cloud-control-panel/gorilla.go

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// Copyright 2015 The Gorilla WebSocket Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import "log"
import "net/url"
import "time"
import "github.com/gorilla/websocket"
import "github.com/golang/protobuf/proto"
import pb "git.wit.com/wit/witProtobuf"
// import "git.wit.com/wit/gui"
var gorillaConn *websocket.Conn
func gorillaReadProtobuf(conn *websocket.Conn) {
for {
log.Println("gorilla START gorillaReadProtobuf()", time.Now())
mytype, message, err := conn.ReadMessage()
if err != nil {
log.Println("read:", err)
return
}
if (mytype == websocket.BinaryMessage) {
protobufMsg := new(pb.Event)
err = proto.Unmarshal(message, protobufMsg)
if (err != nil) {
log.Printf("readConn() something fucked up happened in Unmarshal")
}
log.Printf("gorillaReadProtobuf() successfully read protobuf from gorilla websocket")
addEvent(protobufMsg)
} else {
log.Printf("recv: %s", message)
// log.Printf("type, err = ", mytype, err)
}
time.Sleep(time.Second)
log.Println("gorilla END gorillaReadProtobuf()", time.Now())
}
}
func gorillaSendProtobuf(msg *pb.Event) {
log.Println("gorillaSendProtobuf() Event_Type =", msg.Type, "Event.Account.Nick =", msg.Account)
if (gorillaConn == nil) {
log.Println("gorillaSendProtobuf() CAN NOT SEND (socket connection isn't open)")
return
}
test, err := proto.Marshal(msg)
if err != nil {
log.Println("gorillaConn.WriteMessage() Marshal failed SERIOUS ERROR", err)
log.Println("gorillaConn.WriteMessage() Marshal failed SERIOUS ERROR", err)
log.Println("gorillaConn.WriteMessage() Marshal failed SERIOUS ERROR", err)
// TODO: return here?
return
}
err2 := gorillaConn.WriteMessage(websocket.BinaryMessage, test)
if err2 != nil {
log.Println("gorillaConn.WriteMessage() failed write:", err2)
gorillaConn = nil
return
}
log.Println("gorillaSendProtobuf() END OK", time.Now())
}
func closeGorillaConn() {
if gorillaConn == nil {
log.Println("gorillaConn already was nil")
return
}
// Cleanly close the connection by sending a close message and then
// waiting (with timeout) for the server to close the connection.
err := gorillaConn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
if err != nil {
log.Println("write close:", err)
return
}
// this must be called or set to be called with defer
gorillaConn.Close()
gorillaConn = nil
log.Println("closeGorillaConn() END OK", time.Now())
}
func gorillaDial(hostname string) {
// var addr = flag.String("addr", "v000185.testing.com.customers.wprod.wit.com:9000", "http service address")
for {
u := url.URL{
Scheme: "ws",
Host: hostname,
Path: "/event",
}
log.Printf("connecting to %s", u.String())
conn, resp, err := websocket.DefaultDialer.Dial(u.String(), nil)
if err != nil {
log.Println("gorillaDial failed", err)
} else {
resp.Header.Set("jcarrname", "jcarrvalue")
gorillaConn = conn
origconn := conn.UnderlyingConn()
laddr := origconn.LocalAddr()
raddr := origconn.RemoteAddr()
log.Println("RESPONSE HEADER origconn.LocalAddr()= ", laddr)
log.Println("RESPONSE HEADER origconn.RemoteAddr()= ", raddr)
// handle inbound messages on the channel
gorillaReadProtobuf(conn)
closeGorillaConn()
}
time.Sleep(time.Second * 5) // try every 5 seconds
}
}