// the device point gateway start listen
func (this *DeviceGatewayServer) Start(host string) error {
common.Assert((this.connManager != nil) && (this.devManager != nil), "check param nil")
addr, err := net.ResolveTCPAddr("tcp4", host)
if err != nil {
log.Errorf("resolve tcp addr error:err[%v]", err)
return err
}
ln, err := net.ListenTCP("tcp", addr)
if err != nil {
log.Errorf("listen error:err[%v]", err)
return err
}
var waitGroup sync.WaitGroup
for {
socket, err := ln.AcceptTCP()
if err != nil {
log.Errorf("accept error:err[%v]", err)
continue
}
log.Infof("device connect start:addr[%s]", socket.RemoteAddr())
waitGroup.Add(1)
go this.deviceRoutine(&waitGroup, socket, QueueLen)
}
waitGroup.Wait()
return err
}
func loop() {
body := make([]byte, 1024)
// TODO using http client request the device
var request, response common.Message
for i := 0; i < 3600*1000; i++ {
request.Header.PayloadLen = uint16(rand.Intn(30) + 1)
request.Header.Version = 123
request.Header.MsgCode = common.ZC_CODE_ZDESCRIBE
request.Header.MsgId = uint8(i + 101)
var j uint16
for j = 0; j < request.Header.PayloadLen; j++ {
body[j] = byte(j + 1)
}
old := time.Now().UTC()
request.Payload = body[:request.Header.PayloadLen]
fmt.Println("Write Request:", request.Header, body[:request.Header.PayloadLen])
// check the message
if response.Header.MsgCode != common.ZC_CODE_ERR {
fmt.Println("Read Response:", response.Header, body[:response.Header.PayloadLen])
for j = 0; j < response.Header.PayloadLen; j++ {
common.Assert(response.Payload[j] == body[j], "check the response failed")
}
fmt.Println("request timeused:", request.Header.MsgId, old, time.Now().UTC())
} else {
fmt.Println("Send Request to Device Failed")
}
time.Sleep(time.Millisecond * 50)
}
}
// async send request to device and wait the response on result
func (this *Connection) SendRequest(packet *common.Message, result *chan common.Message) (err error) {
common.Assert(packet != nil && result != nil, "check input param failed")
oldId := packet.Header.MsgId
log.Infof("receive new Request from app:msgId[%d]", oldId)
request := NewDeviceCtrlRequest(oldId, result)
// rewrite the msg id as the connection new id
packet.Header.MsgId = this.getNewRequestId()
err = this.requestMap.Insert(packet.Header.MsgId, request)
if err != nil {
log.Warningf("check request insert failed:old[%d], new[%d]", oldId, packet.Header.MsgId)
return err
}
log.Infof("insert the request mapping succ:mid[%d], code[%d], dest[%v], gid[%s]",
packet.Header.MsgId, packet.Header.MsgCode, this.socket.RemoteAddr(), this.gid.String())
// if the dev connection closed panic will occured
defer func() {
packet.Header.MsgId = oldId
info := recover()
if info != nil {
log.Warningf("the request queue is closed:err[%v]", info)
err = common.ErrDeviceConnClosed
}
}()
this.requestQueue <- *packet
return nil
}
func NewDeviceGatewayServer(conn *common.SafeMap, dev *DevicePKManager) *DeviceGatewayServer {
common.Assert((conn != nil) && (dev != nil), "check param nil")
return &DeviceGatewayServer{connManager: conn, devManager: dev}
}
