mirror of
https://github.com/lkmio/lkm.git
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477 lines
13 KiB
Go
477 lines
13 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"github.com/gorilla/mux"
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"github.com/gorilla/websocket"
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"github.com/lkmio/avformat/utils"
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"github.com/lkmio/lkm/flv"
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"github.com/lkmio/lkm/hls"
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"github.com/lkmio/lkm/log"
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"github.com/lkmio/lkm/rtc"
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"github.com/lkmio/lkm/stream"
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"io"
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"net"
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"net/http"
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"os"
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"runtime"
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"strconv"
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"strings"
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"sync"
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"time"
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)
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type ApiServer struct {
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upgrader *websocket.Upgrader
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router *mux.Router
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}
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var apiServer *ApiServer
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func init() {
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apiServer = &ApiServer{
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upgrader: &websocket.Upgrader{
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CheckOrigin: func(r *http.Request) bool {
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return true
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},
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},
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router: mux.NewRouter(),
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}
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}
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func filterSourceID(f func(sourceId string, w http.ResponseWriter, req *http.Request), suffix string) func(http.ResponseWriter, *http.Request) {
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return func(w http.ResponseWriter, req *http.Request) {
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source, err := stream.Path2SourceId(req.URL.Path, suffix)
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if err != nil {
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log.Sugar.Errorf("拉流失败 解析流id发生err: %s path: %s", err.Error(), req.URL.Path)
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httpResponse(w, http.StatusBadRequest, err.Error())
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return
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}
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f(source, w, req)
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}
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}
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type IDS struct {
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// 内部SinkID可能是uint64或者string类型, 但外部传参均使用string类型，程序内部自行兼容ipv6.
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Sink string `json:"sink"`
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Source string `json:"source"`
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}
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func filterRequestBodyParams[T any](f func(params T, w http.ResponseWriter, req *http.Request), params interface{}) func(http.ResponseWriter, *http.Request) {
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return func(w http.ResponseWriter, req *http.Request) {
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if err := HttpDecodeJSONBody(w, req, params); err != nil {
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log.Sugar.Errorf("处理http请求失败 err: %s path: %s", err.Error(), req.URL.Path)
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httpResponse2(w, err)
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return
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}
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f(params.(T), w, req)
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}
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}
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func startApiServer(addr string) {
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/**
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http://host:port/xxx.flv
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http://host:port/xxx.rtc
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http://host:port/xxx.m3u8
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http://host:port/xxx_0.ts
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ws://host:port/xxx.flv
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*/
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// {source}.flv和/{source}/{stream}.flv意味着, 推流id(路径)只能嵌套一层
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apiServer.router.HandleFunc("/{source}.flv", filterSourceID(apiServer.onFlv, ".flv"))
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apiServer.router.HandleFunc("/{source}/{stream}.flv", filterSourceID(apiServer.onFlv, ".flv"))
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if stream.AppConfig.Hls.Enable {
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apiServer.router.HandleFunc("/{source}.m3u8", filterSourceID(apiServer.onHLS, ".m3u8"))
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apiServer.router.HandleFunc("/{source}/{stream}.m3u8", filterSourceID(apiServer.onHLS, ".m3u8"))
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apiServer.router.HandleFunc("/{source}.ts", filterSourceID(apiServer.onTS, ".ts"))
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apiServer.router.HandleFunc("/{source}/{stream}.ts", filterSourceID(apiServer.onTS, ".ts"))
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}
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if stream.AppConfig.WebRtc.Enable {
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apiServer.router.HandleFunc("/{source}.rtc", filterSourceID(apiServer.onRtc, ".rtc"))
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apiServer.router.HandleFunc("/{source}/{stream}.rtc", filterSourceID(apiServer.onRtc, ".rtc"))
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}
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apiServer.router.HandleFunc("/api/v1/source/list", apiServer.OnSourceList) // 查询所有推流源
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apiServer.router.HandleFunc("/api/v1/source/close", filterRequestBodyParams(apiServer.OnSourceClose, &IDS{})) // 关闭推流源
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apiServer.router.HandleFunc("/api/v1/sink/list", filterRequestBodyParams(apiServer.OnSinkList, &IDS{})) // 查询某个推流源下，所有的拉流端列表
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apiServer.router.HandleFunc("/api/v1/sink/close", filterRequestBodyParams(apiServer.OnSinkClose, &IDS{})) // 关闭拉流端
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apiServer.router.HandleFunc("/api/v1/streams/statistics", nil) // 统计所有推拉流
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apiServer.router.HandleFunc("/api/v1/gb28181/forward", filterRequestBodyParams(apiServer.OnGBSourceForward, &GBForwardParams{})) // 设置级联转发目标，停止级联调用sink/close接口，级联断开会走on_play_done事件通知
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apiServer.router.HandleFunc("/api/v1/gb28181/source/create", filterRequestBodyParams(apiServer.OnGBSourceCreate, &GBSourceParams{})) // 创建国标推流源
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apiServer.router.HandleFunc("/api/v1/gb28181/source/connect", filterRequestBodyParams(apiServer.OnGBSourceConnect, &GBConnect{})) // 为国标TCP主动推流，设置连接地址
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apiServer.router.HandleFunc("/api/v1/gc/force", func(writer http.ResponseWriter, request *http.Request) {
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runtime.GC()
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writer.WriteHeader(http.StatusOK)
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})
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apiServer.router.HandleFunc("/rtc.html", func(writer http.ResponseWriter, request *http.Request) {
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http.ServeFile(writer, request, "./rtc.html")
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})
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http.Handle("/", apiServer.router)
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srv := &http.Server{
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Handler: apiServer.router,
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Addr: addr,
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// Good practice: enforce timeouts for servers you create!
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WriteTimeout: 30 * time.Second,
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ReadTimeout: 30 * time.Second,
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}
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err := srv.ListenAndServe()
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if err != nil {
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panic(err)
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}
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}
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func (api *ApiServer) generateSinkId(remoteAddr string) stream.SinkID {
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tcpAddr, err := net.ResolveTCPAddr("tcp", remoteAddr)
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if err != nil {
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panic(err)
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}
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return stream.NetAddr2SinkId(tcpAddr)
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}
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func (api *ApiServer) onFlv(sourceId string, w http.ResponseWriter, r *http.Request) {
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// 区分ws请求
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ws := true
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if !("upgrade" == strings.ToLower(r.Header.Get("Connection"))) {
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ws = false
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} else if !("websocket" == strings.ToLower(r.Header.Get("Upgrade"))) {
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ws = false
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} else if !("13" == r.Header.Get("Sec-Websocket-Version")) {
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ws = false
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}
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if ws {
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apiServer.onWSFlv(sourceId, w, r)
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} else {
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apiServer.onHttpFLV(sourceId, w, r)
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}
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}
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func (api *ApiServer) onWSFlv(sourceId string, w http.ResponseWriter, r *http.Request) {
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conn, err := api.upgrader.Upgrade(w, r, nil)
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if err != nil {
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log.Sugar.Errorf("websocket头检查失败 err:%s", err.Error())
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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sink := flv.NewFLVSink(api.generateSinkId(r.RemoteAddr), sourceId, flv.NewWSConn(conn))
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sink.SetUrlValues(r.URL.Query())
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log.Sugar.Infof("ws-flv 连接 sink:%s", sink.String())
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_, state := stream.PreparePlaySink(sink)
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if utils.HookStateOK != state {
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log.Sugar.Warnf("ws-flv 播放失败 sink:%s", sink.String())
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w.WriteHeader(http.StatusForbidden)
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return
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}
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netConn := conn.NetConn()
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bytes := make([]byte, 64)
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for {
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if _, err := netConn.Read(bytes); err != nil {
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log.Sugar.Infof("ws-flv 断开连接 sink:%s", sink.String())
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sink.Close()
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break
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}
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}
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}
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func (api *ApiServer) onHttpFLV(sourceId string, w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "video/x-flv")
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w.Header().Set("Connection", "Keep-Alive")
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w.Header().Set("Transfer-Encoding", "chunked")
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hj, ok := w.(http.Hijacker)
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if !ok {
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http.Error(w, "webserver doesn't support hijacking", http.StatusInternalServerError)
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return
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}
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w.WriteHeader(http.StatusOK)
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conn, _, err := hj.Hijack()
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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sink := flv.NewFLVSink(api.generateSinkId(r.RemoteAddr), sourceId, conn)
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sink.SetUrlValues(r.URL.Query())
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log.Sugar.Infof("http-flv 连接 sink:%s", sink.String())
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_, state := stream.PreparePlaySink(sink)
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if utils.HookStateOK != state {
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log.Sugar.Warnf("http-flv 播放失败 sink:%s", sink.String())
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w.WriteHeader(http.StatusForbidden)
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return
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}
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bytes := make([]byte, 64)
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for {
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if _, err := conn.Read(bytes); err != nil {
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log.Sugar.Infof("http-flv 断开连接 sink:%s", sink.String())
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sink.Close()
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break
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}
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}
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}
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func (api *ApiServer) onTS(source string, w http.ResponseWriter, r *http.Request) {
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if !stream.AppConfig.Hls.Enable {
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log.Sugar.Warnf("处理m3u8请求失败 server未开启hls request:%s", r.URL.Path)
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http.Error(w, "hls disable", http.StatusInternalServerError)
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return
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}
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sid := r.URL.Query().Get(hls.SessionIdKey)
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var sink stream.Sink
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if sid != "" {
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sink = stream.SinkManager.Find(stream.SinkID(sid))
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}
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if sink == nil {
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log.Sugar.Errorf("hls session with id '%s' has expired.", sid)
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w.WriteHeader(http.StatusForbidden)
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return
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}
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index := strings.LastIndex(source, "_")
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if index < 0 || index == len(source)-1 {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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seq := source[index+1:]
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tsPath := stream.AppConfig.Hls.TSPath(sink.GetSourceID(), seq)
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if _, err := os.Stat(tsPath); err != nil {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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sink.(*hls.M3U8Sink).RefreshPlayTime()
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w.Header().Set("Content-Type", "video/MP2T")
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http.ServeFile(w, r, tsPath)
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}
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func (api *ApiServer) onHLS(sourceId string, w http.ResponseWriter, r *http.Request) {
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if !stream.AppConfig.Hls.Enable {
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log.Sugar.Warnf("处理hls请求失败 server未开启hls")
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http.Error(w, "hls disable", http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", "application/vnd.apple.mpegurl")
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//hls_sid是流媒体服务器让播放端, 携带的会话id, 如果没有携带说明是第一次请求播放.
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//播放端不要使用hls_sid这个key, 否则会一直拉流失败
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sid := r.URL.Query().Get(hls.SessionIdKey)
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if sid == "" {
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//让播放端携带会话id
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sid = utils.RandStringBytes(10)
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query := r.URL.Query()
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query.Add(hls.SessionIdKey, sid)
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path := fmt.Sprintf("/%s.m3u8?%s", sourceId, query.Encode())
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response := "#EXTM3U\r\n" +
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"#EXT-X-STREAM-INF:BANDWIDTH=1,AVERAGE-BANDWIDTH=1\r\n" +
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path + "\r\n"
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w.Write([]byte(response))
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return
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}
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sink := stream.SinkManager.Find(sid)
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if sink != nil {
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w.Write([]byte(sink.(*hls.M3U8Sink).GetM3U8String()))
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return
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}
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context := r.Context()
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done := make(chan int, 0)
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sink = hls.NewM3U8Sink(sid, sourceId, func(m3u8 []byte) {
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w.Write(m3u8)
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done <- 0
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}, sid)
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sink.SetUrlValues(r.URL.Query())
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_, state := stream.PreparePlaySink(sink)
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if utils.HookStateOK != state {
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log.Sugar.Warnf("m3u8 请求失败 sink:%s", sink.String())
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w.WriteHeader(http.StatusForbidden)
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return
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} else {
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err := stream.SinkManager.Add(sink)
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utils.Assert(err == nil)
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}
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select {
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case <-done:
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case <-context.Done():
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break
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}
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}
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func (api *ApiServer) onRtc(sourceId string, w http.ResponseWriter, r *http.Request) {
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v := struct {
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Type string `json:"type"`
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SDP string `json:"sdp"`
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}{}
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data, err := io.ReadAll(r.Body)
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if err != nil {
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log.Sugar.Errorf("rtc请求错误 err:%s remote:%s", err.Error(), r.RemoteAddr)
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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} else if err := json.Unmarshal(data, &v); err != nil {
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log.Sugar.Errorf("rtc请求错误 err:%s remote:%s", err.Error(), r.RemoteAddr)
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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group := sync.WaitGroup{}
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group.Add(1)
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sink := rtc.NewSink(api.generateSinkId(r.RemoteAddr), sourceId, v.SDP, func(sdp string) {
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response := struct {
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Type string `json:"type"`
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SDP string `json:"sdp"`
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}{
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Type: "answer",
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SDP: sdp,
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}
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marshal, err := json.Marshal(response)
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if err != nil {
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panic(err)
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}
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w.Header().Set("Content-Type", "application/json")
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w.Write(marshal)
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group.Done()
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})
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sink.SetUrlValues(r.URL.Query())
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log.Sugar.Infof("rtc 请求 sink:%s sdp:%v", sink.String(), v.SDP)
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_, state := stream.PreparePlaySink(sink)
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if utils.HookStateOK != state {
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log.Sugar.Warnf("rtc 播放失败 sink:%s", sink.String())
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w.WriteHeader(http.StatusForbidden)
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group.Done()
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}
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group.Wait()
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}
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func (api *ApiServer) OnSourceList(w http.ResponseWriter, r *http.Request) {
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sources := stream.SourceManager.All()
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type SourceDetails struct {
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ID string `json:"id"`
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Protocol string `json:"protocol"` // 推流协议
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Time time.Time `json:"time"` // 推流时间
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SinkCount int `json:"sink_count"` // 播放端计数
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Bitrate string `json:"bitrate"` // 码率统计
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Tracks []string `json:"tracks"` // 每路流编码器ID
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}
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var details []SourceDetails
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for _, source := range sources {
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var tracks []string
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streams := source.OriginStreams()
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for _, avStream := range streams {
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tracks = append(tracks, avStream.CodecId().String())
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}
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details = append(details, SourceDetails{
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ID: source.GetID(),
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Protocol: source.GetType().String(),
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Time: source.CreateTime(),
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SinkCount: source.SinkCount(),
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Bitrate: "", // 后续开发
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Tracks: tracks,
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})
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}
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httpResponseOK(w, details)
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}
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func (api *ApiServer) OnSinkList(v *IDS, w http.ResponseWriter, r *http.Request) {
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source := stream.SourceManager.Find(v.Source)
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if source == nil {
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httpResponseOK(w, nil)
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return
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}
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type SinkDetails struct {
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ID string `json:"id"`
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Protocol string `json:"protocol"` // 拉流协议
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Time time.Time `json:"time"` // 拉流时间
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Bitrate string `json:"bitrate"` // 码率统计
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Tracks []string `json:"tracks"` // 每路流编码器ID
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}
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var details []SinkDetails
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sinks := source.Sinks()
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for _, sink := range sinks {
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details = append(details,
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SinkDetails{
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ID: stream.SinkId2String(sink.GetID()),
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Protocol: sink.GetProtocol().String(),
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Time: sink.CreateTime(),
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},
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)
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}
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httpResponseOK(w, details)
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}
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func (api *ApiServer) OnSourceClose(v *IDS, w http.ResponseWriter, r *http.Request) {
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log.Sugar.Infof("close source: %v", v)
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if source := stream.SourceManager.Find(v.Source); source != nil {
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source.Close()
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} else {
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log.Sugar.Warnf("Source with ID %s does not exist.", v.Source)
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}
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httpResponseOK(w, nil)
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}
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func (api *ApiServer) OnSinkClose(v *IDS, w http.ResponseWriter, r *http.Request) {
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log.Sugar.Infof("close sink: %v", v)
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var sinkId stream.SinkID
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i, err := strconv.ParseUint(v.Sink, 10, 64)
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if err != nil {
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sinkId = stream.SinkID(v.Sink)
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} else {
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sinkId = stream.SinkID(i)
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}
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if source := stream.SourceManager.Find(v.Source); source != nil {
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if sink := source.FindSink(sinkId); sink != nil {
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sink.Close()
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}
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} else {
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log.Sugar.Warnf("Source with ID %s does not exist.", v.Source)
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}
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||
|
||
httpResponseOK(w, nil)
|
||
}
|