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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>
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<item>
            <title>[CDRIVER-2052] Correct connectTImeoutMS</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-2052</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;The C Driver&apos;s topology scanner has a hard limit of connectTimeoutMS that spans the period between calling mongoc_async_run to begin discovering, and when mongoc_async_run finishes. Some requests might begin in the middle of the call to mongoc_async_run, because we start checking a server newly discovered in the host list of an isMaster response immediately, but we don&apos;t reset the timer when we do so.&lt;/p&gt;

&lt;p&gt;This ignores connectTimeoutMS&apos;s purpose: it&apos;s not for limiting the duration of mongoc_async_run, it&apos;s for distinguishing between a server that&apos;s slow to respond vs. a server that&apos;s down.&lt;/p&gt;

&lt;p&gt;Track the duration of server checks per-server, instead of for the entire event loop. Let the loop run a bit longer to give newly discovered servers a fair timeout.&lt;/p&gt;

&lt;p&gt;Note, mongoc_async_run&apos;s original design tried to do this. Then it had an awkward phase when it enforced timeouts both per-server and for the entire function call. Then I rewrote it to only enforce the timeout for the whole function. That was a mistake, instead we should get rid of the whole-function timeout and only track timeouts per-server.&lt;/p&gt;</description>
                <environment></environment>
        <key id="353813">CDRIVER-2052</key>
            <summary>Correct connectTImeoutMS</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</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="9">Done</resolution>
                                        <assignee username="jesse@mongodb.com">A. Jesse Jiryu Davis</assignee>
                                    <reporter username="jesse@mongodb.com">A. Jesse Jiryu Davis</reporter>
                        <labels>
                    </labels>
                <created>Tue, 14 Feb 2017 19:10:49 +0000</created>
                <updated>Wed, 3 May 2017 22:14:58 +0000</updated>
                            <resolved>Tue, 28 Feb 2017 16:38:36 +0000</resolved>
                                    <version>1.2</version>
                                    <fixVersion>1.7.0</fixVersion>
                                    <component>libmongoc</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="1511297" author="xgen-internal-githook" created="Tue, 28 Feb 2017 15:49:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;ajdavis&apos;, u&apos;name&apos;: u&apos;A. Jesse Jiryu Davis&apos;, u&apos;email&apos;: u&apos;jesse@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-2052&quot; title=&quot;Correct connectTImeoutMS&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-2052&quot;&gt;&lt;del&gt;CDRIVER-2052&lt;/del&gt;&lt;/a&gt; measure connectTimeoutMS per server&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/930ab068a85156b68edba445d20b2082b3bc5ee4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/commit/930ab068a85156b68edba445d20b2082b3bc5ee4&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1504830" author="jesse" created="Tue, 21 Feb 2017 13:32:00 +0000"  >&lt;p&gt;Before finishing this ticket, change the int32_t mongoc_async_cmd_t.timeout_msec to int64_t mongoc_async_cmd_t.connect_timeout_usec. Simpler math, clearer purpose.&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="299266">PHPC-723</issuekey>
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