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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
    </build-info>


<item>
            <title>[CDRIVER-4047] SRV rescan interval incorrectly computes TTL and minimum time</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-4047</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;The &lt;a href=&quot;https://github.com/mongodb/specifications/blob/3a8cf8815ab81a8aa9f869ed28a6e6fdd10a4905/source/polling-srv-records-for-mongos-discovery/polling-srv-records-for-mongos-discovery.rst#implementation&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;SRV polling specification&lt;/a&gt; states:&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt; The rescanSRVIntervalMS value MUST be set to the lowest of the individual TTL values associated with the different SRV records in the most recent rescan, but MUST NOT be lower than 60 seconds. If a driver is unable to access the TTL values of SRV records, it MUST rescan every 60 seconds.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;libmongoc currently calculates the rescan interval as follows:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;topology-&amp;gt;srv_polling_rescan_interval_ms = BSON_MAX (&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;      rr_data.min_ttl * 1000, MONGOC_TOPOLOGY_MIN_RESCAN_SRV_INTERVAL_MS);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;The calculation should be the minimum.&lt;/li&gt;
	&lt;li&gt;Test that the behavior is fixed by mocking SRV responses with a short TTL.&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1802390">CDRIVER-4047</key>
            <summary>SRV rescan interval incorrectly computes TTL and minimum time</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="10300" iconUrl="https://jira.mongodb.org/images/icons/priorities/medium.svg">Unknown</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13202">Works as Designed</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="kevin.albertson@mongodb.com">Kevin Albertson</reporter>
                        <labels>
                    </labels>
                <created>Tue, 29 Jun 2021 15:16:44 +0000</created>
                <updated>Fri, 27 Oct 2023 13:14:07 +0000</updated>
                            <resolved>Tue, 6 Jul 2021 19:24:14 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>1</watches>
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