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            <title>[SERVER-930] Flow control for ASIO</title>
                <link>https://jira.mongodb.org/browse/SERVER-930</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently we are relying on TCP for flow control. We will need to work something else out before we can switch to ASIO.&lt;/p&gt;</description>
                <environment></environment>
        <key id="11023">SERVER-930</key>
            <summary>Flow control for ASIO</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-server-servicearch">Backlog - Service Architecture</assignee>
                                    <reporter username="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
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                <created>Fri, 18 Dec 2009 16:44:45 +0000</created>
                <updated>Tue, 6 Dec 2022 05:49:54 +0000</updated>
                            <resolved>Tue, 2 Nov 2021 15:29:53 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>1</votes>
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                                                                                                                <comments>
                            <comment id="4163444" author="JIRAUSER1262719" created="Tue, 2 Nov 2021 15:29:53 +0000"  >&lt;p&gt;The Service Arch team is in the process of cleaning up tickets in the backlog. This ticket has not been updated in two years so we are closing it. Please reopen if you think this change is valuable.&lt;/p&gt;</comment>
                            <comment id="1162328" author="dwight_10gen" created="Wed, 3 Feb 2016 15:18:48 +0000"  >&lt;p&gt;@mathias would you not get WOULDBLOCK from the OS in that situation and could select for that to clear?  Long time since I have used that stuff.&lt;/p&gt;

&lt;p&gt;(Not that doing the above isn&apos;t quite involved if you are in middle of a long sequence of code.  Although IIRC the main client/server message loop gets out of locks before doing a send for this reason, so maybe it isn&apos;t too bad usually.) &lt;/p&gt;

&lt;p&gt;Variation is if empirically this is not a big problem, just let it block and implementation is a hybrid of async and synchronous.  Just need some dynanism to thread pool size.&lt;/p&gt;</comment>
                            <comment id="13928" author="eliot" created="Wed, 28 Apr 2010 15:41:00 +0000"  >&lt;p&gt;deferring asio for now&lt;/p&gt;</comment>
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