void OutProgressiveFLV::sendHeader(){
    HTTP::Parser HTTP_S;
    FLV::Tag tag;
    HTTP_S.SetHeader("Content-Type", "video/x-flv");
    HTTP_S.protocol = "HTTP/1.0";
    myConn.SendNow(HTTP_S.BuildResponse("200", "OK"));
    myConn.SendNow(FLV::Header, 13);
    tag.DTSCMetaInit(myMeta, selectedTracks);
    myConn.SendNow(tag.data, tag.len);

    for (std::set<long unsigned int>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
      if (myMeta.tracks[*it].type == "video"){
        tag.DTSCVideoInit(myMeta.tracks[*it]);
        myConn.SendNow(tag.data, tag.len);
      }
      if (myMeta.tracks[*it].type == "audio"){
        tag.DTSCAudioInit(myMeta.tracks[*it]);
        myConn.SendNow(tag.data, tag.len);
      }
    }
    sentHeader = true;
  }
Пример #2
0
  ///\brief Main function for the HTTP Dynamic Connector
  ///\param conn A socket describing the connection the client.
  ///\return The exit code of the connector.
  int dynamicConnector(Socket::Connection conn){
    std::deque<std::string> FlashBuf;
    int FlashBufSize = 0;
    long long int FlashBufTime = 0;
    FLV::Tag tmp; //temporary tag

    DTSC::Stream Strm; //Incoming stream buffer.
    HTTP::Parser HTTP_R, HTTP_S; //HTTP Receiver en HTTP Sender.

    Socket::Connection ss( -1);
    std::string streamname;
    std::string recBuffer = "";

    std::string Quality;
    int Segment = -1;
    int ReqFragment = -1;
    unsigned int lastStats = 0;
    conn.setBlocking(false); //do not block on conn.spool() when no data is available

    while (conn.connected()){
      if (conn.spool() || conn.Received().size()){
        //make sure it ends in a \n
        if ( *(conn.Received().get().rbegin()) != '\n'){
          std::string tmp = conn.Received().get();
          conn.Received().get().clear();
          if (conn.Received().size()){
            conn.Received().get().insert(0, tmp);
          }else{
            conn.Received().append(tmp);
          }
        }
        if (HTTP_R.Read(conn.Received().get())){
#if DEBUG >= 5
          std::cout << "Received request: " << HTTP_R.getUrl() << std::endl;
#endif
          conn.setHost(HTTP_R.GetHeader("X-Origin"));
          streamname = HTTP_R.GetHeader("X-Stream");
          if ( !ss){
            ss = Util::Stream::getStream(streamname);
            if ( !ss.connected()){
              HTTP_S.Clean();
              HTTP_S.SetBody("No such stream is available on the system. Please try again.\n");
              conn.SendNow(HTTP_S.BuildResponse("404", "Not found"));
              continue;
            }
            ss.setBlocking(false);
            //make sure metadata is received
            while ( !Strm.metadata && ss.connected()){
              if (ss.spool()){
                while (Strm.parsePacket(ss.Received())){
                  //do nothing
                }
              }
            }
          }
          if (HTTP_R.url.find(".abst") != std::string::npos){
            HTTP_S.Clean();
            HTTP_S.SetBody(dynamicBootstrap(streamname, Strm.metadata));
            HTTP_S.SetHeader("Content-Type", "binary/octet");
            HTTP_S.SetHeader("Cache-Control", "no-cache");
            conn.SendNow(HTTP_S.BuildResponse("200", "OK"));
            HTTP_R.Clean(); //clean for any possible next requests
            continue;
          }
          if (HTTP_R.url.find("f4m") == std::string::npos){
            Quality = HTTP_R.url.substr(HTTP_R.url.find("/", 10) + 1);
            Quality = Quality.substr(0, Quality.find("Seg"));
            int temp;
            temp = HTTP_R.url.find("Seg") + 3;
            Segment = atoi(HTTP_R.url.substr(temp, HTTP_R.url.find("-", temp) - temp).c_str());
            temp = HTTP_R.url.find("Frag") + 4;
            ReqFragment = atoi(HTTP_R.url.substr(temp).c_str());
#if DEBUG >= 5
            printf("Quality: %s, Seg %d Frag %d\n", Quality.c_str(), Segment, ReqFragment);
#endif
            if (Strm.metadata.isMember("live")){
              int seekable = Strm.canSeekFrame(ReqFragment);
              if (seekable == 0){
                // iff the fragment in question is available, check if the next is available too
                seekable = Strm.canSeekFrame(ReqFragment + 1);
              }
              if (seekable < 0){
                HTTP_S.Clean();
                HTTP_S.SetBody("The requested fragment is no longer kept in memory on the server and cannot be served.\n");
                conn.SendNow(HTTP_S.BuildResponse("412", "Fragment out of range"));
                HTTP_R.Clean(); //clean for any possible next requests
                std::cout << "Fragment @ F" << ReqFragment << " too old (F" << Strm.metadata["keynum"][0u].asInt() << " - " << Strm.metadata["keynum"][Strm.metadata["keynum"].size() - 1].asInt() << ")" << std::endl;
                continue;
              }
              if (seekable > 0){
                HTTP_S.Clean();
                HTTP_S.SetBody("Proxy, re-request this in a second or two.\n");
                conn.SendNow(HTTP_S.BuildResponse("208", "Ask again later"));
                HTTP_R.Clean(); //clean for any possible next requests
                std::cout << "Fragment @ F" << ReqFragment << " not available yet (F" << Strm.metadata["keynum"][0u].asInt() << " - " << Strm.metadata["keynum"][Strm.metadata["keynum"].size() - 1].asInt() << ")" << std::endl;
                continue;
              }
            }
            std::stringstream sstream;
            sstream << "f " << ReqFragment << "\no \n";
            ss.SendNow(sstream.str().c_str());
          }else{
            HTTP_S.Clean();
            HTTP_S.SetHeader("Content-Type", "text/xml");
            HTTP_S.SetHeader("Cache-Control", "no-cache");
            std::string manifest = dynamicIndex(streamname, Strm.metadata);
            HTTP_S.SetBody(manifest);
            conn.SendNow(HTTP_S.BuildResponse("200", "OK"));
          }
          HTTP_R.Clean(); //clean for any possible next requests
        }
      }else{
        Util::sleep(1);
      }
      if (ss.connected()){
        unsigned int now = Util::epoch();
        if (now != lastStats){
          lastStats = now;
          ss.SendNow(conn.getStats("HTTP_Dynamic").c_str());
        }
        if (ss.spool()){
          while (Strm.parsePacket(ss.Received())){
            if (Strm.lastType() == DTSC::PAUSEMARK){
              if (FlashBufSize){
                HTTP_S.Clean();
                HTTP_S.SetHeader("Content-Type", "video/mp4");
                HTTP_S.SetBody("");
                std::string new_strap = dynamicBootstrap(streamname, Strm.metadata, ReqFragment);
                HTTP_S.SetHeader("Content-Length", FlashBufSize + 8 + new_strap.size()); //32+33+btstrp.size());
                conn.SendNow(HTTP_S.BuildResponse("200", "OK"));
                conn.SendNow(new_strap);
                unsigned long size = htonl(FlashBufSize+8);
                conn.SendNow((char*) &size, 4);
                conn.SendNow("mdat", 4);
                while (FlashBuf.size() > 0){
                  conn.SendNow(FlashBuf.front());
                  FlashBuf.pop_front();
                }
              }
              FlashBuf.clear();
              FlashBufSize = 0;
            }
            if (Strm.lastType() == DTSC::VIDEO || Strm.lastType() == DTSC::AUDIO){
              if (FlashBufSize == 0){
                //fill buffer with init data, if needed.
                if (Strm.metadata.isMember("audio") && Strm.metadata["audio"].isMember("init")){
                  tmp.DTSCAudioInit(Strm);
                  tmp.tagTime(Strm.getPacket(0)["time"].asInt());
                  FlashBuf.push_back(std::string(tmp.data, tmp.len));
                  FlashBufSize += tmp.len;
                }
                if (Strm.metadata.isMember("video") && Strm.metadata["video"].isMember("init")){
                  tmp.DTSCVideoInit(Strm);
                  tmp.tagTime(Strm.getPacket(0)["time"].asInt());
                  FlashBuf.push_back(std::string(tmp.data, tmp.len));
                  FlashBufSize += tmp.len;
                }
                FlashBufTime = Strm.getPacket(0)["time"].asInt();
              }
              tmp.DTSCLoader(Strm);
              FlashBuf.push_back(std::string(tmp.data, tmp.len));
              FlashBufSize += tmp.len;
            }
          }
        }
        if ( !ss.connected()){
          break;
        }
      }
    }
    conn.close();
    ss.SendNow(conn.getStats("HTTP_Dynamic").c_str());
    ss.close();
    return 0;
  } //Connector_HTTP_Dynamic main function