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https://issues.apache.org/jira/browse/TS-3869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14715630#comment-14715630
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Bryan Call edited comment on TS-3869 at 8/26/15 10:19 PM:
----------------------------------------------------------
In this test the server only sends back a WINDOW_UPDATE on the connection and
doesn't send a WINDOW_UPDATE for the stream, since it has ~15MB left (2^24 -
1MB).
{code}
[bcall@mac-bryan-wire ~]$ nghttp -w 24 -W 24 -v -n -d foo
https://127.0.0.1/post.php
...
[ 0.081] send DATA frame <length=16375, flags=0x00, stream_id=1>
[ 0.081] send DATA frame <length=541, flags=0x00, stream_id=1>
[ 0.092] recv SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.092] recv WINDOW_UPDATE frame <length=4, flags=0x00, stream_id=0>
(window_size_increment=998910)
[ 25.125] recv (stream_id=1, noind=1) :status: 502
[ 25.125] recv (stream_id=1, noind=0) date: Wed, 26 Aug 2015 22:07:43 GMT
[ 25.125] recv (stream_id=1, noind=0) via: https/1.1
rav1-1-gci-pool-general-10-87-130-110.corp.yahoo.com (ApacheTrafficServer/6.0.0
[uSc s f p eC:tOc i p sF])
{code}
was (Author: bcall):
In this test the server only sends back a WINDOW_UPDATE on the connection and
doesn't send a WINDOW_UPDATE for the stream, since it has 9MB left.
{code}
[bcall@mac-bryan-wire ~]$ nghttp -w 24 -W 24 -v -n -d foo
https://127.0.0.1/post.php
...
[ 0.081] send DATA frame <length=16375, flags=0x00, stream_id=1>
[ 0.081] send DATA frame <length=541, flags=0x00, stream_id=1>
[ 0.092] recv SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.092] recv WINDOW_UPDATE frame <length=4, flags=0x00, stream_id=0>
(window_size_increment=998910)
[ 25.125] recv (stream_id=1, noind=1) :status: 502
[ 25.125] recv (stream_id=1, noind=0) date: Wed, 26 Aug 2015 22:07:43 GMT
[ 25.125] recv (stream_id=1, noind=0) via: https/1.1
rav1-1-gci-pool-general-10-87-130-110.corp.yahoo.com (ApacheTrafficServer/6.0.0
[uSc s f p eC:tOc i p sF])
{code}
> HTTP/2 Stream uses the clients window size for the servers setting
> ------------------------------------------------------------------
>
> Key: TS-3869
> URL: https://issues.apache.org/jira/browse/TS-3869
> Project: Traffic Server
> Issue Type: Bug
> Components: HTTP/2
> Reporter: Bryan Call
> Assignee: Bryan Call
> Fix For: 6.0.0
>
>
> The Http2Stream class incorrectly uses the clients window size for
> initializing the servers window size. In Chrome this defaults to 10MB.
> Since the client client thinks it the window size is 1MB, the amount the
> server said it was, and the server thinks it is 10MB the client will only be
> able to send 1MB of data and then wait until it gets more credit. More
> credit isn't given until there is 16KB left on the stream and it will never
> get there since 10MB - 1MB = 9MB.
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