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26 <div class="titlepage"><div><div><h3 class="title">
27 <a name="boost_asio.reference.transfer_all"></a><a class="link" href="transfer_all.html" title="transfer_all">transfer_all</a>
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31 Return a completion condition function object that indicates
32 that a read or write operation should continue until all of the data has
33 been transferred, or until an error occurs.
35 <pre class="programlisting"><span class="identifier">unspecified</span> <span class="identifier">transfer_all</span><span class="special">();</span>
38 This function is used to create an object, of unspecified type, that meets
39 CompletionCondition requirements.
42 <a name="boost_asio.reference.transfer_all.h0"></a>
43 <span class="phrase"><a name="boost_asio.reference.transfer_all.example"></a></span><a class="link" href="transfer_all.html#boost_asio.reference.transfer_all.example">Example</a>
46 Reading until a buffer is full:
48 <pre class="programlisting"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">array</span><span class="special"><</span><span class="keyword">char</span><span class="special">,</span> <span class="number">128</span><span class="special">></span> <span class="identifier">buf</span><span class="special">;</span>
49 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">error_code</span> <span class="identifier">ec</span><span class="special">;</span>
50 <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">n</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">read</span><span class="special">(</span>
51 <span class="identifier">sock</span><span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">buffer</span><span class="special">(</span><span class="identifier">buf</span><span class="special">),</span>
52 <span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">transfer_all</span><span class="special">(),</span> <span class="identifier">ec</span><span class="special">);</span>
53 <span class="keyword">if</span> <span class="special">(</span><span class="identifier">ec</span><span class="special">)</span>
54 <span class="special">{</span>
55 <span class="comment">// An error occurred.</span>
56 <span class="special">}</span>
57 <span class="keyword">else</span>
58 <span class="special">{</span>
59 <span class="comment">// n == 128</span>
60 <span class="special">}</span>
63 <a name="boost_asio.reference.transfer_all.h1"></a>
64 <span class="phrase"><a name="boost_asio.reference.transfer_all.requirements"></a></span><a class="link" href="transfer_all.html#boost_asio.reference.transfer_all.requirements">Requirements</a>
67 <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/completion_condition.hpp</code>
70 <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
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