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New API:
To use the RFB object, you now must instantiate it (this allows more
than one instance of it on the same page).
rfb = new RFB(settings);
The 'settings' variable is a namespace that contains initial default
settings. These can also be set and read using 'rfb.set_FOO()' and
'rfb.get_FOO()' where FOO is the setting name. The current settings
are (and defaults) are:
- target: the DOM Canvas element to use ('VNC_canvas').
- encrypt: whether to encrypt the connection (false)
- true_color: true_color or palette (true)
- b64encode: base64 encode the WebSockets data (true)
- local_cursor: use local cursor rendering (true if supported)
- connectTimeout: milliseconds to wait for connect (2000)
- updateState: callback when RFB state changes (none)
- clipboardReceive: callback when clipboard data received (none)
The parameters to the updateState callback have also changed. The
function spec is now updateState(rfb, state, oldstate, msg):
- rfb: the RFB object that this state change is for.
- state: the new state
- oldstate: the previous state
- msg: a message associate with the state (not always set).
The clipboardReceive spec is clipboardReceive(rfb, text):
- rfb: the RFB object that this text is from.
- text: the clipboard text received.
Changes:
- The RFB and Canvas namespaces are now more proper objects. Private
implementation is no longer exposed and the public API has been made
explicit. Also, instantiation allows more than one VNC connection
on the same page (to complete this, DefaultControls will also need
this same refactoring).
- Added 'none' logging level.
- Removed automatic stylesheet selection workaround in util.js and
move it to defaultcontrols so that it doesn't interfere with
intergration.
- Also, some major JSLinting.
- Fix input, canvas, and cursor tests to work with new model.
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It points to the include sub-directory, not to the directory above.
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To change the appearance of the cursor, we use the CSS cursor style
and set the url to a data URI scheme. The image data sent via the
cursor pseudo-encoding has to be encoded to a CUR format file before
being used in the data URI.
During Canvas initialization we try and set a simple cursor to see if
the browser has support. Opera is missing support for data URI scheme
in cursor URLs.
Disabled for now until we have a better way of specifying settings
overall (too many settings for control bar now).
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- Change tightpng encoding number to -260 (aliguori provided it until
an official number can be allocated).
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Brings it up to date with the most recent web-socket-js event handling
fixes.
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Instead of relying on FABridge AS -> JS event delivery, we just use
the events to notify JS of pending data. The message handler then
calls the AS readSocketData routine which sends back an array of
the pending WebSocket frames.
There is still a minor bug somewhere that happens after the first
connect where the web-socket-js throws an "INVALID_STATE_ERR: Web
Socket connection has not been established". But, Opera is now usable
and we should be able to drop the packet sequence numbering and
re-ordering code.
Another minor issue to better support Opera is to move JS script
includes to the <head> of the page instead of after the body.
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Now working under Arora 0.5.
But not Konqueror 4.2.2 (WebSockets never connects).
IE support with excanvas still pending.
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This allows forwarding from an external port to the same port on
localhost (loopback). I.e.
./utils/wsproxy `hostname -f`:5901 localhost:5901
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Also, allow 'include/' to be overridden in VNC_uri_prefix.
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Fixes:
- Make sure that failed state messages stay around until next connect.
- Get status message font colors working.
- Clear RQ_reorder list on re-connect.
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- Instead of onload override, move to RFB.load function that takes
a parameter for the target DOM ID. This allows the user to have
their own onload function.
- Add "VNC_" prefix to all element ID names. Only create DOM elements
if they don't already exist on the page, otherwise use the existing
elements.
- Move all styling to separate stylesheet.
- Use list model for control styling.
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On the client side, this adds the as3crypto library to web-socket-js
so that the WebSocket 'wss://' scheme is supported which is WebSocket
over SSL/TLS.
Couple of downsides to the fall-back method:
- This balloons the size of the web-socket-js object from about 12K to 172K.
- Getting it working required disabling RFC2718 web proxy support
in web-socket-js.
- It makes the web-socket-js fallback even slower with the
encryption overhead.
The server side (wsproxy.py) uses python SSL support. The proxy
automatically detects the type of incoming connection whether flash
policy request, SSL/TLS handshake ('wss://') or plain socket
('ws://').
Also added a check-box to the web page to enable/disabled 'wss://'
encryption.
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- Semi-colon missing.
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