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<link rel="alternate" type="application/atom+xml" href="/en/forth-blog/atom.xml" title="RocketMQ Blog Atom Feed"><title data-react-helmet="true">Release Notes - Apache RocketMQ Client CPP- Version 2.1.0 | RocketMQ</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://your-docusaurus-test-site.com/en/third-blog/2020/03/23/release-notes-rocketmq-client-cpp-2.1.0"><meta data-react-helmet="true" name="docsearch:language" content="en"><meta data-react-helmet="true" name="docsearch:docusaurus_tag" content="default"><meta data-react-helmet="true" property="og:title" content="Release Notes - Apache RocketMQ Client CPP- Version 2.1.0 | RocketMQ"><meta data-react-helmet="true" name="description" content="* Source: rocketmq-client-cpp-2.1.0-source-release.tar.gz [PGP] [SHA512]"><meta data-react-helmet="true" property="og:description" content="* Source: rocketmq-client-cpp-2.1.0-source-release.tar.gz [PGP] [SHA512]"><meta data-react-helmet="true" property="og:type" content="article"><meta data-react-helmet="true" property="article:published_time" content="2020-03-23T00:00:00.000Z"><meta data-react-helmet="true" property="article:tag" content="RocketMQ_Client_CPP"><link data-react-helmet="true" rel="shortcut icon" href="/en/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://your-docusaurus-test-site.com/en/third-blog/2020/03/23/release-notes-rocketmq-client-cpp-2.1.0"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/third-blog/2020/03/23/release-notes-rocketmq-client-cpp-2.1.0" hreflang="zh"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/en/third-blog/2020/03/23/release-notes-rocketmq-client-cpp-2.1.0" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://your-docusaurus-test-site.com/third-blog/2020/03/23/release-notes-rocketmq-client-cpp-2.1.0" hreflang="x-default"><link data-react-helmet="true" rel="preconnect" href="https://R2IYF7ETH7-dsn.algolia.net" crossorigin="anonymous"><link rel="stylesheet" href="/en/assets/css/styles.e6d83517.css">
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itemprop="articleBody"><div class="admonition admonition-tip alert alert--success"><div class="admonition-heading"><h5><span class="admonition-icon"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="16" viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>Download</h5></div><div class="admonition-content"><ul><li>Source: <a href="https://archive.apache.org/dist/rocketmq/rocketmq-client-cpp/2.1.0/rocketmq-client-cpp-2.1.0-source-release.tar.gz" target="_blank" rel="noopener noreferrer">rocketmq-client-cpp-2.1.0-source-release.tar.gz</a> [<a href="https://archive.apache.org/dist/rocketmq/rocketmq-client-cpp/2.1.0/rocketmq-client-cpp-2.1.0-source-release.tar.gz.asc" target="_blank" rel="noopener noreferrer">PGP</a>] [<a href="https://archive.apache.org/dist/rocketmq/rocketmq-client-cpp/2.1.0/rocketmq-client-cpp-2.1.0-source-release.tar.gz.sha512" target="_blank" rel="noopener noreferrer">SHA512</a>]</li><li>Binary: <a href="https://archive.apache.org/dist/rocketmq/rocketmq-client-cpp/2.1.0/rocketmq-client-cpp-2.1.0-bin-release.tar.gz" target="_blank" rel="noopener noreferrer">rocketmq-client-cpp-2.1.0-bin-release.tar.gz</a> [<a href="https://archive.apache.org/dist/rocketmq/rocketmq-client-cpp/2.1.0/rocketmq-client-cpp-2.1.0-bin-release.tar.gz.asc" target="_blank" rel="noopener noreferrer">PGP</a>] [<a href="https://archive.apache.org/dist/rocketmq/rocketmq-client-cpp/2.1.0/rocketmq-client-cpp-2.1.0-bin-release.tar.gz.sha512" target="_blank" rel="noopener noreferrer">SHA512</a>]</li></ul></div></div><p>Below is a summary of the issues addressed in the version 2.1.0 release of RocketMQ Client CPP. For full documentation of the release, a guide to get started, please refer to <a href="https://github.com/apache/rocketmq-client-cpp" target="_blank" rel="noopener noreferrer">Quick Start</a>.</p><h2><a aria-hidden="true" tabindex="-1" class="anchor anchor__h2 anchorWithStickyNavbar_y2LR" id="improvement"></a>Improvement<a class="hash-link" href="#improvement" title="Direct link to heading">#</a></h2><ul><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/276" target="_blank" rel="noopener noreferrer">ISSUE-276</a>] - Add trace message for pub and sub.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/281" target="_blank" rel="noopener noreferrer">ISSUE-281</a>] - Add trace message shift for C style APIs.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/274" target="_blank" rel="noopener noreferrer">ISSUE-274</a>] - Fix the heap-use-after-free risk caused by direct deconstruction when it is not used after initialization.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/254" target="_blank" rel="noopener noreferrer">ISSUE-254</a>] - Add the script to package static lib on macOS.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/256" target="_blank" rel="noopener noreferrer">ISSUE-256</a>] - Update jsoncpp to 0.10.7 in order to fix build error by gcc7+.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/257" target="_blank" rel="noopener noreferrer">ISSUE-257</a>] - Add asan/lsan support, and formatting code.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/261" target="_blank" rel="noopener noreferrer">ISSUE-261</a>] - Add api to get SDK versions.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/242" target="_blank" rel="noopener noreferrer">ISSUE-242</a>] - Add some test cases for default producer implement.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/244" target="_blank" rel="noopener noreferrer">ISSUE-244</a>] - Add missed license header in some files.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/251" target="_blank" rel="noopener noreferrer">ISSUE-251</a>] - Remove warnings in header files.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/252" target="_blank" rel="noopener noreferrer">ISSUE-252</a>] - Use userdata to cache the local checker callback.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/258" target="_blank" rel="noopener noreferrer">ISSUE-258</a>] - Add regionId support in the send result.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/260" target="_blank" rel="noopener noreferrer">ISSUE-260</a>] - Add sharding key in the message property.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/265" target="_blank" rel="noopener noreferrer">ISSUE-265</a>] - Use dynamic cpu cores to compile code.</li></ul><h2><a aria-hidden="true" tabindex="-1" class="anchor anchor__h2 anchorWithStickyNavbar_y2LR" id="bug"></a>Bug<a class="hash-link" href="#bug" title="Direct link to heading">#</a></h2><ul><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/283" target="_blank" rel="noopener noreferrer">ISSUE-283</a>] - Send message back failed some time because the timeout was set too short.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/246" target="_blank" rel="noopener noreferrer">ISSUE-246</a>] - Fix the issue that failed to select transaction producer to call local state checker.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/248" target="_blank" rel="noopener noreferrer">ISSUE-248</a>] - Fix variable check error in the build script.</li><li>[<a href="https://github.com/apache/rocketmq-client-cpp/pull/241" target="_blank" rel="noopener noreferrer">ISSUE-241</a>] - Fix heap-buffer-overflow risk issues.</li></ul></div><footer class="row docusaurus-mt-lg 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