rpc: new RPC implementation with pub/sub support

cmd/geth/js.go

@@ -246,10 +246,10 @@ func (self *jsre) welcome() {
 	self.re.Run(`
     (function () {
       console.log('instance: ' + web3.version.node);
-      console.log(' datadir: ' + admin.datadir);
       console.log("coinbase: " + eth.coinbase);
       var ts = 1000 * eth.getBlock(eth.blockNumber).timestamp;
       console.log("at block: " + eth.blockNumber + " (" + new Date(ts) + ")");
+      console.log(' datadir: ' + admin.datadir);
     })();
   `)
 	if modules, err := self.supportedApis(); err == nil {
@@ -258,7 +258,7 @@ func (self *jsre) welcome() {
 			loadedModules = append(loadedModules, fmt.Sprintf("%s:%s", api, version))
 		}
 		sort.Strings(loadedModules)
-		fmt.Println("modules:", strings.Join(loadedModules, " "))
+
 	}
 }
 
@@ -325,12 +325,28 @@ func (js *jsre) apiBindings(f xeth.Frontend) error {
 	}
 
 	_, err = js.re.Run(shortcuts)
-
 	if err != nil {
 		utils.Fatalf("Error setting namespaces: %v", err)
 	}
 
 	js.re.Run(`var GlobalRegistrar = eth.contract(` + registrar.GlobalRegistrarAbi + `);   registrar = GlobalRegistrar.at("` + registrar.GlobalRegistrarAddr + `");`)
+
+	// overrule some of the methods that require password as input and ask for it interactively
+	p, err := js.re.Get("personal")
+	if err != nil {
+		fmt.Println("Unable to overrule sensitive methods in personal module")
+		return nil
+	}
+
+	// Override the unlockAccount and newAccount methods on the personal object since these require user interaction.
+	// Assign the jeth.unlockAccount and jeth.newAccount in the jsre the original web3 callbacks. These will be called
+	// by the jeth.* methods after they got the password from the user and send the original web3 request to the backend.
+	persObj := p.Object()
+	js.re.Run(`jeth.unlockAccount = personal.unlockAccount;`)
+	persObj.Set("unlockAccount", jeth.UnlockAccount)
+	js.re.Run(`jeth.newAccount = personal.newAccount;`)
+	persObj.Set("newAccount", jeth.NewAccount)
+
 	return nil
 }
 

cmd/geth/js_test.go

@@ -168,7 +168,7 @@ func TestAccounts(t *testing.T) {
 
 	checkEvalJSON(t, repl, `eth.accounts`, `["`+testAddress+`"]`)
 	checkEvalJSON(t, repl, `eth.coinbase`, `"`+testAddress+`"`)
-	val, err := repl.re.Run(`personal.newAccount("password")`)
+	val, err := repl.re.Run(`jeth.newAccount("password")`)
 	if err != nil {
 		t.Errorf("expected no error, got %v", err)
 	}

cmd/geth/main.go

@@ -313,6 +313,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
 		utils.IPCDisabledFlag,
 		utils.IPCApiFlag,
 		utils.IPCPathFlag,
+		utils.IPCExperimental,
 		utils.ExecFlag,
 		utils.WhisperEnabledFlag,
 		utils.DevModeFlag,

cmd/geth/usage.go

@@ -158,6 +158,7 @@ var AppHelpFlagGroups = []flagGroup{
 		Flags: []cli.Flag{
 			utils.WhisperEnabledFlag,
 			utils.NatspecEnabledFlag,
+			utils.IPCExperimental,
 		},
 	},
 	{

cmd/gethrpctest/main.go

@@ -23,15 +23,22 @@ import (
 	"log"
 	"os"
 	"os/signal"
+	"path/filepath"
+	"runtime"
 
 	"github.com/ethereum/go-ethereum/accounts"
+	"github.com/ethereum/go-ethereum/cmd/utils"
+	"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/rpc/api"
 	"github.com/ethereum/go-ethereum/rpc/codec"
 	"github.com/ethereum/go-ethereum/rpc/comms"
+	rpc "github.com/ethereum/go-ethereum/rpc/v2"
 	"github.com/ethereum/go-ethereum/tests"
 	"github.com/ethereum/go-ethereum/whisper"
 	"github.com/ethereum/go-ethereum/xeth"
@@ -81,9 +88,14 @@ func main() {
 	}
 	log.Println("Initial test suite passed...")
 
+	if err := StartIPC(stack); err != nil {
+		log.Fatalf("Failed to start IPC interface: %v\n", err)
+	}
+	log.Println("IPC Interface started, accepting requests...")
+
 	// Start the RPC interface and wait until terminated
 	if err := StartRPC(stack); err != nil {
-		log.Fatalf("Failed to start RPC instarface: %v", err)
+		log.Fatalf("Failed to start RPC interface: %v", err)
 	}
 	log.Println("RPC Interface started, accepting requests...")
 
@@ -177,3 +189,54 @@ func StartRPC(stack *node.Node) error {
 	}
 	return comms.StartHttp(config, codec, api.Merge(apis...))
 }
+
+// StartRPC initializes an IPC interface to the given protocol stack.
+func StartIPC(stack *node.Node) error {
+	var ethereum *eth.Ethereum
+	if err := stack.Service(&ethereum); err != nil {
+		return err
+	}
+
+	endpoint := `\\.\pipe\geth.ipc`
+	if runtime.GOOS != "windows" {
+		endpoint = filepath.Join(common.DefaultDataDir(), "geth.ipc")
+	}
+
+	config := comms.IpcConfig{
+		Endpoint: endpoint,
+	}
+
+	listener, err := comms.CreateListener(config)
+	if err != nil {
+		return err
+	}
+
+	server := rpc.NewServer()
+
+	// register package API's this node provides
+	offered := stack.RPCAPIs()
+	for _, api := range offered {
+		server.RegisterName(api.Namespace, api.Service)
+		glog.V(logger.Debug).Infof("Register %T@%s for IPC service\n", api.Service, api.Namespace)
+	}
+
+	web3 := utils.NewPublicWeb3API(stack)
+	server.RegisterName("web3", web3)
+	net := utils.NewPublicNetAPI(stack.Server(), ethereum.NetVersion())
+	server.RegisterName("net", net)
+
+	go func() {
+		glog.V(logger.Info).Infof("Start IPC server on %s\n", config.Endpoint)
+		for {
+			conn, err := listener.Accept()
+			if err != nil {
+				glog.V(logger.Error).Infof("Unable to accept connection - %v\n", err)
+			}
+
+			codec := rpc.NewJSONCodec(conn)
+			go server.ServeCodec(codec)
+		}
+	}()
+
+	return nil
+}

cmd/utils/api.go

@@ -0,0 +1,74 @@
+// Copyright 2015 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 utils
+
+import (
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p"
+	rpc "github.com/ethereum/go-ethereum/rpc/v2"
+)
+
+// PublicWeb3API offers helper utils
+type PublicWeb3API struct {
+	stack *node.Node
+}
+
+// NewPublicWeb3API creates a new Web3Service instance
+func NewPublicWeb3API(stack *node.Node) *PublicWeb3API {
+	return &PublicWeb3API{stack}
+}
+
+// ClientVersion returns the node name
+func (s *PublicWeb3API) ClientVersion() string {
+	return s.stack.Server().Name
+}
+
+// Sha3 applies the ethereum sha3 implementation on the input.
+// It assumes the input is hex encoded.
+func (s *PublicWeb3API) Sha3(input string) string {
+	return common.ToHex(crypto.Sha3(common.FromHex(input)))
+}
+
+// PublicNetAPI offers network related RPC methods
+type PublicNetAPI struct {
+	net            *p2p.Server
+	networkVersion int
+}
+
+// NewPublicNetAPI creates a new net api instance.
+func NewPublicNetAPI(net *p2p.Server, networkVersion int) *PublicNetAPI {
+	return &PublicNetAPI{net, networkVersion}
+}
+
+// Listening returns an indication if the node is listening for network connections.
+func (s *PublicNetAPI) Listening() bool {
+	return true // always listening
+}
+
+// Peercount returns the number of connected peers
+func (s *PublicNetAPI) PeerCount() *rpc.HexNumber {
+	return rpc.NewHexNumber(s.net.PeerCount())
+}
+
+// ProtocolVersion returns the current ethereum protocol version.
+func (s *PublicNetAPI) Version() string {
+	return fmt.Sprintf("%d", s.networkVersion)
+}

cmd/utils/flags.go

@@ -54,6 +54,7 @@ import (
 	"github.com/ethereum/go-ethereum/rpc/comms"
 	"github.com/ethereum/go-ethereum/rpc/shared"
 	"github.com/ethereum/go-ethereum/rpc/useragent"
+	rpc "github.com/ethereum/go-ethereum/rpc/v2"
 	"github.com/ethereum/go-ethereum/whisper"
 	"github.com/ethereum/go-ethereum/xeth"
 )
@@ -300,6 +301,10 @@ var (
 		Usage: "Filename for IPC socket/pipe",
 		Value: DirectoryString{common.DefaultIpcPath()},
 	}
+	IPCExperimental = cli.BoolFlag{
+		Name:  "ipcexp",
+		Usage: "Enable the new RPC implementation",
+	}
 	ExecFlag = cli.StringFlag{
 		Name:  "exec",
 		Usage: "Execute JavaScript statement (only in combination with console/attach)",
@@ -690,6 +695,7 @@ func MakeSystemNode(name, version string, extra []byte, ctx *cli.Context) *node.
 			Fatalf("Failed to register the Whisper service: %v", err)
 		}
 	}
+
 	return stack
 }
 
@@ -773,17 +779,53 @@ func IpcSocketPath(ctx *cli.Context) (ipcpath string) {
 	return
 }
 
-// StartIPC starts a IPC JSON-RPC API server.
 func StartIPC(stack *node.Node, ctx *cli.Context) error {
 	config := comms.IpcConfig{
 		Endpoint: IpcSocketPath(ctx),
 	}
 
-	initializer := func(conn net.Conn) (comms.Stopper, shared.EthereumApi, error) {
-		var ethereum *eth.Ethereum
-		if err := stack.Service(&ethereum); err != nil {
-			return nil, nil, err
+	var ethereum *eth.Ethereum
+	if err := stack.Service(&ethereum); err != nil {
+		return err
+	}
+
+	if ctx.GlobalIsSet(IPCExperimental.Name) {
+		listener, err := comms.CreateListener(config)
+		if err != nil {
+			return err
 		}
+
+		server := rpc.NewServer()
+
+		// register package API's this node provides
+		offered := stack.RPCAPIs()
+		for _, api := range offered {
+			server.RegisterName(api.Namespace, api.Service)
+			glog.V(logger.Debug).Infof("Register %T under namespace '%s' for IPC service\n", api.Service, api.Namespace)
+		}
+
+		web3 := NewPublicWeb3API(stack)
+		server.RegisterName("web3", web3)
+		net := NewPublicNetAPI(stack.Server(), ethereum.NetVersion())
+		server.RegisterName("net", net)
+
+		go func() {
+			glog.V(logger.Info).Infof("Start IPC server on %s\n", config.Endpoint)
+			for {
+				conn, err := listener.Accept()
+				if err != nil {
+					glog.V(logger.Error).Infof("Unable to accept connection - %v\n", err)
+				}
+
+				codec := rpc.NewJSONCodec(conn)
+				go server.ServeCodec(codec)
+			}
+		}()
+
+		return nil
+	}
+
+	initializer := func(conn net.Conn) (comms.Stopper, shared.EthereumApi, error) {
 		fe := useragent.NewRemoteFrontend(conn, ethereum.AccountManager())
 		xeth := xeth.New(stack, fe)
 		apis, err := api.ParseApiString(ctx.GlobalString(IPCApiFlag.Name), codec.JSON, xeth, stack)