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<div id="projectname">Apache log4cxx <span id="projectnumber">Version 0.10.0</span></div>
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<a href="#pub-methods">Public Member Functions</a> |
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<h1>XMLSocketAppender Class Reference</h1> </div>
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<!-- doxytag: class="log4cxx::net::XMLSocketAppender" --><!-- doxytag: inherits="log4cxx::net::SocketAppenderSkeleton" -->
<p>Sends <a class="el" href="classlog4cxx_1_1spi_1_1_logging_event.html">LoggingEvent</a> objects in XML format to a remote a log server, usually a XMLSocketNode.
<a href="#_details">More...</a></p>
<p>Inherits <a class="el" href="classlog4cxx_1_1net_1_1_socket_appender_skeleton.html">log4cxx::net::SocketAppenderSkeleton</a>.</p>
<p><a href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#ae30031f855dfd958d9d47f26a92fbbb6">XMLSocketAppender</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#a7de84cb5c56e3c86f6ddf72889aac928">~XMLSocketAppender</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#aecfd6bf3c242dc69b21c2f9d9eeed001">XMLSocketAppender</a> (helpers::InetAddressPtr address, int port)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Connects to remote server at <code>address</code> and <code>port</code>. <a href="#aecfd6bf3c242dc69b21c2f9d9eeed001"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#abaa6e44f7bc2ae07dbe8b32723c93eb0">XMLSocketAppender</a> (const <a class="el" href="namespacelog4cxx.html#ad7ec98d27bca7666e23f27dd1fb181c8">LogString</a> &host, int port)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Connects to remote server at <code>host</code> and <code>port</code>. <a href="#abaa6e44f7bc2ae07dbe8b32723c93eb0"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pub-static-attribs"></a>
Static Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#a99b0a86e5516b7e6714faaf444cfd2be">DEFAULT_PORT</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The default port number of remote logging server (4560). <a href="#a99b0a86e5516b7e6714faaf444cfd2be"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#ad40c219e214e2824f320cf7f532ce735">DEFAULT_RECONNECTION_DELAY</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The default reconnection delay (30000 milliseconds or 30 seconds). <a href="#ad40c219e214e2824f320cf7f532ce735"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static const int </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#a945fa6c3fd6665a930c4a3c21d40d281">MAX_EVENT_LEN</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">An event XML stream cannot exceed 1024 bytes. <a href="#a945fa6c3fd6665a930c4a3c21d40d281"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#a547de53d1d112be4473619d1d1f1989b">setSocket</a> (log4cxx::helpers::SocketPtr &socket, <a class="el" href="classlog4cxx_1_1helpers_1_1_pool.html">log4cxx::helpers::Pool</a> &p)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#a341776e04cf186fa34ce9dc56421ce1c">cleanUp</a> (<a class="el" href="classlog4cxx_1_1helpers_1_1_pool.html">log4cxx::helpers::Pool</a> &p)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#a7b76ff47dd182569171ec8bb6167a63d">getDefaultDelay</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#af2f7856d78b85af569c2e23522311203">getDefaultPort</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#ab862691b0ebb1d0ff98085b10b021781">append</a> (const <a class="el" href="classlog4cxx_1_1helpers_1_1_object_ptr_t.html">spi::LoggingEventPtr</a> &event, <a class="el" href="classlog4cxx_1_1helpers_1_1_pool.html">log4cxx::helpers::Pool</a> &<a class="el" href="classlog4cxx_1_1_appender_skeleton.html#a6c72571775abf91a74fade4e2c2b9af8">pool</a>)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Subclasses of <code><a class="el" href="classlog4cxx_1_1_appender_skeleton.html" title="Implementation base class for all appenders.">AppenderSkeleton</a></code> should implement this method to perform actual logging. <a href="#ab862691b0ebb1d0ff98085b10b021781"></a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Sends <a class="el" href="classlog4cxx_1_1spi_1_1_logging_event.html">LoggingEvent</a> objects in XML format to a remote a log server, usually a XMLSocketNode. </p>
<p>The <a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html" title="Sends LoggingEvent objects in XML format to a remote a log server, usually a XMLSocketNode.">XMLSocketAppender</a> has the following properties:</p>
<ul>
<li>If sent to a XMLSocketNode, remote logging is non-intrusive as far as the log event is concerned. In other words, the event will be logged with the same time stamp, <a class="el" href="classlog4cxx_1_1_n_d_c.html">NDC</a>, location info as if it were logged locally by the client.</li>
</ul>
<ul>
<li>XMLSocketAppenders use exclusively an XMLLayout. They ship an XML stream representing a <a class="el" href="classlog4cxx_1_1spi_1_1_logging_event.html">LoggingEvent</a> object to the server side.</li>
</ul>
<ul>
<li>Remote logging uses the TCP protocol. Consequently, if the server is reachable, then log events will eventually arrive at the server.</li>
</ul>
<ul>
<li>If the remote server is down, the logging requests are simply dropped. However, if and when the server comes back up, then event transmission is resumed transparently. This transparent reconneciton is performed by a <em>connector</em> thread which periodically attempts to connect to the server.</li>
</ul>
<ul>
<li>Logging events are automatically <em>buffered</em> by the native TCP implementation. This means that if the link to server is slow but still faster than the rate of (log) event production by the client, the client will not be affected by the slow network connection. However, if the network connection is slower then the rate of event production, then the client can only progress at the network rate. In particular, if the network link to the the server is down, the client will be blocked. <br/>
<br/>
On the other hand, if the network link is up, but the server is down, the client will not be blocked when making log requests but the log events will be lost due to server unavailability.</li>
</ul>
<ul>
<li>Even if an <code><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html" title="Sends LoggingEvent objects in XML format to a remote a log server, usually a XMLSocketNode.">XMLSocketAppender</a></code> is no longer attached to any logger, it will not be destroyed in the presence of a connector thread. A connector thread exists only if the connection to the server is down. To avoid this destruction problem, you should <a class="el" href="classlog4cxx_1_1net_1_1_socket_appender_skeleton.html#a5ae591df94fc66ccb85cbb6565368bca" title="Release any resources allocated within the appender such as file handles, network connections...">close</a> the the <code><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html" title="Sends LoggingEvent objects in XML format to a remote a log server, usually a XMLSocketNode.">XMLSocketAppender</a></code> explicitly. See also next item. <br/>
<br/>
Long lived applications which create/destroy many <code><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html" title="Sends LoggingEvent objects in XML format to a remote a log server, usually a XMLSocketNode.">XMLSocketAppender</a></code> instances should be aware of this destruction problem. Most other applications can safely ignore it.</li>
</ul>
<ul>
<li>If the application hosting the <code><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html" title="Sends LoggingEvent objects in XML format to a remote a log server, usually a XMLSocketNode.">XMLSocketAppender</a></code> exits before the <code><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html" title="Sends LoggingEvent objects in XML format to a remote a log server, usually a XMLSocketNode.">XMLSocketAppender</a></code> is closed either explicitly or subsequent to destruction, then there might be untransmitted data in the pipe which might be lost. <br/>
<br/>
To avoid lost data, it is usually sufficient to <a class="el" href="classlog4cxx_1_1net_1_1_socket_appender_skeleton.html#a5ae591df94fc66ccb85cbb6565368bca" title="Release any resources allocated within the appender such as file handles, network connections...">close</a> the <code><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html" title="Sends LoggingEvent objects in XML format to a remote a log server, usually a XMLSocketNode.">XMLSocketAppender</a></code> either explicitly or by calling the <a class="el" href="classlog4cxx_1_1_log_manager.html#a62d41be4b41bfdb31fb9d8b017c5363a" title="Safely close and remove all appenders in all loggers including the root logger.">LogManager::shutdown</a> method before exiting the application. </li>
</ul>
</div><hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="ae30031f855dfd958d9d47f26a92fbbb6"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::XMLSocketAppender" ref="ae30031f855dfd958d9d47f26a92fbbb6" args="()" -->
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<td class="memname"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html">XMLSocketAppender</a> </td>
<td>(</td>
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<a class="anchor" id="a7de84cb5c56e3c86f6ddf72889aac928"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::~XMLSocketAppender" ref="a7de84cb5c56e3c86f6ddf72889aac928" args="()" -->
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<td class="memname">~<a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html">XMLSocketAppender</a> </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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<a class="anchor" id="aecfd6bf3c242dc69b21c2f9d9eeed001"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::XMLSocketAppender" ref="aecfd6bf3c242dc69b21c2f9d9eeed001" args="(helpers::InetAddressPtr address, int port)" -->
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<td class="memname"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html">XMLSocketAppender</a> </td>
<td>(</td>
<td class="paramtype">helpers::InetAddressPtr </td>
<td class="paramname"><em>address</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>port</em> </td>
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<td>)</td>
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<p>Connects to remote server at <code>address</code> and <code>port</code>. </p>
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<a class="anchor" id="abaa6e44f7bc2ae07dbe8b32723c93eb0"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::XMLSocketAppender" ref="abaa6e44f7bc2ae07dbe8b32723c93eb0" args="(const LogString &host, int port)" -->
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<td class="memname"><a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html">XMLSocketAppender</a> </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="namespacelog4cxx.html#ad7ec98d27bca7666e23f27dd1fb181c8">LogString</a> & </td>
<td class="paramname"><em>host</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>port</em> </td>
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<p>Connects to remote server at <code>host</code> and <code>port</code>. </p>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ab862691b0ebb1d0ff98085b10b021781"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::append" ref="ab862691b0ebb1d0ff98085b10b021781" args="(const spi::LoggingEventPtr &event, log4cxx::helpers::Pool &pool)" -->
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<td class="memname">void append </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classlog4cxx_1_1helpers_1_1_object_ptr_t.html">spi::LoggingEventPtr</a> & </td>
<td class="paramname"><em>event</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"><a class="el" href="classlog4cxx_1_1helpers_1_1_pool.html">log4cxx::helpers::Pool</a> & </td>
<td class="paramname"><em>p</em> </td>
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<td>)</td>
<td></td><td><code> [protected, virtual]</code></td>
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<p>Subclasses of <code><a class="el" href="classlog4cxx_1_1_appender_skeleton.html" title="Implementation base class for all appenders.">AppenderSkeleton</a></code> should implement this method to perform actual logging. </p>
<p>See also <a class="el" href="classlog4cxx_1_1_appender_skeleton.html#a2df87e9db87ebe5396ea94fb9c25c488" title="This method performs threshold checks and invokes filters before delegating actual logging to the sub...">AppenderSkeleton::doAppend</a> method. </p>
<p>Implements <a class="el" href="classlog4cxx_1_1_appender_skeleton.html#a4c08a91d859f636117f07463bb53fe41">AppenderSkeleton</a>.</p>
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<a class="anchor" id="a341776e04cf186fa34ce9dc56421ce1c"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::cleanUp" ref="a341776e04cf186fa34ce9dc56421ce1c" args="(log4cxx::helpers::Pool &p)" -->
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<td class="memname">virtual void cleanUp </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classlog4cxx_1_1helpers_1_1_pool.html">log4cxx::helpers::Pool</a> & </td>
<td class="paramname"><em>p</em></td><td>)</td>
<td><code> [protected, virtual]</code></td>
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<p>Implements <a class="el" href="classlog4cxx_1_1net_1_1_socket_appender_skeleton.html#a79a92843f641b5c13c0734a077bfb605">SocketAppenderSkeleton</a>.</p>
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<a class="anchor" id="a7b76ff47dd182569171ec8bb6167a63d"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::getDefaultDelay" ref="a7b76ff47dd182569171ec8bb6167a63d" args="() const " -->
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<td class="memname">virtual int getDefaultDelay </td>
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<td> const<code> [protected, virtual]</code></td>
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<p>Implements <a class="el" href="classlog4cxx_1_1net_1_1_socket_appender_skeleton.html#aa3d1a578110fb371105e947a516bf0f2">SocketAppenderSkeleton</a>.</p>
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<a class="anchor" id="af2f7856d78b85af569c2e23522311203"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::getDefaultPort" ref="af2f7856d78b85af569c2e23522311203" args="() const " -->
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<td class="memname">virtual int getDefaultPort </td>
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<td> const<code> [protected, virtual]</code></td>
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<p>Implements <a class="el" href="classlog4cxx_1_1net_1_1_socket_appender_skeleton.html#aa9bebbee10abd4307deb98cea3baa08c">SocketAppenderSkeleton</a>.</p>
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<a class="anchor" id="a547de53d1d112be4473619d1d1f1989b"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::setSocket" ref="a547de53d1d112be4473619d1d1f1989b" args="(log4cxx::helpers::SocketPtr &socket, log4cxx::helpers::Pool &p)" -->
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<td class="memname">virtual void setSocket </td>
<td>(</td>
<td class="paramtype">log4cxx::helpers::SocketPtr & </td>
<td class="paramname"><em>socket</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"><a class="el" href="classlog4cxx_1_1helpers_1_1_pool.html">log4cxx::helpers::Pool</a> & </td>
<td class="paramname"><em>p</em> </td>
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<p>Implements <a class="el" href="classlog4cxx_1_1net_1_1_socket_appender_skeleton.html#a9077a15836f082b3e26fc25de4bea5ee">SocketAppenderSkeleton</a>.</p>
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<hr/><h2>Member Data Documentation</h2>
<a class="anchor" id="a99b0a86e5516b7e6714faaf444cfd2be"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::DEFAULT_PORT" ref="a99b0a86e5516b7e6714faaf444cfd2be" args="" -->
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<td class="memname">int <a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#a99b0a86e5516b7e6714faaf444cfd2be">DEFAULT_PORT</a><code> [static]</code></td>
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<p>The default port number of remote logging server (4560). </p>
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<a class="anchor" id="ad40c219e214e2824f320cf7f532ce735"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::DEFAULT_RECONNECTION_DELAY" ref="ad40c219e214e2824f320cf7f532ce735" args="" -->
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<td class="memname">int <a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#ad40c219e214e2824f320cf7f532ce735">DEFAULT_RECONNECTION_DELAY</a><code> [static]</code></td>
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<p>The default reconnection delay (30000 milliseconds or 30 seconds). </p>
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<a class="anchor" id="a945fa6c3fd6665a930c4a3c21d40d281"></a><!-- doxytag: member="log4cxx::net::XMLSocketAppender::MAX_EVENT_LEN" ref="a945fa6c3fd6665a930c4a3c21d40d281" args="" -->
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<td class="memname">const int <a class="el" href="classlog4cxx_1_1net_1_1_x_m_l_socket_appender.html#a945fa6c3fd6665a930c4a3c21d40d281">MAX_EVENT_LEN</a><code> [static]</code></td>
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<p>An event XML stream cannot exceed 1024 bytes. </p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="xmlsocketappender_8h.html">xmlsocketappender.h</a></li>
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