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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-4265] Require hello command + OP_MSG when &apos;loadBalanced=True&apos;</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-4265</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;This ticket was split from &lt;tt&gt;DRIVERS-2033&lt;/tt&gt;, please see that ticket for a detailed description. &lt;/p&gt;</description>
                <environment></environment>
        <key id="1967869">CDRIVER-4265</key>
            <summary>Require hello command + OP_MSG when &apos;loadBalanced=True&apos;</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13201">Fixed</resolution>
                                        <assignee username="ezra.chung@mongodb.com">Ezra Chung</assignee>
                                    <reporter username="dbeng-pm-bot">PM Bot</reporter>
                        <labels>
                    </labels>
                <created>Thu, 20 Jan 2022 21:36:16 +0000</created>
                <updated>Sat, 28 Oct 2023 11:28:13 +0000</updated>
                            <resolved>Wed, 3 May 2023 20:29:50 +0000</resolved>
                                                    <fixVersion>1.24.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5398878" author="xgen-internal-githook" created="Wed, 3 May 2023 20:28:51 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Ezra Chung&apos;, &apos;email&apos;: &apos;88335979+eramongodb@users.noreply.github.com&apos;, &apos;username&apos;: &apos;eramongodb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-4193&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;CDRIVER-4193&quot;&gt;&lt;del&gt;CDRIVER-4193&lt;/del&gt;&lt;/a&gt; Ensure OP_MSG for handshakes and fix RPC op_egress counters (#1256)&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Move SHM count function into mongoc-counters-private.h&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Declare test_framework_has_compressors in test-libmongoc.h&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Allow /counters/op_msg and /counters/op_compressed with auth&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Add _mongoc_rpc_op_egress_inc&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-4193&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;CDRIVER-4193&quot;&gt;&lt;del&gt;CDRIVER-4193&lt;/del&gt;&lt;/a&gt; RTT thread should also use hello if serverApi is given&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Do not increment RPC op_egress counters in mock server&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Add /counters/rpc/op_egress tests&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-4121&quot; title=&quot;Use OP_MSG to authenticate if server supports OP_MSG&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-4121&quot;&gt;&lt;del&gt;CDRIVER-4121&lt;/del&gt;&lt;/a&gt; Add /counters/rpc/egress/auth&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-4622&quot; title=&quot;OP_QUERY egress counter may overcount&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-4622&quot;&gt;&lt;del&gt;CDRIVER-4622&lt;/del&gt;&lt;/a&gt; RPC op_egress increment: mongoc_async_cmd_new -&amp;gt; mongoc_async_cmd_phase_send&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Add mongoc_&amp;lt;object&amp;gt;_uses_loadbalanced&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-4265&quot; title=&quot;Require hello command + OP_MSG when &amp;#39;loadBalanced=True&amp;#39;&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-4265&quot;&gt;&lt;del&gt;CDRIVER-4265&lt;/del&gt;&lt;/a&gt; Use OP_MSG for handshakes when loadBalanced=true&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Clarify meaning of RPC op_egress counters in documentation&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/f14370ea8130a645080dc6f78342f53b25ddb339&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/commit/f14370ea8130a645080dc6f78342f53b25ddb339&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
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                <issuelinks>
                            <issuelinktype id="10011">
                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="1967877">PHPC-2035</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10620">
                    <name>Issue split</name>
                                                                <inwardlinks description="split from">
                                                        </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="1902515">CDRIVER-4193</issuekey>
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                        <customfieldname>Upstream Changes Summary</customfieldname>
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                            <customfieldvalue>&lt;p&gt;DRIVERS-2033:&lt;br/&gt;
This ticket is an add-on to DRIVERS-1916. This ticket similarly specifies drivers must ensure that if load balancing mode is enabled, both &quot;hello&quot; and OP_MSG should be used for the connection handshake.&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 pseudocode implementation&lt;/a&gt; in the handshake spec.&lt;/p&gt;</customfieldvalue>

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