node

Documentation

Index

• Constants
• Variables
• func DefaultHTTPEndpoint() string
• func DefaultWSEndpoint() string
• type Config
  • func (c *Config) AccountConfig() (int, int, string, error)
  • func (c *Config) ExtRPCEnabled() bool
  • func (c *Config) HTTPEndpoint() string
  • func (c *Config) WSEndpoint() string
• type Node
  • func New(conf *Config) (*Node, error)
  • func (n *Node) AccountManager() *accounts.Manager
  • func (n *Node) Config() *Config
  • func (n *Node) EventMux() *event.TypeMux
  • func (n *Node) RegisterAPIs(apis []rpc.API)

Constants

const (
	DefaultHTTPHost    = "localhost" // Default host interface for the HTTP RPC server
	DefaultHTTPPort    = 8545        // Default TCP port for the HTTP RPC server
	DefaultWSHost      = "localhost" // Default host interface for the websocket RPC server
	DefaultWSPort      = 8546        // Default TCP port for the websocket RPC server
	DefaultGraphQLHost = "localhost" // Default host interface for the GraphQL server
	DefaultGraphQLPort = 8547        // Default TCP port for the GraphQL server
)

Variables

var DefaultConfig = Config{
	HTTPPort:            DefaultHTTPPort,
	HTTPModules:         []string{"net", "web3"},
	HTTPVirtualHosts:    []string{"localhost"},
	HTTPTimeouts:        rpc.DefaultHTTPTimeouts,
	WSPort:              DefaultWSPort,
	WSModules:           []string{"net", "web3"},
	GraphQLVirtualHosts: []string{"localhost"},
}

DefaultConfig contains reasonable default settings.

var (
	ErrNodeStopped = errors.New("node not started")
)

Functions

func DefaultHTTPEndpoint

func DefaultHTTPEndpoint() string

DefaultHTTPEndpoint returns the HTTP endpoint used by default.

func DefaultWSEndpoint

func DefaultWSEndpoint() string

DefaultWSEndpoint returns the websocket endpoint used by default.

Types

type Config

type Config struct {
	// KeyStoreDir is the file system folder that contains private keys. The directory can
	// be specified as a relative path, in which case it is resolved relative to the
	// current directory.
	//
	// If KeyStoreDir is empty, the default location is the "keystore" subdirectory of
	// DataDir. If DataDir is unspecified and KeyStoreDir is empty, an ephemeral directory
	// is created by New and destroyed when the node is stopped.
	KeyStoreDir string `toml:",omitempty"`

	// ExternalSigner specifies an external URI for a clef-type signer
	ExternalSigner string `toml:",omitempty"`

	// UseLightweightKDF lowers the memory and CPU requirements of the key store
	// scrypt KDF at the expense of security.
	UseLightweightKDF bool `toml:",omitempty"`

	// InsecureUnlockAllowed allows user to unlock accounts in unsafe http environment.
	InsecureUnlockAllowed bool `toml:",omitempty"`

	// HTTPHost is the host interface on which to start the HTTP RPC server. If this
	// field is empty, no HTTP API endpoint will be started.
	HTTPHost string

	// HTTPPort is the TCP port number on which to start the HTTP RPC server. The
	// default zero value is/ valid and will pick a port number randomly (useful
	// for ephemeral nodes).
	HTTPPort int `toml:",omitempty"`

	// HTTPCors is the Cross-Origin Resource Sharing header to send to requesting
	// clients. Please be aware that CORS is a browser enforced security, it's fully
	// useless for custom HTTP clients.
	HTTPCors []string `toml:",omitempty"`

	// HTTPVirtualHosts is the list of virtual hostnames which are allowed on incoming requests.
	// This is by default {'localhost'}. Using this prevents attacks like
	// DNS rebinding, which bypasses SOP by simply masquerading as being within the same
	// origin. These attacks do not utilize CORS, since they are not cross-domain.
	// By explicitly checking the Host-header, the server will not allow requests
	// made against the server with a malicious host domain.
	// Requests using ip address directly are not affected
	HTTPVirtualHosts []string `toml:",omitempty"`

	// HTTPModules is a list of API modules to expose via the HTTP RPC interface.
	// If the module list is empty, all RPC API endpoints designated public will be
	// exposed.
	HTTPModules []string

	// HTTPTimeouts allows for customization of the timeout values used by the HTTP RPC
	// interface.
	HTTPTimeouts rpc.HTTPTimeouts

	// WSHost is the host interface on which to start the websocket RPC server. If
	// this field is empty, no websocket API endpoint will be started.
	WSHost string

	// WSPort is the TCP port number on which to start the websocket RPC server. The
	// default zero value is/ valid and will pick a port number randomly (useful for
	// ephemeral nodes).
	WSPort int `toml:",omitempty"`

	// WSOrigins is the list of domain to accept websocket requests from. Please be
	// aware that the server can only act upon the HTTP request the client sends and
	// cannot verify the validity of the request header.
	WSOrigins []string `toml:",omitempty"`

	// WSModules is a list of API modules to expose via the websocket RPC interface.
	// If the module list is empty, all RPC API endpoints designated public will be
	// exposed.
	WSModules []string

	// WSExposeAll exposes all API modules via the WebSocket RPC interface rather
	// than just the public ones.
	//
	// *WARNING* Only set this if the node is running in a trusted network, exposing
	// private APIs to untrusted users is a major security risk.
	WSExposeAll bool `toml:",omitempty"`

	// GraphQLCors is the Cross-Origin Resource Sharing header to send to requesting
	// clients. Please be aware that CORS is a browser enforced security, it's fully
	// useless for custom HTTP clients.
	GraphQLCors []string `toml:",omitempty"`

	// GraphQLVirtualHosts is the list of virtual hostnames which are allowed on incoming requests.
	// This is by default {'localhost'}. Using this prevents attacks like
	// DNS rebinding, which bypasses SOP by simply masquerading as being within the same
	// origin. These attacks do not utilize CORS, since they are not cross-domain.
	// By explicitly checking the Host-header, the server will not allow requests
	// made against the server with a malicious host domain.
	// Requests using ip address directly are not affected
	GraphQLVirtualHosts []string `toml:",omitempty"`

	CorethVersion string
}

Config represents a small collection of configuration values to fine tune the P2P network layer of a protocol stack. These values can be further extended by all registered services.

func (*Config) AccountConfig

func (c *Config) AccountConfig() (int, int, string, error)

AccountConfig determines the settings for scrypt and keydirectory

func (*Config) ExtRPCEnabled

func (c *Config) ExtRPCEnabled() bool

ExtRPCEnabled returns the indicator whether node enables the external RPC(http, ws or graphql).

func (*Config) HTTPEndpoint

func (c *Config) HTTPEndpoint() string

HTTPEndpoint resolves an HTTP endpoint based on the configured host interface and port parameters.

func (*Config) WSEndpoint

func (c *Config) WSEndpoint() string

WSEndpoint resolves a websocket endpoint based on the configured host interface and port parameters.

type Node

type Node struct {
	// contains filtered or unexported fields
}

Node is a container on which services can be registered.

func New

func New(conf *Config) (*Node, error)

New creates a new P2P node, ready for protocol registration.

func (*Node) AccountManager

func (n *Node) AccountManager() *accounts.Manager

AccountManager retrieves the account manager used by the protocol stack.

func (*Node) Config

func (n *Node) Config() *Config

Config returns the configuration of node.

func (*Node) EventMux

func (n *Node) EventMux() *event.TypeMux

EventMux retrieves the event multiplexer used by all the network services in the current protocol stack.

func (*Node) RegisterAPIs

func (n *Node) RegisterAPIs(apis []rpc.API)

RegisterAPIs registers the APIs a service provides on the node.