By default, the mainnet bcoin config files will reside in `~/.bcoin/bcoin.conf` and `~/.bcoin/wallet.conf`.
Any parameter passed to bcoin at startup will have precedence over the config file. Even if you are just running `bclient` without bcoin even installed (to access a remote server, for example) the configuration files would still reside in `~/.bcoin/`

For example:

Running `bcoin --network=regtest --api-key=menace --daemon` will read the config file at `~/.bcoin/regtest/bcoin.conf`
and ignore any `network` or `api-key` parameters listed in that file.

All bcoin configuration options work in the config file, CLI arguments, and
process environment (with a `BCOIN_` prefix).

## Datadir/Prefix

Bcoin's datadir is determined by the `prefix` option.

Example:

``` bash
$ bcoin --prefix ~/.bcoin_spv --spv
```

Will create a datadir of `~/.bcoin_spv`, containing a chain database, wallet database and log file.

## Common Options

- `config`: Points to a custom config file, not in the prefix directory.
- `network`: Which network's chainparams to use for the node (main, testnet, regtest, or simnet) (default: main).
- `workers`: Whether to use a worker process pool for transaction verification (default: true).
- `workers-size`: Number of worker processes to spawn for transaction verification. By default, the worker pool will be sized based on the number of CPUs/cores in the machine.
- `workers-timeout`: Worker process execution timeout in milliseconds (default: 120000).
- `sigcache-size`: Max number of items in signature cache.

## Node Options

- `prefix`: The data directory (stores databases, logs, and configs) (default=~/.bcoin).
- `db`: Which database backend to use (default=leveldb).
- `max-files`: Max open files for leveldb. Higher generally means more disk page cache benefits, but also more memory usage (default: 64).
- `cache-size`: Size (in MB) of leveldb cache and write buffer (default: 32mb).
- `spv`: Enable Simplified Payments Verification (SPV) mode

## Logger Options

- `log-level`: `error`, `warning`, `info`, `debug`, or `spam` (default: debug).
- `log-console`: `true` or `false` - whether to actually write to stdout/stderr
  if foregrounded (default: true).
- `log-file`: Whether to use a log file (default: true).

## Chain Options

Note that certain chain options affect the format and indexing of the chain database and must be passed in consistently each time.

- `prune`: Prune from the last 288 blocks (default: false).
- `checkpoints`: Use checkpoints and getheaders for the initial sync (default: true).
- `coin-cache`: The size (in MB) of the in-memory UTXO cache. By default, there is no UTXO cache enabled. To get a good number of cache hits per block, the coin cache has to be fairly large (60-100mb recommended at least).
- `index-tx`: Index transactions (enables transaction endpoints in REST api) (default: false).
- `index-address`: Index transactions and utxos by address (default: false).

## Mempool Options

- `mempool-size`: Max mempool size in MB (default: 100).
- `replace-by-fee`: Allow replace-by-fee transactions (default: false).
- `persistent-mempool`: Save mempool to disk and read into memory on boot (default: false).

## Pool Options

- `selfish`: Enable "selfish" mode (no relaying of txes or blocks) (default: false).
- `compact`: Enable compact block relay (default: true).
- `bip37`: Enable serving of bip37 merkleblocks (default: false).
- `listen`: Accept incoming connections (default: true).
- `max-outbound`: Max number of outbound connections (default: 8).
- `max-inbound`: Max number of inbound connections (default: 30).
- `seeds`: Custom list of DNS seeds (comma-separated).
- `host`: Host to listen on (default: 0.0.0.0).
- `port`: Port to listen on (default: 8333).
- `public-host`: Public host to advertise on network.
- `public-port`: Public port to advertise on network.
- `nodes`: List of target nodes to connect to (comma-separated).

## Miner Options

- `coinbase-flags`: Coinbase flags (default: mined by bcoin).
- `coinbase-address`: List of payout addresses, randomly selected during block creation (comma-separated).
- `max-block-weight`: Max block weight to mine (default: 4000000).
- `reserved-block-weight`: Amount of space reserved for coinbase (default: 4000).
- `reserved-block-sigops`: Amount of sigops reserved for coinbase (default: 400).

## HTTP

- `http-host`: HTTP host to listen on (default: 127.0.0.1).
- `http-port`: HTTP port to listen on (default: 8332 for mainnet).
- `ssl-cert`: Path to SSL cert.
- `ssl-key`: Path to SSL key.
- `service-key`: Service key (used for accessing wallet system only).
- `api-key`: API key (used for accessing all node APIs, may be different than API key for wallet server).
- `cors`: Enable "Cross-Origin Resource Sharing" HTTP headers (default: false).

Note: For security `cors` should not be used with `no-auth`.\
If enabled you should also enable `wallet-auth` and set `api-key`.

## Wallet options

These options must be saved in `wallet.conf`. They can also be passed as environment variables or command-line variables 
if they are preceeded with a `wallet-` prefix. (See https://github.com/bcoin-org/bcoin/blob/master/CHANGELOG.md#configuration-changes)

For example, to run a bcoin and wallet node on a remote server that you can access from a local machine, you would launch bcoin with the command:

`bcoin --network=testnet --http-host=0.0.0.0 --wallet-http-host=0.0.0.0 --wallet-api-key=hunter2 --wallet-wallet-auth=true`

### bcoin client:

- `node-host`: Location of bcoin node HTTP server (default: localhost).
- `node-port`: Port of bcoin node HTTP server (defaults to RPC port of network).
- `node-ssl`: Whether to use SSL (default: false).
- `node-api-key`: API-key for bcoin HTTP server.

### Wallet database:

- `memory`: Keep database in memory rather than write to disk.
- `max-files`: Max open files for leveldb.
- `cache-size`: Size (in MB) of leveldb cache and write buffer.
- `witness`: Make SegWit enabled wallets.
- `checkpoints`: Trust hard-coded blockchain checkpoints.

### Wallet http server:

- `ssl`: Whether to use SSL (default: false).
- `ssl-key`: Path to SSL key.
- `ssl-cert`: Path to SSL cert.
- `http-host`: HTTP host to listen on (default: 127.0.0.1).
- `http-port`: HTTP port to listen on (default: 8334 for mainnet).
- `api-key`: API key (used for accessing all wallet APIs, may be different than API key for node server).
- `cors`: Enable "Cross-Origin Resource Sharing" HTTP headers (default: false).
- `no-auth`: Disable auth for API server and wallets (default: false).
- `wallet-auth`: Enable token auth for wallets (default: false).
- `admin-token`: Token required if `wallet-auth` is enabled: restricts access to [all wallet admin routes.](http://bcoin.io/api-docs/#wallet-admin-commands)


## Sample Config Files

See https://github.com/bcoin-org/bcoin/blob/master/etc/sample.conf
and https://github.com/bcoin-org/bcoin/blob/master/etc/sample.wallet.conf
