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https://issues.apache.org/jira/browse/QPID-3291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gordon Sim resolved QPID-3291.
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Resolution: Fixed
> Broker incorrectly sets TTL to 0 for messages about to expire
> -------------------------------------------------------------
>
> Key: QPID-3291
> URL: https://issues.apache.org/jira/browse/QPID-3291
> Project: Qpid
> Issue Type: Bug
> Components: C++ Broker
> Reporter: Andy Goldstein
> Attachments: QPID-3291.patch
>
>
> When qpid::broker::Message::adjustTtl() is called prior to delivering a
> message to a peer, it adjusts the TTL down to reflect the time the message
> spent in the broker. For a message that has expired, it sets the TTL to 1.
> The current logic calculates the remaining TTL as the difference, in
> nanoseconds, between the current time and the expiration time. If this value
> is greater than 0, it converts the remaining TTL to milliseconds and sets it
> on the message; otherwise, it sets the TTL to 1.
> This logic could result in a message that is about to expire receiving a TTL
> of 0. This would occur if the remaining TTL is somewhere between 1 and
> 1,000,000 ns. When the division occurs to convert to ms, it would result in
> some number between 0 and 1, which is rounded down to 0. Instead, this value
> should be 1.
> To fix this, the remaining TTL should be compared against 1,000,000. If it
> is >= to that number, then the conversion can proceed successfully;
> otherwise, the TTL should be set to 1.
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