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    <title>MongoDB Jira</title>
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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[GODRIVER-2192] Require hello command for connection handshake to use OP_MSG, disallowing OP_QUERY</title>
                <link>https://jira.mongodb.org/browse/GODRIVER-2192</link>
                <project id="14289" key="GODRIVER">Go Driver</project>
                    <description>&lt;p&gt;This ticket was split from DRIVERS-1916, please see that ticket for a detailed description. &lt;/p&gt;</description>
                <environment></environment>
        <key id="1902518">GODRIVER-2192</key>
            <summary>Require hello command for connection handshake to use OP_MSG, disallowing OP_QUERY</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="benji.rewis@mongodb.com">Benji Rewis</assignee>
                                    <reporter username="dbeng-pm-bot">PM Bot</reporter>
                        <labels>
                            <label>size-xsmall</label>
                    </labels>
                <created>Tue, 19 Oct 2021 19:41:42 +0000</created>
                <updated>Thu, 27 Jan 2022 19:47:09 +0000</updated>
                            <resolved>Thu, 27 Jan 2022 19:47:09 +0000</resolved>
                                                    <fixVersion>1.9.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4319265" author="xgen-internal-githook" created="Thu, 27 Jan 2022 19:46:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benjamin Rewis&apos;, &apos;email&apos;: &apos;32186188+benjirewis@users.noreply.github.com&apos;, &apos;username&apos;: &apos;benjirewis&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/GODRIVER-2120&quot; title=&quot;Use OP_MSG to authenticate if server supports OP_MSG&quot; class=&quot;issue-link&quot; data-issue-key=&quot;GODRIVER-2120&quot;&gt;&lt;del&gt;GODRIVER-2120&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/GODRIVER-2192&quot; title=&quot;Require hello command for connection handshake to use OP_MSG, disallowing OP_QUERY&quot; class=&quot;issue-link&quot; data-issue-key=&quot;GODRIVER-2192&quot;&gt;&lt;del&gt;GODRIVER-2192&lt;/del&gt;&lt;/a&gt; Ensure OP_QUERY is only used when necessary (#843)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/commit/9ae6ccf0bde4e06fb5cbbef5867df4887f4e3dd1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/commit/9ae6ccf0bde4e06fb5cbbef5867df4887f4e3dd1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4316312" author="benji.rewis" created="Wed, 26 Jan 2022 18:49:05 +0000"  >&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo-go-driver/pull/843&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-go-driver/pull/843&lt;/a&gt;&lt;/p&gt;</comment>
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                        <customfieldname>Upstream Changes Summary</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>&lt;p&gt;DRIVERS-1916:&lt;br/&gt;
This ticket does two things:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;It clarifies that if the &quot;hello&quot; command is used (as opposed to &quot;isMaster&quot;) it must be sent using OP_MSG&lt;/li&gt;
	&lt;li&gt;Because &lt;a href=&quot;https://github.com/mongodb/specifications/blob/63b0451b4969f6bf7464e8d86d78b7552f65ba58/source/mongodb-handshake/handshake.rst#connection-handshake&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the previous version of the spec&lt;/a&gt; already required that if a versioned API is specified, &quot;hello&quot; must be used, it is made explicit that this also means OP_MSG must be used.&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;Drivers must ensure that their connection handshake uses both OP_MSG and &quot;hello&quot; if a versioned API is specified.&lt;br/&gt;
 For an example of what your connection process should look like after this change, take a look at the &lt;a href=&quot;https://github.com/mongodb/specifications/blob/master/source/mongodb-handshake/handshake.rst#connection-handshake&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Python implementation&lt;/a&gt; in the handshake spec.&lt;/p&gt;</customfieldvalue>

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