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https://issues.apache.org/jira/browse/DISPATCH-1751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17216852#comment-17216852
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ASF GitHub Bot commented on DISPATCH-1751:
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gemmellr commented on a change in pull request #847:
URL: https://github.com/apache/qpid-dispatch/pull/847#discussion_r507874549
##########
File path: src/amqp.c
##########
@@ -96,6 +96,8 @@ const char * const QD_AMQPS_PORT_STR = "5671";
const char * const QD_AMQP_DFLT_PROTO = "tcp";
+const int PN_AMQP_MAX_SESSION_CAPACITY_32BIT = 2147483647;
Review comment:
Was it checked if this 2^31-1 value is actually the the limit? I
commented before that prior discussion suggested it might not be though it
needed verified:
> Also though, if I'm remembering the last discussion of this, the value is
unsigned and so wouldnt that make the configurable limit here 2^32 -1 instead
really?
Seperately, should it be PN_<foo> if its being defined by Dispatch? It may
be about a Proton setting, but its still a Dispatch constant. Also nothing else
here or in the include file seems to use anything except QD_
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> unexpected incoming-window in begin frame when running Dispatch on 32 bit
> system
> --------------------------------------------------------------------------------
>
> Key: DISPATCH-1751
> URL: https://issues.apache.org/jira/browse/DISPATCH-1751
> Project: Qpid Dispatch
> Issue Type: Bug
> Affects Versions: 1.13.0
> Reporter: Ganesh Murthy
> Priority: Major
>
> On 32bit systems, an unexpected incoming-window value is set. This for
> example causes system_tests_protocol_settings failures on 32bit systems, with
> test expecting to see the incoming-window be 2147483647 but instead finding
> it much less, e.g 131071.
> This is due to the way the session capacity is configured, particularly on
> 32bit systems. See more details (output, code, etc) from prior discussions on
> PROTON-2255 (raised when this was incorrectly thought to be a proton issue).
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