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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[CDRIVER-3528] An ismaster reply containing &quot;msg&quot; is considered a mongos regardless of the value</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-3528</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;A slight deviation from the SDAM spec, but in parsing an ismaster reply, libmongoc always considers the existence of the field &quot;msg&quot; to indicate the server is a mongos.&lt;/p&gt;

&lt;p&gt;But the &lt;a href=&quot;https://github.com/mongodb/specifications/blob/master/source/server-discovery-and-monitoring/server-discovery-and-monitoring.rst#type&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;SDAM spec&lt;/a&gt; is explicit in that the value should be &quot;isdbgrid&quot;.&lt;/p&gt;

&lt;p&gt;I don&apos;t believe there is any current bug that could surface from this, as I&apos;m not aware of servers ever reporting &quot;msg&quot; with another value. But it could foreseeably change (e.g. as suggested in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-3353&quot; title=&quot;ismaster should return a msg for a config server&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-3353&quot;&gt;SERVER-3353&lt;/a&gt;).&lt;br/&gt;
&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1141475">CDRIVER-3528</key>
            <summary>An ismaster reply containing &quot;msg&quot; is considered a mongos regardless of the value</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="13201">Fixed</resolution>
                                        <assignee username="kevin.albertson@mongodb.com">Kevin Albertson</assignee>
                                    <reporter username="kevin.albertson@mongodb.com">Kevin Albertson</reporter>
                        <labels>
                    </labels>
                <created>Sun, 9 Feb 2020 22:53:21 +0000</created>
                <updated>Sat, 28 Oct 2023 11:28:56 +0000</updated>
                            <resolved>Wed, 12 Feb 2020 21:44:56 +0000</resolved>
                                                    <fixVersion>1.17.0-beta</fixVersion>
                    <fixVersion>1.17.0</fixVersion>
                                    <component>libmongoc</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2875135" author="xgen-internal-githook" created="Wed, 12 Feb 2020 21:44:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;kevinAlbs&apos;, &apos;name&apos;: &apos;Kevin Albertson&apos;, &apos;email&apos;: &apos;kevin.albertson@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-3528&quot; title=&quot;An ismaster reply containing &amp;quot;msg&amp;quot; is considered a mongos regardless of the value&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-3528&quot;&gt;&lt;del&gt;CDRIVER-3528&lt;/del&gt;&lt;/a&gt; check value of msg in ismaster reply&lt;/p&gt;

&lt;p&gt;SDAM mandates that a server is considered mongos if msg is set in the&lt;br/&gt;
ismaster reply and set to the value &apos;isdbgrid&apos;. libmongoc was&lt;br/&gt;
only checking for the existence of &apos;msg&apos;.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/f519c751667c045e32bb845f3974e757cf76dba7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/commit/f519c751667c045e32bb845f3974e757cf76dba7&lt;/a&gt;&lt;/p&gt;</comment>
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