You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
package core
|
|
|
|
import (
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"git.noahlan.cn/northlan/nnet/internal/log"
|
|
"git.noahlan.cn/northlan/nnet/internal/packet"
|
|
"time"
|
|
)
|
|
|
|
var (
|
|
hrd []byte // handshake response data
|
|
hbd []byte // heartbeat packet data
|
|
)
|
|
|
|
type NNetProcessor struct {
|
|
}
|
|
|
|
func NewNNetProcessor() *NNetProcessor {
|
|
// TODO custom hrd hbd
|
|
data, _ := json.Marshal(map[string]interface{}{
|
|
"code": 200,
|
|
"sys": map[string]float64{"heartbeat": time.Second.Seconds()},
|
|
})
|
|
packer := packet.NewNNetPacker()
|
|
hrd, _ = packer.Pack(packet.Handshake, data)
|
|
|
|
return &NNetProcessor{}
|
|
}
|
|
|
|
func (n *NNetProcessor) Process(conn *Connection, p packet.IPacket) error {
|
|
h, ok := p.(*packet.Packet)
|
|
if !ok {
|
|
return packet.ErrWrongPacketType
|
|
}
|
|
|
|
switch h.PacketType {
|
|
case packet.Handshake:
|
|
// TODO validate handshake
|
|
if err := conn.SendBytes(hrd); err != nil {
|
|
return err
|
|
}
|
|
|
|
conn.SetStatus(StatusPrepare)
|
|
log.Debugf("connection handshake Id=%d, Remote=%s", conn.ID(), conn.Conn().RemoteAddr())
|
|
case packet.HandshakeAck:
|
|
conn.SetStatus(StatusPending)
|
|
log.Debugf("receive handshake ACK Id=%d, Remote=%s", conn.ID(), conn.Conn().RemoteAddr())
|
|
case packet.Heartbeat:
|
|
// Expected
|
|
case packet.Data:
|
|
if conn.Status() < StatusPending {
|
|
return errors.New(fmt.Sprintf("receive data on socket which not yet ACK, session will be closed immediately, remote=%s",
|
|
conn.Conn().RemoteAddr()))
|
|
}
|
|
conn.SetStatus(StatusWorking)
|
|
|
|
var lastMid uint64
|
|
switch h.MsgType {
|
|
case packet.Request:
|
|
lastMid = h.ID
|
|
case packet.Notify:
|
|
lastMid = 0
|
|
default:
|
|
return fmt.Errorf("Invalid message type: %s ", h.MsgType.String())
|
|
}
|
|
conn.SetLastMID(lastMid)
|
|
}
|
|
conn.SetLastHeartbeatAt(time.Now().Unix())
|
|
return nil
|
|
}
|