func HandlePush(agent *Agent, pkt *packet.Pkt) {
dataMsg := packet.PktDataMessage{}
err := packet.Unpack(pkt, &dataMsg)
if err != nil {
log.Errorf("Error unpack push msg: %s", err.Error())
}
log.Infof("Received push message: MsgId: %d, Type: %d, Appid: %s, Msg: %s\n",
dataMsg.MsgId, dataMsg.MsgType, dataMsg.AppId, dataMsg.Msg)
dataAck := packet.PktDataACK{
MsgId: dataMsg.MsgId,
AppId: dataMsg.AppId,
RegId: agent.RegIds[dataMsg.AppId],
}
pktAck, err := packet.Pack(packet.PKT_ACK, 0, dataAck)
if err != nil {
log.Errorf("Pack error: %s", err.Error())
return
}
agent.SendPkt(pktAck)
if agent.OnReceiveMsg != nil {
agent.OnReceiveMsg(dataMsg.AppId, dataMsg.MsgId, dataMsg.MsgType, dataMsg.Msg)
}
}
func HandleUnregist(client *Client, pkt *packet.Pkt) {
dataUnreg := packet.PktDataUnregist{}
err := packet.Unpack(pkt, &dataUnreg)
if err != nil {
log.Printf("Unpack error: %s", err.Error())
return
}
log.Printf("Received Unregist. AppId: %s, AppKey: %s, RegId: %s",
dataUnreg.AppId, dataUnreg.AppKey, dataUnreg.RegId)
dataUnregResp := packet.PktDataUnregResp{
AppId: dataUnreg.AppId,
RegId: dataUnreg.RegId,
Result: 0,
}
pktUnregResp, err := packet.Pack(packet.PKT_Unregist_Resp, 0, dataUnregResp)
if err != nil {
log.Printf("Pack Unreg_Resp error: %s", err.Error())
return
}
b, err := pktUnregResp.Serialize()
if err != nil {
log.Printf("Serialize error: %s", err.Error())
return
}
client.Conn.Write(b)
}
func HandleRegist(client *Client, pkt *packet.Pkt) {
var dataRegist = packet.PktDataRegist{}
err := packet.Unpack(pkt, &dataRegist)
if err != nil {
log.Printf("Failed to Unpack: %s", err.Error())
}
log.Printf("Device [%s] regist AppID: %s", client.Id, dataRegist.AppId)
dataRegResp := packet.PktDataRegResp{
AppId: dataRegist.AppId,
RegId: dataRegist.AppId + "_XXX",
Result: 0,
}
pktRegResp, err := packet.Pack(packet.PKT_Regist_Resp, 0, &dataRegResp)
if err != nil {
log.Printf("Pack error: %s", err.Error())
return
}
b, err := pktRegResp.Serialize()
if err != nil {
log.Printf("Serialize error: %s", err.Error())
return
}
client.Conn.Write(b)
client.AppIds = append(client.AppIds, dataRegist.AppId)
SendOfflineMsg(client, dataRegist.AppId)
}
func (this *Client) SendMsg(msg string, appid string) error {
pktDataMsg := packet.PktDataMessage{
Msg: msg,
AppId: appid,
}
pkt, err := packet.Pack(packet.PKT_Push, 0, &pktDataMsg)
if err != nil {
return err
}
this.PktChan <- pkt
return nil
}
func (this *Agent) Unregist(appid string, appkey string, regid string, token string) {
log.Infof("Unregist AppId: %s, AppKey: %s, RegId: %s", appid, appkey, regid)
dataUnregist := packet.PktDataUnregist{
AppId: appid,
AppKey: appkey,
RegId: regid,
Token: token,
}
pktUnregist, err := packet.Pack(packet.PKT_Unregist, 0, dataUnregist)
if err != nil {
log.Errorf("Pack error: %s", err.Error())
return
}
this.SendPkt(pktUnregist)
}
func (this *Agent) Run() {
this.LoadRegIds()
conn, err := net.DialTCP("tcp", nil, this.serverAddr)
if err != nil {
log.Errorf("Dial %v error: %s", this.serverAddr, err.Error())
log.Flush()
os.Exit(1)
return
}
defer func() {
conn.Close()
}()
dataInit := packet.PktDataInit{
DevId: this.deviceId,
}
initPkt, err := packet.Pack(packet.PKT_Init, 0, dataInit)
if err != nil {
log.Error("Pack error: %s", err.Error())
return
}
b, err := initPkt.Serialize()
if err != nil {
log.Error("Serialize error: %s", err.Error())
}
log.Debug(string(initPkt.Data))
conn.Write(b)
go func() {
timer := time.NewTicker(20 * time.Second)
hbPkt, _ := packet.Pack(packet.PKT_Heartbeat, 0, nil)
heartbeat, _ := hbPkt.Serialize()
for {
select {
//case <- done:
// break
case pkt := <-this.outPkt:
b, err := pkt.Serialize()
if err != nil {
log.Errorf("Serialize error: %s", err.Error())
}
log.Debugf("Write data: %s\n", b)
conn.Write(b)
case <-timer.C:
conn.Write(heartbeat)
}
}
}()
var bufHeader = make([]byte, packet.PKT_HEADER_SIZE)
for {
//// check if we are exiting
//select {
//case <-this.exitChan:
// log.Printf("Closing connection from %s.\n", conn.RemoteAddr().String())
// return
//default:
// // continue read
//}
const readTimeout = 300 * time.Second
conn.SetReadDeadline(time.Now().Add(readTimeout))
// read the packet header
nbytes, err := io.ReadFull(conn, bufHeader)
if err != nil {
if err == io.EOF {
log.Warn("read EOF, closing connection")
return
} else if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
// just read timeout, not an error
continue
}
log.Errorf("read error: %s\n", err.Error())
return
}
log.Debugf("%d bytes packet header read\n", nbytes)
var pkt = packet.Pkt{
Data: nil,
}
pkt.Header.Deserialize(bufHeader)
// read the packet data
if pkt.Header.Len > 0 {
log.Debugf("expecting data size: %d\n", pkt.Header.Len)
var bufData = make([]byte, pkt.Header.Len)
nbytes, err := io.ReadFull(conn, bufData)
if err != nil {
if err == io.EOF {
log.Warn("read EOF, closing connection")
return
} else if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
// read timeout
//TODO: exit?
log.Errorf("Timeout on receiving packet data. error: %s\n", err.Error())
continue
}
log.Errorf("Error on receiving packet data. error: %s\n", err.Error())
return
}
log.Debugf("%d bytes packet data read: %s\n", nbytes, bufData)
pkt.Data = bufData
}
this.handlePacket(&pkt)
}
}
func HandleInit(conn *net.TCPConn, pkt *packet.Pkt) *Client {
log.Printf("Handling packet type: Regist")
var dataInit = packet.PktDataInit{}
err := packet.Unpack(pkt, &dataInit)
if err != nil {
log.Printf("Failed to Unpack: %s", err.Error())
return nil
}
// TODO: check if the Id already exist
client := Client{
Conn: conn,
Id: dataInit.DevId,
PktChan: make(chan *packet.Pkt),
LastHeartbeat: time.Now(),
}
log.Printf("New Device is online, Id: %s", client.Id)
go func() {
for {
select {
case pkt := <-client.PktChan:
log.Printf("pkt to send")
b, err := pkt.Serialize()
if err != nil {
log.Printf("Error on serializing pkt: %s", err.Error())
continue
}
var n int
n, err = conn.Write(b)
if err != nil {
log.Printf("Error on sending pkt: %s", err.Error())
continue
}
log.Printf("Write successfully: %d", n)
}
}
}()
// send Response for the Init packet
dataInitResp := packet.PktDataInitResp{
Result: 0,
}
initRespPkt, err := packet.Pack(packet.PKT_Init_Resp, 0, &dataInitResp)
if err != nil {
log.Printf("Pack error: %s", err.Error())
return nil
}
b, err := initRespPkt.Serialize()
if err != nil {
log.Printf("Serialize error: %s", err.Error())
return nil
}
conn.Write(b)
ClientMapLock.Lock()
ClientMap[client.Id] = &client
ClientMapLock.Unlock()
return &client
}