### Table of Contents 1. [About](#About) 2. [Getting Started](#GettingStarted) 1. [Installation](#Installation) 2. [Configuration](#Configuration) 3. [Controlling and Querying dcrd via dcrctl](#DcrctlConfig) 4. [Mining](#Mining) 3. [Help](#Help) 1. [Network Configuration](#NetworkConfig) 2. [Wallet](#Wallet) 4. [Contact](#Contact) 1. [Community](#ContactCommunity) 5. [Developer Resources](#DeveloperResources) 1. [Code Contribution Guidelines](#ContributionGuidelines) 2. [JSON-RPC Reference](#JSONRPCReference) 3. [Go Modules](#GoModules) 4. [Module Hierarchy](#ModuleHierarchy) ### 1. About dcrd is a full node Decred implementation written in [Go](https://golang.org), and is licensed under the [copyfree](http://www.copyfree.org) ISC License. This software is currently under active development. It is extremely stable and has been in production use since February 2016. It also properly relays newly mined blocks, maintains a transaction pool, and relays individual transactions that have not yet made it into a block. It ensures all individual transactions admitted to the pool follow the rules required into the block chain and also includes the vast majority of the more strict checks which filter transactions based on miner requirements ("standard" transactions). ### 2. Getting Started **2.1 Installation**
The first step is to install dcrd. The installation instructions can be found [here](https://github.com/decred/dcrd/tree/master/README.md#Installation). **2.2 Configuration**
dcrd has a number of [configuration](https://godoc.org/github.com/decred/dcrd) options, which can be viewed by running: `$ dcrd --help`. **2.3 Controlling and Querying dcrd via dcrctl**
dcrctl is a command line utility that can be used to both control and query dcrd via [RPC](https://www.wikipedia.org/wiki/Remote_procedure_call). dcrd does **not** enable its RPC server by default; You must configure at minimum both an RPC username and password or both an RPC limited username and password: * dcrd.conf configuration file ``` [Application Options] rpcuser=myuser rpcpass=SomeDecentp4ssw0rd rpclimituser=mylimituser rpclimitpass=Limitedp4ssw0rd ``` * dcrctl.conf configuration file ``` [Application Options] rpcuser=myuser rpcpass=SomeDecentp4ssw0rd ``` OR ``` [Application Options] rpclimituser=mylimituser rpclimitpass=Limitedp4ssw0rd ``` For a list of available options, run: `$ dcrctl --help` **2.4 Mining**
dcrd supports the [getwork](https://github.com/decred/dcrd/tree/master/docs/json_rpc_api.mediawiki#getwork) RPC. The limited user cannot access this RPC.
**1. Add the payment addresses with the `miningaddr` option.**
``` [Application Options] rpcuser=myuser rpcpass=SomeDecentp4ssw0rd miningaddr=DsExampleAddress1 miningaddr=DsExampleAddress2 ``` **2. Add dcrd's RPC TLS certificate to system Certificate Authority list.**
`cgminer` uses [curl](https://curl.haxx.se/) to fetch data from the RPC server. Since curl validates the certificate by default, we must install the `dcrd` RPC certificate into the default system Certificate Authority list. **Ubuntu**
1. Copy rpc.cert to /usr/share/ca-certificates: `# cp /home/user/.dcrd/rpc.cert /usr/share/ca-certificates/dcrd.crt`
2. Add dcrd.crt to /etc/ca-certificates.conf: `# echo dcrd.crt >> /etc/ca-certificates.conf`
3. Update the CA certificate list: `# update-ca-certificates`
**3. Set your mining software url to use https.**
`$ cgminer -o https://127.0.0.1:9109 -u rpcuser -p rpcpassword` ### 3. Help **3.1 Network Configuration**
* [What Ports Are Used by Default?](https://github.com/decred/dcrd/tree/master/docs/default_ports.md) * [How To Listen on Specific Interfaces](https://github.com/decred/dcrd/tree/master/docs/configure_peer_server_listen_interfaces.md) * [How To Configure RPC Server to Listen on Specific Interfaces](https://github.com/decred/dcrd/tree/master/docs/configure_rpc_server_listen_interfaces.md) * [Configuring dcrd with Tor](https://github.com/decred/dcrd/tree/master/docs/configuring_tor.md) **3.2 Wallet**
dcrd was intentionally developed without an integrated wallet for security reasons. Please see [dcrwallet](https://github.com/decred/dcrwallet) for more information. ### 4. Contact **4.1 Community**
If you have any further questions you can find us at: https://decred.org/community ### 5. Developer Resources **5.1 Code Contribution Guidelines** * [Code Contribution Guidelines](https://github.com/decred/dcrd/tree/master/docs/code_contribution_guidelines.md) **5.2 JSON-RPC Reference** * [JSON-RPC Reference](https://github.com/decred/dcrd/tree/master/docs/json_rpc_api.mediawiki) * [RPC Examples](https://github.com/decred/dcrd/tree/master/docs/json_rpc_api.mediawiki#8-example-code) **5.3 Go Modules** The following versioned modules are provided by dcrd repository: * [rpcclient/v4](https://github.com/decred/dcrd/tree/master/rpcclient) - Implements a robust and easy to use Websocket-enabled Decred JSON-RPC client * [dcrjson/v3](https://github.com/decred/dcrd/tree/master/dcrjson) - Provides infrastructure for working with Decred JSON-RPC APIs * [rpc/jsonrpc/types](https://github.com/decred/dcrd/tree/master/rpc/jsonrpc/types) - Provides concrete types via dcrjson for the chain server JSON-RPC commands, return values, and notifications * [wire](https://github.com/decred/dcrd/tree/master/wire) - Implements the Decred wire protocol * [peer/v2](https://github.com/decred/dcrd/tree/master/peer) - Provides a common base for creating and managing Decred network peers * [blockchain/v2](https://github.com/decred/dcrd/tree/master/blockchain) - Implements Decred block handling and chain selection rules * [stake/v2](https://github.com/decred/dcrd/tree/master/blockchain/stake) - Provides an API for working with stake transactions and other portions related to the Proof-of-Stake (PoS) system * [standalone](https://github.com/decred/dcrd/tree/master/blockchain/standalone) - Provides standalone functions useful for working with the Decred blockchain consensus rules * [txscript/v2](https://github.com/decred/dcrd/tree/master/txscript) - Implements the Decred transaction scripting language * [dcrec](https://github.com/decred/dcrd/tree/master/dcrec) - Provides constants for the supported cryptographic signatures supported by Decred scripts * [secp256k1/v2](https://github.com/decred/dcrd/tree/master/dcrec/secp256k1) - Implements the secp256k1 elliptic curve * [edwards/v2](https://github.com/decred/dcrd/tree/master/dcrec/edwards) - Implements the edwards25519 twisted Edwards curve * [database/v2](https://github.com/decred/dcrd/tree/master/database) - Provides a database interface for the Decred block chain * [mempool/v3](https://github.com/decred/dcrd/tree/master/mempool) - Provides a policy-enforced pool of unmined Decred transactions * [dcrutil/v2](https://github.com/decred/dcrd/tree/master/dcrutil) - Provides Decred-specific convenience functions and types * [chaincfg/v2](https://github.com/decred/dcrd/tree/master/chaincfg) - Defines chain configuration parameters for the standard Decred networks and allows callers to define their own custom Decred networks for testing puproses * [chainhash](https://github.com/decred/dcrd/tree/master/chaincfg/chainhash) - Provides a generic hash type and associated functions that allows the specific hash algorithm to be abstracted * [certgen](https://github.com/decred/dcrd/tree/master/certgen) - Provides a function for creating a new TLS certificate key pair, typically used for encrypting RPC and websocket communications * [addrmgr](https://github.com/decred/dcrd/tree/master/addrmgr) - Provides a concurrency safe Decred network address manager * [connmgr/v2](https://github.com/decred/dcrd/tree/master/connmgr) - Implements a generic Decred network connection manager * [hdkeychain/v2](https://github.com/decred/dcrd/tree/master/hdkeychain) - Provides an API for working with Decred hierarchical deterministic extended keys * [gcs](https://github.com/decred/dcrd/tree/master/gcs) - Provides an API for building and using Golomb-coded set filters useful for light clients such as SPV wallets * [fees](https://github.com/decred/dcrd/tree/master/fees) - Provides methods for tracking and estimating fee rates for new transactions to be mined into the network * [lru](https://github.com/decred/dcrd/tree/master/lru) - Implements a generic concurrent safe least-recently-used cache with near O(1) perf **5.4 Module Hierarchy** The following diagram shows an overview of the hierarchy for the modules provided by the dcrd repository. ![Module Hierarchy](./assets/module_hierarchy.svg)