/
rpc.go
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/
rpc.go
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package ethrpc
import (
"errors"
"fmt"
"net"
"net/http"
"strings"
"sync"
"github.com/33cn/chain33/client"
"github.com/33cn/chain33/common/log/log15"
"github.com/33cn/chain33/common/utils"
"github.com/33cn/chain33/queue"
"github.com/33cn/chain33/rpc/ethrpc/admin"
"github.com/33cn/chain33/rpc/ethrpc/eth"
rpcNet "github.com/33cn/chain33/rpc/ethrpc/net"
"github.com/33cn/chain33/rpc/ethrpc/personal"
"github.com/33cn/chain33/rpc/ethrpc/web3"
ctypes "github.com/33cn/chain33/types"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/rpc"
)
const (
ethNameSpace = "eth"
netNameSpace = "net"
personalNameSpace = "personal"
adminNameSpace = "admin"
web3NameSpace = "web3"
subRpctype = "eth"
defaultEthRPCPort = 8545
defaultEthWsRPCPort = 8546
)
type initAPI func(cfg *ctypes.Chain33Config, c queue.Client, api client.QueueProtocolAPI) interface{}
type rpcAPIs map[string]initAPI
var (
log = log15.New("module", "eth_rpc")
// default apis
defaultApis = map[string]initAPI{
ethNameSpace: eth.NewEthAPI,
netNameSpace: rpcNet.NewNetAPI,
personalNameSpace: personal.NewPersonalAPI,
adminNameSpace: admin.NewAdminAPI,
web3NameSpace: web3.NewWeb3API,
}
)
type subConfig struct {
//ethereum json rpc bindaddr
Enable bool `json:"enable,omitempty"`
EnableRlpTxHash bool `json:"enableRlpTxHash,omitempty"`
HTTPAddr string `json:"httpAddr,omitempty"`
HTTPAPI []string `json:"httpApi,omitempty"` //eth,admin,net,web3/personal
WsAddr string `json:"wsAddr,omitempty"`
WsAPI []string `json:"wsApi,omitempty"` //eth,admin,net,web3/personal
Web3CliVer string `json:"web3CliVer,omitempty"`
}
// ServerAPI ...
type ServerAPI interface {
EnableRPC()
EnableWS()
Start() (int, error)
Close()
}
type httpServer struct {
mu sync.Mutex
endpoint string
timeouts rpc.HTTPTimeouts
server *http.Server
listener net.Listener // non-nil when server is running
httpHandler *rpcHandler //http
wsHander *rpcHandler //websocket
cfg *ctypes.Chain33Config
subCfg *subConfig
qclient queue.Client
api client.QueueProtocolAPI
}
// isWebsocket checks the header of an http request for a websocket upgrade request.
func isWebsocket(r *http.Request) bool {
return strings.ToLower(r.Header.Get("Upgrade")) == "websocket" &&
strings.Contains(strings.ToLower(r.Header.Get("Connection")), "upgrade")
}
type rpcHandler struct {
http.Handler
server *rpc.Server
}
// initRpcHandler 注册eth rpc
func initRPCHandler(apis rpcAPIs, cfg *ctypes.Chain33Config, c queue.Client, api client.QueueProtocolAPI) *rpcHandler {
server := rpc.NewServer()
if len(apis) == 0 {
apis = defaultApis
}
for namespace, newAPI := range apis {
server.RegisterName(namespace, newAPI(cfg, c, api))
}
return &rpcHandler{
server: server,
}
}
// NewHTTPServer eth json rpcserver object
func NewHTTPServer(c queue.Client, api client.QueueProtocolAPI) ServerAPI {
var subcfg subConfig
ctypes.MustDecode(c.GetConfig().GetSubConfig().RPC[subRpctype], &subcfg)
log.Debug("NewHttpServer", "subcfg", subcfg)
return &httpServer{
timeouts: rpc.DefaultHTTPTimeouts,
cfg: c.GetConfig(),
subCfg: &subcfg,
qclient: c,
api: api,
}
}
// set listen addr
func (h *httpServer) setEndPoint(listenAddr string) {
h.mu.Lock()
defer h.mu.Unlock()
h.endpoint = listenAddr
}
// EnableRpc register http rpc
func (h *httpServer) EnableRPC() {
var apis = make(rpcAPIs)
for _, namespace := range h.subCfg.HTTPAPI {
if api, ok := defaultApis[namespace]; ok {
apis[namespace] = api
}
}
rpcHandler := initRPCHandler(apis, h.cfg, h.qclient, h.api)
rpcHandler.Handler = node.NewHTTPHandlerStack(rpcHandler.server, []string{"*"}, []string{"*"}, nil)
h.httpHandler = rpcHandler
if h.subCfg.HTTPAddr == "" {
h.subCfg.HTTPAddr = fmt.Sprintf("localhost:%d", defaultEthRPCPort)
}
h.setEndPoint(h.subCfg.HTTPAddr)
log.Debug("EnableRpc", "httpaddr", h.endpoint)
}
// EnableWS register websocket rpc
func (h *httpServer) EnableWS() {
var apis = make(rpcAPIs)
for _, namespace := range h.subCfg.WsAPI {
if api, ok := defaultApis[namespace]; ok {
apis[namespace] = api
}
}
rpcHandler := initRPCHandler(apis, h.cfg, h.qclient, h.api)
rpcHandler.Handler = rpcHandler.server.WebsocketHandler([]string{"*"})
h.wsHander = rpcHandler
if h.subCfg.WsAddr == "" {
h.subCfg.WsAddr = fmt.Sprintf("localhost:%d", defaultEthWsRPCPort)
}
h.setEndPoint(h.subCfg.WsAddr)
log.Debug("EnableWS", "websocketaddr", h.endpoint)
}
// Start server start
func (h *httpServer) Start() (int, error) {
h.mu.Lock()
defer h.mu.Unlock()
if !h.subCfg.Enable {
return 0, errors.New("rpc disable")
}
h.server = &http.Server{
Handler: h,
}
h.server.ReadTimeout = h.timeouts.ReadTimeout
h.server.WriteTimeout = h.timeouts.WriteTimeout
h.server.IdleTimeout = h.timeouts.IdleTimeout
l, err := net.Listen("tcp", h.endpoint)
if err != nil {
panic(err)
}
h.listener = l
if !h.cfg.GetModuleConfig().RPC.EnableTLS {
go h.server.Serve(h.listener)
} else {
go h.server.ServeTLS(h.listener, h.cfg.GetModuleConfig().RPC.CertFile, h.cfg.GetModuleConfig().RPC.KeyFile)
}
if h.wsHander != nil {
log.Info("WebSocket enabled", "url:", fmt.Sprintf("ws://%v", h.endpoint))
} else {
log.Info("http enabled", "url:", fmt.Sprintf("http://%v", h.endpoint))
}
return h.listener.Addr().(*net.TCPAddr).Port, nil
}
// Close close service
func (h *httpServer) Close() {
if h.wsHander != nil {
h.wsHander.server.Stop()
} else if h.wsHander != nil {
h.wsHander.server.Stop()
}
}
// ServeHTTP rewrite ServeHTTP
func (h *httpServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if r.Method == "OPTION" {
w.WriteHeader(http.StatusNoContent)
return
}
ip, _, _ := net.SplitHostPort(r.RemoteAddr)
if utils.IsPublicIP(ip) {
log.Debug("ServeHTTP", "remote client", r.RemoteAddr)
} else {
log.Debug("ServeHTTP", "remote client", r.RemoteAddr)
}
if h.httpHandler != nil {
h.httpHandler.ServeHTTP(w, r)
return
}
if h.wsHander != nil && isWebsocket(r) {
h.wsHander.ServeHTTP(w, r)
return
}
w.WriteHeader(http.StatusNotFound)
}