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Joel Martin 6671c7624d Release down/pressed keys when window loses focus. 
May window managers have a keyboard shortcut that switch away from the
current desktop (e.g. desktop switcher). Unfortunately, when this
happens, the meta/control keys that are used with the shortcut will
send a down event to the browser, but the up event will never be sent
because the browser no longer has focus at the point when the up event
happens. This can cause weird stuck key issues for VNC clients (not
just noVNC). To get around this, we try and detect when the browser
loses focus and release any keys that are on the keyDownList.

As an aside, if you run into this situation (in noVNC or another VNC
client), you can unstick the state by pressing and releasing the Ctrl,
Shift, Alt, etc.

Addresses: https://github.com/kanaka/noVNC/pull/135
 		2012-03-14 11:10:06 -05:00
debian Version 0.1 2012-02-20 12:29:56 -06:00
docs Version 0.1 2012-02-20 12:29:56 -06:00
images Formatting. Image renames/cleanup. 2011-09-29 09:32:09 -05:00
include Release down/pressed keys when window loses focus. 2012-03-14 11:10:06 -05:00
tests Merge remote branch 'origin/issue-70' 2012-01-12 17:17:11 -06:00
utils Don't swallow SSL EOF errors. 2012-02-20 16:33:08 -06:00
.gitignore Ignore utils/rebind.so 2011-03-23 21:23:08 -05:00
LICENSE.txt Flesh out authors/contributors and licenses. 2012-03-11 14:39:23 -05:00
README.md Use standard citing format for contributors. 2012-03-12 00:34:53 -05:00
favicon.ico Add logo, favicon. 2011-02-03 11:04:32 -06:00
vnc.html Add message panel when hosted at kanaka.github.com. 2012-02-15 14:12:27 -06:00
vnc_auto.html Make WebSocket encrypt setting default to page protocol. 2012-02-02 09:29:02 -06:00

README.md

noVNC: HTML5 VNC Client

Description

noVNC is a HTML5 VNC client that runs well in any modern browser including mobile browsers (iPhone/iPad and Android).

Notable commits, announcements and news are posted to @noVNC

There are many companies/projects that have integrated noVNC into their products including: Ganeti Web Manager, Archipel, openQRM, OpenNode, OpenStack, Broadway (HTML5 GDK/GTK+ backend), OpenNebula, CloudSigma, Zentyal (formerly eBox), SlapOS, Intel MeshCentral, Amahi, Brightbox, and LibVNCServer. See this wiki page for more info and links.

Features

  • Supports all modern browsers including mobile (iOS, Android)
  • Supported VNC encodings: raw, copyrect, rre, hextile, tight, tightPNG
  • WebSocket SSL/TLS encryption (i.e. "wss://") support
  • 24-bit true color and 8 bit colour mapped
  • Supports desktop resize notification/pseudo-encoding
  • Local or remote cursor
  • Clipboard copy/paste
  • Clipping or scolling modes for large remote screens
  • Easy site integration and theming (3 example themes included)
  • Licensed under the LGPLv3

Screenshots

Running in Chrome before and after connecting:

 

See more screenshots here.

Browser Requirements

  • HTML5 Canvas (with createImageData): Chrome, Firefox 3.6+, iOS Safari, Opera 11+, Internet Explorer 9+, etc.

  • HTML5 WebSockets: For browsers that do not have builtin WebSockets support, the project includes web-socket-js, a WebSockets emulator using Adobe Flash. iOS 4.2+ has built-in WebSocket support.

  • Fast Javascript Engine: this is not strictly a requirement, but without a fast Javascript engine, noVNC might be painfully slow.

  • I maintain a more detailed browser compatibility list here.

Server Requirements

Unless you are using a VNC server with support for WebSockets connections (such as x11vnc/libvncserver), you need to use a WebSockets to TCP socket proxy. There is a python proxy included ('websockify').

Quick Start

  • Use the launch script to start a mini-webserver and the WebSockets proxy (websockify). The --vnc option is used to specify the location of a running VNC server:

    ./utils/launch.sh --vnc localhost:5901

  • Point your browser to the cut-and-paste URL that is output by the launch script. Enter a password if the VNC server has one configured. Hit the Connect button and enjoy!

Other Pages

Authors/Contributors

  • noVNC : Joel Martin (github.com/kanaka)

    • New UI and Icons : Chris Gordon
    • Original Logo : Michael Sersen
    • tight encoding : Michael Tinglof (Mercuri.ca)

  • Included libraries:

    • web-socket-js : Hiroshi Ichikawa (github.com/gimite/web-socket-js)
    • as3crypto : Henri Torgemane (code.google.com/p/as3crypto)
    • base64 : Martijn Pieters (Digital Creations 2), Samuel Sieb (sieb.net)
    • jsunzip : Erik Moller (github.com/operasoftware/jsunzip),
    • tinflate : Joergen Ibsen (ibsensoftware.com)
    • DES : Dave Zimmerman (Widget Workshop), Jef Poskanzer (ACME Labs)