├── .gitignore ├── README.md ├── encryptor └── cryptor.go ├── errorHandler └── CheckError.go ├── ffmpeg ├── config.go ├── ffmpeg.go └── playlist.go ├── go.mod ├── go.sum ├── main.go ├── rtp-forwarder.sdp ├── signal └── http.go ├── structs ├── offer.go └── response.go └── webrtc └── webrtc.go /.gitignore: -------------------------------------------------------------------------------- 1 | /vid -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # This server accepts video and audio via webrtc and converts them in Adaptive HLS 2 | This project is in Progress(ui,cdn integration), `Webrtc -> HLS` part is Complete. 3 | 4 | ### Steps for running this Server (I recommend using [local-testing](https://github.com/mohit810/streamingcdn/tree/local-testing) branch) 5 | 6 | #### Steps to follow for using this project 7 | 1) Install or upgrade Golang ver. 1.15 or above 8 | 2) Install or upgrade Ffmpeg ver. 4.3.1-5(available in `Debian Sid`) and windows ffmpeg v4.3 9 | 3) Download the project using Git command `git clone https://github.com/mohit810/streamingcdn` 10 | 4) To start the server open the new folder created by Git and use the command `go run main.go` (Use terminal for running the server) 11 | 12 | * Congratulations!! Now the server is up and running. 13 | * As a starting point for testing you can use the [Web UI](https://github.com/mohit810/streamingcdn-web-ui) 14 | 15 | ### Current State 16 | 1) Users can connect via `POST` request and start streaming(1.5Mbps speed is hardcoded for the stream). 17 | 2) The Server recieves the stream and converts it into HLS. 18 | 3) [Native Android-UI](https://github.com/mohit810/android-webrtc) 19 | 4) [Web UI](https://github.com/mohit810/streamingcdn-web-ui) 20 | 21 | ### Currently in Development 22 | 1) Integrating FFmpeg.(Completed for now, further optimization will be done later) 23 | 2) Allowing multiple users to connect and start broadcasting.(not in priority, at this stage.) 24 | 3) CDN Integration ( Post UI development) 25 | 4) Front-end UI Development in ios. 26 | 27 | ### Final Goal 28 | To receive the broadcast, Convert it into hls in various quality then push those to cdn to serve to the User. 29 | 30 | Before using this solution you should set-up pion/webrtc/v3 ([Go Modules](https://blog.golang.org/using-go-modules) are mandatory for using Pion WebRTC. So make sure you set export GO111MODULE=on, and explicitly specify /v3 when importing.). 31 | 32 | ### POST API used by the broadcaster for connecting to the server 33 | 34 | `{ 35 | "sdp":"", 36 | "streamKey":"" 37 | }` 38 | 39 | * Playlists and all the `.ts` files are served at `/watch/streamkey/` (here streamKey is the string that the broadcaster sends in the `POST` request when connecting to the server) 40 | 41 | ## Big Thanks to the following 42 | 43 | * [Sean Der](https://github.com/Sean-Der) at [Poin/webrtc](https://github.com/pion/webrtc) 44 | * [Harrison](https://github.com/grantfayvor) 45 | * [julienschmidt/httprouter](https://github.com/julienschmidt/httprouter) 46 | -------------------------------------------------------------------------------- /encryptor/cryptor.go: -------------------------------------------------------------------------------- 1 | package encryptor 2 | 3 | import ( 4 | "encoding/base64" 5 | "encoding/json" 6 | ) 7 | 8 | // Encode encodes the input in base64 9 | // It can optionally zip the input before encoding 10 | func Encode(obj interface{}) string { 11 | b, err := json.Marshal(obj) 12 | if err != nil { 13 | panic(err) 14 | } 15 | 16 | return base64.StdEncoding.EncodeToString(b) 17 | } 18 | 19 | // It can optionally unzip the input after decoding 20 | func Decode(in string, obj interface{}) { 21 | b, err := base64.StdEncoding.DecodeString(in) 22 | if err != nil { 23 | panic(err) 24 | } 25 | 26 | /*if compress { 27 | b = unzip(b) 28 | }*/ 29 | 30 | err = json.Unmarshal(b, obj) 31 | if err != nil { 32 | panic(err) 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /errorHandler/CheckError.go: -------------------------------------------------------------------------------- 1 | package errorHandler 2 | 3 | func CheckError(err error) { 4 | if err != nil { 5 | panic(err) 6 | } 7 | } 8 | -------------------------------------------------------------------------------- /ffmpeg/config.go: -------------------------------------------------------------------------------- 1 | package ffmpeg 2 | 3 | import "errors" 4 | 5 | type config struct { 6 | Name string 7 | VideoBitrate string 8 | Maxrate string 9 | BufSize string 10 | AudioBitrate string 11 | Resolution string 12 | Bandwidth string 13 | PlaylistName string 14 | } 15 | 16 | var preset = map[string]*config{ 17 | "360p": { 18 | Name: "360p", 19 | VideoBitrate: "800k", 20 | Maxrate: "856k", 21 | BufSize: "1200k", 22 | AudioBitrate: "96k", 23 | Resolution: "640x360", 24 | Bandwidth: "800000", 25 | PlaylistName: "quality_0", 26 | }, 27 | "480p": { 28 | Name: "480p", 29 | VideoBitrate: "1400k", 30 | Maxrate: "1498k", 31 | BufSize: "2100k", 32 | AudioBitrate: "128k", 33 | Resolution: "842x480", 34 | Bandwidth: "1400000", 35 | PlaylistName: "quality_1", 36 | }, 37 | "720p": { 38 | Name: "720p", 39 | VideoBitrate: "2800k", 40 | Maxrate: "2996k", 41 | BufSize: "4200k", 42 | AudioBitrate: "128k", 43 | Resolution: "1280x720", 44 | Bandwidth: "2800000", 45 | PlaylistName: "quality_2", 46 | }, 47 | "1080p": { 48 | Name: "1080p", 49 | VideoBitrate: "5000k", 50 | Maxrate: "5350k", 51 | BufSize: "7500k", 52 | AudioBitrate: "192k", 53 | Resolution: "1920x1080", 54 | Bandwidth: "5000000", 55 | PlaylistName: "quality_3", 56 | }, 57 | } 58 | 59 | // getConfig return config from the available preset 60 | func getConfig(res string) (*config, error) { 61 | cfg, ok := preset[res] 62 | if !ok { 63 | return nil, errors.New("Preset not found") 64 | } 65 | 66 | return cfg, nil 67 | } 68 | -------------------------------------------------------------------------------- /ffmpeg/ffmpeg.go: -------------------------------------------------------------------------------- 1 | package ffmpeg 2 | 3 | import ( 4 | "bufio" 5 | "context" 6 | "fmt" 7 | "log" 8 | "os" 9 | "os/exec" 10 | ) 11 | 12 | func StartFFmpeg(ctx context.Context, streamKey string) { 13 | goDir, _ := os.Getwd() 14 | errDir := os.MkdirAll("vid"+"/"+streamKey, 0755) 15 | if errDir != nil { 16 | log.Fatal(errDir) 17 | } 18 | targetPath := goDir + "/vid/" + streamKey 19 | resOptions := []string{"360p", "480p", "720p", "1080p"} 20 | 21 | variants, _ := generateHLSVariant(resOptions, "") 22 | generatePlaylist(variants, targetPath, "") 23 | // Create a ffmpeg process that consumes MKV via stdin, and broadcasts out to Stream URL 24 | //CURRENTLY THIS IS FFMPEG PROCESS RUNS ON CPU NOT ON GPU 25 | ffmpeg := exec.CommandContext(ctx, "ffmpeg", "-protocol_whitelist", "file,udp,rtp", "-i", "rtp-forwarder.sdp", "-map", "0:v:0", "-map", "0:a:0", "-map", "0:v:0", "-map", "0:a:0", "-map", "0:v:0", "-map", "0:a:0", "-map", "0:v:0", "-map", "0:a:0", "-c:v", "h264", "-profile:v", "main", "-pix_fmt", "yuv420p", "-preset", "faster", "-crf", "20", "-sc_threshold", "0", "-g", "48", "-keyint_min", "48", "-c:a", "aac", "-ac", "2", "-ar", "48000", "-filter:v:0", "scale=w=640:h=360:force_original_aspect_ratio=decrease", "-maxrate:v:0", "856k", "-bufsize:v:0", "1200k", "-b:v:0", "800k", "-b:a:0", "96k", "-filter:v:1", "scale=w=842:h=480:force_original_aspect_ratio=decrease", "-maxrate:v:1", "1498k", "-bufsize:v:1", "2100k", "-b:v:1", "1400k", "-b:a:1", "128k", "-filter:v:2", "scale=w=1280:h=720:force_original_aspect_ratio=decrease", "-maxrate:v:2", "2996k", "-bufsize:v:2", "4200k", "-b:v:2", "2800k", "-b:a:2", "128k", "-filter:v:3", "scale=w=1920:h=1080:force_original_aspect_ratio=decrease", "-maxrate:v:3", "5350k", "-bufsize:v:3", "7500k", "-b:v:3", "5000k", "-b:a:3", "192k", "-var_stream_map", "v:0,a:0 v:1,a:1 v:2,a:2 v:3,a:3", "-hls_time", "4", "-hls_playlist_type", "event", "-hls_segment_filename", targetPath+"/"+"video_%v_%03d.ts", targetPath+"/"+"quality_%v.m3u8") //not creating master and different resolution playlist 26 | ffmpegOut, _ := ffmpeg.StderrPipe() 27 | if err := ffmpeg.Start(); err != nil { 28 | panic(err) 29 | } 30 | 31 | go func() { 32 | scanner := bufio.NewScanner(ffmpegOut) 33 | for scanner.Scan() { 34 | fmt.Println(scanner.Text()) 35 | if ctx.Err() == context.Canceled { 36 | break 37 | } 38 | } 39 | }() 40 | } 41 | -------------------------------------------------------------------------------- /ffmpeg/playlist.go: -------------------------------------------------------------------------------- 1 | package ffmpeg 2 | 3 | import ( 4 | "errors" 5 | "fmt" 6 | "os" 7 | "path/filepath" 8 | ) 9 | 10 | // Variant is HLS variant that gonna be use to generate HLS master playlist 11 | type Variant struct { 12 | // URL indicate the location of the variant playlist. 13 | // If variant located on remote server, this url should 14 | // contain the full url 15 | URL string 16 | 17 | // Bandwidth is an integer that is the upper bound of 18 | // the overall bitrate for each media file, in bits per second 19 | Bandwidth string 20 | 21 | // Resolution is display size, in pixels, at which to display 22 | // all of the video in the playlist 23 | Resolution string 24 | 25 | // Codecs is quoted string containing a comma-separated list of formats, 26 | // where each format specifies a media sample type that's present 27 | // in a media segment in the playlist file. Valid format identifiers are 28 | // those in the ISO file format name space defined by RFC 6381 29 | Codecs string 30 | } 31 | 32 | // GenerateHLSVariant will generate variants info from the given resolutions. 33 | // The available resolutions are: 360p, 480p, 720p and 1080p. 34 | func generateHLSVariant(resOptions []string, locPrefix string) ([]*Variant, error) { 35 | if len(resOptions) == 0 { 36 | return nil, errors.New("Please give at least 1 resolutions.") 37 | } 38 | 39 | var variants []*Variant 40 | 41 | for _, r := range resOptions { 42 | c, err := getConfig(r) 43 | if err != nil { 44 | continue 45 | } 46 | 47 | url := fmt.Sprintf("%s.m3u8", c.PlaylistName) 48 | if locPrefix != "" { 49 | url = locPrefix + "/" + url 50 | } 51 | 52 | v := &Variant{ 53 | URL: url, 54 | Bandwidth: c.Bandwidth, 55 | Resolution: c.Resolution, 56 | } 57 | 58 | variants = append(variants, v) 59 | } 60 | 61 | if len(variants) == 0 { 62 | return nil, errors.New("No valid resolutions found.") 63 | } 64 | 65 | return variants, nil 66 | } 67 | 68 | // GeneratePlaylist will generate playlist file from the given variants. 69 | // Variant itself can be generate from GenerateHLSVariant() function of 70 | // suplied by the caller 71 | func generatePlaylist(variants []*Variant, targetPath, filename string) { 72 | // Set default filename 73 | if filename == "" { 74 | filename = "playlist.m3u8" 75 | } 76 | 77 | // M3U Header 78 | data := "#EXTM3U\n" 79 | data += "#EXT-X-VERSION:3\n" 80 | 81 | // Add M3U Info for each variant 82 | for _, v := range variants { 83 | // URL & bandwidth is required, 84 | // if not found we will excluded them from the playlist 85 | if v.URL == "" || v.Bandwidth == "" { 86 | continue 87 | } 88 | 89 | data += "#EXT-X-STREAM-INF:" 90 | data += fmt.Sprintf("BANDWIDTH=%s", v.Bandwidth) 91 | if v.Resolution != "" { 92 | data += fmt.Sprintf(",RESOLUTION=%s", v.Resolution) 93 | } 94 | if v.Codecs != "" { 95 | data += fmt.Sprintf(",CODECS=%s", v.Codecs) 96 | } 97 | 98 | data += fmt.Sprintf("\n%s\n", v.URL) 99 | } 100 | 101 | // Write everything to the file 102 | f, _ := os.Create(filepath.Join(targetPath, filename)) 103 | defer f.Close() 104 | 105 | f.Write([]byte(data)) 106 | } 107 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/mohit810/streamingcdn 2 | 3 | go 1.15 4 | 5 | require ( 6 | github.com/julienschmidt/httprouter v1.3.0 7 | github.com/pion/dtls/v2 v2.0.3 8 | github.com/pion/rtcp v1.2.4 9 | github.com/pion/webrtc/v3 v3.0.0-beta.13 10 | ) 11 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 2 | cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 3 | cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 4 | cloud.google.com/go v0.37.0/go.mod h1:TS1dMSSfndXH133OKGwekG838Om/cQT0BUHV3HcBgoo= 5 | dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3/go.mod h1:Yl+fi1br7+Rr3LqpNJf1/uxUdtRUV+Tnj0o93V2B9MU= 6 | dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU= 7 | dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1:a1inKt/atXimZ4Mv927x+r7UpyzRUf4emIoiiSC2TN4= 8 | dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU= 9 | git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg= 10 | github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= 11 | github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod 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golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= 269 | golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= 270 | golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs= 271 | golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk= 272 | golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ= 273 | golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= 274 | golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= 275 | golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 276 | golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 277 | golang.org/x/tools v0.0.0-20181030000716-a0a13e073c7b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 278 | golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 279 | golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY= 280 | golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs= 281 | golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q= 282 | golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= 283 | golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE= 284 | golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= 285 | google.golang.org/api v0.0.0-20180910000450-7ca32eb868bf/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0= 286 | google.golang.org/api v0.0.0-20181030000543-1d582fd0359e/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0= 287 | google.golang.org/api v0.1.0/go.mod h1:UGEZY7KEX120AnNLIHFMKIo4obdJhkp2tPbaPlQx13Y= 288 | google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM= 289 | google.golang.org/appengine v1.2.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 290 | google.golang.org/appengine v1.3.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 291 | google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 292 | google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 293 | google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 294 | google.golang.org/genproto v0.0.0-20181029155118-b69ba1387ce2/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 295 | google.golang.org/genproto v0.0.0-20181202183823-bd91e49a0898/go.mod h1:7Ep/1NZk928CDR8SjdVbjWNpdIf6nzjE3BTgJDr2Atg= 296 | google.golang.org/genproto v0.0.0-20190306203927-b5d61aea6440/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 297 | google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 298 | google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw= 299 | google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio= 300 | google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs= 301 | google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c= 302 | google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38= 303 | google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8= 304 | google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod 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h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 314 | gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys= 315 | gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw= 316 | gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ= 317 | gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= 318 | gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 319 | gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 320 | gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 321 | gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU= 322 | gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 323 | gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo= 324 | gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 325 | grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o= 326 | honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 327 | honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 328 | honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 329 | rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0= 330 | rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA= 331 | sourcegraph.com/sourcegraph/go-diff v0.5.0/go.mod h1:kuch7UrkMzY0X+p9CRK03kfuPQ2zzQcaEFbx8wA8rck= 332 | sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0= 333 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "flag" 5 | "log" 6 | "net/http" 7 | "strconv" 8 | 9 | "github.com/julienschmidt/httprouter" 10 | "github.com/mohit810/streamingcdn/signal" 11 | ) 12 | 13 | func main() { 14 | port := flag.Int("port", 8080, "http server port") 15 | flag.Parse() 16 | r := httprouter.New() 17 | signal.HTTPSDPServer(r) 18 | log.Println("Server is Up and Running at Port:" + strconv.Itoa(*port)) 19 | panic(http.ListenAndServe(":"+strconv.Itoa(*port), r)) 20 | } 21 | -------------------------------------------------------------------------------- /rtp-forwarder.sdp: -------------------------------------------------------------------------------- 1 | v=0 2 | o=- 0 0 IN IP4 127.0.0.1 3 | s=Pion WebRTC 4 | c=IN IP4 127.0.0.1 5 | t=0 0 6 | m=audio 4000 RTP/AVP 111 7 | a=rtpmap:111 OPUS/48000/2 8 | m=video 4002 RTP/AVP 102 9 | a=rtpmap:102 H264/90000 -------------------------------------------------------------------------------- /signal/http.go: -------------------------------------------------------------------------------- 1 | package signal 2 | 3 | import ( 4 | "encoding/json" 5 | "net/http" 6 | 7 | "github.com/julienschmidt/httprouter" 8 | "github.com/mohit810/streamingcdn/encryptor" 9 | "github.com/mohit810/streamingcdn/structs" 10 | "github.com/mohit810/streamingcdn/webrtc" 11 | "github.com/pion/dtls/v2/examples/util" 12 | ) 13 | 14 | // HTTPSDPServer starts a HTTP Server that consumes SDPs 15 | func HTTPSDPServer(r *httprouter.Router) { 16 | 17 | r.ServeFiles("/watch/*filepath", http.Dir("vid")) 18 | r.POST("/sdp", func(w http.ResponseWriter, r *http.Request, p httprouter.Params) { 19 | var offer structs.Offer 20 | err := json.NewDecoder(r.Body).Decode(&offer) 21 | util.Check(err) 22 | answer, err := webrtc.CreateWebRTCConnection(offer.Sdp, offer.StreamKey) 23 | if err != nil { 24 | http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) 25 | return 26 | } 27 | c := new(structs.Response) 28 | c.Sdp = encryptor.Encode(answer) 29 | w.Header().Set("Content-Type", "application/json") 30 | w.WriteHeader(http.StatusCreated) // 201 31 | err = json.NewEncoder(w).Encode(c) 32 | util.Check(err) 33 | }) 34 | } 35 | -------------------------------------------------------------------------------- /structs/offer.go: -------------------------------------------------------------------------------- 1 | package structs 2 | 3 | type Offer struct { 4 | Sdp string `json:"sdp"` 5 | StreamKey string `json:"streamKey"` 6 | } 7 | -------------------------------------------------------------------------------- /structs/response.go: -------------------------------------------------------------------------------- 1 | package structs 2 | 3 | type Response struct { 4 | Sdp string `json:"sdp"` 5 | } 6 | -------------------------------------------------------------------------------- /webrtc/webrtc.go: -------------------------------------------------------------------------------- 1 | package webrtc 2 | 3 | import ( 4 | "context" 5 | "fmt" 6 | "github.com/mohit810/streamingcdn/ffmpeg" 7 | "net" 8 | "time" 9 | 10 | "github.com/mohit810/streamingcdn/encryptor" 11 | "github.com/pion/rtcp" 12 | "github.com/pion/webrtc/v3" 13 | ) 14 | 15 | type udpConn struct { 16 | conn *net.UDPConn 17 | port int 18 | } 19 | 20 | // CreateWebRTCConnection function 21 | func CreateWebRTCConnection(offerStr, streamKey string) (answer webrtc.SessionDescription, err error) { 22 | 23 | defer func() { 24 | if e, ok := recover().(error); ok { 25 | err = e 26 | } 27 | }() 28 | 29 | // Create a MediaEngine object to configure the supported codec 30 | m := webrtc.MediaEngine{} 31 | 32 | // Setup the codecs you want to use. 33 | if err := m.RegisterCodec(webrtc.RTPCodecParameters{ 34 | RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: "video/h264", ClockRate: 90000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: nil}, 35 | PayloadType: 102, 36 | }, webrtc.RTPCodecTypeVideo); err != nil { 37 | panic(err) 38 | } 39 | if err := m.RegisterCodec(webrtc.RTPCodecParameters{ 40 | RTPCodecCapability: webrtc.RTPCodecCapability{MimeType: "audio/opus", ClockRate: 48000, Channels: 0, SDPFmtpLine: "", RTCPFeedback: nil}, 41 | PayloadType: 111, 42 | }, webrtc.RTPCodecTypeAudio); err != nil { 43 | panic(err) 44 | } 45 | 46 | // Create the API object with the MediaEngine 47 | api := webrtc.NewAPI(webrtc.WithMediaEngine(&m)) 48 | 49 | // Prepare the configuration 50 | config := webrtc.Configuration{ 51 | ICEServers: []webrtc.ICEServer{ 52 | { 53 | URLs: []string{"stun:stun.l.google.com:19302"}, 54 | }, 55 | }, 56 | } 57 | 58 | // Create a new RTCPeerConnection 59 | peerConnection, err := api.NewPeerConnection(config) 60 | if err != nil { 61 | panic(err) 62 | } 63 | 64 | // Allow us to receive 1 audio track, and 1 video track 65 | if _, err = peerConnection.AddTransceiverFromKind(webrtc.RTPCodecTypeAudio); err != nil { 66 | panic(err) 67 | } else if _, err = peerConnection.AddTransceiverFromKind(webrtc.RTPCodecTypeVideo); err != nil { 68 | panic(err) 69 | } 70 | 71 | go func(peerConnection *webrtc.PeerConnection) { 72 | // Create context 73 | ctx, cancel := context.WithCancel(context.Background()) 74 | 75 | // Create a local addr 76 | var laddr *net.UDPAddr 77 | if laddr, err = net.ResolveUDPAddr("udp", "127.0.0.1:"); err != nil { 78 | fmt.Println(err) 79 | cancel() 80 | } 81 | 82 | // Prepare udp conns 83 | udpConns := map[string]*udpConn{ 84 | "audio": {port: 4000}, 85 | "video": {port: 4002}, 86 | } 87 | for _, c := range udpConns { 88 | // Create remote addr 89 | var raddr *net.UDPAddr 90 | if raddr, err = net.ResolveUDPAddr("udp", fmt.Sprintf("127.0.0.1:%d", c.port)); err != nil { 91 | fmt.Println(err) 92 | cancel() 93 | } 94 | 95 | // Dial udp 96 | if c.conn, err = net.DialUDP("udp", laddr, raddr); err != nil { 97 | fmt.Println(err) 98 | cancel() 99 | } 100 | defer func(conn net.PacketConn) { 101 | if closeErr := conn.Close(); closeErr != nil { 102 | fmt.Println(closeErr) 103 | } 104 | }(c.conn) 105 | } 106 | 107 | ffmpeg.StartFFmpeg(ctx, streamKey) 108 | 109 | // Set a handler for when a new remote track starts, this handler will forward data to 110 | // our UDP listeners. 111 | // In your application this is where you would handle/process audio/video 112 | peerConnection.OnTrack(func(track *webrtc.TrackRemote, receiver *webrtc.RTPReceiver) { 113 | fmt.Println("on track called") 114 | 115 | // Retrieve udp connection 116 | c, ok := udpConns[track.Kind().String()] 117 | if !ok { 118 | return 119 | } 120 | 121 | // Send a PLI on an interval so that the publisher is pushing a keyframe every rtcpPLIInterval 122 | go func() { 123 | ticker := time.NewTicker(time.Second * 2) 124 | for range ticker.C { 125 | if rtcpErr := peerConnection.WriteRTCP([]rtcp.Packet{&rtcp.PictureLossIndication{MediaSSRC: uint32(track.SSRC())}}); rtcpErr != nil { 126 | fmt.Println(rtcpErr) 127 | } 128 | if rtcpSendErr := peerConnection.WriteRTCP([]rtcp.Packet{&rtcp.ReceiverEstimatedMaximumBitrate{Bitrate: 1500000, SenderSSRC: uint32(track.SSRC())}}); rtcpSendErr != nil { 129 | fmt.Println(rtcpSendErr) 130 | } 131 | if ctx.Err() == context.Canceled { 132 | break 133 | } 134 | } 135 | }() 136 | 137 | b := make([]byte, 1500) 138 | for { 139 | var writeCount, readCount int 140 | // Read 141 | n, readErr := track.Read(b) 142 | if readErr != nil { 143 | fmt.Println(readErr) 144 | if readCount == 10 { 145 | break 146 | } 147 | readCount++ 148 | } 149 | 150 | // Write 151 | if _, err = c.conn.Write(b[:n]); err != nil { 152 | fmt.Println(err) 153 | if writeCount == 10 { 154 | break 155 | } 156 | writeCount++ 157 | if ctx.Err() == context.Canceled { 158 | break 159 | } 160 | } 161 | } 162 | }) 163 | 164 | // in a production application you should exchange ICE Candidates via OnICECandidate 165 | peerConnection.OnICECandidate(func(candidate *webrtc.ICECandidate) { 166 | fmt.Println(candidate) 167 | }) 168 | 169 | // Set the handler for ICE connection state 170 | // This will notify you when the peer has connected/disconnected 171 | peerConnection.OnICEConnectionStateChange(func(connectionState webrtc.ICEConnectionState) { 172 | fmt.Printf("Connection State has changed %s \n", connectionState.String()) 173 | 174 | if connectionState == webrtc.ICEConnectionStateConnected { 175 | fmt.Println("ICE connection was successful") 176 | } else if connectionState == webrtc.ICEConnectionStateFailed || 177 | connectionState == webrtc.ICEConnectionStateDisconnected { 178 | cancel() 179 | } 180 | }) 181 | 182 | // Wait for context to be done 183 | <-ctx.Done() 184 | peerConnection.Close() 185 | 186 | }(peerConnection) 187 | 188 | // Wait for the offer to be pasted 189 | offer := webrtc.SessionDescription{} 190 | encryptor.Decode(offerStr, &offer) 191 | // Set the remote SessionDescription 192 | if err = peerConnection.SetRemoteDescription(offer); err != nil { 193 | panic(err) 194 | } 195 | 196 | // Create answer 197 | answer, err = peerConnection.CreateAnswer(nil) 198 | if err != nil { 199 | panic(err) 200 | } 201 | 202 | // Sets the LocalDescription, and starts our UDP listeners 203 | if err = peerConnection.SetLocalDescription(answer); err != nil { 204 | panic(err) 205 | } 206 | 207 | return 208 | } 209 | --------------------------------------------------------------------------------