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cmd, common, node, rpc: move HTTP RPC into node, drop singletone aspect

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This commit is contained in:
Péter Szilágyi 2016-02-05 13:45:36 +02:00
parent ba7c125153
commit a13bc9d7a1
10 changed files with 280 additions and 221 deletions
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5
cmd/geth/main.go
View File

@ -503,11 +503,6 @@ func startNode(ctx *cli.Context, stack *node.Node) {
}
}
// Start auxiliary services if enabled
if ctx.GlobalBool(utils.RPCEnabledFlag.Name) {
if err := utils.StartRPC(stack, ctx); err != nil {
utils.Fatalf("Failed to start RPC: %v", err)
}
}
if ctx.GlobalBool(utils.WSEnabledFlag.Name) {
if err := utils.StartWS(stack, ctx); err != nil {
utils.Fatalf("Failed to start WS: %v", err)

37
cmd/gethrpctest/main.go
View File

@ -18,7 +18,6 @@
package main
import (
"errors"
"flag"
"io/ioutil"
"log"
@ -26,10 +25,10 @@ import (
"os/signal"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/tests"
@ -84,12 +83,6 @@ func main() {
}
log.Println("Initial test suite passed...")
// Start the RPC interface and wait until terminated
if err := StartRPC(stack); err != nil {
log.Fatalf("Failed to start RPC interface: %v", err)
}
log.Println("RPC Interface started, accepting requests...")
quit := make(chan os.Signal, 1)
signal.Notify(quit, os.Interrupt)
<-quit
@ -99,7 +92,13 @@ func main() {
// keystore path and initial pre-state.
func MakeSystemNode(keydir string, privkey string, test *tests.BlockTest) (*node.Node, error) {
// Create a networkless protocol stack
stack, err := node.New(&node.Config{IpcPath: node.DefaultIpcEndpoint(), NoDiscovery: true})
stack, err := node.New(&node.Config{
IpcPath: node.DefaultIpcEndpoint(),
HttpHost: common.DefaultHttpHost,
HttpPort: common.DefaultHttpPort,
HttpModules: []string{"admin", "db", "eth", "debug", "miner", "net", "shh", "txpool", "personal", "web3"},
NoDiscovery: true,
})
if err != nil {
return nil, err
}
@ -164,23 +163,3 @@ func RunTest(stack *node.Node, test *tests.BlockTest) error {
}
return nil
}
// StartRPC initializes an RPC interface to the given protocol stack.
func StartRPC(stack *node.Node) error {
/*
web3 := NewPublicWeb3API(stack)
server.RegisterName("web3", web3)
net := NewPublicNetAPI(stack.Server(), ethereum.NetVersion())
server.RegisterName("net", net)
*/
for _, api := range stack.APIs() {
if adminApi, ok := api.Service.(*node.PrivateAdminAPI); ok {
_, err := adminApi.StartRPC("127.0.0.1", 8545, "", "admin,db,eth,debug,miner,net,shh,txpool,personal,web3")
return err
}
}
glog.V(logger.Error).Infof("Unable to start RPC-HTTP interface, could not find admin API")
return errors.New("Unable to start RPC-HTTP interface")
}

48
cmd/utils/flags.go
View File

@ -233,12 +233,12 @@ var (
RPCListenAddrFlag = cli.StringFlag{
Name: "rpcaddr",
Usage: "HTTP-RPC server listening interface",
Value: "127.0.0.1",
Value: common.DefaultHttpHost,
}
RPCPortFlag = cli.IntFlag{
Name: "rpcport",
Usage: "HTTP-RPC server listening port",
Value: 8545,
Value: common.DefaultHttpPort,
}
RPCCORSDomainFlag = cli.StringFlag{
Name: "rpccorsdomain",
@ -262,7 +262,7 @@ var (
IPCPathFlag = DirectoryFlag{
Name: "ipcpath",
Usage: "Filename for IPC socket/pipe within the datadir (explicit paths escape it)",
Value: DirectoryString{common.DefaultIpcSocket()},
Value: DirectoryString{common.DefaultIpcSocket},
}
WSEnabledFlag = cli.BoolFlag{
Name: "ws",
@ -271,12 +271,12 @@ var (
WSListenAddrFlag = cli.StringFlag{
Name: "wsaddr",
Usage: "WS-RPC server listening interface",
Value: "127.0.0.1",
Value: common.DefaultWsHost,
}
WSPortFlag = cli.IntFlag{
Name: "wsport",
Usage: "WS-RPC server listening port",
Value: 8546,
Value: common.DefaultWsPort,
}
WSApiFlag = cli.StringFlag{
Name: "wsapi",
@ -284,7 +284,7 @@ var (
Value: rpc.DefaultHttpRpcApis,
}
WSAllowedDomainsFlag = cli.StringFlag{
Name: "wsdomains",
Name: "wscors",
Usage: "Domains from which to accept websockets requests",
Value: "",
}
@ -482,6 +482,15 @@ func MakeNAT(ctx *cli.Context) nat.Interface {
return natif
}
// MakeHttpRpcHost creates the HTTP RPC listener interface string from the set
// command line flags, returning empty if the HTTP endpoint is disabled.
func MakeHttpRpcHost(ctx *cli.Context) string {
if !ctx.GlobalBool(RPCEnabledFlag.Name) {
return ""
}
return ctx.GlobalString(RPCListenAddrFlag.Name)
}
// MakeGenesisBlock loads up a genesis block from an input file specified in the
// command line, or returns the empty string if none set.
func MakeGenesisBlock(ctx *cli.Context) string {
@ -591,7 +600,6 @@ func MakeSystemNode(name, version string, extra []byte, ctx *cli.Context) *node.
// Configure the node's service container
stackConf := &node.Config{
DataDir: MustMakeDataDir(ctx),
IpcPath: MakeIpcPath(ctx),
PrivateKey: MakeNodeKey(ctx),
Name: MakeNodeName(name, version, ctx),
NoDiscovery: ctx.GlobalBool(NoDiscoverFlag.Name),
@ -600,6 +608,11 @@ func MakeSystemNode(name, version string, extra []byte, ctx *cli.Context) *node.
NAT: MakeNAT(ctx),
MaxPeers: ctx.GlobalInt(MaxPeersFlag.Name),
MaxPendingPeers: ctx.GlobalInt(MaxPendingPeersFlag.Name),
IpcPath: MakeIpcPath(ctx),
HttpHost: MakeHttpRpcHost(ctx),
HttpPort: ctx.GlobalInt(RPCPortFlag.Name),
HttpCors: ctx.GlobalString(RPCCORSDomainFlag.Name),
HttpModules: strings.Split(ctx.GlobalString(RPCApiFlag.Name), ","),
}
// Configure the Ethereum service
accman := MakeAccountManager(ctx)
@ -744,27 +757,6 @@ func MakeChain(ctx *cli.Context) (chain *core.BlockChain, chainDb ethdb.Database
return chain, chainDb
}
// StartRPC starts a HTTP JSON-RPC API server.
func StartRPC(stack *node.Node, ctx *cli.Context) error {
for _, api := range stack.APIs() {
if adminApi, ok := api.Service.(*node.PrivateAdminAPI); ok {
address := ctx.GlobalString(RPCListenAddrFlag.Name)
port := ctx.GlobalInt(RPCPortFlag.Name)
cors := ctx.GlobalString(RPCCORSDomainFlag.Name)
apiStr := ""
if ctx.GlobalIsSet(RPCApiFlag.Name) {
apiStr = ctx.GlobalString(RPCApiFlag.Name)
}
_, err := adminApi.StartRPC(address, port, cors, apiStr)
return err
}
}
glog.V(logger.Error).Infof("Unable to start RPC-HTTP interface, could not find admin API")
return errors.New("Unable to start RPC-HTTP interface")
}
// StartWS starts a websocket JSON-RPC API server.
func StartWS(stack *node.Node, ctx *cli.Context) error {
for _, api := range stack.APIs() {

48
common/defaults.go Normal file
View File

@ -0,0 +1,48 @@
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package common
import (
"path/filepath"
"runtime"
)
const (
DefaultIpcSocket = "geth.ipc" // Default (relative) name of the IPC RPC socket
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
)
// DefaultDataDir is the default data directory to use for the databases and other
// persistence requirements.
func DefaultDataDir() string {
// Try to place the data folder in the user's home dir
home := HomeDir()
if home != "" {
if runtime.GOOS == "darwin" {
return filepath.Join(home, "Library", "Ethereum")
} else if runtime.GOOS == "windows" {
return filepath.Join(home, "AppData", "Roaming", "Ethereum")
} else {
return filepath.Join(home, ".ethereum")
}
}
// As we cannot guess a stable location, return empty and handle later
return ""
}

22
common/path.go
View File

@ -72,25 +72,3 @@ func HomeDir() string {
}
return ""
}
func DefaultDataDir() string {
// Try to place the data folder in the user's home dir
home := HomeDir()
if home != "" {
if runtime.GOOS == "darwin" {
return filepath.Join(home, "Library", "Ethereum")
} else if runtime.GOOS == "windows" {
return filepath.Join(home, "AppData", "Roaming", "Ethereum")
} else {
return filepath.Join(home, ".ethereum")
}
}
// As we cannot guess a stable location, return empty and handle later
return ""
}
// DefaultIpcSocket returns the relative name of the default IPC socket. The path
// resolution is done by a node with other contextual infos.
func DefaultIpcSocket() string {
return "geth.ipc"
}

46
node/api.go
View File

@ -27,7 +27,6 @@ import (
"github.com/ethereum/go-ethereum/p2p/discover"
"github.com/ethereum/go-ethereum/rpc"
"github.com/rcrowley/go-metrics"
"gopkg.in/fatih/set.v0"
)
@ -61,42 +60,29 @@ func (api *PrivateAdminAPI) AddPeer(url string) (bool, error) {
}
// StartRPC starts the HTTP RPC API server.
func (api *PrivateAdminAPI) StartRPC(address string, port int, cors string, apis string) (bool, error) {
var offeredAPIs []rpc.API
if len(apis) > 0 {
namespaces := set.New()
for _, a := range strings.Split(apis, ",") {
namespaces.Add(strings.TrimSpace(a))
}
for _, api := range api.node.APIs() {
if namespaces.Has(api.Namespace) {
offeredAPIs = append(offeredAPIs, api)
}
}
} else { // use by default all public API's
for _, api := range api.node.APIs() {
if api.Public {
offeredAPIs = append(offeredAPIs, api)
}
}
}
func (api *PrivateAdminAPI) StartRPC(host string, port int, cors string, apis string) (bool, error) {
api.node.lock.Lock()
defer api.node.lock.Unlock()
if address == "" {
address = "127.0.0.1"
if api.node.httpHandler != nil {
return false, fmt.Errorf("HTTP RPC already running on %s", api.node.httpEndpoint)
}
if port == 0 {
port = 8545
if err := api.node.startHTTP(fmt.Sprintf("%s:%d", host, port), api.node.rpcAPIs, strings.Split(apis, ","), cors); err != nil {
return false, err
}
corsDomains := strings.Split(cors, " ")
err := rpc.StartHTTP(address, port, corsDomains, offeredAPIs)
return err == nil, err
return true, nil
}
// StopRPC terminates an already running HTTP RPC API endpoint.
func (api *PrivateAdminAPI) StopRPC() (bool, error) {
err := rpc.StopHTTP()
return err == nil, err
api.node.lock.Lock()
defer api.node.lock.Unlock()
if api.node.httpHandler == nil {
return false, fmt.Errorf("HTTP RPC not running")
}
api.node.stopHTTP()
return true, nil
}
// StartWS starts the websocket RPC API server.

37
node/config.go
View File

@ -19,6 +19,7 @@ package node
import (
"crypto/ecdsa"
"encoding/json"
"fmt"
"io/ioutil"
"net"
"os"
@ -97,6 +98,25 @@ type Config struct {
// handshake phase, counted separately for inbound and outbound connections.
// Zero defaults to preset values.
MaxPendingPeers int
// 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
// 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
// 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
}
// IpcEndpoint resolves an IPC endpoint based on a configured value, taking into
@ -126,10 +146,25 @@ func (c *Config) IpcEndpoint() string {
// DefaultIpcEndpoint returns the IPC path used by default.
func DefaultIpcEndpoint() string {
config := &Config{DataDir: common.DefaultDataDir(), IpcPath: common.DefaultIpcSocket()}
config := &Config{DataDir: common.DefaultDataDir(), IpcPath: common.DefaultIpcSocket}
return config.IpcEndpoint()
}
// HttpEndpoint resolves an HTTP endpoint based on the configured host interface
// and port parameters.
func (c *Config) HttpEndpoint() string {
if c.HttpHost == "" {
return ""
}
return fmt.Sprintf("%s:%d", c.HttpHost, c.HttpPort)
}
// DefaultHttpEndpoint returns the HTTP endpoint used by default.
func DefaultHttpEndpoint() string {
config := &Config{HttpHost: common.DefaultHttpHost, HttpPort: common.DefaultHttpPort}
return config.HttpEndpoint()
}
// NodeKey retrieves the currently configured private key of the node, checking
// first any manually set key, falling back to the one found in the configured
// data folder. If no key can be found, a new one is generated.

194
node/node.go
View File

@ -55,10 +55,17 @@ type Node struct {
serviceFuncs []ServiceConstructor // Service constructors (in dependency order)
services map[reflect.Type]Service // Currently running services
rpcAPIs []rpc.API // List of APIs currently provided by the node
ipcEndpoint string // IPC endpoint to listen at (empty = IPC disabled)
ipcListener net.Listener // IPC RPC listener socket to serve API requests
ipcHandler *rpc.Server // IPC RPC request handler to process the API requests
httpEndpoint string // HTTP endpoint (interface + port) to listen at (empty = HTTP disabled)
httpWhitelist []string // HTTP RPC modules to allow through this endpoint
httpCors string // HTTP RPC Cross-Origin Resource Sharing header
httpListener net.Listener // HTTP RPC listener socket to server API requests
httpHandler *rpc.Server // HTTP RPC request handler to process the API requests
stop chan struct{} // Channel to wait for termination notifications
lock sync.RWMutex
}
@ -93,9 +100,12 @@ func New(conf *Config) (*Node, error) {
MaxPeers: conf.MaxPeers,
MaxPendingPeers: conf.MaxPendingPeers,
},
serviceFuncs: []ServiceConstructor{},
ipcEndpoint: conf.IpcEndpoint(),
eventmux: new(event.TypeMux),
serviceFuncs: []ServiceConstructor{},
ipcEndpoint: conf.IpcEndpoint(),
httpEndpoint: conf.HttpEndpoint(),
httpWhitelist: conf.HttpModules,
httpCors: conf.HttpCors,
eventmux: new(event.TypeMux),
}, nil
}
@ -188,58 +198,146 @@ func (n *Node) Start() error {
return nil
}
// startRPC initializes and starts the IPC RPC endpoints.
// startRPC is a helper method to start all the various RPC endpoint during node
// startup. It's not meant to be called at any time afterwards as it makes certain
// assumptions about the state of the node.
func (n *Node) startRPC(services map[reflect.Type]Service) error {
// Gather and register all the APIs exposed by the services
// Gather all the possible APIs to surface
apis := n.apis()
for _, service := range services {
apis = append(apis, service.APIs()...)
}
ipcHandler := rpc.NewServer()
for _, api := range apis {
if err := ipcHandler.RegisterName(api.Namespace, api.Service); err != nil {
return err
}
glog.V(logger.Debug).Infof("Register %T under namespace '%s'", api.Service, api.Namespace)
// Start the various API endpoints, terminating all in case of errors
if err := n.startIPC(apis); err != nil {
return err
}
// All APIs registered, start the IPC and HTTP listeners
var (
ipcListener net.Listener
err error
)
if n.ipcEndpoint != "" {
if ipcListener, err = rpc.CreateIPCListener(n.ipcEndpoint); err != nil {
return err
}
go func() {
glog.V(logger.Info).Infof("IPC endpoint opened: %s", n.ipcEndpoint)
defer glog.V(logger.Info).Infof("IPC endpoint closed: %s", n.ipcEndpoint)
if err := n.startHTTP(n.httpEndpoint, apis, n.httpWhitelist, n.httpCors); err != nil {
n.stopIPC()
return err
}
// All API endpoints started successfully
n.rpcAPIs = apis
return nil
}
for {
conn, err := ipcListener.Accept()
if err != nil {
// Terminate if the listener was closed
n.lock.RLock()
closed := n.ipcListener == nil
n.lock.RUnlock()
if closed {
return
}
// Not closed, just some error; report and continue
glog.V(logger.Error).Infof("IPC accept failed: %v", err)
continue
}
go ipcHandler.ServeCodec(rpc.NewJSONCodec(conn))
}
}()
// startIPC initializes and starts the IPC RPC endpoint.
func (n *Node) startIPC(apis []rpc.API) error {
// Short circuit if the IPC endpoint isn't being exposed
if n.ipcEndpoint == "" {
return nil
}
// Register all the APIs exposed by the services
handler := rpc.NewServer()
for _, api := range apis {
if err := handler.RegisterName(api.Namespace, api.Service); err != nil {
return err
}
glog.V(logger.Debug).Infof("IPC registered %T under '%s'", api.Service, api.Namespace)
}
// All APIs registered, start the IPC listener
var (
listener net.Listener
err error
)
if listener, err = rpc.CreateIPCListener(n.ipcEndpoint); err != nil {
return err
}
go func() {
glog.V(logger.Info).Infof("IPC endpoint opened: %s", n.ipcEndpoint)
for {
conn, err := listener.Accept()
if err != nil {
// Terminate if the listener was closed
n.lock.RLock()
closed := n.ipcListener == nil
n.lock.RUnlock()
if closed {
return
}
// Not closed, just some error; report and continue
glog.V(logger.Error).Infof("IPC accept failed: %v", err)
continue
}
go handler.ServeCodec(rpc.NewJSONCodec(conn))
}
}()
// All listeners booted successfully
n.ipcListener = ipcListener
n.ipcHandler = ipcHandler
n.ipcListener = listener
n.ipcHandler = handler
return nil
}
// stopIPC terminates the IPC RPC endpoint.
func (n *Node) stopIPC() {
if n.ipcListener != nil {
n.ipcListener.Close()
n.ipcListener = nil
glog.V(logger.Info).Infof("IPC endpoint closed: %s", n.ipcEndpoint)
}
if n.ipcHandler != nil {
n.ipcHandler.Stop()
n.ipcHandler = nil
}
}
// startHTTP initializes and starts the HTTP RPC endpoint.
func (n *Node) startHTTP(endpoint string, apis []rpc.API, modules []string, cors string) error {
// Short circuit if the IPC endpoint isn't being exposed
if endpoint == "" {
return nil
}
// Generate the whitelist based on the allowed modules
whitelist := make(map[string]bool)
for _, module := range modules {
whitelist[module] = true
}
// Register all the APIs exposed by the services
handler := rpc.NewServer()
for _, api := range apis {
if whitelist[api.Namespace] || (len(whitelist) == 0 && api.Public) {
if err := handler.RegisterName(api.Namespace, api.Service); err != nil {
return err
}
glog.V(logger.Debug).Infof("HTTP registered %T under '%s'", api.Service, api.Namespace)
}
}
// All APIs registered, start the HTTP listener
var (
listener net.Listener
err error
)
if listener, err = net.Listen("tcp", endpoint); err != nil {
return err
}
go rpc.NewHTTPServer(cors, handler).Serve(listener)
glog.V(logger.Info).Infof("HTTP endpoint opened: http://%s", endpoint)
// All listeners booted successfully
n.httpEndpoint = endpoint
n.httpListener = listener
n.httpHandler = handler
n.httpCors = cors
return nil
}
// stopHTTP terminates the HTTP RPC endpoint.
func (n *Node) stopHTTP() {
if n.httpListener != nil {
n.httpListener.Close()
n.httpListener = nil
glog.V(logger.Info).Infof("HTTP endpoint closed: http://%s", n.httpEndpoint)
}
if n.httpHandler != nil {
n.httpHandler.Stop()
n.httpHandler = nil
}
}
// Stop terminates a running node along with all it's services. In the node was
// not started, an error is returned.
func (n *Node) Stop() error {
@ -251,14 +349,10 @@ func (n *Node) Stop() error {
return ErrNodeStopped
}
// Otherwise terminate the API, all services and the P2P server too
if n.ipcListener != nil {
n.ipcListener.Close()
n.ipcListener = nil
}
if n.ipcHandler != nil {
n.ipcHandler.Stop()
n.ipcHandler = nil
}
n.stopIPC()
n.stopHTTP()
n.rpcAPIs = nil
failure := &StopError{
Services: make(map[reflect.Type]error),
}

61
rpc/http.go
View File

@ -20,7 +20,6 @@ import (
"bufio"
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
@ -29,7 +28,6 @@ import (
"net/url"
"strconv"
"strings"
"sync"
"time"
"github.com/ethereum/go-ethereum/logger"
@ -41,12 +39,6 @@ const (
httpReadDeadLine = 60 * time.Second // wait max httpReadDeadeline for next request
)
var (
httpServerMu sync.Mutex // prevent concurrent access to the httpListener and httpServer
httpListener net.Listener // listener for the http server
httpRPCServer *Server // the node can only start 1 HTTP RPC server instance
)
// httpMessageStream is the glue between a HTTP connection which is message based
// and the RPC codecs that expect json requests to be read from a stream. It will
// parse HTTP messages and offer the bodies of these requests as a stream through
@ -249,53 +241,14 @@ func (h *httpConnHijacker) ServeHTTP(w http.ResponseWriter, req *http.Request) {
go h.rpcServer.ServeCodec(codec)
}
// StartHTTP will start the JSONRPC HTTP RPC interface when its not yet running.
func StartHTTP(address string, port int, corsdomains []string, apis []API) error {
httpServerMu.Lock()
defer httpServerMu.Unlock()
if httpRPCServer != nil {
return fmt.Errorf("HTTP RPC interface already started on %s", httpListener.Addr())
// NewHTTPServer creates a new HTTP RPC server around an API provider.
func NewHTTPServer(cors string, handler *Server) *http.Server {
return &http.Server{
Handler: &httpConnHijacker{
corsdomains: strings.Split(cors, ","),
rpcServer: handler,
},
}
rpcServer := NewServer()
for _, api := range apis {
if err := rpcServer.RegisterName(api.Namespace, api.Service); err != nil {
return err
}
}
listener, err := net.Listen("tcp", fmt.Sprintf("%s:%d", address, port))
if err != nil {
return err
}
httpServer := http.Server{Handler: &httpConnHijacker{corsdomains, rpcServer}}
go httpServer.Serve(listener)
httpListener = listener
httpRPCServer = rpcServer
return nil
}
// StopHTTP will stop the running HTTP interface. If it is not running an error will be returned.
func StopHTTP() error {
httpServerMu.Lock()
defer httpServerMu.Unlock()
if httpRPCServer == nil {
return errors.New("HTTP RPC interface not started")
}
httpListener.Close()
httpRPCServer.Stop()
httpRPCServer = nil
httpListener = nil
return nil
}
// httpClient connects to a geth RPC server over HTTP.

3
rpc/utils.go
View File

@ -20,13 +20,12 @@ import (
"crypto/rand"
"encoding/hex"
"errors"
"fmt"
"math/big"
"reflect"
"unicode"
"unicode/utf8"
"fmt"
"golang.org/x/net/context"
)