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Merge pull request #2 from alexballas/feature/subscriptions
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| package httphandlers | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "html" | ||
| "io/ioutil" | ||
| "net" | ||
| "net/http" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
|
|
||
| "github.com/alexballas/go2tv/soapcalls" | ||
| ) | ||
|
|
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| // filesToServe defines the files we need to serve. | ||
| type filesToServe struct { | ||
| Video string | ||
| Subtitles string | ||
| } | ||
|
|
||
| // HTTPserver - new http.Server instance. | ||
| type HTTPserver struct { | ||
| http *http.Server | ||
| mux *http.ServeMux | ||
| } | ||
|
|
||
| // TVPayload - We need some of the soapcalls magic in | ||
| // this package too. We need to expose the ControlURL | ||
| // to the callback handler. | ||
| type TVPayload struct { | ||
| Soapcalls soapcalls.TVPayload | ||
| } | ||
|
|
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| // ServeFiles - Start HTTP server and serve the files. | ||
| func (s *HTTPserver) ServeFiles(serverStarted chan<- struct{}, videoPath, subtitlesPath string, tvpayload *TVPayload) { | ||
|
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| files := &filesToServe{ | ||
| Video: videoPath, | ||
| Subtitles: subtitlesPath, | ||
| } | ||
|
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| s.mux.HandleFunc("/"+filepath.Base(files.Video), files.serveVideoHandler) | ||
| s.mux.HandleFunc("/"+filepath.Base(files.Subtitles), files.serveSubtitlesHandler) | ||
| s.mux.HandleFunc("/callback", tvpayload.callbackHandler) | ||
|
|
||
| ln, err := net.Listen("tcp", s.http.Addr) | ||
| if err != nil { | ||
| fmt.Fprintf(os.Stderr, "Encountered error(s): %s\n", err) | ||
| os.Exit(1) | ||
| } | ||
| serverStarted <- struct{}{} | ||
| fmt.Println("Listening on:", s.http.Addr) | ||
| s.http.Serve(ln) | ||
|
|
||
| } | ||
|
|
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| // StopServeFiles - Kill the HTTP server. | ||
| func (s *HTTPserver) StopServeFiles() { | ||
| s.http.Close() | ||
| } | ||
|
|
||
| func (f *filesToServe) serveVideoHandler(w http.ResponseWriter, req *http.Request) { | ||
| w.Header().Set("transferMode.dlna.org", "Streaming") | ||
| w.Header().Set("contentFeatures.dlna.org", "DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=017000 00000000000000000000000000") | ||
|
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||
| filePath, err := os.Open(f.Video) | ||
| defer filePath.Close() | ||
| if err != nil { | ||
| fmt.Fprintf(os.Stderr, "Encountered error(s): %s\n", err) | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| fileStat, err := filePath.Stat() | ||
| if err != nil { | ||
| fmt.Fprintf(os.Stderr, "Encountered error(s): %s\n", err) | ||
| os.Exit(1) | ||
| } | ||
| http.ServeContent(w, req, filepath.Base(f.Video), fileStat.ModTime(), filePath) | ||
| } | ||
|
|
||
| func (f *filesToServe) serveSubtitlesHandler(w http.ResponseWriter, req *http.Request) { | ||
| w.Header().Set("transferMode.dlna.org", "Streaming") | ||
| w.Header().Set("contentFeatures.dlna.org", "DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=017000 00000000000000000000000000") | ||
|
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||
| filePath, err := os.Open(f.Subtitles) | ||
| defer filePath.Close() | ||
| if err != nil { | ||
| http.Error(w, "", 404) | ||
| return | ||
| } | ||
|
|
||
| fileStat, err := filePath.Stat() | ||
| if err != nil { | ||
| http.Error(w, "", 404) | ||
| return | ||
| } | ||
| http.ServeContent(w, req, filepath.Base(f.Subtitles), fileStat.ModTime(), filePath) | ||
| } | ||
|
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||
| func (p *TVPayload) callbackHandler(w http.ResponseWriter, req *http.Request) { | ||
| reqParsed, _ := ioutil.ReadAll(req.Body) | ||
| // I'm sure there's a smarter way to do it. | ||
| // I'm not smart. | ||
| uuid := req.Header["Sid"][0] | ||
| uuid = strings.TrimLeft(uuid, "[") | ||
| uuid = strings.TrimLeft(uuid, "]") | ||
| uuid = strings.TrimLeft(uuid, "uuid:") | ||
|
|
||
| // Apparently we should ignore the first message | ||
| // On some media renderes we receive a STOPPED message | ||
| // even before we start streaming. | ||
| if p.Soapcalls.Sequence == 0 { | ||
| p.Soapcalls.Sequence++ | ||
| fmt.Fprintf(w, "OK\n") | ||
| return | ||
| } | ||
|
|
||
| reqParsedUnescape := html.UnescapeString(string(reqParsed)) | ||
| previousstate, newstate, err := soapcalls.EventNotifyParser(reqParsedUnescape) | ||
|
|
||
| if err != nil { | ||
| http.Error(w, "", 404) | ||
| return | ||
| } | ||
|
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||
| // If the uuid is not one of the UUIDs we stored in | ||
| // soapcalls.InitialMediaRenderersStates it means that | ||
| // probably it expired and there is not much we can do | ||
| // with it. Trying to send an unsubscribe for those will | ||
| // probably result in a 412 error as per the upnpn documentation | ||
| // http://upnp.org/specs/arch/UPnP-arch-DeviceArchitecture-v1.1.pdf | ||
| // (page 94). | ||
| if soapcalls.InitialMediaRenderersStates[uuid] == true { | ||
| p.Soapcalls.Mu.Lock() | ||
| soapcalls.MediaRenderersStates[uuid] = map[string]string{ | ||
| "PreviousState": previousstate, | ||
| "NewState": newstate, | ||
| } | ||
| p.Soapcalls.Mu.Unlock() | ||
| } else { | ||
| http.Error(w, "", 404) | ||
| return | ||
| } | ||
| if newstate == "PLAYING" { | ||
| fmt.Println("Received: Playing") | ||
| } | ||
| if newstate == "PAUSED_PLAYBACK" { | ||
| fmt.Println("Received: Paused") | ||
| } | ||
| if newstate == "STOPPED" { | ||
| fmt.Println("Received: Stopped") | ||
| p.Soapcalls.UnsubscribeSoapCall(uuid) | ||
| os.Exit(0) | ||
| } | ||
| // TODO - Properly reply to that. | ||
| fmt.Fprintf(w, "OK\n") | ||
| return | ||
| } | ||
|
|
||
| // NewServer - create a new HTTP server. | ||
| func NewServer(a string) HTTPserver { | ||
| srv := HTTPserver{ | ||
| http: &http.Server{Addr: a}, | ||
| mux: http.NewServeMux(), | ||
| } | ||
| srv.http.Handler = srv.mux | ||
| return srv | ||
| } |
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