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<td valign="middle" style="color: #FFFFFF" nowrap="nowrap"><font size="6">Aedis 0.2.1</font>   <br> High level Redis client library </td>
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<li class="navelem"><a class="el" href="dir_d28a4824dc47e487b107a5db32ef43c4.html">examples</a></li> </ul>
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<div class="title">echo_server.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* Copyright (c) 2018-2022 Marcelo Zimbres Silva (mzimbres@gmail.com)</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Distributed under the Boost Software License, Version 1.0. (See</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * accompanying file LICENSE.txt)</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>  </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//#define BOOST_ASIO_HAS_IO_URING</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">//#define BOOST_ASIO_DISABLE_EPOLL</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  </div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <string></span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <iostream></span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <boost/asio.hpp></span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <aedis/aedis.hpp></span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <aedis/src.hpp></span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span>net = boost::asio;</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">using</span> aedis::adapt;</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">using</span> <a class="code" href="classaedis_1_1resp3_1_1request.html">aedis::resp3::request</a>;</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">using</span> tcp_socket = net::use_awaitable_t<>::as_default_on_t<net::ip::tcp::socket>;</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">using</span> tcp_acceptor = net::use_awaitable_t<>::as_default_on_t<net::ip::tcp::acceptor>;</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">using</span> <a class="code" href="classaedis_1_1connection.html">connection</a> = <a class="code" href="classaedis_1_1connection.html">aedis::connection<tcp_socket></a>;</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> net::awaitable<void> echo_loop(tcp_socket socket, std::shared_ptr<connection> db)</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <a class="code" href="classaedis_1_1resp3_1_1request.html">request</a> req;</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  std::tuple<std::string> resp;</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  std::string buffer;</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordflow">for</span> (;;) {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">auto</span> n = co_await net::async_read_until(socket, net::dynamic_buffer(buffer, 1024), <span class="stringliteral">"\n"</span>);</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  req.<a class="code" href="classaedis_1_1resp3_1_1request.html#ae9cfe90ea55427d5345846f80b70be1b">push</a>(<span class="stringliteral">"PING"</span>, buffer);</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  co_await db->async_exec(req, adapt(resp));</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  co_await net::async_write(socket, net::buffer(std::get<0>(resp)));</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  std::get<0>(resp).clear();</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  req.<a class="code" href="classaedis_1_1resp3_1_1request.html#a92da0407e160354a4d81510f098cecd1">clear</a>();</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  buffer.erase(0, n);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  }</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  } <span class="keywordflow">catch</span> (std::exception <span class="keyword">const</span>& e) {</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  std::cout << e.what() << std::endl;</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  }</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> }</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  </div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> net::awaitable<void> listener()</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">auto</span> ex = co_await net::this_coro::executor;</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">auto</span> db = std::make_shared<connection>(ex);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  db->async_run(<span class="stringliteral">"127.0.0.1"</span>, <span class="stringliteral">"6379"</span>, net::detached);</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="classaedis_1_1resp3_1_1request.html">request</a> req;</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  req.<a class="code" href="classaedis_1_1resp3_1_1request.html#ae9cfe90ea55427d5345846f80b70be1b">push</a>(<span class="stringliteral">"HELLO"</span>, 3);</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  co_await db->async_exec(req);</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  tcp_acceptor acc(ex, {net::ip::tcp::v4(), 55555});</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">for</span> (;;)</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  net::co_spawn(ex, echo_loop(co_await acc.async_accept(), db), net::detached);</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> }</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  </div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keywordtype">int</span> main()</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> {</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  net::io_context ioc;</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  co_spawn(ioc, listener(), net::detached);</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  ioc.run();</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  } <span class="keywordflow">catch</span> (std::exception <span class="keyword">const</span>& e) {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  std::cerr << e.what() << std::endl;</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> }</div>
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<div class="ttc" id="aclassaedis_1_1connection_html"><div class="ttname"><a href="classaedis_1_1connection.html">aedis::connection</a></div><div class="ttdoc">A high level Redis connection class.</div><div class="ttdef"><b>Definition:</b> <a href="connection_8hpp_source.html#l00038">connection.hpp:38</a></div></div>
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<div class="ttc" id="aclassaedis_1_1resp3_1_1request_html"><div class="ttname"><a href="classaedis_1_1resp3_1_1request.html">aedis::resp3::request</a></div><div class="ttdoc">Creates Redis requests from user data.</div><div class="ttdef"><b>Definition:</b> <a href="request_8hpp_source.html#l00044">request.hpp:44</a></div></div>
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<div class="ttc" id="aclassaedis_1_1resp3_1_1request_html_a92da0407e160354a4d81510f098cecd1"><div class="ttname"><a href="classaedis_1_1resp3_1_1request.html#a92da0407e160354a4d81510f098cecd1">aedis::resp3::request::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Clears the request preserving allocated memory.</div><div class="ttdef"><b>Definition:</b> <a href="request_8hpp_source.html#l00053">request.hpp:53</a></div></div>
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<div class="ttc" id="aclassaedis_1_1resp3_1_1request_html_ae9cfe90ea55427d5345846f80b70be1b"><div class="ttname"><a href="classaedis_1_1resp3_1_1request.html#ae9cfe90ea55427d5345846f80b70be1b">aedis::resp3::request::push</a></div><div class="ttdeci">void push(boost::string_view cmd, Ts const &... args)</div><div class="ttdoc">Appends a new command to the end of the request.</div><div class="ttdef"><b>Definition:</b> <a href="request_8hpp_source.html#l00075">request.hpp:75</a></div></div>
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