115 lines
2.9 KiB
Go
115 lines
2.9 KiB
Go
/*
|
|
This file is part of go-ethereum
|
|
|
|
go-ethereum is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
go-ethereum 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
package rpchttp
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
"net/http"
|
|
|
|
"github.com/ethereum/go-ethereum/logger"
|
|
"github.com/ethereum/go-ethereum/rpc"
|
|
"github.com/ethereum/go-ethereum/xeth"
|
|
)
|
|
|
|
var rpchttplogger = logger.NewLogger("RPC-HTTP")
|
|
var JSON rpc.JsonWrapper
|
|
|
|
func NewRpcHttpServer(pipe *xeth.XEth, port int) (*RpcHttpServer, error) {
|
|
sport := fmt.Sprintf("127.0.0.1:%d", port)
|
|
l, err := net.Listen("tcp", sport)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &RpcHttpServer{
|
|
listener: l,
|
|
quit: make(chan bool),
|
|
pipe: pipe,
|
|
port: port,
|
|
}, nil
|
|
}
|
|
|
|
type RpcHttpServer struct {
|
|
quit chan bool
|
|
listener net.Listener
|
|
pipe *xeth.XEth
|
|
port int
|
|
}
|
|
|
|
func (s *RpcHttpServer) exitHandler() {
|
|
out:
|
|
for {
|
|
select {
|
|
case <-s.quit:
|
|
s.listener.Close()
|
|
break out
|
|
}
|
|
}
|
|
|
|
rpchttplogger.Infoln("Shutdown RPC-HTTP server")
|
|
}
|
|
|
|
func (s *RpcHttpServer) Stop() {
|
|
close(s.quit)
|
|
}
|
|
|
|
func (s *RpcHttpServer) Start() {
|
|
rpchttplogger.Infof("Starting RPC-HTTP server on port %d", s.port)
|
|
go s.exitHandler()
|
|
|
|
api := rpc.NewEthereumApi(s.pipe)
|
|
h := s.apiHandler(api)
|
|
http.Handle("/", h)
|
|
|
|
err := http.Serve(s.listener, nil)
|
|
// FIX Complains on shutdown due to listner already being closed
|
|
if err != nil {
|
|
rpchttplogger.Errorln("Error on RPC-HTTP interface:", err)
|
|
}
|
|
}
|
|
|
|
func (s *RpcHttpServer) apiHandler(api *rpc.EthereumApi) http.Handler {
|
|
var jsonrpcver string = "2.0"
|
|
fn := func(w http.ResponseWriter, req *http.Request) {
|
|
w.Header().Set("Access-Control-Allow-Origin", "*")
|
|
|
|
rpchttplogger.DebugDetailln("Handling request")
|
|
|
|
reqParsed, reqerr := JSON.ParseRequestBody(req)
|
|
if reqerr != nil {
|
|
jsonerr := &rpc.RpcErrorObject{-32700, "Error: Could not parse request"}
|
|
JSON.Send(w, &rpc.RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
|
|
return
|
|
}
|
|
|
|
var response interface{}
|
|
reserr := api.GetRequestReply(&reqParsed, &response)
|
|
if reserr != nil {
|
|
rpchttplogger.Warnln(reserr)
|
|
jsonerr := &rpc.RpcErrorObject{-32603, reserr.Error()}
|
|
JSON.Send(w, &rpc.RpcErrorResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Error: jsonerr})
|
|
return
|
|
}
|
|
|
|
rpchttplogger.DebugDetailf("Generated response: %T %s", response, response)
|
|
JSON.Send(w, &rpc.RpcSuccessResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Result: response})
|
|
}
|
|
|
|
return http.HandlerFunc(fn)
|
|
}
|