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