95 lines
3.1 KiB
Markdown
95 lines
3.1 KiB
Markdown
btcwallet
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=========
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btcwallet is a daemon handling bitcoin wallet functions. It relies on
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a running btcd instance for asynchronous blockchain queries and
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notifications over websockets.
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In addition to the HTTP server run by btcd to provide RPC and
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websocket connections, btcwallet requires an HTTP server of its own to
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provide websocket connections to wallet frontends. Websockets allow for
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asynchronous queries, replies, and notifications.
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This project is currently under active development is not production
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ready yet.
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## Usage
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Frontends wishing to use btcwallet must connect to the websocket
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`/wallet`. Messages sent to btcwallet over this websocket are
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expected to follow the standard [Bitcoin JSON
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API](https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_Calls_list)
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and replies follow the same API. The btcd package `btcjson` provides
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types and functions for creating messages that this API. However, due
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to taking a synchronous protocol like RPC and using it asynchronously,
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it is recommend for frontends to use the JSON `id` field as a sequence
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number so replies can be mapped back to the messages they originated
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from.
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## Installation
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btcwallet can be installed with the go get command:
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```bash
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go get github.com/conformal/btcwallet
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```
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## Running
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To run btcwallet, you must have btcd installed and running. By
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default btcd will run its HTTP server for RPC and websocket
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connections on port 8332. However, bitcoind frontends expecting
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wallet functionality may require to poll on port 8332, requiring the
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btcd component in a btcwallet+btcd replacement stack to run on an
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alternate port. For this reason, btcwallet by default connects to
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btcd on port 8334 and runs its own HTTP server on 8332. When using
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both btcd and btcwallet, it is recommend to run btcd on the
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non-standard port 8334 using the `-r` command line flag.
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Assumming btcd is running on port 8334, btcwallet can be
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started by running:
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```bash
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btcwallet -f /path/to/wallet
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```
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## GPG Verification Key
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All official release tags are signed by Conformal so users can ensure the code
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has not been tampered with and is coming from Conformal. To verify the
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signature perform the following:
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- Download the public key from the Conformal website at
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https://opensource.conformal.com/GIT-GPG-KEY-conformal.txt
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- Import the public key into your GPG keyring:
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```bash
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gpg --import GIT-GPG-KEY-conformal.txt
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```
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- Verify the release tag with the following command where `TAG_NAME` is a
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placeholder for the specific tag:
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```bash
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git tag -v TAG_NAME
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```
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## What works
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- New addresses can be queried if they are in the wallet file address pool
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- Unknown commands are sent to btcd
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- Unhandled btcd notifications (i.e. new blockchain height) are sent to each
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connected frontend
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- btcd replies are routed back to the correct frontend who initiated the request
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## TODO
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- Create a new wallet if one is not available
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- Update UTXO database based on btcd notifications
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- Require authentication before wallet functionality can be accessed
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- Support TLS
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- Documentation
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- Code cleanup
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- Optimize
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- Much much more. Stay tuned.
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## License
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btcwallet is licensed under the liberal ISC License.
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