refactor: gb28181仅支持多端口推流, 提升代码健壮性

2025-09-27 03:26:01 +08:00 · 2025-08-08 17:14:33 +08:00
parent cac5e91471
commit ca52588bae
31 changed files with 415 additions and 684 deletions
--- a/api_gb.go
+++ b/api_gb.go
@@ -3,7 +3,6 @@ package main
 import (
 	"fmt"
 	"github.com/lkmio/avformat/bufio"
-	"github.com/lkmio/avformat/utils"
 	"github.com/lkmio/lkm/gb28181"
 	"github.com/lkmio/lkm/log"
 	"github.com/lkmio/lkm/stream"
@@ -74,9 +73,7 @@ func (api *ApiServer) OnGBSourceCreate(v *SourceSDP, w http.ResponseWriter, r *h
 	}

 	if tcp && active {
-		if !stream.AppConfig.GB28181.IsMultiPort() {
-			err = fmt.Errorf("单端口模式下不能主动拉流")
-		} else if !tcp {
+		if !tcp {
 			err = fmt.Errorf("UDP不能主动拉流")
 		} else if !stream.AppConfig.GB28181.IsEnableTCP() {
 			err = fmt.Errorf("未开启TCP收流服务,UDP不能主动拉流")
@@ -218,9 +215,9 @@ func (api *ApiServer) OnGBTalk(w http.ResponseWriter, r *http.Request) {
 	talkSource.Init()
 	talkSource.SetUrlValues(r.Form)

-	_, state := stream.PreparePublishSource(talkSource, true)
-	if utils.HookStateOK != state {
-		log.Sugar.Errorf("对讲失败, source: %s", talkSource)
+	_, err = stream.PreparePublishSource(talkSource, true)
+	if err != nil {
+		log.Sugar.Errorf("对讲失败, err: %s source: %s", err, talkSource)
 		conn.Close()
 		return
 	}
--- a/gb28181/filter.go
+++ b/gb28181/filter.go
@@ -1,10 +0,0 @@
-package gb28181
-
-// Filter 关联Source
-type Filter interface {
-	AddSource(ssrc uint32, source GBSource) bool
-
-	RemoveSource(ssrc uint32)
-
-	FindSource(ssrc uint32) GBSource
-}
--- a/gb28181/filter_single.go
+++ b/gb28181/filter_single.go
@@ -1,21 +0,0 @@
-package gb28181
-
-type singleFilter struct {
-	source GBSource
-}
-
-func (s *singleFilter) AddSource(ssrc uint32, source GBSource) bool {
-	panic("implement me")
-}
-
-func (s *singleFilter) RemoveSource(ssrc uint32) {
-	s.source = nil
-}
-
-func (s *singleFilter) FindSource(ssrc uint32) GBSource {
-	return s.source
-}
-
-func NewSingleFilter(source GBSource) Filter {
-	return &singleFilter{source: source}
-}
--- a/gb28181/filter_ssrc.go
+++ b/gb28181/filter_ssrc.go
@@ -1,38 +0,0 @@
-package gb28181
-
-import (
-	"sync"
-)
-
-type ssrcFilter struct {
-	sources map[uint32]GBSource
-	mute    sync.RWMutex
-}
-
-func (r *ssrcFilter) AddSource(ssrc uint32, source GBSource) bool {
-	r.mute.Lock()
-	defer r.mute.Unlock()
-
-	if _, ok := r.sources[ssrc]; !ok {
-		r.sources[ssrc] = source
-		return true
-	}
-
-	return false
-}
-
-func (r *ssrcFilter) RemoveSource(ssrc uint32) {
-	r.mute.Lock()
-	defer r.mute.Unlock()
-	delete(r.sources, ssrc)
-}
-
-func (r *ssrcFilter) FindSource(ssrc uint32) GBSource {
-	r.mute.RLock()
-	defer r.mute.RUnlock()
-	return r.sources[ssrc]
-}
-
-func NewSSRCFilter(guestCount int) Filter {
-	return &ssrcFilter{sources: make(map[uint32]GBSource, guestCount)}
-}
--- a/gb28181/publish_test.go
+++ b/gb28181/publish_test.go
@@ -24,7 +24,7 @@ import (
 func connectSource(source string, addr string) {
 	v := &struct {
 		Source     string `json:"source"` //GetSourceID
-		RemoteAddr string `json:"remote_addr"`
+		RemoteAddr string `json:"addr"`
 	}{
 		Source:     source,
 		RemoteAddr: addr,
@@ -35,7 +35,7 @@ func connectSource(source string, addr string) {
 		panic(err)
 	}

-	request, err := http.NewRequest("POST", "http://localhost:8080/v1/gb28181/source/connect", bytes.NewBuffer(marshal))
+	request, err := http.NewRequest("POST", "http://localhost:8080/api/v1/gb28181/answer/set", bytes.NewBuffer(marshal))
 	if err != nil {
 		panic(err)
 	}
@@ -209,11 +209,12 @@ func TestPublish(t *testing.T) {
 	//path := "../../source_files/rtp_ps_h264_G7221_0xBEBC204.raw"
 	//var rawSsrc uint32 = 0xBEBC204

-	path := "../../source_files/rtp_ps_h264_G726_0xBEBC205.raw"
+	//path := "../../source_files/rtp_ps_h264_G726_0xBEBC205.raw"
+	path := "../../source_files/rtp_ps_err_parse.raw"
 	var rawSsrc uint32 = 0xBEBC205

 	localAddr := "0.0.0.0:20001"
-	id := "hls_mystream"
+	id := "hls/mystream"

 	data, err := os.ReadFile(path)
 	if err != nil {
@@ -305,7 +306,7 @@ func TestPublish(t *testing.T) {
 	})

 	t.Run("active", func(t *testing.T) {
-		ip, port, ssrc := createSource(id, "active", rawSsrc)
+		_, _, ssrc := createSource(id, "active", rawSsrc)

 		addr, _ := net.ResolveTCPAddr("tcp", localAddr)
 		server := transport.TCPServer{}
@@ -317,6 +318,7 @@ func TestPublish(t *testing.T) {
 				ctrDelay(packet[2:])
 			}

+			server.Close()
 			return nil
 		}, nil, nil)

@@ -325,7 +327,9 @@ func TestPublish(t *testing.T) {
 			panic(err)
 		}

-		connectSource(id, fmt.Sprintf("%s:%d", ip, port))
+		server.Accept()
+		connectSource(id, localAddr)
+		select {}
 	})
 }

@@ -336,10 +340,10 @@ func TestDecode(t *testing.T) {
 			panic(err2)
 		}

-		source := NewPassiveSource()
-		source.Init()
-		filter := NewSingleFilter(source)
-		session := NewTCPSession(nil, filter)
+		source := &PassiveSource{
+			decoder: transport.NewLengthFieldFrameDecoder(0xFFFF, 2),
+		}
+
 		reader := bufio.NewBytesReader(file)

 		for {
@@ -353,7 +357,7 @@ func TestDecode(t *testing.T) {
 				break
 			}

-			err2 = session.DecodeGBRTPOverTCPPacket(bytes, filter, nil)
+			err2 = source.DecodeGBRTPOverTCPPacket(bytes)
 			if err2 != nil {
 				break
 			}
--- a/gb28181/source.go
+++ b/gb28181/source.go
@@ -11,7 +11,6 @@ import (
 	"github.com/lkmio/transport"
 	"github.com/pion/rtp"
 	"math"
-	"net"
 	"strings"
 )

@@ -23,7 +22,6 @@ const (
 	SetupActive  = SetupType(2)

 	PsProbeBufferSize = 1024 * 1024 * 2
-	JitterBufferSize  = 1024 * 1024
 )

 func (s SetupType) TransportType() stream.TransportType {
@@ -65,8 +63,6 @@ func SetupTypeFromString(setupType string) SetupType {

 var (
 	TransportManger transport.Manager
-	SharedUDPServer *UDPServer
-	SharedTCPServer *TCPServer
 )

 // GBSource GB28181推流Source, 统一解析PS流、级联转发.
@@ -75,23 +71,20 @@ type GBSource interface {

 	SetupType() SetupType

-	// PreparePublish 收到流时, 做一些初始化工作.
-	PreparePublish(conn net.Conn, ssrc uint32, source GBSource)
-
-	SetConn(conn net.Conn)
-
 	SetSSRC(ssrc uint32)

 	SSRC() uint32

 	ProcessPacket(data []byte) error
+
+	SetTransport(transport transport.Transport)
 }

 type BaseGBSource struct {
 	stream.PublishSource

-	transport   transport.Transport
 	probeBuffer *mpeg.PSProbeBuffer
+	transport   transport.Transport
 	ssrc        uint32

 	audioTimestamp         int64
@@ -103,23 +96,16 @@ type BaseGBSource struct {
 	sameTimePackets        [][]byte
 }

-func (source *BaseGBSource) Init() {
-	source.TransDemuxer = mpeg.NewPSDemuxer(false)
-	source.TransDemuxer.SetHandler(source)
-	source.TransDemuxer.SetOnPreprocessPacketHandler(func(packet *avformat.AVPacket) {
-		source.correctTimestamp(packet, packet.Dts, packet.Pts)
-	})
-	source.SetType(stream.SourceType28181)
-	source.probeBuffer = mpeg.NewProbeBuffer(PsProbeBufferSize)
-	source.PublishSource.Init()
-	source.lastRtpTimestamp = -1
-}
-
 // ProcessPacket 输入rtp包, 处理PS流, 负责解析->封装->推流
 func (source *BaseGBSource) ProcessPacket(data []byte) error {
 	packet := rtp.Packet{}
 	_ = packet.Unmarshal(data)

+	// 收到第一包, 初始化
+	if source.probeBuffer == nil {
+		source.InitializePublish(packet.SSRC)
+	}
+
 	// 国标级联转发
 	if source.GetTransStreamPublisher().GetForwardTransStream() != nil {
 		if source.lastRtpTimestamp == -1 {
@@ -228,30 +214,17 @@ func (source *BaseGBSource) correctTimestamp(packet *avformat.AVPacket, dts, pts
 }

 func (source *BaseGBSource) Close() {
-	log.Sugar.Infof("GB28181推流结束 ssrc:%d %s", source.ssrc, source.PublishSource.String())
+	log.Sugar.Infof("GB28181推流结束 ssrc: %d %s", source.ssrc, source.PublishSource.String())

-	// 释放收流端口
+	source.PublishSource.Close()
+
+	// 加锁执行, 保证并发安全
+	source.ExecuteWithDeleteLock(func() {
 		if source.transport != nil {
 			source.transport.Close()
 			source.transport = nil
 		}
-
-	// 删除ssrc关联
-	if !stream.AppConfig.GB28181.IsMultiPort() {
-		if SharedTCPServer != nil {
-			SharedTCPServer.filter.RemoveSource(source.ssrc)
-		}
-
-		if SharedUDPServer != nil {
-			SharedUDPServer.filter.RemoveSource(source.ssrc)
-		}
-	}
-
-	source.PublishSource.Close()
-}
-
-func (source *BaseGBSource) SetConn(conn net.Conn) {
-	source.Conn = conn
+	})
 }

 func (source *BaseGBSource) SetSSRC(ssrc uint32) {
@@ -262,27 +235,43 @@ func (source *BaseGBSource) SSRC() uint32 {
 	return source.ssrc
 }

-func (source *BaseGBSource) PreparePublish(conn net.Conn, ssrc uint32, source_ GBSource) {
-	source.SetConn(conn)
-	source.SetSSRC(ssrc)
-	source.SetState(stream.SessionStateTransferring)
+func (source *BaseGBSource) InitializePublish(ssrc uint32) {
+	if source.ssrc != ssrc {
+		log.Sugar.Warnf("创建source的ssrc与实际推流的ssrc不一致, 创建的ssrc: %x 实际推流的ssrc: %x source: %s", source.ssrc, ssrc, source.GetID())
+	}
+
+	// 初始化ps解复用器
+	source.TransDemuxer.SetOnPreprocessPacketHandler(func(packet *avformat.AVPacket) {
+		source.correctTimestamp(packet, packet.Dts, packet.Pts)
+	})
+	source.probeBuffer = mpeg.NewProbeBuffer(PsProbeBufferSize)
+	source.lastRtpTimestamp = -1
+
+	source.ssrc = ssrc
 	source.audioTimestamp = -1
 	source.videoTimestamp = -1
 	source.audioPacketCreatedTime = -1
 	source.videoPacketCreatedTime = -1

-	if stream.AppConfig.Hooks.IsEnablePublishEvent() {
-		go func() {
-			if _, state := stream.HookPublishEvent(source_); utils.HookStateOK == state {
+	p := stream.SourceManager.Find(source.GetID())
+	if p == nil {
+		log.Sugar.Errorf("GB28181推流失败, 未找到source: %s", source.GetID())
+		source.Close()
 		return
 	}

-			log.Sugar.Errorf("GB28181 推流失败 source:%s", source.GetID())
-			if conn != nil {
-				conn.Close()
-			}
-		}()
-	}
+	stream.PreparePublishSourceWithAsync(p, false)
+}
+
+func (source *BaseGBSource) Init() {
+	// 创建ps解复用器
+	source.TransDemuxer = mpeg.NewPSDemuxer(false)
+	source.TransDemuxer.SetHandler(source)
+	source.PublishSource.Init()
+}
+
+func (source *BaseGBSource) SetTransport(transport transport.Transport) {
+	source.transport = transport
 }

 // NewGBSource 创建国标推流源, 返回监听的收流端口
@@ -294,9 +283,10 @@ func NewGBSource(id string, ssrc uint32, tcp bool, active bool) (GBSource, int,
 	}

 	if active {
-		utils.Assert(tcp && stream.AppConfig.GB28181.IsEnableTCP() && stream.AppConfig.GB28181.IsMultiPort())
+		utils.Assert(tcp && stream.AppConfig.GB28181.IsEnableTCP())
 	}

+	var transportServer transport.Transport
 	var source GBSource
 	var port int
 	var err error
@@ -304,55 +294,46 @@ func NewGBSource(id string, ssrc uint32, tcp bool, active bool) (GBSource, int,
 	if active {
 		source, port, err = NewActiveSource()
 	} else if tcp {
+		transportServer, err = TransportManger.NewTCPServer()
+		if err != nil {
+			return nil, 0, err
+		}
+
 		source = NewPassiveSource()
+		transportServer.(*transport.TCPServer).SetHandler(source.(*PassiveSource))
+		transportServer.(*transport.TCPServer).Accept()
+		port = transportServer.ListenPort()
 	} else {
+		transportServer, err = TransportManger.NewUDPServer()
+		if err != nil {
+			return nil, 0, err
+		}
+
 		source = NewUDPSource()
+		transportServer.(*transport.UDPServer).SetHandler(source.(*UDPSource))
+		transportServer.(*transport.UDPServer).Receive()
+		port = transportServer.ListenPort()
 	}

-	if err != nil {
-		return nil, 0, err
-	}
-
-	// 单端口模式，绑定ssrc
-	if !stream.AppConfig.GB28181.IsMultiPort() {
-		var success bool
-		if tcp {
-			success = SharedTCPServer.filter.AddSource(ssrc, source)
-		} else {
-			success = SharedUDPServer.filter.AddSource(ssrc, source)
-		}
-
-		if !success {
-			return nil, 0, fmt.Errorf("ssrc conflict")
-		}
-
-		port = stream.AppConfig.GB28181.Port[0]
-	} else if !active {
-		// 多端口模式, 创建收流Server
-		if tcp {
-			tcpServer, err := NewTCPServer(NewSingleFilter(source))
-			if err != nil {
-				return nil, 0, err
-			}
-
-			port = tcpServer.tcp.ListenPort()
-			source.(*PassiveSource).transport = tcpServer.tcp
-		} else {
-			server, err := NewUDPServer(NewSingleFilter(source))
-			if err != nil {
-				return nil, 0, err
-			}
-
-			port = server.udp.ListenPort()
-			source.(*UDPSource).transport = server.udp
-		}
-	}
-
+	source.SetType(stream.SourceType28181)
 	source.SetID(id)
 	source.SetSSRC(ssrc)
+	// 加锁保护一下, 防止初始化阶段, 调用关闭source接口, 发生并发安全问题
+	source.ExecuteWithDeleteLock(func() {
+		if err = stream.AddSource(source); err != nil {
+			return
+		}
+
+		source.SetTransport(transportServer)
 		source.Init()
-	if _, state := stream.PreparePublishSource(source, false); utils.HookStateOK != state {
-		return nil, 0, fmt.Errorf("error code %d", state)
+	})
+
+	// id冲突
+	if err != nil {
+		if transportServer != nil {
+			transportServer.Close()
+		}
+		return nil, 0, err
 	}

 	stream.LoopEvent(source)
--- a/gb28181/source_active.go
+++ b/gb28181/source_active.go
@@ -1,24 +1,30 @@
 package gb28181

 import (
+	"github.com/lkmio/lkm/stream"
+	"github.com/lkmio/transport"
 	"net"
 )

 type ActiveSource struct {
-	PassiveSource
-
+	*PassiveSource
 	port       int
 	remoteAddr net.TCPAddr
-	tcp        *TCPClient
 }

 func (a *ActiveSource) Connect(remoteAddr *net.TCPAddr) error {
-	client, err := NewTCPClient(a.port, remoteAddr, a)
+	client := &transport.TCPClient{}
+	client.SetHandler(a.PassiveSource)
+
+	addr, err := net.ResolveTCPAddr("tcp", stream.ListenAddr(a.port))
 	if err != nil {
 		return err
+	} else if _, err = client.Connect(addr, remoteAddr); err != nil {
+		return err
 	}

-	a.tcp = client
+	go client.Receive()
+	a.transport = client
 	return nil
 }

@@ -28,12 +34,23 @@ func (a *ActiveSource) SetupType() SetupType {

 func NewActiveSource() (*ActiveSource, int, error) {
 	var port int
-	TransportManger.AllocPort(true, func(port_ uint16) error {
+	err := TransportManger.AllocPort(true, func(port_ uint16) error {
 		port = int(port_)
 		return nil
 	})

+	if err != nil {
+		return nil, 0, err
+	}
+
 	return &ActiveSource{
+		PassiveSource: &PassiveSource{
+			StreamServer: stream.StreamServer[GBSource]{
+				SourceType: stream.SourceType28181,
+			},
+			decoder:       transport.NewLengthFieldFrameDecoder(0xFFFF, 2),
+			receiveBuffer: stream.TCPReceiveBufferPool.Get().([]byte),
+		},
 		port: port,
 	}, port, nil
 }
--- a/gb28181/source_passive.go
+++ b/gb28181/source_passive.go
@@ -1,13 +1,105 @@
 package gb28181

+import (
+	"encoding/hex"
+	"github.com/lkmio/lkm/log"
+	"github.com/lkmio/lkm/stream"
+	"github.com/lkmio/transport"
+	"net"
+)
+
 type PassiveSource struct {
+	stream.StreamServer[GBSource]
 	BaseGBSource
+	decoder       *transport.LengthFieldFrameDecoder
+	receiveBuffer []byte
+	remoteAddr    string
 }

 func (p *PassiveSource) SetupType() SetupType {
 	return SetupPassive
 }

-func NewPassiveSource() *PassiveSource {
-	return &PassiveSource{}
+func (p *PassiveSource) Close() {
+	p.BaseGBSource.Close()
+	stream.TCPReceiveBufferPool.Put(p.receiveBuffer[:cap(p.receiveBuffer)])
+}
+
+func (p *PassiveSource) DecodeGBRTPOverTCPPacket(data []byte) error {
+	length := len(data)
+	for i := 0; i < length; {
+		// 解析粘包数据
+		n, bytes, err := p.decoder.Input(data[i:])
+		if err != nil {
+			return err
+		}
+
+		i += n
+		if bytes == nil {
+			break
+		}
+
+		if err = p.ProcessPacket(bytes); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (p *PassiveSource) OnConnected(conn net.Conn) []byte {
+	p.StreamServer.OnConnected(conn)
+
+	var ok bool
+	p.ExecuteWithDeleteLock(func() {
+		if p.IsClosed() {
+			log.Sugar.Infof("source %s 已关闭, 拒绝新连接", p.GetID())
+		} else if ok = p.PublishSource.Conn == nil; ok {
+			// 一个推流一个端口, 默认第一个连接为有效连接, 关闭其他连接
+			p.PublishSource.Conn = conn
+			p.remoteAddr = conn.RemoteAddr().String()
+		} else {
+			log.Sugar.Infof("port %d 已连接, 关闭连接. source: %s", p.transport.ListenPort(), p.GetID())
+		}
+	})
+
+	if !ok {
+		_ = conn.Close()
+		return nil
+	}
+
+	return p.receiveBuffer
+}
+
+func (p *PassiveSource) OnPacket(conn net.Conn, data []byte) []byte {
+	p.StreamServer.OnPacket(conn, data)
+
+	err := p.DecodeGBRTPOverTCPPacket(data)
+	if err != nil {
+		log.Sugar.Errorf("解析rtp失败 err: %s conn: %s data: %s", err.Error(), conn.RemoteAddr().String(), hex.EncodeToString(data))
+		_ = conn.Close()
+		return nil
+	}
+
+	return p.receiveBuffer
+}
+
+func (p *PassiveSource) OnDisConnected(conn net.Conn, err error) {
+	p.StreamServer.OnDisConnected(conn, err)
+
+	if conn.RemoteAddr().String() == p.remoteAddr {
+		p.Close()
+	}
+}
+
+func NewPassiveSource() *PassiveSource {
+	source := &PassiveSource{
+		StreamServer: stream.StreamServer[GBSource]{
+			SourceType: stream.SourceType28181,
+		},
+		decoder:       transport.NewLengthFieldFrameDecoder(0xFFFF, 2),
+		receiveBuffer: stream.TCPReceiveBufferPool.Get().([]byte),
+	}
+
+	return source
 }
--- a/gb28181/source_udp.go
+++ b/gb28181/source_udp.go
@@ -1,14 +1,16 @@
 package gb28181

 import (
+	"github.com/lkmio/lkm/log"
 	"github.com/lkmio/lkm/stream"
 	"github.com/pion/rtp"
+	"net"
 )

 // UDPSource 国标UDP推流源
 type UDPSource struct {
+	stream.StreamServer[interface{}]
 	BaseGBSource
-
 	jitterBuffer *stream.JitterBuffer[*rtp.Packet]
 }

@@ -18,12 +20,12 @@ func (u *UDPSource) SetupType() SetupType {

 // OnOrderedRtp 有序RTP包回调
 func (u *UDPSource) OnOrderedRtp(packet *rtp.Packet) {
-	// 此时还在网络收流携程, 交给Source的主协程处理
-	u.ProcessPacket(packet.Raw)
+	_ = u.ProcessPacket(packet.Raw)
+	// 处理完后, 归还buffer
 	stream.UDPReceiveBufferPool.Put(packet.Raw[:cap(packet.Raw)])
 }

-// InputRtpPacket 将RTP包排序后，交给Source的主协程处理
+// InputRtpPacket 将RTP包排序后，交给Source处理
 func (u *UDPSource) InputRtpPacket(pkt *rtp.Packet) error {
 	block := stream.UDPReceiveBufferPool.Get().([]byte)
 	copy(block, pkt.Raw)
@@ -45,8 +47,31 @@ func (u *UDPSource) Close() {
 	u.BaseGBSource.Close()
 }

+func (u *UDPSource) OnPacket(conn net.Conn, data []byte) []byte {
+	u.StreamServer.OnPacket(conn, data)
+
+	packet := rtp.Packet{}
+	err := packet.Unmarshal(data)
+	if err != nil {
+		log.Sugar.Errorf("解析rtp失败 err:%s conn:%s", err.Error(), conn.RemoteAddr().String())
+		return nil
+	} else if u.Conn == nil {
+		u.Conn = conn
+	}
+
+	packet.Raw = data
+	_ = u.InputRtpPacket(&packet)
+	return nil
+}
+
 func NewUDPSource() *UDPSource {
-	return &UDPSource{
+	source := &UDPSource{
 		jitterBuffer: stream.NewJitterBuffer[*rtp.Packet](),
 	}
+
+	source.StreamServer = stream.StreamServer[interface{}]{
+		SourceType: stream.SourceType28181,
+	}
+
+	return source
 }
--- a/gb28181/ssrc_manager.go
+++ b/gb28181/ssrc_manager.go
@@ -2,7 +2,6 @@ package gb28181

 import (
 	"fmt"
-	"strconv"
 	"sync"
 )

@@ -13,7 +12,6 @@ const (
 var (
 	ssrcCount uint32
 	lock      sync.Mutex
-	SSRCFilters []Filter
 )

 func NextSSRC() uint32 {
@@ -23,19 +21,7 @@ func NextSSRC() uint32 {
 	return ssrcCount
 }

-func getUniqueSSRC(ssrc string, get func() string) string {
-	atoi, err := strconv.Atoi(ssrc)
-	if err != nil {
-		panic(err)
-	}
-
-	v := uint32(atoi)
-	for _, filter := range SSRCFilters {
-		if filter.FindSource(v) != nil {
-			ssrc = get()
-		}
-	}
-
+func getUniqueSSRC(ssrc string, _ func() string) string {
 	return ssrc
 }

--- a/gb28181/tcp_client.go
+++ b/gb28181/tcp_client.go
@@ -1,28 +0,0 @@
-package gb28181
-
-import (
-	"github.com/lkmio/lkm/stream"
-	"github.com/lkmio/transport"
-	"net"
-)
-
-// TCPClient GB28181TCP主动收流
-type TCPClient struct {
-	TCPServer
-}
-
-func NewTCPClient(listenPort int, remoteAddr *net.TCPAddr, source GBSource) (*TCPClient, error) {
-	client := &TCPClient{
-		TCPServer{filter: NewSingleFilter(source)},
-	}
-	tcp := transport.TCPClient{}
-	tcp.SetHandler(client)
-
-	addr, err := net.ResolveTCPAddr("tcp", stream.ListenAddr(listenPort))
-	if err != nil {
-		return client, err
-	}
-
-	_, err = tcp.Connect(addr, remoteAddr)
-	return client, err
-}
--- a/gb28181/tcp_server.go
+++ b/gb28181/tcp_server.go
@@ -1,96 +0,0 @@
-package gb28181
-
-import (
-	"encoding/hex"
-	"github.com/lkmio/lkm/log"
-	"github.com/lkmio/lkm/stream"
-	"github.com/lkmio/transport"
-	"net"
-	"runtime"
-)
-
-// TCPServer GB28181TCP被动收流
-type TCPServer struct {
-	stream.StreamServer[*TCPSession]
-	tcp    *transport.TCPServer
-	filter Filter
-}
-
-func (T *TCPServer) OnNewSession(conn net.Conn) *TCPSession {
-	return NewTCPSession(conn, T.filter)
-}
-
-func (T *TCPServer) OnCloseSession(session *TCPSession) {
-	session.Close()
-
-	if session.source != nil {
-		T.filter.RemoveSource(session.source.SSRC())
-	}
-
-	if stream.AppConfig.GB28181.IsMultiPort() {
-		T.tcp.Close()
-		T.Handler = nil
-	}
-}
-
-func (T *TCPServer) OnConnected(conn net.Conn) []byte {
-	T.StreamServer.OnConnected(conn)
-	return conn.(*transport.Conn).Data.(*TCPSession).receiveBuffer
-}
-
-func (T *TCPServer) OnPacket(conn net.Conn, data []byte) []byte {
-	T.StreamServer.OnPacket(conn, data)
-	session := conn.(*transport.Conn).Data.(*TCPSession)
-
-	err := session.DecodeGBRTPOverTCPPacket(data, T.filter, conn)
-	if err != nil {
-		log.Sugar.Errorf("解析rtp失败 err: %s conn: %s data: %s", err.Error(), conn.RemoteAddr().String(), hex.EncodeToString(data))
-		_ = conn.Close()
-		return nil
-	}
-
-	return session.receiveBuffer
-}
-
-func NewTCPServer(filter Filter) (*TCPServer, error) {
-	server := &TCPServer{
-		filter: filter,
-	}
-
-	var tcp *transport.TCPServer
-	var err error
-	if stream.AppConfig.GB28181.IsMultiPort() {
-		tcp = &transport.TCPServer{}
-		tcp, err = TransportManger.NewTCPServer()
-		if err != nil {
-			return nil, err
-		}
-
-	} else {
-		tcp = &transport.TCPServer{
-			ReuseServer: transport.ReuseServer{
-				EnableReuse:      true,
-				ConcurrentNumber: runtime.NumCPU(),
-			},
-		}
-
-		var gbAddr *net.TCPAddr
-		gbAddr, err = net.ResolveTCPAddr("tcp", stream.ListenAddr(stream.AppConfig.GB28181.Port[0]))
-		if err != nil {
-			return nil, err
-		}
-
-		if err = tcp.Bind(gbAddr); err != nil {
-			return server, err
-		}
-	}
-
-	tcp.SetHandler(server)
-	tcp.Accept()
-	server.tcp = tcp
-	server.StreamServer = stream.StreamServer[*TCPSession]{
-		SourceType: stream.SourceType28181,
-		Handler:    server,
-	}
-	return server, nil
-}
--- a/gb28181/tcp_session.go
+++ b/gb28181/tcp_session.go
@@ -1,88 +0,0 @@
-package gb28181
-
-import (
-	"fmt"
-	"github.com/lkmio/lkm/stream"
-	"github.com/lkmio/transport"
-	"github.com/pion/rtp"
-	"net"
-)
-
-// TCPSession 国标TCP主被动推流Session, 统一处理TCP粘包.
-type TCPSession struct {
-	conn          net.Conn
-	source        GBSource
-	decoder       *transport.LengthFieldFrameDecoder
-	receiveBuffer []byte
-}
-
-func (t *TCPSession) Init(source GBSource) {
-	t.source = source
-}
-
-func (t *TCPSession) Close() {
-	t.conn = nil
-	if t.source != nil {
-		t.source.Close()
-		t.source = nil
-	}
-
-	stream.TCPReceiveBufferPool.Put(t.receiveBuffer[:cap(t.receiveBuffer)])
-}
-
-func (t *TCPSession) DecodeGBRTPOverTCPPacket(data []byte, filter Filter, conn net.Conn) error {
-	length := len(data)
-	for i := 0; i < length; {
-		// 解析粘包数据
-		n, bytes, err := t.decoder.Input(data[i:])
-		if err != nil {
-			return err
-		}
-
-		i += n
-		if bytes == nil {
-			break
-		}
-
-		// 单端口模式,ssrc匹配source
-		if t.source == nil || stream.SessionStateHandshakeSuccess == t.source.State() {
-			packet := rtp.Packet{}
-			if err = packet.Unmarshal(bytes); err != nil {
-				return err
-			} else if t.source == nil {
-				t.source = filter.FindSource(packet.SSRC)
-			}
-
-			if t.source == nil {
-				// ssrc 匹配不到Source
-				return fmt.Errorf("gb28181推流失败 ssrc: %x 匹配不到source", packet.SSRC)
-			}
-
-			if stream.SessionStateHandshakeSuccess == t.source.State() {
-				t.source.PreparePublish(conn, packet.SSRC, t.source)
-			}
-		}
-
-		if err = t.source.ProcessPacket(bytes); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func NewTCPSession(conn net.Conn, filter Filter) *TCPSession {
-	session := &TCPSession{
-		conn: conn,
-		// filter:  filter,
-		decoder:       transport.NewLengthFieldFrameDecoder(0xFFFF, 2),
-		receiveBuffer: stream.TCPReceiveBufferPool.Get().([]byte),
-	}
-
-	// 多端口收流, Source已知, 直接初始化Session
-	if stream.AppConfig.GB28181.IsMultiPort() {
-		session.Init(filter.(*singleFilter).source)
-	}
-
-	return session
-}
--- a/gb28181/udp_server.go
+++ b/gb28181/udp_server.go
@@ -1,91 +0,0 @@
-package gb28181
-
-import (
-	"github.com/lkmio/lkm/log"
-	"github.com/lkmio/lkm/stream"
-	"github.com/lkmio/transport"
-	"github.com/pion/rtp"
-	"net"
-	"runtime"
-)
-
-// UDPServer GB28181UDP收流
-type UDPServer struct {
-	stream.StreamServer[*UDPSource]
-	udp    *transport.UDPServer
-	filter Filter
-}
-
-func (U *UDPServer) OnNewSession(_ net.Conn) *UDPSource {
-	return nil
-}
-
-func (U *UDPServer) OnCloseSession(_ *UDPSource) {
-}
-
-func (U *UDPServer) OnPacket(conn net.Conn, data []byte) []byte {
-	U.StreamServer.OnPacket(conn, data)
-
-	packet := rtp.Packet{}
-	err := packet.Unmarshal(data)
-	if err != nil {
-		log.Sugar.Errorf("解析rtp失败 err:%s conn:%s", err.Error(), conn.RemoteAddr().String())
-		return nil
-	}
-
-	source := U.filter.FindSource(packet.SSRC)
-	if source == nil {
-		log.Sugar.Errorf("ssrc匹配source失败 ssrc:%x conn:%s", packet.SSRC, conn.RemoteAddr().String())
-		return nil
-	}
-
-	if stream.SessionStateHandshakeSuccess == source.State() {
-		conn.(*transport.Conn).Data = source
-		source.PreparePublish(conn, packet.SSRC, source)
-	}
-
-	packet.Raw = data
-	_ = source.(*UDPSource).InputRtpPacket(&packet)
-	return nil
-}
-
-func NewUDPServer(filter Filter) (*UDPServer, error) {
-	server := &UDPServer{
-		filter: filter,
-	}
-
-	var udp *transport.UDPServer
-	var err error
-	if stream.AppConfig.GB28181.IsMultiPort() {
-		udp, err = TransportManger.NewUDPServer()
-		if err != nil {
-			return nil, err
-		}
-	} else {
-		udp = &transport.UDPServer{
-			ReuseServer: transport.ReuseServer{
-				EnableReuse:      true,
-				ConcurrentNumber: runtime.NumCPU(),
-			},
-		}
-
-		var gbAddr *net.UDPAddr
-		gbAddr, err = net.ResolveUDPAddr("udp", stream.ListenAddr(stream.AppConfig.GB28181.Port[0]))
-		if err != nil {
-			return nil, err
-		}
-
-		if err = udp.Bind(gbAddr); err != nil {
-			return server, err
-		}
-	}
-
-	udp.SetHandler(server)
-	udp.Receive()
-	server.udp = udp
-	server.StreamServer = stream.StreamServer[*UDPSource]{
-		SourceType: stream.SourceType28181,
-		Handler:    server,
-	}
-	return server, nil
-}
--- a/jt1078/jt_server.go
+++ b/jt1078/jt_server.go
@@ -26,6 +26,7 @@ func (s *jtServer) OnNewSession(conn net.Conn) *Session {

 func (s *jtServer) OnCloseSession(session *Session) {
 	session.Close()
+	stream.TCPReceiveBufferPool.Put(session.receiveBuffer[:cap(session.receiveBuffer)])
 }

 func (s *jtServer) OnPacket(conn net.Conn, data []byte) []byte {
--- a/jt1078/jt_session.go
+++ b/jt1078/jt_session.go
@@ -1,7 +1,6 @@
 package jt1078

 import (
-	"github.com/lkmio/avformat/utils"
 	"github.com/lkmio/lkm/log"
 	"github.com/lkmio/lkm/stream"
 	"github.com/lkmio/transport"
@@ -33,20 +32,10 @@ func (s *Session) Input(data []byte) (int, error) {
 			return -1, err
 		}

-		// 首包处理, hook通知
+		// 首包处理
 		if firstOfPacket && demuxer.prevPacket != nil {
 			s.SetID(demuxer.sim + "/" + strconv.Itoa(demuxer.channel))
-
-			go func() {
-				_, state := stream.PreparePublishSource(s, true)
-				if utils.HookStateOK != state {
-					log.Sugar.Errorf("1078推流失败 source: %s", demuxer.sim)
-
-					if s.Conn != nil {
-						s.Conn.Close()
-					}
-				}
-			}()
+			stream.PreparePublishSourceWithAsync(s, true)
 		}
 	}

@@ -56,13 +45,7 @@ func (s *Session) Input(data []byte) (int, error) {
 func (s *Session) Close() {
 	log.Sugar.Infof("1078推流结束 %s", s.String())

-	if s.Conn != nil {
-		s.Conn.Close()
-		s.Conn = nil
-	}
-
 	s.PublishSource.Close()
-	stream.TCPReceiveBufferPool.Put(s.receiveBuffer[:cap(s.receiveBuffer)])
 }

 func NewSession(conn net.Conn, version int) *Session {
--- a/jt1078/jt_test.go
+++ b/jt1078/jt_test.go
@@ -218,9 +218,9 @@ func TestPublish(t *testing.T) {
 	})

 	t.Run("publish", func(t *testing.T) {
-		//path := "../../source_files/10352264314-2.bin"
+		path := "../../source_files/10352264314-2.bin"
 		//path := "../../source_files/013800138000-1.bin"
-		path := "../../source_files/0714-1.bin"
+		//path := "../../source_files/0714-1.bin"
 		publish(path, "1078")
 	})

--- a/main.go
+++ b/main.go
@@ -75,11 +75,11 @@ func init() {
 	// 初始化日志
 	log.InitLogger(config.Log.FileLogging, zapcore.Level(stream.AppConfig.Log.Level), stream.AppConfig.Log.Name, stream.AppConfig.Log.MaxSize, stream.AppConfig.Log.MaxBackup, stream.AppConfig.Log.MaxAge, stream.AppConfig.Log.Compress)

-	if stream.AppConfig.GB28181.Enable && stream.AppConfig.GB28181.IsMultiPort() {
+	if stream.AppConfig.GB28181.Enable {
 		gb28181.TransportManger = transport.NewTransportManager(config.ListenIP, uint16(stream.AppConfig.GB28181.Port[0]), uint16(stream.AppConfig.GB28181.Port[1]))
 	}

-	if stream.AppConfig.Rtsp.Enable && stream.AppConfig.Rtsp.IsMultiPort() {
+	if stream.AppConfig.Rtsp.Enable {
 		rtsp.TransportManger = transport.NewTransportManager(config.ListenIP, uint16(stream.AppConfig.Rtsp.Port[1]), uint16(stream.AppConfig.Rtsp.Port[2]))
 	}

@@ -134,33 +134,7 @@ func main() {
 	log.Sugar.Info("启动http服务 addr:", stream.ListenAddr(stream.AppConfig.Http.Port))
 	go startApiServer(net.JoinHostPort(stream.AppConfig.ListenIP, strconv.Itoa(stream.AppConfig.Http.Port)))

-	// 单端口模式下, 启动时就创建收流端口
-	// 多端口模式下, 创建GBSource时才创建收流端口
-	if stream.AppConfig.GB28181.Enable && !stream.AppConfig.GB28181.IsMultiPort() {
-		if stream.AppConfig.GB28181.IsEnableUDP() {
-			filter := gb28181.NewSSRCFilter(128)
-			server, err := gb28181.NewUDPServer(filter)
-			if err != nil {
-				panic(err)
-			}
-
-			gb28181.SharedUDPServer = server
-			log.Sugar.Info("启动GB28181 udp收流端口成功:" + stream.ListenAddr(stream.AppConfig.GB28181.Port[0]))
-			gb28181.SSRCFilters = append(gb28181.SSRCFilters, filter)
-		}
-
-		if stream.AppConfig.GB28181.IsEnableTCP() {
-			filter := gb28181.NewSSRCFilter(128)
-			server, err := gb28181.NewTCPServer(filter)
-			if err != nil {
-				panic(err)
-			}
-
-			gb28181.SharedTCPServer = server
-			log.Sugar.Info("启动GB28181 tcp收流端口成功:" + stream.ListenAddr(stream.AppConfig.GB28181.Port[0]))
-			gb28181.SSRCFilters = append(gb28181.SSRCFilters, filter)
-		}
-	}
+	// GB28181收流时调用api创建收流端口

 	if stream.AppConfig.JT1078.Enable {
 		// 无法通过包头区分2016和2019, 每个版本创建一个Server
--- a/rtmp/rtmp_session.go
+++ b/rtmp/rtmp_session.go
@@ -6,6 +6,7 @@ import (
 	"github.com/lkmio/lkm/stream"
 	"github.com/lkmio/rtmp"
 	"net"
+	"strings"
 )

 // Session RTMP会话, 解析处理Message
@@ -40,9 +41,17 @@ func (s *Session) OnPublish(app, stream_ string) utils.HookState {
 	source.SetUrlValues(values)

 	// 统一处理source推流事件, source是否已经存在, hook回调....
-	_, state := stream.PreparePublishSource(source, true)
-	if utils.HookStateOK != state {
-		log.Sugar.Errorf("rtmp推流失败 source: %s", sourceId)
+	state := utils.HookStateOK
+	_, err := stream.PreparePublishSource(source, true)
+	if err != nil {
+		str := err.Error()
+		log.Sugar.Errorf("rtmp推流失败 source: %s err: %s", sourceId, str)
+
+		if strings.HasSuffix(str, "exist") {
+			state = utils.HookStateOccupy
+		} else {
+			state = utils.HookStateFailure
+		}
 	} else {
 		s.handle = source
 		s.isPublisher = true
@@ -77,7 +86,7 @@ func (s *Session) Input(data []byte) error {
 		s.handle.(*Publisher).UpdateReceiveStats(len(data))

 		var err error
-		s.handle.(*Publisher).ExecuteSyncEvent(func() {
+		s.handle.(*Publisher).ExecuteWithStreamLock(func() {
 			err = s.stack.Input(s.conn, data)
 		})

--- a/stream/config.go
+++ b/stream/config.go
@@ -124,14 +124,6 @@ func (g TransportConfig) IsEnableUDP() bool {
 	return strings.Contains(g.Transport, "UDP")
 }

-func (g GB28181Config) IsMultiPort() bool {
-	return len(g.Port) > 1
-}
-
-func (g RtspConfig) IsMultiPort() bool {
-	return len(g.Port) == 3
-}
-
 // M3U8Path 根据sourceId返回m3u8的磁盘路径
 // 切片及目录生成规则, 以SourceId为34020000001320000001/34020000001320000001为例:
 // 创建文件夹34020000001320000001, 34020000001320000001.m3u8文件, 文件列表中切片url为34020000001320000001_seq.ts
--- a/stream/hook.go
+++ b/stream/hook.go
@@ -59,15 +59,16 @@ func Hook(event HookEvent, params string, body interface{}) (*http.Response, err
 	response, err := SendHookEvent(url, bytes)
 	if err != nil {
 		log.Sugar.Errorf("failed to %s the hook event. err: %s", event.ToString(), err.Error())
+		return response, err
 	} else {
 		log.Sugar.Infof("received response for hook %s event: status='%s', response body='%s'", event.ToString(), response.Status, responseBodyToString(response))
 	}

-	if err == nil && http.StatusOK != response.StatusCode {
-		return response, fmt.Errorf("unexpected response status: %s for request %s", response.Status, url)
+	if http.StatusOK != response.StatusCode {
+		return response, fmt.Errorf("unexpected response status: %s", response.Status)
 	}

-	return response, err
+	return response, nil
 }

 func NewHookPlayEventInfo(sink Sink) eventInfo {
--- a/stream/hook_source.go
+++ b/stream/hook_source.go
@@ -2,53 +2,83 @@ package stream

 import (
 	"encoding/json"
+	"fmt"
 	"github.com/lkmio/avformat/utils"
 	"github.com/lkmio/lkm/log"
 	"net/http"
 	"time"
 )

-func PreparePublishSource(source Source, hook bool) (*http.Response, utils.HookState) {
-	var response *http.Response
-
-	if err := SourceManager.Add(source); err != nil {
-		return nil, utils.HookStateOccupy
+func AddSource(source Source) error {
+	err := SourceManager.add(source)
+	if err == nil {
+		source.SetState(SessionStateHandshakeSuccess)
 	}

-	if hook && AppConfig.Hooks.IsEnablePublishEvent() {
-		rep, state := HookPublishEvent(source)
-		if utils.HookStateOK != state {
+	return err
+}
+
+func PreparePublishSource(source Source, add bool) (*http.Response, error) {
+	var response *http.Response
+
+	if add {
+		if err := AddSource(source); err != nil {
+			return nil, err
+		}
+	} else if SourceManager.Find(source.GetID()) == nil {
+		return nil, fmt.Errorf("not found")
+	}
+
+	if AppConfig.Hooks.IsEnablePublishEvent() {
+		rep, err := HookPublishEvent(source)
+		if err != nil {
 			_, _ = SourceManager.Remove(source.GetID())
-			return rep, state
+			return rep, err
 		}

 		response = rep
 	}

+	// 此时才认为source推流成功
+	source.SetState(SessionStateTransferring)
 	source.SetCreateTime(time.Now())

 	urls := GetStreamPlayUrls(source.GetID())
 	indent, _ := json.MarshalIndent(urls, "", "\t")

-	log.Sugar.Infof("%s准备推流 source:%s 拉流地址:\r\n%s", source.GetType().String(), source.GetID(), indent)
+	log.Sugar.Infof("%s推流 source: %s 拉流地址:\r\n%s", source.GetType().String(), source.GetID(), indent)

-	source.SetState(SessionStateTransferring)
-	return response, utils.HookStateOK
+	return response, nil
 }

-func HookPublishEvent(source Source) (*http.Response, utils.HookState) {
-	var response *http.Response
+func PreparePublishSourceWithAsync(source Source, add bool) {
+	go func() {
+		var err error
+		// 加锁执行, 保证并发安全
+		source.ExecuteWithDeleteLock(func() {
+			if source.IsClosed() {
+				err = fmt.Errorf("source is closed")
+			} else if _, err = PreparePublishSource(source, add); err == nil {
+			}
+		})

-	if AppConfig.Hooks.IsEnablePublishEvent() {
-		hook, err := Hook(HookEventPublish, source.UrlValues().Encode(), NewHookPublishEventInfo(source))
 		if err != nil {
-			return hook, utils.HookStateFailure
+			log.Sugar.Errorf("GB28181推流失败 err: %s source: %s", err.Error(), source.GetID())
+
+			if !source.IsClosed() {
+				source.Close()
+			}
+		}
+	}()
+
+}
+
+func HookPublishEvent(source Source) (*http.Response, error) {
+	if AppConfig.Hooks.IsEnablePublishEvent() {
+		return Hook(HookEventPublish, source.UrlValues().Encode(), NewHookPublishEventInfo(source))
 	}

-		response = hook
-	}
-
-	return response, utils.HookStateOK
+	return nil, nil
 }

 func HookPublishDoneEvent(source Source) {
--- a/stream/mw_buffer.go
+++ b/stream/mw_buffer.go
@@ -33,8 +33,8 @@ type MergeWritingBuffer interface {
 }

 type mbBuffer struct {
-	buffer   collections.BlockBuffer
-	segments *collections.Queue[*collections.ReferenceCounter[[]byte]]
+	buffer   collections.BlockBuffer                                   // 合并写内存缓冲区
+	segments *collections.Queue[*collections.ReferenceCounter[[]byte]] // 包含多个合并写切片
 }

 type mergeWritingBuffer struct {
@@ -56,13 +56,15 @@ func (m *mergeWritingBuffer) TryAlloc(size int, ts int64, videoPkt, videoKey boo

 	buffer := m.buffers.Peek(m.buffers.Size() - 1).buffer
 	bytes := buffer.AvailableBytes()
+	// 内存不足, 分配新的内存缓冲区
 	if bytes < size {
-		// 非完整切片，先保存切片再分配新的内存
+		// 让外部先flush, 再分配新的内存
 		if buffer.PendingBlockSize() > 0 {
 			return nil, false
 		}

-		// -1, 当前内存池不释放
+		// 释放未使用的内存缓冲区
+		// -1, 最新的内存缓冲区不释放
 		release(m.buffers, m.buffers.Size()-1)
 		m.buffers.Push(MWBufferPool.Get().(*mbBuffer))
 	}
@@ -116,6 +118,7 @@ func (m *mergeWritingBuffer) FlushSegment() (*collections.ReferenceCounter[[]byt
 	}

 	if AppConfig.GOPCache {
+		// +1=2
 		counter.Refer()
 		m.lastKeyVideoDataSegments.Push(counter)
 	}
@@ -172,11 +175,13 @@ func (m *mergeWritingBuffer) HasVideoDataInCurrentSegment() bool {
 }

 func (m *mergeWritingBuffer) Close() *collections.Queue[*mbBuffer] {
+	// 减少关键帧切片的引用计数
 	for m.lastKeyVideoDataSegments.Size() > 0 {
 		m.lastKeyVideoDataSegments.Pop().Release()
 	}

 	if m.buffers.Size() > 0 && !release(m.buffers, m.buffers.Size()) {
+		// 还有sink在使用, 返回未释放的内存缓冲区
 		return m.buffers
 	}

--- a/stream/mwb_pool.go
+++ b/stream/mwb_pool.go
@@ -8,6 +8,8 @@ import (
 )

 const (
+	// BlockBufferSize 合并写缓冲区的内存块大小
+	// 一块缓冲区可以包含多个合并写切片
 	BlockBufferSize = 1024 * 1024 * 2
 )

@@ -23,17 +25,17 @@ var (
 		},
 	}

-	pendingReleaseBuffers = make(map[string]*collections.Queue[*mbBuffer])
+	pendingReleaseBuffers = make(map[string]*collections.Queue[*mbBuffer]) // 等待释放的合并写缓冲区
 	lock                  sync.Mutex
 )

+// AddMWBuffersToPending 添加合并写缓冲区到等待释放队列
 func AddMWBuffersToPending(sourceId string, transStreamId TransStreamID, buffers *collections.Queue[*mbBuffer]) {
 	key := fmt.Sprintf("%s-%d", sourceId, transStreamId)

 	lock.Lock()
 	defer lock.Unlock()

-	for buffers.Size() > 0 {
 	v, ok := pendingReleaseBuffers[key]
 	if ok {
 		// 第二次都推流结束了，第一次的内存还被占用
@@ -50,10 +52,13 @@ func AddMWBuffersToPending(sourceId string, transStreamId TransStreamID, buffers
 		delete(pendingReleaseBuffers, key)
 	}

+	if buffers.Size() > 0 {
 		pendingReleaseBuffers[key] = buffers
 	}
 }

+// ReleasePendingBuffers 释放等待释放的合并写缓冲区
+// 拉流结束后主动调用一次, 创建传输流的时候也调用一次
 func ReleasePendingBuffers(sourceId string, transStreamId TransStreamID) {
 	key := fmt.Sprintf("%s-%d", sourceId, transStreamId)

@@ -68,6 +73,7 @@ func ReleasePendingBuffers(sourceId string, transStreamId TransStreamID) {
 	delete(pendingReleaseBuffers, key)
 }

+// release 释放合并写缓冲区
 func release(buffers *collections.Queue[*mbBuffer], length int) bool {
 	for i := 0; i < length; i++ {
 		buffer := buffers.Peek(0)
--- a/stream/sink.go
+++ b/stream/sink.go
@@ -175,7 +175,7 @@ func (s *BaseSink) fastForward(firstSegment *collections.ReferenceCounter[[]byte

 func (s *BaseSink) doAsyncWrite() {
 	defer func() {
-		// 释放未发送的数据
+		// 释放未发送的合并写切片
 		for buffer := s.pendingSendQueue.Pop(); buffer != nil; buffer = s.pendingSendQueue.Pop() {
 			buffer.Release()
 		}
@@ -241,9 +241,12 @@ func (s *BaseSink) doAsyncWrite() {

 func (s *BaseSink) EnableAsyncWriteMode(queueSize int) {
 	utils.Assert(s.Conn != nil)
+	// 只初始化一次
+	if s.pendingSendQueue == nil {
 		s.pendingSendQueue = NewNonBlockingChannel[*collections.ReferenceCounter[[]byte]](queueSize)
 		s.cancelCtx, s.cancelFunc = context.WithCancel(context.Background())
 		go s.doAsyncWrite()
+	}
 }

 func (s *BaseSink) Write(index int, data []*collections.ReferenceCounter[[]byte], ts int64, keyVideo bool) error {
--- a/stream/source.go
+++ b/stream/source.go
@@ -80,7 +80,9 @@ type Source interface {

 	StartTimers(source Source)

-	ExecuteSyncEvent(cb func())
+	ExecuteWithStreamLock(cb func())
+
+	ExecuteWithDeleteLock(cb func())

 	UpdateReceiveStats(dataLen int)
 }
@@ -105,7 +107,8 @@ type PublishSource struct {
 	createTime     time.Time          // source创建时间
 	statistics     *BitrateStatistics // 码流统计
 	streamLogger   avformat.OnUnpackStream2FileHandler
-	streamLock     sync.Mutex // 收流、探测超时、关闭等操作互斥锁
+	streamLock     sync.Mutex // 收流、探测超时等操作互斥锁
+	deleteLock     sync.Mutex // 双重锁, 防止在关闭source时, 其他操作同时进行

 	timers struct {
 		receiveTimer *time.Timer // 收流超时计时器
@@ -157,10 +160,8 @@ func (s *PublishSource) Input(data []byte) (int, error) {
 	s.UpdateReceiveStats(len(data))
 	var n int
 	var err error
-	s.ExecuteSyncEvent(func() {
-		if s.closed.Load() {
-			err = fmt.Errorf("source closed")
-		} else {
+	s.ExecuteWithStreamLock(func() {
+		if !s.closed.Load() {
 			n, err = s.TransDemuxer.Input(data)
 		}
 	})
@@ -176,7 +177,7 @@ func (s *PublishSource) SetState(state SessionState) {
 	s.state = state
 }

-func (s *PublishSource) DoClose() {
+func (s *PublishSource) doClose() {
 	log.Sugar.Debugf("closing the %s source. id: %s. closed flag: %t", s.Type, s.ID, s.closed.Load())

 	// 已关闭, 直接返回
@@ -185,7 +186,7 @@ func (s *PublishSource) DoClose() {
 	}

 	var closed bool
-	s.ExecuteSyncEvent(func() {
+	s.ExecuteWithStreamLock(func() {
 		closed = s.closed.Swap(true)
 	})

@@ -221,21 +222,17 @@ func (s *PublishSource) DoClose() {
 	// 同步执行
 	s.streamPublisher.close()

-	// 只释放prepare成功的source, 否则在关闭失败的source时, 造成id相同的source被错误释放
-	if s.state < SessionStateTransferring {
-		return
-	}
-
 	s.state = SessionStateClosed
-	// 释放解复用器
-	// 释放转码器
-	// 释放每路转协议流， 将所有sink添加到等待队列
+
+	// 只删除被添加的source, 否则会造成id相同的source被误删
+	if s.state >= SessionStateHandshakeSuccess {
 		_, err := SourceManager.Remove(s.ID)
 		if err != nil {
 			// source不存在, 在创建source时, 未添加到manager中, 目前只有1078流会出现这种情况(tcp连接到端口, 没有推流或推流数据无效, 无法定位到手机号, 以至于无法执行PreparePublishSource函数), 将不再处理后续事情.
 			log.Sugar.Errorf("删除源失败 source: %s err: %s", s.ID, err.Error())
 			return
 		}
+	}

 	// 异步hook
 	go func() {
@@ -249,7 +246,9 @@ func (s *PublishSource) DoClose() {
 }

 func (s *PublishSource) Close() {
-	s.DoClose()
+	s.ExecuteWithDeleteLock(func() {
+		s.doClose()
+	})
 }

 // 解析完所有track后, 创建各种输出流
@@ -265,8 +264,8 @@ func (s *PublishSource) writeHeader() {

 	if len(s.originTracks.All()) == 0 {
 		log.Sugar.Errorf("没有一路track, 删除source: %s", s.ID)
-		// 异步执行ProbeTimeout函数中还没释放锁
-		go s.DoClose()
+		// 此时还持有stream lock, 异步关闭source
+		go CloseSource(s.ID)
 		return
 	}
 }
@@ -399,7 +398,7 @@ func (s *PublishSource) SetUrlValues(values url.Values) {
 	s.urlValues = values
 }

-func (s *PublishSource) ExecuteSyncEvent(cb func()) {
+func (s *PublishSource) ExecuteWithStreamLock(cb func()) {
 	// 无竞争情况下, 接近原子操作
 	s.streamLock.Lock()
 	defer s.streamLock.Unlock()
@@ -420,7 +419,7 @@ func (s *PublishSource) GetBitrateStatistics() *BitrateStatistics {

 func (s *PublishSource) ProbeTimeout() {
 	if s.TransDemuxer != nil {
-		s.ExecuteSyncEvent(func() {
+		s.ExecuteWithStreamLock(func() {
 			if !s.closed.Load() {
 				s.TransDemuxer.ProbeComplete()
 			}
@@ -454,3 +453,9 @@ func (s *PublishSource) StartTimers(source Source) {
 	})

 }
+
+func (s *PublishSource) ExecuteWithDeleteLock(cb func()) {
+	s.deleteLock.Lock()
+	defer s.deleteLock.Unlock()
+	cb()
+}
--- a/stream/source_manager.go
+++ b/stream/source_manager.go
@@ -16,7 +16,7 @@ type sourceManger struct {
 	m sync.Map
 }

-func (s *sourceManger) Add(source Source) error {
+func (s *sourceManger) add(source Source) error {
 	_, ok := s.m.LoadOrStore(source.GetID(), source)
 	if ok {
 		return fmt.Errorf("the source %s has been exist", source.GetID())
--- a/stream/source_utils.go
+++ b/stream/source_utils.go
@@ -195,6 +195,13 @@ func StartIdleTimer(source Source) *time.Timer {
 	return idleTimer
 }

+func CloseSource(id string) {
+	source := SourceManager.Find(id)
+	if source != nil {
+		source.Close()
+	}
+}
+
 // LoopEvent 循环读取事件
 func LoopEvent(source Source) {
 	source.StartTimers(source)
--- a/stream/stream_publisher.go
+++ b/stream/stream_publisher.go
@@ -341,6 +341,9 @@ func (t *transStreamPublisher) CreateTransStream(protocol TransStreamProtocol, t
 		}
 	}

+	// 尝试清空等待释放的合并写缓冲区
+	ReleasePendingBuffers(t.source, id)
+
 	t.transStreams[id] = transStream
 	// 创建输出流对应的拉流队列
 	t.transStreamSinks[id] = make(map[SinkID]Sink, 128)
@@ -700,7 +703,6 @@ func (t *transStreamPublisher) doClose() {
 	// 将所有sink添加到等待队列
 	for _, sink := range t.sinks {
 		transStreamID := sink.GetTransStreamID()
-		sink.SetTransStreamID(0)
 		if t.recordSink == sink {
 			continue
 		}
--- a/stream/stream_server.go
+++ b/stream/stream_server.go
@@ -18,8 +18,10 @@ type StreamServer[T any] struct {
 }

 func (s *StreamServer[T]) OnConnected(conn net.Conn) []byte {
-	log.Sugar.Debugf("%s连接 conn:%s", s.SourceType.String(), conn.RemoteAddr().String())
+	log.Sugar.Debugf("%s连接 conn: %s", s.SourceType.String(), conn.RemoteAddr().String())
+	if s.Handler != nil {
 		conn.(*transport.Conn).Data = s.Handler.OnNewSession(conn)
+	}
 	return nil
 }

@@ -35,7 +37,7 @@ func (s *StreamServer[T]) OnDisConnected(conn net.Conn, err error) {
 	log.Sugar.Debugf("%s断开连接 conn:%s", s.SourceType.String(), conn.RemoteAddr().String())

 	t := conn.(*transport.Conn)
-	if t.Data != nil {
+	if s.Handler != nil && t.Data != nil {
 		s.Handler.OnCloseSession(t.Data.(T))
 		t.Data = nil
 	}
--- a/stream/trans_utils.go
+++ b/stream/trans_utils.go
@@ -2,14 +2,13 @@ package stream

 import "github.com/lkmio/avformat/utils"

-// TransStreamID 每个传输流的唯一Id，根据输出流协议ID+track index生成
-// 输出流协议占低8位
-// 每个音视频编译器ID占用8位. 意味着每个输出流至多7路流.
+// TransStreamID 每个传输流的唯一Id, 根据输出流协议ID+track index生成
+// 输出流协议占低8位, track index占用8位, 最多支持7路流.
 type TransStreamID uint64

 func (id TransStreamID) HasTrack(index int) bool {
 	for i := 1; i < 8; i++ {
-		if int(id>>(i*8))&0xFF == index {
+		if (int(id>>(i*8))&0xFF)-1 == index {
 			return true
 		}
 	}
@@ -21,25 +20,6 @@ func (id TransStreamID) Protocol() TransStreamProtocol {
 	return TransStreamProtocol(id & 0xFF)
 }

-// GenerateTransStreamID 根据传入的推拉流协议和编码器ID生成StreamId
-// 请确保ids根据值升序排序传参
-/*func GenerateTransStreamID(protocol GetProtocol, ids ...utils.AVCodecID) GetTransStreamID {
-	len_ := len(ids)
-	utils.Assert(len_ > 0 && len_ < 8)
-
-	var streamId uint64
-	streamId = uint64(protocol) << 56
-
-	for i, GetID := range ids {
-		bId, ok := narrowCodecIds[int(GetID)]
-		utils.Assert(ok)
-
-		streamId |= uint64(bId) << (48 - i*8)
-	}
-
-	return GetTransStreamID(streamId)
-}*/
-
 // GenerateTransStreamID 根据输出流协议和输出流包含的音视频编码器ID生成流ID
 func GenerateTransStreamID(protocol TransStreamProtocol, tracks ...*Track) TransStreamID {
 	len_ := len(tracks)
@@ -47,7 +27,8 @@ func GenerateTransStreamID(protocol TransStreamProtocol, tracks ...*Track) Trans

 	var streamId = uint64(protocol) & 0xFF
 	for i, track := range tracks {
-		streamId |= uint64(track.Stream.Index) << ((i + 1) * 8)
+		// +1是为了避免0值
+		streamId |= uint64(track.Stream.Index+1) << ((i + 1) * 8)
 	}

 	return TransStreamID(streamId)