/ws-file-transfer

Primary LanguageJavaScript

CBOR websocket file transfer example

This project demonstrates:

  • file split to constant size chunks
  • transfer CBOR encoded chunks by WebSocket
  • receive chunks and decode them
  • concatenate chunks and save them to filesystem with same file name

Build & run

$ npm install
$ npm run build

# run server (on ws://localhost:8081)
$ node server.js

# open page
$ open index.html

Steps description

Buttons:

  • Choose file - opens dialog window to choose file
  • Upload - opens WS connection and sends file chunks
  • Close connection - closes WS connection

Server saves the file when total chunks size reaches original file size

Protocol description

  • command - your command (100 by default)
  • offset - offset from 0 byte of file
  • data - actual file data chunk with 128 bytes length
  • fileName - file name
  • fileSize - total file size
  • fileType - MIME type