59 lines
2.1 KiB
Markdown
59 lines
2.1 KiB
Markdown
# Run your own (super) lightweight node
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In addition to providing command-line tooling that goes cryptographic verification
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on all the data your receive from the node, we have implemented a proxy mode, that
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allows you to run a super lightweight node. It does not follow the chain on
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every block or even every header, but only as needed. But still providing the
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same security as running a full non-validator node on your local machine.
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Basically, it runs as a proxy that exposes the same rpc interface as the full node
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and connects to a (potentially untrusted) full node. Every response is cryptographically
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verified before being passed through, returning an error if it doesn't match.
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You can expect 2 rpc calls for every query plus <= 1 query for each validator set
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change. Going offline for a while allows you to verify multiple validator set changes
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with one call. Cuz at 1 block/sec and 1000 tx/block, it just doesn't make sense
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to run a full node just to get security
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## Setup
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Just initialize your client with the proper validator set as in the [README](README.md)
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```
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$ export BCHOME=~/.lightnode
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$ basecli init --node tcp://<host>:<port> --chain-id <chain>
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```
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## Running
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```
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$ basecli proxy --serve tcp://localhost:7890
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...
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curl localhost:7890/status
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curl localhost:7890/block\?height=20
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```
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You can even subscribe to events over websockets and they are all verified
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before passing them though. Though if you want every block, you might as
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well run a full (nonvalidating) node.
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## Seeds
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Every time the validator set changes, the light node verifies if it is legal,
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and then creates a seed at that point. These "seeds" are verified checkpoints
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that we can trace any proof back to, starting with one on `init`.
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To make sure you are based on the most recent header, you can run:
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```
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basecli seeds update
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basecli seeds show
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```
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## Feedback
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This is the first release of basecli and the light-weight proxy. It is secure, but
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may not be useful for your workflow. Please try it out and open github issues
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for any enhancements or bugs you find. I am aiming to make this a very useful
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tool by tendermint 0.11, for which I need community feedback.
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