Move HTTP transport to sub package of RPC

1 files changed, 107 insertions, 0 deletions

diff --git a/rpc/http/server.go b/rpc/http/server.go
new file mode 100644
index 000000000..a8b116076
--- /dev/null
+++ b/rpc/http/server.go
@@ -0,0 +1,107 @@
+/*
+	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.JSXEth, port int) (*RpcHttpServer, error) {
+	sport := fmt.Sprintf(":%d", port)
+	l, err := net.Listen("tcp", sport)
+	if err != nil {
+		return nil, err
+	}
+
+	return &RpcHttpServer{
+		listener: l,
+		quit:     make(chan bool),
+		pipe:     pipe,
+	}, nil
+}
+
+type RpcHttpServer struct {
+	quit     chan bool
+	listener net.Listener
+	pipe     *xeth.JSXEth
+}
+
+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.Infoln("Starting RPC-HTTP server")
+	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(xeth *rpc.EthereumApi) http.Handler {
+	fn := func(w http.ResponseWriter, req *http.Request) {
+		rpchttplogger.Debugln("Handling request")
+
+		reqParsed, reqerr := JSON.ParseRequestBody(req)
+		if reqerr != nil {
+			JSON.Send(w, &rpc.RpcErrorResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: true, ErrorText: rpc.ErrorParseRequest})
+			return
+		}
+
+		var response interface{}
+		reserr := xeth.GetRequestReply(&reqParsed, &response)
+		if reserr != nil {
+			rpchttplogger.Errorln(reserr)
+			JSON.Send(w, &rpc.RpcErrorResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: true, ErrorText: reserr.Error()})
+			return
+		}
+
+		rpchttplogger.Debugf("Generated response: %T %s", response, response)
+		JSON.Send(w, &rpc.RpcSuccessResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: false, Result: response})
+	}
+
+	return http.HandlerFunc(fn)
+}