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<div class="section" id="asio-http2-client-h">
<h1>asio_http2_client.h<a class="headerlink" href="#asio-http2-client-h" title="Permalink to this headline">¶</a></h1>
<div class="highlight-cpp notranslate"><div class="highlight"><pre><span></span><span class="cm">/*</span>
<span class="cm"> * nghttp2 - HTTP/2 C Library</span>
<span class="cm"> *</span>
<span class="cm"> * Copyright (c) 2015 Tatsuhiro Tsujikawa</span>
<span class="cm"> *</span>
<span class="cm"> * Permission is hereby granted, free of charge, to any person obtaining</span>
<span class="cm"> * a copy of this software and associated documentation files (the</span>
<span class="cm"> * "Software"), to deal in the Software without restriction, including</span>
<span class="cm"> * without limitation the rights to use, copy, modify, merge, publish,</span>
<span class="cm"> * distribute, sublicense, and/or sell copies of the Software, and to</span>
<span class="cm"> * permit persons to whom the Software is furnished to do so, subject to</span>
<span class="cm"> * the following conditions:</span>
<span class="cm"> *</span>
<span class="cm"> * The above copyright notice and this permission notice shall be</span>
<span class="cm"> * included in all copies or substantial portions of the Software.</span>
<span class="cm"> *</span>
<span class="cm"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,</span>
<span class="cm"> * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span>
<span class="cm"> * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND</span>
<span class="cm"> * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE</span>
<span class="cm"> * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION</span>
<span class="cm"> * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION</span>
<span class="cm"> * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</span>
<span class="cm"> */</span>
<span class="cp">#ifndef ASIO_HTTP2_CLIENT_H</span>
<span class="cp">#define ASIO_HTTP2_CLIENT_H</span>
<span class="cp">#include</span> <span class="cpf"><nghttp2/asio_http2.h></span><span class="cp"></span>
<span class="k">namespace</span> <span class="n">nghttp2</span> <span class="p">{</span>
<span class="k">namespace</span> <span class="n">asio_http2</span> <span class="p">{</span>
<span class="k">namespace</span> <span class="n">client</span> <span class="p">{</span>
<span class="k">class</span> <span class="nc">response_impl</span><span class="p">;</span>
<span class="k">class</span> <span class="nc">response</span> <span class="p">{</span>
<span class="k">public</span><span class="o">:</span>
<span class="c1">// Application must not call this directly.</span>
<span class="n">response</span><span class="p">();</span>
<span class="o">~</span><span class="n">response</span><span class="p">();</span>
<span class="c1">// Sets callback which is invoked when chunk of response body is</span>
<span class="c1">// received.</span>
<span class="kt">void</span> <span class="nf">on_data</span><span class="p">(</span><span class="n">data_cb</span> <span class="n">cb</span><span class="p">)</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Returns status code.</span>
<span class="kt">int</span> <span class="nf">status_code</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Returns content-length. -1 if it is unknown.</span>
<span class="kt">int64_t</span> <span class="nf">content_length</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Returns the response header fields. The pusedo header fields,</span>
<span class="c1">// which start with colon (:), are exluced from this list.</span>
<span class="k">const</span> <span class="n">header_map</span> <span class="o">&</span><span class="n">header</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Application must not call this directly.</span>
<span class="n">response_impl</span> <span class="o">&</span><span class="n">impl</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="k">private</span><span class="o">:</span>
<span class="n">std</span><span class="o">::</span><span class="n">unique_ptr</span><span class="o"><</span><span class="n">response_impl</span><span class="o">></span> <span class="n">impl_</span><span class="p">;</span>
<span class="p">};</span>
<span class="k">class</span> <span class="nc">request</span><span class="p">;</span>
<span class="k">using</span> <span class="n">response_cb</span> <span class="o">=</span> <span class="n">std</span><span class="o">::</span><span class="n">function</span><span class="o"><</span><span class="kt">void</span><span class="p">(</span><span class="k">const</span> <span class="n">response</span> <span class="o">&</span><span class="p">)</span><span class="o">></span><span class="p">;</span>
<span class="k">using</span> <span class="n">request_cb</span> <span class="o">=</span> <span class="n">std</span><span class="o">::</span><span class="n">function</span><span class="o"><</span><span class="kt">void</span><span class="p">(</span><span class="k">const</span> <span class="n">request</span> <span class="o">&</span><span class="p">)</span><span class="o">></span><span class="p">;</span>
<span class="k">using</span> <span class="n">connect_cb</span> <span class="o">=</span>
<span class="n">std</span><span class="o">::</span><span class="n">function</span><span class="o"><</span><span class="kt">void</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">ip</span><span class="o">::</span><span class="n">tcp</span><span class="o">::</span><span class="n">resolver</span><span class="o">::</span><span class="n">iterator</span><span class="p">)</span><span class="o">></span><span class="p">;</span>
<span class="k">class</span> <span class="nc">request_impl</span><span class="p">;</span>
<span class="k">class</span> <span class="nc">request</span> <span class="p">{</span>
<span class="k">public</span><span class="o">:</span>
<span class="c1">// Application must not call this directly.</span>
<span class="n">request</span><span class="p">();</span>
<span class="o">~</span><span class="n">request</span><span class="p">();</span>
<span class="c1">// Sets callback which is invoked when response header is received.</span>
<span class="kt">void</span> <span class="nf">on_response</span><span class="p">(</span><span class="n">response_cb</span> <span class="n">cb</span><span class="p">)</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Sets callback which is invoked when push request header is</span>
<span class="c1">// received.</span>
<span class="kt">void</span> <span class="nf">on_push</span><span class="p">(</span><span class="n">request_cb</span> <span class="n">cb</span><span class="p">)</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Sets callback which is invoked when this request and response are</span>
<span class="c1">// finished. After the invocation of this callback, the application</span>
<span class="c1">// must not access request and response object.</span>
<span class="kt">void</span> <span class="nf">on_close</span><span class="p">(</span><span class="n">close_cb</span> <span class="n">cb</span><span class="p">)</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Write trailer part. This must be called after setting both</span>
<span class="c1">// NGHTTP2_DATA_FLAG_EOF and NGHTTP2_DATA_FLAG_NO_END_STREAM set in</span>
<span class="c1">// *data_flag parameter in generator_cb passed to session::submit()</span>
<span class="c1">// function.</span>
<span class="kt">void</span> <span class="nf">write_trailer</span><span class="p">(</span><span class="n">header_map</span> <span class="n">h</span><span class="p">)</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Cancels this request and response with given error code.</span>
<span class="kt">void</span> <span class="nf">cancel</span><span class="p">(</span><span class="kt">uint32_t</span> <span class="n">error_code</span> <span class="o">=</span> <span class="n">NGHTTP2_INTERNAL_ERROR</span><span class="p">)</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Resumes deferred uploading.</span>
<span class="kt">void</span> <span class="nf">resume</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Returns method (e.g., GET).</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">method</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Returns request URI, split into components.</span>
<span class="k">const</span> <span class="n">uri_ref</span> <span class="o">&</span><span class="n">uri</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Returns request header fields. The pusedo header fields, which</span>
<span class="c1">// start with colon (:), are exluced from this list.</span>
<span class="k">const</span> <span class="n">header_map</span> <span class="o">&</span><span class="n">header</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Application must not call this directly.</span>
<span class="n">request_impl</span> <span class="o">&</span><span class="n">impl</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="k">private</span><span class="o">:</span>
<span class="n">std</span><span class="o">::</span><span class="n">unique_ptr</span><span class="o"><</span><span class="n">request_impl</span><span class="o">></span> <span class="n">impl_</span><span class="p">;</span>
<span class="p">};</span>
<span class="c1">// Wrapper around an nghttp2_priority_spec.</span>
<span class="k">class</span> <span class="nc">priority_spec</span> <span class="p">{</span>
<span class="k">public</span><span class="o">:</span>
<span class="c1">// The default ctor is used only by sentinel values.</span>
<span class="n">priority_spec</span><span class="p">()</span> <span class="o">=</span> <span class="k">default</span><span class="p">;</span>
<span class="c1">// Create a priority spec with the given priority settings.</span>
<span class="k">explicit</span> <span class="nf">priority_spec</span><span class="p">(</span><span class="k">const</span> <span class="kt">int32_t</span> <span class="n">stream_id</span><span class="p">,</span> <span class="k">const</span> <span class="kt">int32_t</span> <span class="n">weight</span><span class="p">,</span>
<span class="k">const</span> <span class="kt">bool</span> <span class="n">exclusive</span> <span class="o">=</span> <span class="nb">false</span><span class="p">);</span>
<span class="c1">// Return a pointer to a valid nghttp2 priority spec, or null.</span>
<span class="k">const</span> <span class="n">nghttp2_priority_spec</span> <span class="o">*</span><span class="nf">get</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Indicates whether or not this spec is valid (i.e. was constructed with</span>
<span class="c1">// values).</span>
<span class="k">const</span> <span class="kt">bool</span> <span class="nf">valid</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="k">private</span><span class="o">:</span>
<span class="n">nghttp2_priority_spec</span> <span class="n">spec_</span><span class="p">;</span>
<span class="kt">bool</span> <span class="n">valid_</span> <span class="o">=</span> <span class="nb">false</span><span class="p">;</span>
<span class="p">};</span>
<span class="k">class</span> <span class="nc">session_impl</span><span class="p">;</span>
<span class="k">class</span> <span class="nc">session</span> <span class="p">{</span>
<span class="k">public</span><span class="o">:</span>
<span class="c1">// Starts HTTP/2 session by connecting to |host| and |service|</span>
<span class="c1">// (e.g., "80") using clear text TCP connection with connect timeout</span>
<span class="c1">// 60 seconds.</span>
<span class="n">session</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">io_service</span> <span class="o">&</span><span class="n">io_service</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">host</span><span class="p">,</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">service</span><span class="p">);</span>
<span class="c1">// Same as previous but with pegged local endpoint</span>
<span class="n">session</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">io_service</span> <span class="o">&</span><span class="n">io_service</span><span class="p">,</span>
<span class="k">const</span> <span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">ip</span><span class="o">::</span><span class="n">tcp</span><span class="o">::</span><span class="n">endpoint</span> <span class="o">&</span><span class="n">local_endpoint</span><span class="p">,</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">host</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">service</span><span class="p">);</span>
<span class="c1">// Starts HTTP/2 session by connecting to |host| and |service|</span>
<span class="c1">// (e.g., "80") using clear text TCP connection with given connect</span>
<span class="c1">// timeout.</span>
<span class="n">session</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">io_service</span> <span class="o">&</span><span class="n">io_service</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">host</span><span class="p">,</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">service</span><span class="p">,</span>
<span class="k">const</span> <span class="n">boost</span><span class="o">::</span><span class="n">posix_time</span><span class="o">::</span><span class="n">time_duration</span> <span class="o">&</span><span class="n">connect_timeout</span><span class="p">);</span>
<span class="c1">// Same as previous but with pegged local endpoint</span>
<span class="n">session</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">io_service</span> <span class="o">&</span><span class="n">io_service</span><span class="p">,</span>
<span class="k">const</span> <span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">ip</span><span class="o">::</span><span class="n">tcp</span><span class="o">::</span><span class="n">endpoint</span> <span class="o">&</span><span class="n">local_endpoint</span><span class="p">,</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">host</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">service</span><span class="p">,</span>
<span class="k">const</span> <span class="n">boost</span><span class="o">::</span><span class="n">posix_time</span><span class="o">::</span><span class="n">time_duration</span> <span class="o">&</span><span class="n">connect_timeout</span><span class="p">);</span>
<span class="c1">// Starts HTTP/2 session by connecting to |host| and |service|</span>
<span class="c1">// (e.g., "443") using encrypted SSL/TLS connection with connect</span>
<span class="c1">// timeout 60 seconds.</span>
<span class="n">session</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">io_service</span> <span class="o">&</span><span class="n">io_service</span><span class="p">,</span>
<span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">ssl</span><span class="o">::</span><span class="n">context</span> <span class="o">&</span><span class="n">tls_context</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">host</span><span class="p">,</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">service</span><span class="p">);</span>
<span class="c1">// Starts HTTP/2 session by connecting to |host| and |service|</span>
<span class="c1">// (e.g., "443") using encrypted SSL/TLS connection with given</span>
<span class="c1">// connect timeout.</span>
<span class="n">session</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">io_service</span> <span class="o">&</span><span class="n">io_service</span><span class="p">,</span>
<span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">ssl</span><span class="o">::</span><span class="n">context</span> <span class="o">&</span><span class="n">tls_context</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">host</span><span class="p">,</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">service</span><span class="p">,</span>
<span class="k">const</span> <span class="n">boost</span><span class="o">::</span><span class="n">posix_time</span><span class="o">::</span><span class="n">time_duration</span> <span class="o">&</span><span class="n">connect_timeout</span><span class="p">);</span>
<span class="o">~</span><span class="n">session</span><span class="p">();</span>
<span class="n">session</span><span class="p">(</span><span class="n">session</span> <span class="o">&&</span><span class="n">other</span><span class="p">)</span> <span class="k">noexcept</span><span class="p">;</span>
<span class="n">session</span> <span class="o">&</span><span class="k">operator</span><span class="o">=</span><span class="p">(</span><span class="n">session</span> <span class="o">&&</span><span class="n">other</span><span class="p">)</span> <span class="k">noexcept</span><span class="p">;</span>
<span class="c1">// Sets callback which is invoked after connection is established.</span>
<span class="kt">void</span> <span class="nf">on_connect</span><span class="p">(</span><span class="n">connect_cb</span> <span class="n">cb</span><span class="p">)</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Sets callback which is invoked there is connection level error</span>
<span class="c1">// and session is terminated.</span>
<span class="kt">void</span> <span class="nf">on_error</span><span class="p">(</span><span class="n">error_cb</span> <span class="n">cb</span><span class="p">)</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Sets read timeout, which defaults to 60 seconds.</span>
<span class="kt">void</span> <span class="nf">read_timeout</span><span class="p">(</span><span class="k">const</span> <span class="n">boost</span><span class="o">::</span><span class="n">posix_time</span><span class="o">::</span><span class="n">time_duration</span> <span class="o">&</span><span class="n">t</span><span class="p">);</span>
<span class="c1">// Shutdowns connection.</span>
<span class="kt">void</span> <span class="nf">shutdown</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Returns underlying io_service object.</span>
<span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">io_service</span> <span class="o">&</span><span class="n">io_service</span><span class="p">()</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Submits request to server using |method| (e.g., "GET"), |uri|</span>
<span class="c1">// (e.g., "http://localhost/") and optionally additional header</span>
<span class="c1">// fields. This function returns pointer to request object if it</span>
<span class="c1">// succeeds, or nullptr and |ec| contains error message.</span>
<span class="k">const</span> <span class="n">request</span> <span class="o">*</span><span class="nf">submit</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">system</span><span class="o">::</span><span class="n">error_code</span> <span class="o">&</span><span class="n">ec</span><span class="p">,</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">method</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">uri</span><span class="p">,</span>
<span class="n">header_map</span> <span class="n">h</span> <span class="o">=</span> <span class="n">header_map</span><span class="p">{},</span>
<span class="n">priority_spec</span> <span class="n">prio</span> <span class="o">=</span> <span class="n">priority_spec</span><span class="p">())</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Submits request to server using |method| (e.g., "GET"), |uri|</span>
<span class="c1">// (e.g., "http://localhost/") and optionally additional header</span>
<span class="c1">// fields. The |data| is request body. This function returns</span>
<span class="c1">// pointer to request object if it succeeds, or nullptr and |ec|</span>
<span class="c1">// contains error message.</span>
<span class="k">const</span> <span class="n">request</span> <span class="o">*</span><span class="nf">submit</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">system</span><span class="o">::</span><span class="n">error_code</span> <span class="o">&</span><span class="n">ec</span><span class="p">,</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">method</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">uri</span><span class="p">,</span>
<span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">data</span><span class="p">,</span> <span class="n">header_map</span> <span class="n">h</span> <span class="o">=</span> <span class="n">header_map</span><span class="p">{},</span>
<span class="n">priority_spec</span> <span class="n">prio</span> <span class="o">=</span> <span class="n">priority_spec</span><span class="p">())</span> <span class="k">const</span><span class="p">;</span>
<span class="c1">// Submits request to server using |method| (e.g., "GET"), |uri|</span>
<span class="c1">// (e.g., "http://localhost/") and optionally additional header</span>
<span class="c1">// fields. The |cb| is used to generate request body. This</span>
<span class="c1">// function returns pointer to request object if it succeeds, or</span>
<span class="c1">// nullptr and |ec| contains error message.</span>
<span class="k">const</span> <span class="n">request</span> <span class="o">*</span><span class="nf">submit</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">system</span><span class="o">::</span><span class="n">error_code</span> <span class="o">&</span><span class="n">ec</span><span class="p">,</span>
<span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">method</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&</span><span class="n">uri</span><span class="p">,</span>
<span class="n">generator_cb</span> <span class="n">cb</span><span class="p">,</span> <span class="n">header_map</span> <span class="n">h</span> <span class="o">=</span> <span class="n">header_map</span><span class="p">{},</span>
<span class="n">priority_spec</span> <span class="n">prio</span> <span class="o">=</span> <span class="n">priority_spec</span><span class="p">())</span> <span class="k">const</span><span class="p">;</span>
<span class="k">private</span><span class="o">:</span>
<span class="n">std</span><span class="o">::</span><span class="n">shared_ptr</span><span class="o"><</span><span class="n">session_impl</span><span class="o">></span> <span class="n">impl_</span><span class="p">;</span>
<span class="p">};</span>
<span class="c1">// configure |tls_ctx| for client use. Currently, we just set NPN</span>
<span class="c1">// callback for HTTP/2.</span>
<span class="n">boost</span><span class="o">::</span><span class="n">system</span><span class="o">::</span><span class="n">error_code</span>
<span class="n">configure_tls_context</span><span class="p">(</span><span class="n">boost</span><span class="o">::</span><span class="n">system</span><span class="o">::</span><span class="n">error_code</span> <span class="o">&</span><span class="n">ec</span><span class="p">,</span>
<span class="n">boost</span><span class="o">::</span><span class="n">asio</span><span class="o">::</span><span class="n">ssl</span><span class="o">::</span><span class="n">context</span> <span class="o">&</span><span class="n">tls_ctx</span><span class="p">);</span>
<span class="p">}</span> <span class="c1">// namespace client</span>
<span class="p">}</span> <span class="c1">// namespace asio_http2</span>
<span class="p">}</span> <span class="c1">// namespace nghttp2</span>
<span class="cp">#endif </span><span class="c1">// ASIO_HTTP2_CLIENT_H</span>
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