Fix failing TestTimedHandler unit test. #12470
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This is failing due to a merge conflict between project-chip#11988 and project-chip#12389: the latter ends up in an error state as described in project-chip#12466 (comment) and the former makes our code a lot more sensitive to being in that error state. The fix for the test is to not use the sync mode of loopback transport, which allows the stack for sending a message to unwind before responses are delivered and avoids the "object deleted by response while we are still working with it" problem described in project-chip#12466 (comment). When the responses were made async, it turned out the test was missing some "expect response" flags that should have been there all along and it was only passing because the response happened before the send could get to the "close the exchange" stage. With async responses, exchanges were closing too early without the "expect response" flags. Separately we should figure out which parts of project-chip#12466 we should do.
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PR #12470: Size comparison from 7b214c9 to 6408b68 Increases (25 builds for efr32, esp32, k32w, linux, mbed, p6, qpg, telink)
Full report (29 builds for efr32, esp32, k32w, linux, mbed, p6, qpg, telink)
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Dec 2, 2021
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This is failing due to a merge conflict between
#11988 and
#12389: the latter
ends up in an error state as described in
#12466 (comment)
and the former makes our code a lot more sensitive to being in that
error state.
The fix for the test is to not use the sync mode of loopback
transport, which allows the stack for sending a message to unwind
before responses are delivered and avoids the "object deleted by
response while we are still working with it" problem described in
#12466 (comment).
When the responses were made async, it turned out the test was missing
some "expect response" flags that should have been there all along and
it was only passing because the response happened before the send
could get to the "close the exchange" stage. With async responses,
exchanges were closing too early without the "expect response" flags.
Separately we should figure out which parts of
#12466 we should
do.