In synchronous Writable streams (where the _write cb is called on the
current tick), the 'finish' event (and thus the end() callback) can in
some cases be called before all the write() callbacks are called.
Use a counter, and have stream.Transform rely on the 'prefinish' event
instead of the 'finish' event.
This has zero effect on most streams, but it corrects an edge case and
makes it perform more deterministically, which is a Good Thing.
Since 049903e, an end callback could be called before a write
callback if end() is called before the write is done. This patch
resolves the issue.
In collaboration with @gne
Fixes felixge/node-formidable#209
Fixes#5215
Calling end(data) calls write(data). Doing this after end should
raise a 'write after end' error.
However, because end() calls were previously ignored on already
ended streams, this error was confusingly suppressed, even though the
data never is written, and cannot get to the other side.
This is a re-hash of 5222d19a11, but
without assuming that the data passed to end() is valid, and thus
breaking a bunch of tests.
Calling end(data) calls write(data). Doing this after end should
raise a 'write after end' error.
However, because end() calls were previously ignored on already
ended streams, this error was confusingly suppressed, even though the
data never is written, and cannot get to the other side.
This handles the fact that stream.Writable inherits from the Stream class,
meaning that it has the legacy pipe() method. Override that with a pipe()
method that emits an error.
Ensure that Duplex streams ARE still pipe()able, however.
Since the 'readable' flag on streams is sometimes temporary, it's probably
better not to put too much weight on that. But if something is an instanceof
Writable, rather than of Readable or Duplex, then it's safe to say that
reading from it is the wrong thing to do.
Fix#3647
It seems like a good idea on the face of it, but lowWaterMarks are
actually not useful, and in practice should always be set to zero.
It would be worthwhile for writers if we actually did some kind of
writev() type of thing, but actually this just delays calling write()
and the overhead of doing a bunch of Buffer copies is not worth the
slight benefit of calling write() fewer times.
This is more backwards-compatible with stream1 streams like `fs.WriteStream`
which would allow a callback function to be passed in as the only argument.
Closes#4719.
We detect for non-string and non-buffer values in onread and
turn the stream into an "objectMode" stream.
If we are in "objectMode" mode then howMuchToRead will
always return 1, state.length will always have 1 appended
to it when there is a new item and fromList always takes
the first value from the list.
This means that for object streams, the n in read(n) is
ignored and read() will always return a single value
Fixed a bug with unpipe where the pipe would break because
the flowing state was not reset to false.
Fixed a bug with sync cb(null, null) in _read which would
forget to end the readable stream
Vladimir Kurchatkin
isaacs
Ben Noordhuis
Nathan Rajlich
Raynos