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-rw-r--r--rpc/ws/server.go123
1 files changed, 123 insertions, 0 deletions
diff --git a/rpc/ws/server.go b/rpc/ws/server.go
new file mode 100644
index 000000000..248ebc585
--- /dev/null
+++ b/rpc/ws/server.go
@@ -0,0 +1,123 @@
+/*
+ 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 ws
+
+import (
+ "fmt"
+ "net"
+ "net/http"
+
+ "code.google.com/p/go.net/websocket"
+ "github.com/ethereum/go-ethereum/eth"
+ "github.com/ethereum/go-ethereum/event/filter"
+ "github.com/ethereum/go-ethereum/logger"
+ "github.com/ethereum/go-ethereum/rpc"
+ "github.com/ethereum/go-ethereum/xeth"
+)
+
+var wslogger = logger.NewLogger("RPC-WS")
+
+type WebSocketServer struct {
+ eth *eth.Ethereum
+ filterManager *filter.FilterManager
+ port int
+ doneCh chan bool
+ listener net.Listener
+}
+
+func NewWebSocketServer(eth *eth.Ethereum, port int) (*WebSocketServer, error) {
+ sport := fmt.Sprintf(":%d", port)
+ l, err := net.Listen("tcp", sport)
+ if err != nil {
+ return nil, err
+ }
+
+ filterManager := filter.NewFilterManager(eth.EventMux())
+ go filterManager.Start()
+
+ return &WebSocketServer{eth,
+ filterManager,
+ port,
+ make(chan bool),
+ l,
+ }, nil
+}
+
+func (self *WebSocketServer) handlerLoop() {
+ for {
+ select {
+ case <-self.doneCh:
+ wslogger.Infoln("Shutdown RPC-WS server")
+ return
+ }
+ }
+}
+
+func (self *WebSocketServer) Stop() {
+ close(self.doneCh)
+}
+
+func (self *WebSocketServer) Start() {
+ wslogger.Infof("Starting RPC-WS server on port %d", self.port)
+ go self.handlerLoop()
+
+ api := rpc.NewEthereumApi(xeth.NewJSXEth(self.eth))
+ h := self.apiHandler(api)
+ http.Handle("/ws", h)
+
+ err := http.Serve(self.listener, nil)
+ if err != nil {
+ wslogger.Errorln("Error on RPC-WS interface:", err)
+ }
+}
+
+func (s *WebSocketServer) apiHandler(api *rpc.EthereumApi) http.Handler {
+ fn := func(w http.ResponseWriter, req *http.Request) {
+ h := sockHandler(api)
+ s := websocket.Server{Handler: h}
+ s.ServeHTTP(w, req)
+ }
+
+ return http.HandlerFunc(fn)
+}
+
+func sockHandler(api *rpc.EthereumApi) websocket.Handler {
+ fn := func(conn *websocket.Conn) {
+ for {
+ wslogger.Debugln("Handling request")
+ var reqParsed rpc.RpcRequest
+
+ if err := websocket.JSON.Receive(conn, &reqParsed); err != nil {
+ wslogger.Debugln(rpc.ErrorParseRequest)
+ websocket.JSON.Send(conn, rpc.RpcErrorResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: true, ErrorText: rpc.ErrorParseRequest})
+ continue
+ }
+
+ var response interface{}
+ reserr := api.GetRequestReply(&reqParsed, &response)
+ if reserr != nil {
+ wslogger.Errorln(reserr)
+ websocket.JSON.Send(conn, rpc.RpcErrorResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: true, ErrorText: reserr.Error()})
+ continue
+ }
+
+ wslogger.Debugf("Generated response: %T %s", response, response)
+ websocket.JSON.Send(conn, rpc.RpcSuccessResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: false, Result: response})
+ }
+ }
+ return websocket.Handler(fn)
+}