mirror of https://github.com/ethereum/go-ethereum
obscuren
10 years ago
commit
b46e1ca97e
@ -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) |
||||
} |
||||
Loading…
Reference in new issue