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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#GDataDownloadStream.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#GDataDownloadStream.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_interfaces">  <span class="dim">|</span> 
                  <a href="#GDataDownloadStream.implemented-interfaces" class="shortcut">Implemented Interfaces</a></span><span id="nav_properties">  <span class="dim">|</span> 
                  <a href="#GDataDownloadStream.properties" class="shortcut">Properties</a></span>
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<div class="refentry">
<a name="GDataDownloadStream"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="GDataDownloadStream.top_of_page"></a>GDataDownloadStream</span></h2>
<p>GDataDownloadStream — GData download stream object</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GDataDownloadStream.stability-level"></a><h2>Stability Level</h2>
<acronym title="The intention of a Stable interface is to enable arbitrary third parties to
develop applications to these interfaces, release them, and have confidence that
they will run on all minor releases of the product (after the one in which the
interface was introduced, and within the same major release). Even at a major
release, incompatible changes are expected to be rare, and to have strong
justifications.
"><span class="acronym">Stable</span></acronym>, unless otherwise indicated
</div>
<div class="refsect1">
<a name="GDataDownloadStream.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">GInputStream</span> *
</td>
<td class="function_name">
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-new" title="gdata_download_stream_new ()">gdata_download_stream_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GDataService.html" title="GDataService"><span class="returnvalue">GDataService</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-get-service" title="gdata_download_stream_get_service ()">gdata_download_stream_get_service</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="returnvalue">GDataAuthorizationDomain</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-get-authorization-domain" title="gdata_download_stream_get_authorization_domain ()">gdata_download_stream_get_authorization_domain</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">GCancellable</span> *
</td>
<td class="function_name">
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-get-cancellable" title="gdata_download_stream_get_cancellable ()">gdata_download_stream_get_cancellable</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="../glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-get-download-uri" title="gdata_download_stream_get_download_uri ()">gdata_download_stream_get_download_uri</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="../glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-get-content-type" title="gdata_download_stream_get_content_type ()">gdata_download_stream_get_content_type</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib/glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a>
</td>
<td class="function_name">
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-get-content-length" title="gdata_download_stream_get_content_length ()">gdata_download_stream_get_content_length</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDataDownloadStream.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type">
<a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="type">GDataAuthorizationDomain</span></a> *</td>
<td class="property_name"><a class="link" href="GDataDownloadStream.html#GDataDownloadStream--authorization-domain" title="The “authorization-domain” property">authorization-domain</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr>
<tr>
<td class="property_type">
<span class="type">GCancellable</span> *</td>
<td class="property_name"><a class="link" href="GDataDownloadStream.html#GDataDownloadStream--cancellable" title="The “cancellable” property">cancellable</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr>
<tr>
<td class="property_type"><a href="../glib/glib-Basic-Types.html#glong"><span class="type">glong</span></a></td>
<td class="property_name"><a class="link" href="GDataDownloadStream.html#GDataDownloadStream--content-length" title="The “content-length” property">content-length</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type">
<a href="../glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td>
<td class="property_name"><a class="link" href="GDataDownloadStream.html#GDataDownloadStream--content-type" title="The “content-type” property">content-type</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type">
<a href="../glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td>
<td class="property_name"><a class="link" href="GDataDownloadStream.html#GDataDownloadStream--download-uri" title="The “download-uri” property">download-uri</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr>
<tr>
<td class="property_type">
<a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a> *</td>
<td class="property_name"><a class="link" href="GDataDownloadStream.html#GDataDownloadStream--service" title="The “service” property">service</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDataDownloadStream.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GDataDownloadStream.html#GDataDownloadStream-struct" title="GDataDownloadStream">GDataDownloadStream</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GDataDownloadStream.html#GDataDownloadStreamClass" title="GDataDownloadStreamClass">GDataDownloadStreamClass</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDataDownloadStream.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="../gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
    <span class="lineart">╰──</span> GInputStream
        <span class="lineart">╰──</span> GDataDownloadStream
</pre>
</div>
<div class="refsect1">
<a name="GDataDownloadStream.implemented-interfaces"></a><h2>Implemented Interfaces</h2>
<p>
GDataDownloadStream implements
 GSeekable.</p>
</div>
<div class="refsect1">
<a name="GDataDownloadStream.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gdata/gdata-download-stream.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GDataDownloadStream.description"></a><h2>Description</h2>
<p><a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> is a <span class="type">GInputStream</span> subclass to allow downloading of files from GData services with authorization from a <a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a> under
the given <a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="type">GDataAuthorizationDomain</span></a>. If authorization is not required to perform the download, a <a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="type">GDataAuthorizationDomain</span></a> doesn't have to be
specified.</p>
<p>Once a <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> is instantiated with <a class="link" href="GDataDownloadStream.html#gdata-download-stream-new" title="gdata_download_stream_new ()"><code class="function">gdata_download_stream_new()</code></a>, the standard <span class="type">GInputStream</span> API can be used on the stream to download
the file. Network communication may not actually begin until the first call to <code class="function">g_input_stream_read()</code>, so having a <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> around is no
guarantee that the file is being downloaded.</p>
<p>The content type and length of the file being downloaded are made available through <a class="link" href="GDataDownloadStream.html#GDataDownloadStream--content-type" title="The “content-type” property"><span class="type">“content-type”</span></a> and
<a class="link" href="GDataDownloadStream.html#GDataDownloadStream--content-length" title="The “content-length” property"><span class="type">“content-length”</span></a> as soon as the appropriate data is received from the server. Connect to the
<a href="../gobject/gobject-The-Base-Object-Type.html#GObject-notify"><span class="type">“notify”</span></a> <code class="code">content-type</code> and <code class="code">content-length</code> details to be notified as
soon as the data is available.</p>
<p>The entire download operation can be cancelled using the <span class="type">GCancellable</span> instance provided to <a class="link" href="GDataDownloadStream.html#gdata-download-stream-new" title="gdata_download_stream_new ()"><code class="function">gdata_download_stream_new()</code></a>, or returned by
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-get-cancellable" title="gdata_download_stream_get_cancellable ()"><code class="function">gdata_download_stream_get_cancellable()</code></a>. Cancelling this at any time will cause all future <span class="type">GInputStream</span> method calls to return
<code class="literal">G_IO_ERROR_CANCELLED</code>. If any <span class="type">GInputStream</span> methods are in the process of being called, they will be cancelled and return <code class="literal">G_IO_ERROR_CANCELLED</code> as
soon as possible.</p>
<p>Note that cancelling an individual method call (such as a call to <code class="function">g_input_stream_read()</code>) using the <span class="type">GCancellable</span> parameter of the method will not
cancel the download as a whole — just that particular method call. In the case of <code class="function">g_input_stream_read()</code>, this will cause it to successfully return
any data that it has in memory at the moment (up to the requested number of bytes), or return a <code class="literal">G_IO_ERROR_CANCELLED</code> if it was blocking on receiving
data from the network. This is also the behaviour of <code class="function">g_input_stream_read()</code> when the download operation as a whole is cancelled.</p>
<p>In the case of <code class="function">g_input_stream_close()</code>, the call will return immediately if network activity hasn't yet started. If it has, the network activity will
be cancelled, regardless of whether the call to <code class="function">g_input_stream_close()</code> is cancelled. Cancelling a pending call to <code class="function">g_input_stream_close()</code> (either
using the method's <span class="type">GCancellable</span>, or by cancelling the download stream as a whole) will cause it to stop waiting for the network activity to finish,
and return <code class="literal">G_IO_ERROR_CANCELLED</code> immediately. Network activity will continue to be shut down in the background.</p>
<p>If the server returns an error message (for example, if the user is not correctly authenticated/authorized or doesn't have suitable permissions to
download from the given URI), it will be returned as a <a class="link" href="GDataService.html#GDataServiceError" title="enum GDataServiceError"><span class="type">GDataServiceError</span></a> by the first call to <code class="function">g_input_stream_read()</code>.</p>
<div class="example">
<a name="id-1.3.2.9.10.9"></a><p class="title"><b>Example 2. Downloading to a File</b></p>
<div class="example-contents">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
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37</pre></td>
        <td class="listing_code"><pre class="programlisting"><span class="usertype">GDataService</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">service</span><span class="symbol">;</span>
<span class="usertype">GDataAuthorizationDomain</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">domain</span><span class="symbol">;</span>
<span class="usertype">GCancellable</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">cancellable</span><span class="symbol">;</span>
<span class="usertype">GInputStream</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">download_stream</span><span class="symbol">;</span>
<span class="usertype">GOutputStream</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">output_stream</span><span class="symbol">;</span>

<span class="comment">/* Create the download stream */</span>
<span class="normal">service </span><span class="symbol">=</span><span class="normal"> </span><span class="function">create_my_service</span><span class="normal"> </span><span class="symbol">();</span>
<span class="normal">domain </span><span class="symbol">=</span><span class="normal"> </span><span class="function">get_my_authorization_domain_from_service</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">service</span><span class="symbol">);</span>
<span class="normal">cancellable </span><span class="symbol">=</span><span class="normal"> </span><span class="function">g_cancellable_new</span><span class="normal"> </span><span class="symbol">();</span><span class="normal"> </span><span class="comment">/* cancel this to cancel the entire download operation */</span>
<span class="normal">download_stream </span><span class="symbol">=</span><span class="normal"> </span><span class="function"><a href="GDataDownloadStream.html#gdata-download-stream-new">gdata_download_stream_new</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">service</span><span class="symbol">,</span><span class="normal"> domain</span><span class="symbol">,</span><span class="normal"> download_uri</span><span class="symbol">,</span><span class="normal"> cancellable</span><span class="symbol">);</span>
<span class="normal">output_stream </span><span class="symbol">=</span><span class="normal"> </span><span class="function">create_file_and_return_output_stream</span><span class="normal"> </span><span class="symbol">();</span>

<span class="comment">/* Perform the download asynchronously */</span>
<span class="function">g_output_stream_splice_async</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">output_stream</span><span class="symbol">,</span><span class="normal"> download_stream</span><span class="symbol">,</span><span class="normal"> G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE </span><span class="symbol">|</span><span class="normal"> G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET</span><span class="symbol">,</span>
<span class="normal">                              <a href="../glib/glib-The-Main-Event-Loop.html#G-PRIORITY-DEFAULT:CAPS">G_PRIORITY_DEFAULT</a></span><span class="symbol">,</span><span class="normal"> <a href="../glib/glib-Standard-Macros.html#NULL:CAPS">NULL</a></span><span class="symbol">,</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">GAsyncReadyCallback</span><span class="symbol">)</span><span class="normal"> download_splice_cb</span><span class="symbol">,</span><span class="normal"> <a href="../glib/glib-Standard-Macros.html#NULL:CAPS">NULL</a></span><span class="symbol">);</span>

<span class="function"><a href="../gobject/gobject-The-Base-Object-Type.html#g-object-unref">g_object_unref</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">output_stream</span><span class="symbol">);</span>
<span class="function"><a href="../gobject/gobject-The-Base-Object-Type.html#g-object-unref">g_object_unref</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">download_stream</span><span class="symbol">);</span>
<span class="function"><a href="../gobject/gobject-The-Base-Object-Type.html#g-object-unref">g_object_unref</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">cancellable</span><span class="symbol">);</span>
<span class="function"><a href="../gobject/gobject-The-Base-Object-Type.html#g-object-unref">g_object_unref</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">domain</span><span class="symbol">);</span>
<span class="function"><a href="../gobject/gobject-The-Base-Object-Type.html#g-object-unref">g_object_unref</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">service</span><span class="symbol">);</span>

<span class="keyword">static</span><span class="normal"> </span><span class="type">void</span>
<span class="function">download_splice_cb</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">GOutputStream</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">output_stream</span><span class="symbol">,</span><span class="normal"> </span><span class="usertype">GAsyncResult</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">result</span><span class="symbol">,</span><span class="normal"> </span><span class="usertype">gpointer</span><span class="normal"> user_data</span><span class="symbol">)</span>
<span class="cbracket">{</span>
<span class="normal">    </span><span class="usertype">GError</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">error </span><span class="symbol">=</span><span class="normal"> <a href="../glib/glib-Standard-Macros.html#NULL:CAPS">NULL</a></span><span class="symbol">;</span>

<span class="normal">    </span><span class="function">g_output_stream_splice_finish</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">output_stream</span><span class="symbol">,</span><span class="normal"> result</span><span class="symbol">,</span><span class="normal"> </span><span class="symbol">&amp;</span><span class="normal">error</span><span class="symbol">);</span>

<span class="normal">    </span><span class="keyword">if</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">error </span><span class="symbol">!=</span><span class="normal"> <a href="../glib/glib-Standard-Macros.html#NULL:CAPS">NULL</a> </span><span class="symbol">&amp;&amp;</span><span class="normal"> </span><span class="function"><a href="../glib/glib-Error-Reporting.html#g-error-matches">g_error_matches</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">error</span><span class="symbol">,</span><span class="normal"> G_IO_ERROR</span><span class="symbol">,</span><span class="normal"> G_IO_ERROR_CANCELLED</span><span class="symbol">)</span><span class="normal"> </span><span class="symbol">==</span><span class="normal"> <a href="../glib/glib-Standard-Macros.html#FALSE:CAPS">FALSE</a></span><span class="symbol">))</span><span class="normal"> </span><span class="cbracket">{</span>
<span class="normal">        </span><span class="comment">/* Error downloading the file; potentially an I/O error (GIOError), or an error response from the server</span>
<span class="comment">         * (GDataServiceError). You might want to delete the newly created file because of the error. */</span>
<span class="normal">        </span><span class="function"><a href="../glib/glib-Message-Logging.html#g-error">g_error</a></span><span class="normal"> </span><span class="symbol">(</span><span class="string">"Error downloading file: %s"</span><span class="symbol">,</span><span class="normal"> error</span><span class="symbol">-&gt;</span><span class="normal">message</span><span class="symbol">);</span>
<span class="normal">        </span><span class="function"><a href="../glib/glib-Error-Reporting.html#g-error-free">g_error_free</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">error</span><span class="symbol">);</span>
<span class="normal">    </span><span class="cbracket">}</span>
<span class="cbracket">}</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

</div>
<br class="example-break">
</div>
<div class="refsect1">
<a name="GDataDownloadStream.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gdata-download-stream-new"></a><h3>gdata_download_stream_new ()</h3>
<pre class="programlisting"><span class="returnvalue">GInputStream</span> *
gdata_download_stream_new (<em class="parameter"><code><a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a> *service</code></em>,
                           <em class="parameter"><code><a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="type">GDataAuthorizationDomain</span></a> *domain</code></em>,
                           <em class="parameter"><code>const <a href="../glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *download_uri</code></em>,
                           <em class="parameter"><code><span class="type">GCancellable</span> *cancellable</code></em>);</pre>
<p>Creates a new <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a>, allowing a file to be downloaded from a GData service using standard <span class="type">GInputStream</span> API.</p>
<p>As well as the standard GIO errors, calls to the <span class="type">GInputStream</span> API on a <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> can also return any relevant specific error from
<a class="link" href="GDataService.html#GDataServiceError" title="enum GDataServiceError"><span class="type">GDataServiceError</span></a>, or <a class="link" href="GDataService.html#GDATA-SERVICE-ERROR-PROTOCOL-ERROR:CAPS"><code class="literal">GDATA_SERVICE_ERROR_PROTOCOL_ERROR</code></a> in the general case.</p>
<p>If a <span class="type">GCancellable</span> is provided in <em class="parameter"><code>cancellable</code></em>
, the download operation may be cancelled at any time from another thread using <code class="function">g_cancellable_cancel()</code>.
In this case, any ongoing network activity will be stopped, and any pending or future calls to <span class="type">GInputStream</span> API on the <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> will
return <code class="literal">G_IO_ERROR_CANCELLED</code>. Note that the <span class="type">GCancellable</span> objects which can be passed to individual <span class="type">GInputStream</span> operations will not cancel the
download operation proper if cancelled — they will merely cancel that API call. The only way to cancel the download operation completely is using
this <em class="parameter"><code>cancellable</code></em>
.</p>
<div class="refsect3">
<a name="gdata-download-stream-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>service</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>domain</p></td>
<td class="parameter_description"><p>the <a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="type">GDataAuthorizationDomain</span></a> to authorize the download, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>download_uri</p></td>
<td class="parameter_description"><p>the URI to download; this must be HTTPS</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p>a <span class="type">GCancellable</span> for the entire download stream, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdata-download-stream-new.returns"></a><h4>Returns</h4>
<p> a new <span class="type">GInputStream</span>, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>; unref with <a href="../gobject/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a></p>
</div>
<p class="since">Since: <a class="link" href="ix11.html#api-index-0.9.0">0.9.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-download-stream-get-service"></a><h3>gdata_download_stream_get_service ()</h3>
<pre class="programlisting"><a class="link" href="GDataService.html" title="GDataService"><span class="returnvalue">GDataService</span></a> *
gdata_download_stream_get_service (<em class="parameter"><code><a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> *self</code></em>);</pre>
<p>Gets the service used to authorize the download, as passed to <a class="link" href="GDataDownloadStream.html#gdata-download-stream-new" title="gdata_download_stream_new ()"><code class="function">gdata_download_stream_new()</code></a>.</p>
<div class="refsect3">
<a name="gdata-download-stream-get-service.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdata-download-stream-get-service.returns"></a><h4>Returns</h4>
<p>the <a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a> used to authorize the download. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-download-stream-get-authorization-domain"></a><h3>gdata_download_stream_get_authorization_domain ()</h3>
<pre class="programlisting"><a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="returnvalue">GDataAuthorizationDomain</span></a> *
gdata_download_stream_get_authorization_domain
                               (<em class="parameter"><code><a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> *self</code></em>);</pre>
<p>Gets the authorization domain used to authorize the download, as passed to <a class="link" href="GDataDownloadStream.html#gdata-download-stream-new" title="gdata_download_stream_new ()"><code class="function">gdata_download_stream_new()</code></a>. It may be <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if authorization is not
needed for the download.</p>
<div class="refsect3">
<a name="gdata-download-stream-get-authorization-domain.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdata-download-stream-get-authorization-domain.returns"></a><h4>Returns</h4>
<p>the <a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="type">GDataAuthorizationDomain</span></a> used to authorize the download, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="ix11.html#api-index-0.9.0">0.9.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-download-stream-get-cancellable"></a><h3>gdata_download_stream_get_cancellable ()</h3>
<pre class="programlisting"><span class="returnvalue">GCancellable</span> *
gdata_download_stream_get_cancellable (<em class="parameter"><code><a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> *self</code></em>);</pre>
<p>Gets the <span class="type">GCancellable</span> for the entire download operation, <a class="link" href="GDataDownloadStream.html#GDataDownloadStream--cancellable" title="The “cancellable” property"><span class="type">“cancellable”</span></a>.</p>
<div class="refsect3">
<a name="gdata-download-stream-get-cancellable.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdata-download-stream-get-cancellable.returns"></a><h4>Returns</h4>
<p>the <span class="type">GCancellable</span> for the entire download operation. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="ix10.html#api-index-0.8.0">0.8.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-download-stream-get-download-uri"></a><h3>gdata_download_stream_get_download_uri ()</h3>
<pre class="programlisting">const <a href="../glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gdata_download_stream_get_download_uri
                               (<em class="parameter"><code><a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> *self</code></em>);</pre>
<p>Gets the URI of the file being downloaded, as passed to <a class="link" href="GDataDownloadStream.html#gdata-download-stream-new" title="gdata_download_stream_new ()"><code class="function">gdata_download_stream_new()</code></a>.</p>
<div class="refsect3">
<a name="gdata-download-stream-get-download-uri.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdata-download-stream-get-download-uri.returns"></a><h4>Returns</h4>
<p> the URI of the file being downloaded</p>
</div>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-download-stream-get-content-type"></a><h3>gdata_download_stream_get_content_type ()</h3>
<pre class="programlisting">const <a href="../glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gdata_download_stream_get_content_type
                               (<em class="parameter"><code><a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> *self</code></em>);</pre>
<p>Gets the content type of the file being downloaded. If the <code class="literal">Content-Type</code> header has not yet
been received, <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> will be returned.</p>
<div class="refsect3">
<a name="gdata-download-stream-get-content-type.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdata-download-stream-get-content-type.returns"></a><h4>Returns</h4>
<p> the content type of the file being downloaded, or <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p>
</div>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-download-stream-get-content-length"></a><h3>gdata_download_stream_get_content_length ()</h3>
<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gssize"><span class="returnvalue">gssize</span></a>
gdata_download_stream_get_content_length
                               (<em class="parameter"><code><a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> *self</code></em>);</pre>
<p>Gets the length (in bytes) of the file being downloaded. If the <code class="literal">Content-Length</code> header has not yet
been received from the server, <code class="code">-1</code> will be returned.</p>
<div class="refsect3">
<a name="gdata-download-stream-get-content-length.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gdata-download-stream-get-content-length.returns"></a><h4>Returns</h4>
<p> the content length of the file being downloaded, or <code class="code">-1</code></p>
</div>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
</div>
<div class="refsect1">
<a name="GDataDownloadStream.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GDataDownloadStream-struct"></a><h3>GDataDownloadStream</h3>
<pre class="programlisting">typedef struct _GDataDownloadStream GDataDownloadStream;</pre>
<p>All the fields in the <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> structure are private and should never be accessed directly.</p>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GDataDownloadStreamClass"></a><h3>GDataDownloadStreamClass</h3>
<pre class="programlisting">typedef struct {
} GDataDownloadStreamClass;
</pre>
<p>All the fields in the <a class="link" href="GDataDownloadStream.html#GDataDownloadStreamClass" title="GDataDownloadStreamClass"><span class="type">GDataDownloadStreamClass</span></a> structure are private and should never be accessed directly.</p>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
</div>
<div class="refsect1">
<a name="GDataDownloadStream.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GDataDownloadStream--authorization-domain"></a><h3>The <code class="literal">“authorization-domain”</code> property</h3>
<pre class="programlisting">  “authorization-domain”     <a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="type">GDataAuthorizationDomain</span></a> *</pre>
<p>The authorization domain for the download, against which the <a class="link" href="GDataService.html#GDataService--authorizer" title="The “authorizer” property"><span class="type">“authorizer”</span></a> for the <a class="link" href="GDataDownloadStream.html#GDataDownloadStream--service" title="The “service” property"><span class="type">“service”</span></a> should be
authorized. This may be <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if authorization is not needed for the download.</p>
<p>Flags: Read / Write / Construct Only</p>
<p class="since">Since: <a class="link" href="ix11.html#api-index-0.9.0">0.9.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GDataDownloadStream--cancellable"></a><h3>The <code class="literal">“cancellable”</code> property</h3>
<pre class="programlisting">  “cancellable”              <span class="type">GCancellable</span> *</pre>
<p>An optional cancellable used to cancel the entire download operation. If a <span class="type">GCancellable</span> instance isn't provided for this property at
construction time (i.e. to <a class="link" href="GDataDownloadStream.html#gdata-download-stream-new" title="gdata_download_stream_new ()"><code class="function">gdata_download_stream_new()</code></a>), one will be created internally and can be retrieved using
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-get-cancellable" title="gdata_download_stream_get_cancellable ()"><code class="function">gdata_download_stream_get_cancellable()</code></a> and used to cancel the download operation with <code class="function">g_cancellable_cancel()</code> just as if it was passed to
<a class="link" href="GDataDownloadStream.html#gdata-download-stream-new" title="gdata_download_stream_new ()"><code class="function">gdata_download_stream_new()</code></a>.</p>
<p>If the download operation is cancelled using this <span class="type">GCancellable</span>, any ongoing network activity will be stopped, and any pending or future
calls to <span class="type">GInputStream</span> API on the <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> will return <code class="literal">G_IO_ERROR_CANCELLED</code>. Note that the <span class="type">GCancellable</span> objects which can be
passed to individual <span class="type">GInputStream</span> operations will not cancel the download operation proper if cancelled — they will merely cancel that API
call. The only way to cancel the download operation completely is using <a class="link" href="GDataDownloadStream.html#GDataDownloadStream--cancellable" title="The “cancellable” property"><span class="type">“cancellable”</span></a>.</p>
<p>Flags: Read / Write / Construct Only</p>
<p class="since">Since: <a class="link" href="ix10.html#api-index-0.8.0">0.8.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GDataDownloadStream--content-length"></a><h3>The <code class="literal">“content-length”</code> property</h3>
<pre class="programlisting">  “content-length”           <a href="../glib/glib-Basic-Types.html#glong"><span class="type">glong</span></a></pre>
<p>The length (in bytes) of the file being downloaded. This will initially be <code class="code">-1</code>, and will be populated as soon as
the appropriate header is received from the server. Its value will never change after this.</p>
<p>Note that change notifications for this property (<a href="../gobject/gobject-The-Base-Object-Type.html#GObject-notify"><span class="type">“notify”</span></a> emissions) may be emitted in threads other than the one which created
the <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a>. It is the client's responsibility to ensure that any notification signal handlers are either multi-thread safe
or marshal the notification to the thread which owns the <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> as appropriate.</p>
<p>Flags: Read</p>
<p>Allowed values: &gt;= -1</p>
<p>Default value: -1</p>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GDataDownloadStream--content-type"></a><h3>The <code class="literal">“content-type”</code> property</h3>
<pre class="programlisting">  “content-type”             <a href="../glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre>
<p>The content type of the file being downloaded. This will initially be <a href="../glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, and will be populated as soon as the appropriate header is
received from the server. Its value will never change after this.</p>
<p>Note that change notifications for this property (<a href="../gobject/gobject-The-Base-Object-Type.html#GObject-notify"><span class="type">“notify”</span></a> emissions) may be emitted in threads other than the one which created
the <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a>. It is the client's responsibility to ensure that any notification signal handlers are either multi-thread safe
or marshal the notification to the thread which owns the <a class="link" href="GDataDownloadStream.html" title="GDataDownloadStream"><span class="type">GDataDownloadStream</span></a> as appropriate.</p>
<p>Flags: Read</p>
<p>Default value: NULL</p>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GDataDownloadStream--download-uri"></a><h3>The <code class="literal">“download-uri”</code> property</h3>
<pre class="programlisting">  “download-uri”             <a href="../glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre>
<p>The URI of the file to download. This must be HTTPS.</p>
<p>Flags: Read / Write / Construct Only</p>
<p>Default value: NULL</p>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="GDataDownloadStream--service"></a><h3>The <code class="literal">“service”</code> property</h3>
<pre class="programlisting">  “service”                  <a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a> *</pre>
<p>The service which is used to authorize the download, and to which the download relates.</p>
<p>Flags: Read / Write / Construct Only</p>
<p class="since">Since: <a class="link" href="ix07.html#api-index-0.5.0">0.5.0</a></p>
</div>
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