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Описание

Приложение Conference React показывает пример использования Web SDK и RoomApi в React приложении для публикации и проигрывания WebRTC потоков в чат-комнате

Проект доступен на GitHub, а также в архивах сборок Web SDK по следующему пути examples/react/conference-react, начиная со сборки 2.0.201.

Сборка проекта

1. Загрузите исходные тексты WebSDK

git clone https://github.com/flashphoner/flashphoner_client.git

2. Перейдите в каталог примера

cd flashphoner_client/examples/react/conference-react

3. Установите зависимости

npm install

4. Запустите сборку для локального тестирования

npm start

или для выгрузки на свой веб-сервер

npm run build

Работа с кодом примера

Для разбора исходного кода примера возьмем версию с хэшем 456b1c7, которая доступна здесь, а также в сборке Web SDK 2.0.201

Код приложения расположен в файле ConferenceApp.js, дополнительные функции в файле fp-utils.js

1. Импорт API

code

import * as Flashphoner from '@flashphoner/websdk/src/flashphoner-core.js';
import * as RoomApi from '@flashphoner/websdk/src/room-module.js';
import * as FPUtils from './fp-utils.js';

2. Инициализация API

Flashphoner.init() code

componentDidMount() {
  try {
    Flashphoner.init({});
    ...
  }
  catch(e) {
    console.log(e);
    ...
  }
}

3. Установка соединения с сервером, получение события, подтверждающего установку соединения

RoomApi.connect(), SESSION_STATUS.ESTABLISHED  code

  createConnection = (url, username) => {
    let app = this;
    let session = this.state.session;

    if (session && session.status() === SESSION_STATUS.ESTABLISHED) {
      ...
    } else {
      console.log("Create new RoomApi session with url " + url + ", login " + username);
      app.setState({joinButtonDisabled: true, serverUrlDisabled: true});
      RoomApi.connect({urlServer: url, username: username}).on(SESSION_STATUS.ESTABLISHED, (session) => {
        app.setState({session: session, sessionStatus: SESSION_STATUS.ESTABLISHED, sessionStatusClass: 'text-success'});
        app.joinRoom(session);
      }).on(SESSION_STATUS.DISCONNECTED, () => {
        ...
      }).on(SESSION_STATUS.FAILED, () => {
        ...
      });
    }
  }

4. Вход участника в комнату, получение текущего состояния комнаты

connection.join(), ROOM_EVENT.STATE code

Функции connection.join() передаются параметры:

  • имя комнаты
  • признак записи потоков в комнате в один файл
  joinRoom = (session) => {
    let app = this;
    let roomName = this.getRoomName();
    let record = this.state.record;

    console.log("Join the room " + roomName + ", record " + record);
    session.join({name: roomName, record: record}).on(ROOM_EVENT.STATE, (room) => {
      let roomParticipants = room.getParticipants();
      let participantsNumber = roomParticipants.length;
      console.log("Current number of participants in the room: " + participantsNumber);
      if (roomParticipants.length >= maxParticipants) {
          console.warn("Current room is full");
          app.setState({sessionFailedInfo: "Current room is full"});
          room.leave().then(() => {app.onLeft();}, () => {app.onLeft();});
          return false;
      }
      app.setInviteUrl(roomName);
      if (participantsNumber > 0) {
        let chatState = "participants: ";
        for (let i = 0; i < participantsNumber; i++) {
            app.installParticipant(roomParticipants[i]);
            chatState += roomParticipants[i].name();
            if (i < participantsNumber - 1) {
                chatState += ",";
            }
        }
        app.addMessage("chat", chatState);
      } else {
        app.addMessage("chat", " room is empty");
      }
      ...
      app.publishLocalMedia(room);
      app.onJoined(room);
      ...
    });
  }

5. Публикация потока в комнате

Room.publish() code

  publishLocalMedia = (room) => {
    let app = this;
    let constraints = {
        audio: true,
        video: true
    };
    let display = document.getElementById("localDisplay");

    app.setState({publishButtonDisabled: true});
    room.publish({
        display: display,
        constraints: constraints,
        record: false,
        receiveVideo: false,
        receiveAudio: false
        ...
    });
  }

6, Получение сообщения, подтверждающего публикацию

STREAM_STATUS.PUBLISHING code

  publishLocalMedia = (room) => {
    ...
    room.publish({
        display: display,
        constraints: constraints,
        record: false,
        receiveVideo: false,
        receiveAudio: false
    }).on(STREAM_STATUS.FAILED, (stream) => {
        ...
    }).on(STREAM_STATUS.PUBLISHING, (stream) => {
        app.setState({publishStatus: STREAM_STATUS.PUBLISHING, publishStatusClass: 'text-success'});
        app.onMediaPublished(stream);
    }).on(STREAM_STATUS.UNPUBLISHED, (stream) => {
        ...
    });
  }

7. Получение события о присоединении участника к комнате

ROOM_EVENT.JOINED code

  joinRoom = (session) => {
    let app = this;
    let roomName = this.getRoomName();
    let record = this.state.record;

    console.log("Join the room " + roomName + ", record " + record);
    session.join({name: roomName, record: record}).on(ROOM_EVENT.STATE, (room) => {
      ...      
    }).on(ROOM_EVENT.JOINED, (participant) => {
      app.installParticipant(participant);
      app.addMessage(participant.name(), "joined");
    }).on(ROOM_EVENT.LEFT, function(participant) {
      ...
    }).on(ROOM_EVENT.PUBLISHED, (participant) => {
      ...
    }).on(ROOM_EVENT.FAILED, (room, info) => {
      ...
    }).on(ROOM_EVENT.MESSAGE, (message) => {
      ...
    });
  }

8. Получение события о публикации потока участником

ROOM_EVENT.PUBLISHED code

  joinRoom = (session) => {
    let app = this;
    let roomName = this.getRoomName();
    let record = this.state.record;

    console.log("Join the room " + roomName + ", record " + record);
    session.join({name: roomName, record: record}).on(ROOM_EVENT.STATE, (room) => {
      ...      
    }).on(ROOM_EVENT.JOINED, (participant) => {
      ...
    }).on(ROOM_EVENT.LEFT, function(participant) {
      ...
    }).on(ROOM_EVENT.PUBLISHED, (participant) => {
      app.playParticipantsStream(participant);
    }).on(ROOM_EVENT.FAILED, (room, info) => {
      ...
    }).on(ROOM_EVENT.MESSAGE, (message) => {
      ...
    });
  } 

9. Воспроизведение потока участника, изменение размеров картинки под div элемент

Stream.play(), STREAM_STATUS_PLAYING, FPUtils.resizeVideo() code

  playStream = (stream, remoteVideo, name) => {
    let app = this;
    let participantStream = null;

    participantStream = stream.play(remoteVideo).on(STREAM_STATUS.PLAYING, (playingStream) => {
      let video = document.getElementById(playingStream.id());
      if (video) {
        video.addEventListener('resize', (event) => {
          FPUtils.resizeVideo(event.target);
        });
      }
    });
    app.setParticipantStream(name, participantStream);
  }

10. Отправка сообщения участникам

Participant.sendMessage() code

  onSendClick = () => {
    let session = this.state.session;
    let room = this.state.room;
    let message = this.state.message;

    if (session && room) {
      let participants = room.getParticipants();
      this.addMessage(session.username(), message);
      for (let i = 0; i < participants.length; i++) {
          participants[i].sendMessage(encodeURIComponent(message));
      }
      this.setState({message: ''});
    }
  }

11. Получение сообщения от другого участника

ROOM_EVENT.MESSAGE code

  joinRoom = (session) => {
    let app = this;
    let roomName = this.getRoomName();
    let record = this.state.record;

    console.log("Join the room " + roomName + ", record " + record);
    session.join({name: roomName, record: record}).on(ROOM_EVENT.STATE, (room) => {
      ...      
    }).on(ROOM_EVENT.JOINED, (participant) => {
      ...
    }).on(ROOM_EVENT.LEFT, function(participant) {
      ...
    }).on(ROOM_EVENT.PUBLISHED, (participant) => {
      ...
    }).on(ROOM_EVENT.FAILED, (room, info) => {
      ...
    }).on(ROOM_EVENT.MESSAGE, (message) => {
      if (message.from && message.text) {
        app.addMessage(message.from.name(), decodeURIComponent(message.text));
      }
    });
  } 

12. Получение сообщения о выходе другого участника из комнаты

ROOM_EVENT.LEFT code

  joinRoom = (session) => {
    let app = this;
    let roomName = this.getRoomName();
    let record = this.state.record;

    console.log("Join the room " + roomName + ", record " + record);
    session.join({name: roomName, record: record}).on(ROOM_EVENT.STATE, (room) => {
      ...      
    }).on(ROOM_EVENT.JOINED, (participant) => {
      ...
    }).on(ROOM_EVENT.LEFT, function(participant) {
      app.removeParticipant(participant);
      app.addMessage(participant.name(), "left");
    }).on(ROOM_EVENT.PUBLISHED, (participant) => {
      ...
    }).on(ROOM_EVENT.FAILED, (room, info) => {
      ...
    }).on(ROOM_EVENT.MESSAGE, (message) => {
      ...
    });
  }  

13. Остановка публикации потока

Stream.stop() code

  onPublishClick = () => {
    let stream = this.state.publishStream;
    let room = this.state.room;

    if (!room) return;
    this.setState({publishButtonDisabled: true});
    if (!stream) {
      this.publishLocalMedia(room);
    } else {
      stream.stop();
    }
  };

14. Выход участника из комнаты

Room.leave() code

  onJoinClick = () => {
    let app = this;
    ...
    let room = this.state.room;
    let participants = this.state.participants;

    if (!room) {
      ...
    } else {
      this.setState({joinButtonDisabled: true}, () => {
        participants.forEach((participant) => {
          // Stop all the playing participants streams
          app.stopParticipantStream(participant.stream);
        });
        room.leave().then(() => {app.onLeft();}, () => {app.onLeft();});
      });
    }
  };
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