We don't know if the caller is prepared to receive those events right
now as normally they would get them on a fresh new stack later. We also
can't delay delivery since then we might deliver the event after any
pending "message" events.
Better to push the problem one layer up to the caller, which now needs
to be more aware of the state of the WebSocket object it is trying to
use.
This work is originally by Ryan Castner <castner.rr@gmail.com> and
submitted as a PR here https://github.com/novnc/noVNC/pull/1362
Architecturally it is much the same except it doesn't rename a lot
of variables to make this more reviewable. It also avoids unrelated
changes such as replacing .onclose with an event listener, which
caused numerous test failures.
It also adds in ppoffice's fix to initialise the buffers.
Like the original author I don't have enough time available to
refactor this project to the new style event listeners.
Review cleanup for RTCDataChannel support (see below)
* More descriptive error when url or channel not set.
* Moved websocket property check to WebSock.
This had unintended consequences in the tests that required some
fixup. Mostly due to some tests not always passing FakeWebsocket.
FakeWebsocket also needs to set the listeners to null to be compatible
with what is in thw browser and expected by the property check code.
The property check code now also takes into account class prototypes
for test compatibility.
* Removed unreachable code.
* Reverted comment.
* Cleanup raw channel reference in rfb on websock close.
* Use readyState to check whether a socket is open rather than assuming.
* Updated RFB constructor documentation
Removed an unused boolean passed to attach
Previously, we would compact the buffer (moving unread data to the
start of the buffer) as follows:
- after processing a message, if there are zero unread bytes, just reset
the indices for first and last unread byte to zero
- else, if at least 1/8th of the buffer is used, copy remaining data to the beginning of the buffer
The second option is never actually necessary, as before inserting new data
into the array, we already check if there's enough free space, and
compact the buffer first if necessary. So we've been doing a lot of
copies that weren't actually needed. Let's not do that any more.
Converted version downloaded from sinonjs.org. Fixed version that
doesn't register itself on the global object. This forces all modules to
do a proper import.
This updates the tests to work with the new structure, and removes the
old `utils/run_from_console.js` files in favor of just using Karma
directly. The Karma debug page now displays the normal mocha HTML, so
we can use that instead of the HTML generation functionality of the old
test runner.
Note that PhantomJS does not work at the moment (PhantomJS 1.5 should
make it possible to test on PhantomJS again).
This commit converts the send queue to use typed arrays, and converts
message creation functions in 'rfb.js' to create messages directly into
the socket's send queue. This commit also removes the separate mouse array,
which is no longer needed.
**This commit removes Base64 (and Flash) support**
This commit converts websock.js to used Typed Arrays for the
receive queue (and tweaks rfb.js to ensure that it continues
to function, since only Firefox implements
`%TypedArray%.prototype.slice`). Base64 support was removed
to simplify code paths, and pave the way for using Typed Arrays
for the send queue as well.
This provides two advantages: first, we allocate a buffer ahead
of time, meaning the browser doesn't have to do any work dynamically
increasing the receive queue size. Secondly, we are now able to pass
around Typed Array Views (e.g. `Uint8Array`), which are lightweight, and
don't involve copying.
The downside is that we initially allocate more memory -- we currently
start out with 4 MiB, and then automatically double when it looks like
the amount unused is getting to small.
The commit also explicitly adds a check to the compacting logic that
avoids calling the copy functions if `_rQlen === _rQi`.
File: websock.js
Tests Added: True
Changes:
- Cleaned up JSHint errors
- Converted to normal JS constructor pattern with "private" fields and
methods now simply being prepended by underscores
- Added a "bind" polyfill for use in PhantomJS 1.x in util.js
- Added FakeWebSocket to fill in for actual WebSocket objects when
testing
- Made exception handler actually log exception name and message,
to console, in addition to stack trace
Pierre Ossman
Tim Stableford
Samuel Mannehed
Jesper Alf Dam
Juanjo Diaz
Juanjo Diaz
Solly Ross
Drew DeVault