Add the resource management specification.

[yutakahirano]

The user agent can terminate the fetch operation and reclaim associated resources if the response body stream is not reachable and there is not an active reader. #15

[yutakahirano]

@domenic, can you take a look at the change?

[domenic]

, "i.e., IsReadableStreamLocked(s) is true"

[domenic]

What if s's reader is not reachable? Hmm...

[domenic]

Oh, if reader is not reachable, we still have problems with reader.read().then(...) or reader.closed.then(...), right.

Maybe add a non-normative note to the effect: "The intention here is that once the developer acquires a reader for the body stream, they have taken responsibility for resource management into their own hands, and plan to call s.cancel() if they are no longer interested in consuming the body."

[yutakahirano]

"i.e., IsReadableStreamLocked(s) is true"

But it is for ReadableStream, right? Can I use it for ReadableByteStream?

Oh, if reader is not reachable, we still have problems with reader.read().then(...) or reader.closed.then(...), right.
Maybe add a non-normative note to the effect: "The intention here is that once the developer acquires a reader for the body stream, they have taken responsibility for resource management into their own hands, and plan to call s.cancel() if they are no longer interested in consuming the body."

Thanks, I added that.

[domenic]

"i.e., IsReadableStreamLocked(s) is true"

But it is for ReadableStream, right? Can I use it for ReadableByteStream?

Siiigh, I guess not, technically :-/. But, IsReadableByteStreamLocked will be added to the spec at the same time ReadableByteStream is. So it depends on your strategy for referencing ReadableByteStream.

It is probably fine to leave as-is.

[yutakahirano]

OK, done. I will fix the link later.

[domenic]

(review done :))

[domenic]

I would add this example:

// The user agent must not terminate the communication because there is an
// active reader. Even though the reader is not reachable by the garbage collector,
// the reader has been used to make termination observable, so if termination
// occurred on GC, that would make GC observable.
fetch("http://www.example.com/").then(res => {
  res.body.getReader().closed.then(() => console.log("stream closed!"));
});

[yutakahirano]

I would add this example:

Done.