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<div class="local-toc"><ul>
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<li><a class="reference internal" href="#">ASIO port</a><ul>
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<li><a class="reference internal" href="#overview">Overview</a><ul>
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<li><a class="reference internal" href="#asio-documentation">ASIO documentation</a></li>
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<li><a class="reference internal" href="#supported-features">Supported features</a></li>
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<a href="https://github.com/espressif/esp-protocols/blob/319fce0/docs/en/index.rst" class="fa fa-github"> Edit on GitHub</a>
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<section id="asio-port">
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<h1>ASIO port<a class="headerlink" href="#asio-port" title="Permalink to this headline"></a></h1>
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<section id="overview">
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<h2>Overview<a class="headerlink" href="#overview" title="Permalink to this headline"></a></h2>
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<p>Asio is a cross-platform C++ library, see <a class="reference external" href="https://think-async.com/Asio/">https://think-async.com/Asio/</a>. It provides a consistent asynchronous model using a modern C++ approach.</p>
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<section id="asio-documentation">
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<h3>ASIO documentation<a class="headerlink" href="#asio-documentation" title="Permalink to this headline"></a></h3>
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<p>Please refer to the original asio documentation at <a class="reference external" href="https://think-async.com/Asio/Documentation">https://think-async.com/Asio/Documentation</a>.
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Asio also comes with a number of examples which could be find under Documentation/Examples on that web site.</p>
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</section>
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<section id="supported-features">
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<h3>Supported features<a class="headerlink" href="#supported-features" title="Permalink to this headline"></a></h3>
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<p>ESP platform port currently supports only network asynchronous socket operations; does not support serial port.
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SSL/TLS support is disabled by default and could be enabled in component configuration menu by choosing TLS library from</p>
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<ul class="simple">
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<li><p>mbedTLS with OpenSSL translation layer (default option)</p></li>
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<li><p>wolfSSL</p></li>
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</ul>
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<p>SSL support is very basic at this stage and it does include following features:</p>
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<ul class="simple">
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<li><p>Verification callbacks</p></li>
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<li><p>DH property files</p></li>
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<li><p>Certificates/private keys file APIs</p></li>
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</ul>
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<p>Internal asio settings for ESP include</p>
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<ul class="simple">
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<li><p>EXCEPTIONS are enabled in ASIO if enabled in menuconfig</p></li>
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<li><p>TYPEID is enabled in ASIO if enabled in menuconfig</p></li>
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</ul>
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</section>
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</section>
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<section id="application-example">
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<h2>Application Example<a class="headerlink" href="#application-example" title="Permalink to this headline"></a></h2>
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<p>ESP examples are based on standard asio <a class="reference external" href="https://github.com/espressif/esp-protocols/tree/319fce0/examples/../examples">examples </a>:</p>
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<ul class="simple">
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<li><p><a class="reference external" href="https://github.com/espressif/esp-protocols/tree/319fce0/examples/../examples/udp_echo_server">udp_echo_server </a></p></li>
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<li><p><a class="reference external" href="https://github.com/espressif/esp-protocols/tree/319fce0/examples/../examples/tcp_echo_server">tcp_echo_server </a></p></li>
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<li><p><a class="reference external" href="https://github.com/espressif/esp-protocols/tree/319fce0/examples/../examples/asio_chat">asio_chat </a></p></li>
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<li><p><a class="reference external" href="https://github.com/espressif/esp-protocols/tree/319fce0/examples/../examples/ssl_client_server">ssl_client_server </a></p></li>
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</ul>
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<p>Please refer to the specific example README.md for details</p>
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</section>
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<p>© Copyright 2016 - 2022, Espressif Systems (Shanghai) Co., Ltd.</p>
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