don't announce
bind-addr=0.0.0.0:9733
# disable dns lookup of peers
disable-dns
# see wire messages
log-level=io

Setup

  1. C-Lightning setup:

    1. REMOTE must be at commit v0.7.3rc2

    2. MESH works best with additional patches, found in this fork: v0.7.3rc2_mesh

    git clone https://github.com/willcl-ark/lightningtenna.git
    git checkout v0.7.3rc2_mesh
    
  2. Both instances of C-Lightning should be configured using "--enable-developer" flag in order to permit the "lightning-cli dev-suppress-gossip" command:

    ./configure --enable-developer

  3. Make C-Lightning

    make

  4. Before first start, modify the values in example_config.ini as appropriate.

  5. MESH should ideally have a single peer and single channel open in C-Lightning.

  6. On MESH, ensure C-Lightning is not running.

  7. On REMOTE start C-Lightning. Issue RPC command:

    lightning-cli dev-suppress-gossip

  8. On MESH, start the python mesh client: python lightningtenna.py --mesh, follow the prompts, then power on goTenna (a) and await connection messages.

  9. On GATEWAY (can be same machine for testing) start the gateway client python lightningtenna.py --gatway, power on goTenna (b) and await connection messages.

  10. On MESH start C-Lightning.

  11. Watch them communicate via mesh network proxy.

  12. Pay an invoice. If testing, you can use python testpay.py to grab a testnet blockstream satellite invoice and try to pay it using Lighting-rpc.

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Pay a lightning invoice over goTenna mesh network

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