Goals¶

• Be able to stream media (video and audio) via HTTP
• Be able to browse directories and files via a web browser

Functional¶

• The user can double-click a media file in the browser tab of D-LAN and automatically open it with a media reader like VLC (The gui will just open a media-reader and send to it an http address).
• The user can access the directories and files of a peer with a web browser by using this kind of address : http://<ip>/<shared dir>/<path>
• There is no authentication and no need to use D-LAN on the client side
• The bandwidth is limited by default per connection, for example 1 MiB/s. The connection may adapt its limitation automatically to the bitrate of the current media file.
• The HTTP service can be stopped or activated at any moment
• The media reader is chosen depending the file extension and the OS settings.

Settings (Core)¶

Activated: bool
Port: int
Upload_rate_limit: int [b/s]
auto_media_rate_limit: bool

Technical¶

• A new component is created called HTTPServer.
• A flag in the IMAlive message tells if a peer supports HTTP or not.
• The component depends of FileManager. UploadManager and NetworkListener components depends of it.
• UploadManager listen for a signal to tell it to upload some chunks. The signal signature may be void getChunks(QList<QSharedPointer<FM::IChunk>> chunks, int offset, QSharedPointer<PM:ISocket> socket). The offset corresponds to the the first chunk of the list, the uploader will send all the given chunks in the order.
• PM:ISocket should be moved in the Common namespace.
• The http ISocket implementation can limits the bandwidth.
• The method QList<QSharedPointer<IChunk>> getAllChunks(const Protos::Common::Entry& localEntry) const should be added to IFileManager.
• This kind of http headers must be supported.

  GET /test.mkv HTTP/1.1
  Host: 192.168.1.4:8080
  User-Agent: VLC/2.0.0 LibVLC/2.0.0
  Range: bytes=544326882-
  Connection: close
  
  HTTP/1.1 206 Partial Content
  Date: [..]
  Server: [..]
  Last-Modified: Thu, 05 Apr 2012 20:23:46 GMT
  Accept-Ranges: bytes
  Content-Length: 164615087
  Content-Range: bytes 544326882-708941968/708941969
  Connection: close
  Content-Type: text/plain
  [..]
  

Sequence for uploading a file¶

1. NetworkListener -> newConnection(socket) -> HTTPServer
2. HTTPServer receives a GET command for a file
3. HTTPServer -> getAllChunks(entry) -> FileManager
4. HTTPServer -> <<signal>> getChunks([chunk], offset, socket) -> UploadManager

Sequence for printing a directory content¶

1. NetworkListener -> newConnection(socket) -> HTTPServer
2. HTTPServer receives a GET command for a directory
3. HTTPServer -> getEntries(entry) -> FileManager
4. HTTPServer send a html page to the socket to show the entries