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sio.go
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sio.go
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/**
* Copyright (c) 2014-2015, GoBelieve
* All rights reserved.
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package main
import (
log "github.com/golang/glog"
"github.com/googollee/go-engine.io"
"io/ioutil"
"net/http"
"bytes"
)
type SIOServer struct {
server *engineio.Server
}
func (s *SIOServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
log.Info(req.Header.Get("Origin"))
if req.Header.Get("Origin") != "" {
w.Header().Set("Access-Control-Allow-Origin", req.Header.Get("Origin"))
w.Header().Set("Access-Control-Allow-Credentials", "true")
w.Header().Set("Access-Control-Allow-Headers", `Origin, No-Cache, X-Requested-With, If-Modified-Since, Pragma,
Last-Modified, Cache-Control, Expires, Content-Type`)
w.Header().Set("Access-Control-Allow-Methods", "GET, POST, OPTIONS")
} else {
w.Header().Set("Access-Control-Allow-Origin", "*")
}
s.server.ServeHTTP(w, req)
}
func StartSocketIO(socket_io_address string) {
server, err := engineio.NewServer(nil)
if err != nil {
log.Fatal(err)
}
go func() {
for {
conn, err := server.Accept()
if err != nil {
log.Info("accept connect fail")
}
handlerEngineIOClient(conn)
}
}()
mux := http.NewServeMux()
mux.Handle("/engine.io/", &SIOServer{server})
log.Infof("EngineIO Serving at %s...", socket_io_address)
HTTPService(socket_io_address, mux)
}
func handlerEngineIOClient(conn engineio.Conn) {
client := NewClient(conn)
client.Run()
}
func SendEngineIOBinaryMessage(conn engineio.Conn, msg *Message) {
w, err := conn.NextWriter(engineio.MessageBinary)
if err != nil {
log.Info("get next writer fail")
return
}
log.Info("message version:", msg.version)
err = SendMessage(w, msg)
if err != nil {
log.Info("engine io write error")
return
}
w.Close()
}
func ReadEngineIOMessage(conn engineio.Conn) *Message {
t, r, err := conn.NextReader()
if err != nil {
return nil
}
b, err := ioutil.ReadAll(r)
if err != nil {
return nil
}
r.Close()
if t == engineio.MessageText {
return nil
} else {
return ReadBinaryMesage(b)
}
}
func ReadBinaryMesage(b []byte) *Message {
reader := bytes.NewReader(b)
return ReceiveMessage(reader)
}