mirror of https://github.com/ethereum/go-ethereum
obscuren
10 years ago
commit
45e15f62f5
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/* |
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This file is part of go-ethereum |
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go-ethereum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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go-ethereum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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package ws |
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import ( |
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"fmt" |
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"net" |
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"net/http" |
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"code.google.com/p/go.net/websocket" |
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"github.com/ethereum/go-ethereum/eth" |
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"github.com/ethereum/go-ethereum/event/filter" |
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"github.com/ethereum/go-ethereum/logger" |
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"github.com/ethereum/go-ethereum/rpc" |
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"github.com/ethereum/go-ethereum/xeth" |
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) |
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var wslogger = logger.NewLogger("RPC-WS") |
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type WebSocketServer struct { |
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eth *eth.Ethereum |
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filterManager *filter.FilterManager |
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port int |
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doneCh chan bool |
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listener net.Listener |
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} |
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func NewWebSocketServer(eth *eth.Ethereum, port int) (*WebSocketServer, error) { |
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sport := fmt.Sprintf(":%d", port) |
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l, err := net.Listen("tcp", sport) |
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if err != nil { |
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return nil, err |
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} |
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filterManager := filter.NewFilterManager(eth.EventMux()) |
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go filterManager.Start() |
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return &WebSocketServer{eth, |
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filterManager, |
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port, |
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make(chan bool), |
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l, |
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}, nil |
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} |
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func (self *WebSocketServer) handlerLoop() { |
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for { |
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select { |
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case <-self.doneCh: |
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wslogger.Infoln("Shutdown RPC-WS server") |
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return |
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} |
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} |
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} |
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func (self *WebSocketServer) Stop() { |
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close(self.doneCh) |
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} |
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func (self *WebSocketServer) Start() { |
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wslogger.Infof("Starting RPC-WS server on port %d", self.port) |
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go self.handlerLoop() |
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api := rpc.NewEthereumApi(xeth.NewJSXEth(self.eth)) |
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h := self.apiHandler(api) |
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http.Handle("/ws", h) |
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err := http.Serve(self.listener, nil) |
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if err != nil { |
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wslogger.Errorln("Error on RPC-WS interface:", err) |
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} |
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} |
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func (s *WebSocketServer) apiHandler(api *rpc.EthereumApi) http.Handler { |
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fn := func(w http.ResponseWriter, req *http.Request) { |
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h := sockHandler(api) |
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s := websocket.Server{Handler: h} |
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s.ServeHTTP(w, req) |
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} |
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return http.HandlerFunc(fn) |
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} |
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func sockHandler(api *rpc.EthereumApi) websocket.Handler { |
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fn := func(conn *websocket.Conn) { |
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for { |
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wslogger.Debugln("Handling request") |
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var reqParsed rpc.RpcRequest |
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if err := websocket.JSON.Receive(conn, &reqParsed); err != nil { |
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wslogger.Debugln(rpc.ErrorParseRequest) |
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websocket.JSON.Send(conn, rpc.RpcErrorResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: true, ErrorText: rpc.ErrorParseRequest}) |
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continue |
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} |
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var response interface{} |
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reserr := api.GetRequestReply(&reqParsed, &response) |
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if reserr != nil { |
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wslogger.Errorln(reserr) |
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websocket.JSON.Send(conn, rpc.RpcErrorResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: true, ErrorText: reserr.Error()}) |
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continue |
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} |
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wslogger.Debugf("Generated response: %T %s", response, response) |
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websocket.JSON.Send(conn, rpc.RpcSuccessResponse{JsonRpc: reqParsed.JsonRpc, ID: reqParsed.ID, Error: false, Result: response}) |
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} |
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} |
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return websocket.Handler(fn) |
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} |
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