feat:增加配置文件支持多端口多路复用

README.md

@@ -33,6 +33,7 @@ gb28181:
   port:
     sip: udp:5060 #sip服务器端口
     media: tcp:58200-59200 #媒体服务器端口，用于接收设备的流
+    fdm: false #端口复用,单端口默认多路复用,多端口多路复用根据这个
 
   removebaninterval: 10m #定时移除注册失败的设备黑名单，单位秒，默认10分钟（600秒）
   loglevel:         info

channel.go

@@ -371,20 +371,21 @@ func (channel *Channel) Invite(opt *InviteOptions) (code int, err error) {
 	}
 	protocol := ""
 	networkType := "udp"
-	reusePort := true
+
+	// 根据配置文件判断是否多路复用
+	reusePort := conf.Port.Fdm
+
 	if conf.IsMediaNetworkTCP() {
 		networkType = "tcp"
 		protocol = "TCP/"
 		if conf.tcpPorts.Valid {
 			opt.MediaPort, err = conf.tcpPorts.GetPort()
 			opt.recyclePort = conf.tcpPorts.Recycle
-			reusePort = false
 		}
 	} else {
 		if conf.udpPorts.Valid {
 			opt.MediaPort, err = conf.udpPorts.GetPort()
 			opt.recyclePort = conf.udpPorts.Recycle
-			reusePort = false
 		}
 	}
 	if err != nil {
@@ -392,6 +393,8 @@ func (channel *Channel) Invite(opt *InviteOptions) (code int, err error) {
 	}
 	if opt.MediaPort == 0 {
 		opt.MediaPort = conf.MediaPort
+		// 单端口默认多路复用
+		reusePort = true
 	}
 
 	sdpInfo := []string{

main.go

@@ -34,6 +34,7 @@ type GB28181Config struct {
 	Port       struct { // 新配置方式
 		Sip   string `default:"udp:5060" desc:"sip服务端口号"`
 		Media string `default:"tcp:58200-59200" desc:"媒体服务端口号"`
+		Fdm   bool   `default:"false" desc:"多路复用"`
 	}
 	RegisterValidity  time.Duration `default:"3600s" desc:"注册有效期"` //注册有效期，单位秒，默认 3600
 	HeartbeatInterval time.Duration `default:"60s" desc:"心跳间隔"`    //心跳间隔，单位秒，默认 60

portmanager.go

@@ -3,15 +3,19 @@ package gb28181
 import (
 	"errors"
 )
+
 var ErrNoAvailablePorts = errors.New("no available ports")
+
 type PortManager struct {
 	recycle chan uint16
+	start   uint16
 	max     uint16
 	pos     uint16
 	Valid   bool
 }
 
 func (pm *PortManager) Init(start, end uint16) {
+	pm.start = start
 	pm.pos = start - 1
 	pm.max = end
 	if pm.pos > 0 && pm.max > pm.pos {
@@ -43,7 +47,12 @@ func (pm *PortManager) GetPort() (p uint16, err error) {
 			p = pm.pos
 			return
 		} else {
-			return 0, ErrNoAvailablePorts
+			if conf.Port.Fdm == false {
+				return 0, ErrNoAvailablePorts
+			}
+			pm.pos = pm.start - 1
+			p = pm.pos
+			return
 		}
 	}
 }