Thanks Simone.
Because of not adding the callback.succeed(). I cannot see the detail
result before,resulting in my confusing. Sorry for it.
The thing I want to do is to use the priority to block the resource I want
to get. For example my childpath here:
A: childpath.add("img/clink/clinklittle128.png");
B: childpath.add("js/preloadjs.min.js");
C: childpath.add("index.html");
D: childpath.add("css/infocard.css");
And I build a tree
A
|
C
/ \
B D
A is a really big file while C is a big file but smaller than A. I hope A
is large because it may cost much time for transporting then the client may
wait a very long time to get B , C , D(that is what I am interested, some
server's performance may be degraded because of the priority). But the
result shows that the order finished is B,D,C,A (while my request order is
A,B,C,D). Maybe that is because of flow control(I guess so).
And if I do not use the the priority. The finished order still remains
B,D,C,A. Then how can I know whether the server complete the priority logic
and where the pros of priority are.
But when they are both small files. The result goes as the priority
order(So I think client part is okay for priority sending).
Best Regards
Muhui Jiang
2015-09-18 17:21 GMT+08:00 Simone Bordet <[email protected]>:
> Hi,
>
> On Fri, Sep 18, 2015 at 8:51 AM, Muhui Jiang <[email protected]> wrote:
> > Hi
> >
> > If I just remove all the override part. The results seems not the same.
> >
> > childpath.add("img/clink/clinklittle128.png");
> >
> > childpath.add("js/preloadjs.min.js");
> >
> > childpath.add("index.html");
> >
> > childpath.add("css/infocard.css");
> >
> >
> > session.newStream(new HeadersFrame(metaDataA, null, true), new
> > Promise<Stream>()
> >
> > {
> >
> > @Override
> >
> > public void succeeded(Stream stream)
> >
> > {
> >
> > // Now we have the streamId.
> >
> > int streamIdA = stream.getId();
> >
> > System.out.println(streamIdA);
> >
> > MetaData.Request metaDataB = new MetaData.Request("GET", new
> > HttpURI("https://"+host+":"+port+"/"+childpath.get(1)),
> HttpVersion.HTTP_2,
> > requestFields);
> >
> > session.newStream(new HeadersFrame(metaDataB, new
> >
> > PriorityFrame(streamIdA, 1, false), true), new
> >
> > Promise.Adapter<>(), new Stream.Listener.Adapter() );
> >
> > MetaData.Request metaDataC = new MetaData.Request("GET", new
> > HttpURI("https://"+host+":"+port+"/"+childpath.get(2)),
> HttpVersion.HTTP_2,
> > requestFields);
> >
> > session.newStream(new HeadersFrame(metaDataC, new
> >
> > PriorityFrame(streamIdA, 256, true), true), new
> >
> > Promise.Adapter<>(), new Stream.Listener.Adapter() );
> >
> > MetaData.Request metaDataD = new MetaData.Request("GET", new
> > HttpURI("https://"+host+":"+port+"/"+childpath.get(3)),
> HttpVersion.HTTP_2,
> > requestFields);
> >
> > session.newStream(new HeadersFrame(metaDataD, new
> >
> > PriorityFrame(streamIdA, 1, false), true), new
> >
> > Promise.Adapter<>(), new Stream.Listener.Adapter() );
> >
> > }
> >
> >
> > @Override
> >
> > public void failed(Throwable x) {
> >
> > // TODO Auto-generated method stub
> >
> > }
> >
> > }, new Stream.Listener.Adapter()
> >
> >
> >
> > );
> >
> >
> > Weights and exclusive has no influence on the results. My server logs
> keeps
> > this order
> >
> > 127.0.0.1 - - [18/Sep/2015:14:48:22 +0800] "GET /index.html HTTP/2" 200
> 8215
> > "-" "org.eclipse.jetty.http2.client.HTTP2Client/9.3.4-SNAPSHOT"
> >
> > 127.0.0.1 - - [18/Sep/2015:14:48:22 +0800] "GET /css/infocard.css HTTP/2"
> > 200 2800 "-" "org.eclipse.jetty.http2.client.HTTP2Client/9.3.4-SNAPSHOT"
> >
> > 127.0.0.1 - - [18/Sep/2015:14:48:22 +0800] "GET /js/preloadjs.min.js
> HTTP/2"
> > 200 30839 "-" "org.eclipse.jetty.http2.client.HTTP2Client/9.3.4-SNAPSHOT"
> >
> > 127.0.0.1 - - [18/Sep/2015:14:48:22 +0800] "GET
> > /img/clink/clinklittle128.png HTTP/2" 200 2318863 "-"
> > "org.eclipse.jetty.http2.client.HTTP2Client/9.3.4-SNAPSHOT"
> >
> >
> > Do you know why?
>
> There is a disconnect between the code you show, what you expect it
> happens and what the server does.
> Your code above says that at childpath[2]==index.html, so you are
> probably asking it twice.
>
> You have also to realize that it takes some time for the frames to be
> sent, so it may be that your server has already fully processed the
> request before it can reason about priorities.
> Also, what the server prints in its logs may not in the same order of
> the received frames, or processed requests.
>
> I still don't understand what you are trying to do.
>
> If you are trying to request A, then B, then C with a bigger weight
> than B, then ask C first and then B.
> You don't need priorities.
>
> If you want to exercise priorities, you have to make B a really large
> file that takes time to be sent back, so that C has the time to arrive
> to the server, be priority-processed, so that the server pauses B to
> send C.
>
> If you override onData(), you have to make sure to call succeed() on
> the callback, otherwise the client will stop reading from the socket
> (after a while).
>
> Please state exactly what you want to achieve, and what the problem is.
>
> Thanks !
>
> --
> Simone Bordet
> ----
> http://cometd.org
> http://webtide.com
> Developer advice, training, services and support
> from the Jetty & CometD experts.
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