node

package
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 Go to latest Published: Jan 4, 2024 License: MIT Imports: 34 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	DefaultHTTPHost = "localhost" // Default host interface for the HTTP RPC server
	DefaultHTTPPort = 8645        // Default TCP port for the HTTP RPC server
	DefaultWSHost   = "localhost" // Default host interface for the websocket RPC server
	DefaultWSPort   = 8646        // Default TCP port for the websocket RPC server
	DefaultAuthHost = "localhost" // Default host interface for the authenticated apis
	DefaultAuthPort = 8651        // Default port for the authenticated apis
)

Variables

View Source 
var (
	DefaultAuthCors    = []string{"localhost"} // Default cors domain for the authenticated apis
	DefaultAuthVhosts  = []string{"localhost"} // Default virtual hosts for the authenticated apis
	DefaultAuthOrigins = []string{"localhost"} // Default origins for the authenticated apis
	DefaultAuthPrefix  = ""                    // Default prefix for the authenticated apis
	DefaultAuthModules = []string{"eth", "engine"}
)
View Source 
var DefaultConfig = Config{
	DataDir:              DefaultDataDir(),
	HTTPPort:             DefaultHTTPPort,
	AuthAddr:             DefaultAuthHost,
	AuthPort:             DefaultAuthPort,
	AuthVirtualHosts:     DefaultAuthVhosts,
	HTTPModules:          []string{"net", "web3"},
	HTTPVirtualHosts:     []string{"localhost"},
	HTTPTimeouts:         rpc.DefaultHTTPTimeouts,
	WSPort:               DefaultWSPort,
	WSModules:            []string{"net", "web3"},
	BatchRequestLimit:    1000,
	BatchResponseMaxSize: 25 * 1000 * 1000,
	GraphQLVirtualHosts:  []string{"localhost"},
	DBEngine:             "",
}

DefaultConfig contains reasonable default settings.

Functions

func DefaultDataDir 

func DefaultDataDir() string

DefaultDataDir is the default data directory to use for the databases and other persistence requirements.

func NewHTTPHandlerStack 

func NewHTTPHandlerStack(srv http.Handler, cors []string, vhosts []string, jwtSecret []byte) http.Handler

NewHTTPHandlerStack returns wrapped http-related handlers

func NewWSHandlerStack 

func NewWSHandlerStack(srv http.Handler, jwtSecret []byte) http.Handler

NewWSHandlerStack returns a wrapped ws-related handler.

Types

type Config 

type Config struct {
	// Name sets the instance name of the node. It must not contain the / character.
	// The instance name of mive is "mive". If no value is specified, the basename
	// of the current executable is used.
	Name string `toml:"-"`

	// Version should be set to the version number of the program.
	Version string `toml:"-"`

	// DataDir is the file system folder the node should use for any data storage
	// requirements. The configured data directory will not be directly shared with
	// registered services, instead those can use utility methods to create/access
	// databases or flat files. This enables ephemeral nodes which can fully reside
	// in memory.
	DataDir string

	// 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"`

	// USB enables hardware wallet monitoring and connectivity.
	USB bool `toml:",omitempty"`

	// IPCPath is the requested location to place the IPC endpoint. If the path is
	// a simple file name, it is placed inside the data directory (or on the root
	// pipe path on Windows), whereas if it's a resolvable path name (absolute or
	// relative), then that specific path is enforced. An empty path disables IPC.
	IPCPath string

	// 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

	// HTTPPathPrefix specifies a path prefix on which http-rpc is to be served.
	HTTPPathPrefix string `toml:",omitempty"`

	// AuthAddr is the listening address on which authenticated APIs are provided.
	AuthAddr string `toml:",omitempty"`

	// AuthPort is the port number on which authenticated APIs are provided.
	AuthPort int `toml:",omitempty"`

	// AuthVirtualHosts is the list of virtual hostnames which are allowed on incoming requests
	// for the authenticated api. This is by default {'localhost'}.
	AuthVirtualHosts []string `toml:",omitempty"`

	// 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"`

	// WSPathPrefix specifies a path prefix on which ws-rpc is to be served.
	WSPathPrefix string `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"`

	// AllowUnprotectedTxs allows non EIP-155 protected transactions to be send over RPC.
	AllowUnprotectedTxs bool `toml:",omitempty"`

	// Logger is a custom logger to use with the Node.
	Logger log.Logger `toml:",omitempty"`

	// BatchRequestLimit is the maximum number of requests in a batch.
	BatchRequestLimit int `toml:",omitempty"`

	// BatchResponseMaxSize is the maximum number of bytes returned from a batched rpc call.
	BatchResponseMaxSize int `toml:",omitempty"`

	// JWTSecret is the path to the hex-encoded jwt secret.
	JWTSecret string `toml:",omitempty"`

	DBEngine string `toml:",omitempty"`
}

Config represents a small collection of configuration values. These values can be further extended by all registered services.

func (*Config) ExtRPCEnabled 

func (c *Config) ExtRPCEnabled() bool

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

func (*Config) GetKeyStoreDir 

func (c *Config) GetKeyStoreDir() (string, bool, error)

GetKeyStoreDir retrieves the key directory and will create and ephemeral one if necessary.

func (*Config) HTTPEndpoint 

func (c *Config) HTTPEndpoint() string

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

func (*Config) IPCEndpoint 

func (c *Config) IPCEndpoint() string

IPCEndpoint resolves an IPC endpoint based on a configured value, taking into account the set data folders as well as the designated platform we're currently running on.

func (*Config) KeyDirConfig 

func (c *Config) KeyDirConfig() (string, error)

KeyDirConfig determines the settings for keydirectory

func (*Config) ResolvePath 

func (c *Config) ResolvePath(path string) string

ResolvePath resolves path in the instance directory.

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 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) Attach 

func (n *Node) Attach() *rpc.Client

func (*Node) Close 

func (n *Node) Close() error

Close stops the Node and releases resources acquired in Node constructor New.

func (*Node) Config 

func (n *Node) Config() *Config

Config returns the configuration of node.

func (*Node) DataDir 

func (n *Node) DataDir() string

DataDir retrieves the current datadir used by the protocol stack.

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) HTTPAuthEndpoint 

func (n *Node) HTTPAuthEndpoint() string

HTTPAuthEndpoint returns the URL of the authenticated HTTP server.

func (*Node) HTTPEndpoint 

func (n *Node) HTTPEndpoint() string

HTTPEndpoint returns the URL of the HTTP server. Note that this URL does not contain the JSON-RPC path prefix set by HTTPPathPrefix.

func (*Node) IPCEndpoint 

func (n *Node) IPCEndpoint() string

IPCEndpoint retrieves the current IPC endpoint used by the protocol stack.

func (*Node) InstanceDir 

func (n *Node) InstanceDir() string

InstanceDir retrieves the instance directory used by the protocol stack.

func (*Node) KeyStoreDir 

func (n *Node) KeyStoreDir() string

KeyStoreDir retrieves the key directory

func (*Node) OpenDatabase 

func (n *Node) OpenDatabase(name string, cache, handles int, namespace string, readonly bool) (ethdb.Database, error)

OpenDatabase opens an existing database with the given name (or creates one if no previous can be found) from within the node's instance directory. If the node is ephemeral, a memory database is returned.

func (*Node) OpenDatabaseWithFreezer 

func (n *Node) OpenDatabaseWithFreezer(name string, cache, handles int, ancient string, namespace string, readonly bool) (ethdb.Database, error)

OpenDatabaseWithFreezer opens an existing database with the given name (or creates one if no previous can be found) from within the node's data directory, also attaching a chain freezer to it that moves ancient chain data from the database to immutable append-only files. If the node is an ephemeral one, a memory database is returned.

func (*Node) RPCHandler 

func (n *Node) RPCHandler() (*rpc.Server, error)

RPCHandler returns the in-process RPC request handler.

func (*Node) RegisterAPIs 

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

RegisterAPIs registers the APIs a service provides on the node.

func (*Node) RegisterHandler 

func (n *Node) RegisterHandler(name, path string, handler http.Handler)

RegisterHandler mounts a handler on the given path on the canonical HTTP server.

The name of the handler is shown in a log message when the HTTP server starts and should be a descriptive term for the service provided by the handler.

func (*Node) RegisterLifecycle 

func (n *Node) RegisterLifecycle(lifecycle node.Lifecycle)

RegisterLifecycle registers the given Lifecycle on the node.

func (*Node) ResolveAncient 

func (n *Node) ResolveAncient(name string, ancient string) string

ResolveAncient returns the absolute path of the root ancient directory.

func (*Node) ResolvePath 

func (n *Node) ResolvePath(x string) string

ResolvePath returns the absolute path of a resource in the instance directory.

func (*Node) Start 

func (n *Node) Start() error

Start starts all registered lifecycles, RPC services and p2p networking. Node can only be started once.

func (*Node) WSAuthEndpoint 

func (n *Node) WSAuthEndpoint() string

WSAuthEndpoint returns the current authenticated JSON-RPC over WebSocket endpoint.

func (*Node) WSEndpoint 

func (n *Node) WSEndpoint() string

WSEndpoint returns the current JSON-RPC over WebSocket endpoint.

func (*Node) Wait 

func (n *Node) Wait()

Wait blocks until the node is closed.

Source Files

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