begin conversion to rpc over http

Per specification at
https://github.com/ethereum/wiki/wiki/Generic-JSON-RPC

rpc/server.go

@@ -3,8 +3,7 @@ package rpc
 import (
 	"fmt"
 	"net"
-	"net/rpc"
-	"net/rpc/jsonrpc"
+	"net/http"
 
 	"github.com/ethereum/go-ethereum/logger"
 	"github.com/ethereum/go-ethereum/xeth"
@@ -38,17 +37,14 @@ func (s *JsonRpcServer) Stop() {
 func (s *JsonRpcServer) Start() {
 	jsonlogger.Infoln("Starting JSON-RPC server")
 	go s.exitHandler()
-	rpc.Register(&EthereumApi{pipe: s.pipe})
-	rpc.HandleHTTP()
 
-	for {
-		conn, err := s.listener.Accept()
-		if err != nil {
-			jsonlogger.Infoln("Error starting JSON-RPC:", err)
-			break
-		}
-		jsonlogger.Debugln("Incoming request.")
-		go jsonrpc.ServeConn(conn)
+	h := apiHandler(&EthereumApi{pipe: s.pipe})
+	http.Handle("/", h)
+
+	err := http.Serve(s.listener, nil)
+	// TODO Complains on shutdown due to listner already being closed
+	if err != nil {
+		jsonlogger.Errorln("Error on JSON-RPC interface:", err)
 	}
 }
 
@@ -65,3 +61,28 @@ func NewJsonRpcServer(pipe *xeth.JSXEth, port int) (*JsonRpcServer, error) {
 		pipe:     pipe,
 	}, nil
 }
+
+func apiHandler(xeth *EthereumApi) http.Handler {
+	fn := func(w http.ResponseWriter, req *http.Request) {
+		jsonlogger.Debugln("Handling request")
+
+		reqParsed, reqerr := JSON.ParseRequestBody(req)
+		if reqerr != nil {
+			JSON.Send(w, &RpcErrorResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: true, ErrorText: ErrorParseRequest})
+			return
+		}
+
+		var response interface{}
+		reserr := JSON.GetRequestReply(xeth, &reqParsed, &response)
+		if reserr != nil {
+			jsonlogger.Errorln(reserr)
+			JSON.Send(w, &RpcErrorResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: true, ErrorText: reserr.Error()})
+			return
+		}
+
+		jsonlogger.Debugf("Generated response: %T %s", response, response)
+		JSON.Send(w, &RpcSuccessResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: false, Result: response})
+	}
+
+	return http.HandlerFunc(fn)
+}