翻出历史项目，先上传，未测试（MQTT3.1.1已经支持）

session.go

@@ -0,0 +1,63 @@
+package beeq
+
+import (
+	"github.com/zgwit/beeq/packet"
+	"time"
+)
+
+type Session struct {
+	//Bee
+	bee *Bee
+
+	//Client ID (from CONNECT)
+	clientId string
+
+	//Keep Alive (from CONNECT)
+	keepAlive int
+
+	//will topic (from CONNECT)
+	will *packet.Publish
+
+	//Qos1 Qos2
+	pub1 map[uint16]*packet.Publish
+	pub2 map[uint16]*packet.Publish
+
+	//Received Qos2 Publish
+	recvPub2 map[uint16]*packet.Publish
+
+	//Increment 0~65535
+	packetId uint16
+
+	alive bool
+
+	create_time time.Time
+	active_time time.Time
+	lost_time   time.Time
+}
+
+func NewSession() *Session {
+	return &Session{
+		pub1:        make(map[uint16]*packet.Publish),
+		pub2:        make(map[uint16]*packet.Publish),
+		recvPub2:    make(map[uint16]*packet.Publish),
+		alive:       true,
+		create_time: time.Now(),
+		active_time: time.Now(),
+	}
+}
+
+func (session *Session) Alive() bool {
+	return session.alive
+}
+
+func (session *Session) Active(bee *Bee) {
+	session.alive = true
+	session.bee = bee
+	session.active_time = time.Now()
+}
+
+func (session *Session) DeActive() {
+	session.alive = false
+	session.bee = nil
+	session.lost_time = time.Now()
+}