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iequidoo
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This prevents calls to poll_next()
from reaching the underlying stream
after an error is returned once.
Previously calls to poll_next()
to ImapStream built on top
of a network connection
could have returned infinite
stream of Some(Err(_))
values.
This is dangerous
for the code that looks for the end
of stream without processing
errors such as
`while stream.next().await.is_some() {}`
because it may result in
infinite loop.
It is still better to process
errors by writing
`while stream.try_next().await?.is_some() {}`,
but the change protects
in case of incorrect library user code.
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I have added a test now. |
iequidoo
approved these changes
Aug 3, 2025
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This prevents calls to poll_next()
from reaching the underlying stream
after an error is returned once.
Previously calls to poll_next()
to ImapStream built on top
of a network connection
could have returned infinite
stream of Some(Err(_))
values.
This is dangerous
for the code that looks for the end
of stream without processing
errors such as
while stream.next().await.is_some() {}because it may result in
infinite loop.
It is still better to process
errors by writing
while stream.try_next().await?.is_some() {},but the change protects
in case of incorrect library user code.