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<a href="#id368696" class="shortcut">Description</a></nobr></td></tr>
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<div class="refentry" lang="en">
<a name="gnet-conn"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2>
<a name="id367701"></a><span class="refentrytitle">Conn</span>
</h2>
<p>Conn — TCP connection object</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">
#include <gnet.h>
<a href="gnet-conn.html#GConn">GConn</a>;
<a href="gnet-conn.html#GConnEvent">GConnEvent</a>;
enum <a href="gnet-conn.html#GConnEventType">GConnEventType</a>;
void (<a href="gnet-conn.html#GConnFunc">*GConnFunc</a>) (<a href="gnet-conn.html#GConn">GConn</a> *conn,
<a href="gnet-conn.html#GConnEvent">GConnEvent</a> *event,
gpointer user_data);
<a href="gnet-conn.html#GConn">GConn</a>* <a href="gnet-conn.html#gnet-conn-new">gnet_conn_new</a> (const gchar *hostname,
gint port,
<a href="gnet-conn.html#GConnFunc">GConnFunc</a> func,
gpointer user_data);
<a href="gnet-conn.html#GConn">GConn</a>* <a href="gnet-conn.html#gnet-conn-new-inetaddr">gnet_conn_new_inetaddr</a> (const <a href="gnet-inetaddr.html#GInetAddr">GInetAddr</a> *inetaddr,
<a href="gnet-conn.html#GConnFunc">GConnFunc</a> func,
gpointer user_data);
<a href="gnet-conn.html#GConn">GConn</a>* <a href="gnet-conn.html#gnet-conn-new-socket">gnet_conn_new_socket</a> (<a href="gnet-tcp.html#GTcpSocket">GTcpSocket</a> *socket,
<a href="gnet-conn.html#GConnFunc">GConnFunc</a> func,
gpointer user_data);
void <a href="gnet-conn.html#gnet-conn-delete">gnet_conn_delete</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn);
void <a href="gnet-conn.html#gnet-conn-ref">gnet_conn_ref</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn);
void <a href="gnet-conn.html#gnet-conn-unref">gnet_conn_unref</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn);
void <a href="gnet-conn.html#gnet-conn-set-callback">gnet_conn_set_callback</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn,
<a href="gnet-conn.html#GConnFunc">GConnFunc</a> func,
gpointer user_data);
gboolean <a href="gnet-conn.html#gnet-conn-set-main-context">gnet_conn_set_main_context</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn,
GMainContext *context);
void <a href="gnet-conn.html#gnet-conn-connect">gnet_conn_connect</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn);
void <a href="gnet-conn.html#gnet-conn-disconnect">gnet_conn_disconnect</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn);
gboolean <a href="gnet-conn.html#gnet-conn-is-connected">gnet_conn_is_connected</a> (const <a href="gnet-conn.html#GConn">GConn</a> *conn);
void <a href="gnet-conn.html#gnet-conn-read">gnet_conn_read</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn);
void <a href="gnet-conn.html#gnet-conn-readn">gnet_conn_readn</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gint length);
void <a href="gnet-conn.html#gnet-conn-readline">gnet_conn_readline</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn);
void <a href="gnet-conn.html#gnet-conn-write">gnet_conn_write</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gchar *buffer,
gint length);
void <a href="gnet-conn.html#gnet-conn-write-direct">gnet_conn_write_direct</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gchar *buffer,
gint length,
GDestroyNotify buffer_destroy_cb);
void <a href="gnet-conn.html#gnet-conn-set-watch-error">gnet_conn_set_watch_error</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gboolean enable);
void <a href="gnet-conn.html#gnet-conn-set-watch-readable">gnet_conn_set_watch_readable</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gboolean enable);
void <a href="gnet-conn.html#gnet-conn-set-watch-writable">gnet_conn_set_watch_writable</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gboolean enable);
void <a href="gnet-conn.html#gnet-conn-timeout">gnet_conn_timeout</a> (<a href="gnet-conn.html#GConn">GConn</a> *conn,
guint timeout);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id368696"></a><h2>Description</h2>
<p>
A <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> represents a TCP connection. A <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> is usually created directly by
the user by calling <a href="gnet-conn.html#gnet-conn-new"><code class="function">gnet_conn_new()</code></a> or <a href="gnet-conn.html#gnet-conn-new-inetaddr"><code class="function">gnet_conn_new_inetaddr()</code></a>. To connect to
the remote host, call <a href="gnet-conn.html#gnet-conn-connect"><code class="function">gnet_conn_connect()</code></a> and to disconnect call
<a href="gnet-conn.html#gnet-conn-disconnect"><code class="function">gnet_conn_disconnect()</code></a>. You may use the same <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> to connect again to the
host after you disconnected. Free the <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> with <a href="gnet-conn.html#gnet-conn-unref"><code class="function">gnet_conn_unref()</code></a> or
<a href="gnet-conn.html#gnet-conn-delete"><code class="function">gnet_conn_delete()</code></a> when no longer needed.
</p>
<p>
<a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>s are also created by a <a href="gnet-server.html#GServer"><span class="type">GServer</span></a> when a client connects. You
will need to call <a href="gnet-conn.html#gnet-conn-set-callback"><code class="function">gnet_conn_set_callback()</code></a> to set the <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> callback after
it is created by the <a href="gnet-server.html#GServer"><span class="type">GServer</span></a>. A <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> that has been created by a <a href="gnet-server.html#GServer"><span class="type">GServer</span></a>
is already connect, you don't have to call <a href="gnet-conn.html#gnet-conn-connect"><code class="function">gnet_conn_connect()</code></a> in this case.
Call <a href="gnet-conn.html#gnet-conn-unref"><code class="function">gnet_conn_unref()</code></a> or <a href="gnet-conn.html#gnet-conn-delete"><code class="function">gnet_conn_delete()</code></a> to disconnect the remote client
and free the <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>.
</p>
<p>
The iochannel field and <span class="type">GIOChannel</span> functions can be used to read from
or write to the socket. <span class="type">GIOChannel</span> functions block. To make an
asynchronous read call <a href="gnet-conn.html#gnet-conn-read"><code class="function">gnet_conn_read()</code></a> and to make an asynchronous
write call <a href="gnet-conn.html#gnet-conn-write"><code class="function">gnet_conn_write()</code></a>. The callback is called whenever a read
or write completes.
</p>
<p>
Special use cases (you usually do not need this): use
<a href="gnet-conn.html#gnet-conn-set-watch-error"><code class="function">gnet_conn_set_watch_error()</code></a> to get an event if an error occurs.
Use <a href="gnet-conn.html#gnet-conn-set-watch-readable"><code class="function">gnet_conn_set_watch_readable()</code></a> and <a href="gnet-conn.html#gnet-conn-set-watch-writable"><code class="function">gnet_conn_set_watch_writable()</code></a>
to get events when the connection is readable or writable. These can
be used to implement custom I/O handling for cases where <a href="gnet-conn.html#gnet-conn-read"><code class="function">gnet_conn_read()</code></a>,
<a href="gnet-conn.html#gnet-conn-write"><code class="function">gnet_conn_write()</code></a> and <a href="gnet-conn.html#gnet-conn-write-direct"><code class="function">gnet_conn_write_direct()</code></a> are not suitable. For example,
consider writing from a <code class="function">mmap()</code>'ed file. <a href="gnet-conn.html#gnet-conn-write"><code class="function">gnet_conn_write()</code></a> will allocate memory
for a buffer and copy part of the file into the buffer. To avoid the
copy, use <a href="gnet-conn.html#gnet-conn-set-watch-writable"><code class="function">gnet_conn_set_watch_writable()</code></a> to catch the writable event
and then write directly from memory to the socket (note: this is obsolete, you
can now use <a href="gnet-conn.html#gnet-conn-write-direct"><code class="function">gnet_conn_write_direct()</code></a> for this).
</p>
<p>
<a href="gnet-conn.html#gnet-conn-timeout"><code class="function">gnet_conn_timeout()</code></a> sets a timeout on the GConn. The
<a href="gnet-conn.html#GNET-CONN-TIMEOUT:CAPS"><code class="literal">GNET_CONN_TIMEOUT</code></a> event occurs when the timer expires. For example,
the timer may be set before connecting to the host. If the connection
is made, the <a href="gnet-conn.html#GNET-CONN-CONNECT:CAPS"><code class="literal">GNET_CONN_CONNECT</code></a> event occurs. The timer can then be
reset by setting the timeout to 0. Otherwise, the <a href="gnet-conn.html#GNET-CONN-TIMEOUT:CAPS"><code class="literal">GNET_CONN_TIMEOUT</code></a>
event will eventually occur.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id369112"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id369122"></a><h3>
<a name="GConn"></a>GConn</h3>
<a class="indexterm" name="id369134"></a><pre class="programlisting">typedef struct {
/* Public */
gchar* hostname;
gint port;
GIOChannel* iochannel;
GTcpSocket* socket;
GInetAddr* inetaddr;
/* Private */
guint ref_count;
guint ref_count_internal;
/* Connect */
GTcpSocketConnectAsyncID connect_id;
GTcpSocketNewAsyncID new_id;
/* Write */
GList* write_queue;
guint bytes_written;
/* Read */
gchar* buffer;
guint length;
guint bytes_read;
gboolean read_eof;
GList* read_queue;
guint process_buffer_timeout;
/* Readable/writable */
gboolean watch_readable;
gboolean watch_writable;
/* IO watch */
guint watch_flags;
guint watch;
/* Timer */
guint timer;
/* User data */
GConnFunc func;
gpointer user_data;
GMainContext * context;
gint priority;
} GConn;
</pre>
<p>
TCP Connection. Some of the fields are public, but do not set
these fields.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term">gchar *<em class="structfield"><code>hostname</code></em>;</span></td>
<td> host name
</td>
</tr>
<tr>
<td><span class="term">gint <em class="structfield"><code>port</code></em>;</span></td>
<td> port
</td>
</tr>
<tr>
<td><span class="term">GIOChannel *<em class="structfield"><code>iochannel</code></em>;</span></td>
<td> IO channel
</td>
</tr>
<tr>
<td><span class="term"><a href="gnet-tcp.html#GTcpSocket">GTcpSocket</a> *<em class="structfield"><code>socket</code></em>;</span></td>
<td> socket
</td>
</tr>
<tr>
<td><span class="term"><a href="gnet-inetaddr.html#GInetAddr">GInetAddr</a> *<em class="structfield"><code>inetaddr</code></em>;</span></td>
<td> address
</td>
</tr>
<tr>
<td><span class="term">guint <em class="structfield"><code>ref_count</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">guint <em class="structfield"><code>ref_count_internal</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term"><a href="gnet-tcp.html#GTcpSocketConnectAsyncID">GTcpSocketConnectAsyncID</a> <em class="structfield"><code>connect_id</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term"><a href="gnet-tcp.html#GTcpSocketNewAsyncID">GTcpSocketNewAsyncID</a> <em class="structfield"><code>new_id</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">GList *<em class="structfield"><code>write_queue</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">guint <em class="structfield"><code>bytes_written</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">gchar *<em class="structfield"><code>buffer</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">guint <em class="structfield"><code>length</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">guint <em class="structfield"><code>bytes_read</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">gboolean <em class="structfield"><code>read_eof</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">GList *<em class="structfield"><code>read_queue</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">guint <em class="structfield"><code>process_buffer_timeout</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">gboolean <em class="structfield"><code>watch_readable</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">gboolean <em class="structfield"><code>watch_writable</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">guint <em class="structfield"><code>watch_flags</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">guint <em class="structfield"><code>watch</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">guint <em class="structfield"><code>timer</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term"><a href="gnet-conn.html#GConnFunc">GConnFunc</a> <em class="structfield"><code>func</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">gpointer <em class="structfield"><code>user_data</code></em>;</span></td>
<td> [private]
</td>
</tr>
<tr>
<td><span class="term">GMainContext *<em class="structfield"><code>context</code></em>;</span></td>
<td>
</td>
</tr>
<tr>
<td><span class="term">gint <em class="structfield"><code>priority</code></em>;</span></td>
<td>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id369698"></a><h3>
<a name="GConnEvent"></a>GConnEvent</h3>
<a class="indexterm" name="id369710"></a><pre class="programlisting">typedef struct {
GConnEventType type;
gchar* buffer;
gint length;
} GConnEvent;
</pre>
<p>
GConn Event. <em class="parameter"><code>buffer</code></em> and <em class="parameter"><code>length</code></em> are set only on <a href="gnet-conn.html#GNET-CONN-READ:CAPS"><span class="type">GNET_CONN_READ</span></a>
events. The buffer is caller-owned.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><a href="gnet-conn.html#GConnEventType">GConnEventType</a> <em class="structfield"><code>type</code></em>;</span></td>
<td> event type
</td>
</tr>
<tr>
<td><span class="term">gchar *<em class="structfield"><code>buffer</code></em>;</span></td>
<td> buffer
</td>
</tr>
<tr>
<td><span class="term">gint <em class="structfield"><code>length</code></em>;</span></td>
<td> buffer length
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id369816"></a><h3>
<a name="GConnEventType"></a>enum GConnEventType</h3>
<a class="indexterm" name="id369828"></a><pre class="programlisting">typedef enum {
GNET_CONN_ERROR,
GNET_CONN_CONNECT,
GNET_CONN_CLOSE,
GNET_CONN_TIMEOUT,
GNET_CONN_READ,
GNET_CONN_WRITE,
GNET_CONN_READABLE,
GNET_CONN_WRITABLE
} GConnEventType;
</pre>
<p>
Event type. Used by <a href="gnet-conn.html#GConnEvent"><span class="type">GConnEvent</span></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><a name="GNET-CONN-ERROR:CAPS"></a><code class="literal">GNET_CONN_ERROR</code></span></td>
<td> Connection error
</td>
</tr>
<tr>
<td><span class="term"><a name="GNET-CONN-CONNECT:CAPS"></a><code class="literal">GNET_CONN_CONNECT</code></span></td>
<td> Connection complete
</td>
</tr>
<tr>
<td><span class="term"><a name="GNET-CONN-CLOSE:CAPS"></a><code class="literal">GNET_CONN_CLOSE</code></span></td>
<td> Connection closed
</td>
</tr>
<tr>
<td><span class="term"><a name="GNET-CONN-TIMEOUT:CAPS"></a><code class="literal">GNET_CONN_TIMEOUT</code></span></td>
<td> Timeout
</td>
</tr>
<tr>
<td><span class="term"><a name="GNET-CONN-READ:CAPS"></a><code class="literal">GNET_CONN_READ</code></span></td>
<td> Read complete
</td>
</tr>
<tr>
<td><span class="term"><a name="GNET-CONN-WRITE:CAPS"></a><code class="literal">GNET_CONN_WRITE</code></span></td>
<td> Write complete
</td>
</tr>
<tr>
<td><span class="term"><a name="GNET-CONN-READABLE:CAPS"></a><code class="literal">GNET_CONN_READABLE</code></span></td>
<td> Connection is readable
</td>
</tr>
<tr>
<td><span class="term"><a name="GNET-CONN-WRITABLE:CAPS"></a><code class="literal">GNET_CONN_WRITABLE</code></span></td>
<td> Connection is writable
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id370030"></a><h3>
<a name="GConnFunc"></a>GConnFunc ()</h3>
<a class="indexterm" name="id370042"></a><pre class="programlisting">void (*GConnFunc) (<a href="gnet-conn.html#GConn">GConn</a> *conn,
<a href="gnet-conn.html#GConnEvent">GConnEvent</a> *event,
gpointer user_data);</pre>
<p>
Callback for <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>.
</p>
<p>
Possible events:
</p>
<p>
<a href="gnet-conn.html#GNET-CONN-ERROR:CAPS"><code class="literal">GNET_CONN_ERROR</code></a>: <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> error. The event occurs if the connection
fails somehow. The connection is closed before this event occurs.
</p>
<p>
<a href="gnet-conn.html#GNET-CONN-CONNECT:CAPS"><code class="literal">GNET_CONN_CONNECT</code></a>: Completion of <a href="gnet-conn.html#gnet-conn-connect"><code class="function">gnet_conn_connect()</code></a>.
</p>
<p>
<a href="gnet-conn.html#GNET-CONN-CLOSE:CAPS"><code class="literal">GNET_CONN_CLOSE</code></a>: Connection has been closed. The event does not
occur as a result of calling <a href="gnet-conn.html#gnet-conn-disconnect"><code class="function">gnet_conn_disconnect()</code></a>,
<a href="gnet-conn.html#gnet-conn-unref"><code class="function">gnet_conn_unref()</code></a>, or <a href="gnet-conn.html#gnet-conn-delete"><code class="function">gnet_conn_delete()</code></a>.
</p>
<p>
<a href="gnet-conn.html#GNET-CONN-TIMEOUT:CAPS"><code class="literal">GNET_CONN_TIMEOUT</code></a>: Timer set by <a href="gnet-conn.html#gnet-conn-timeout"><code class="function">gnet_conn_timeout()</code></a> expires.
</p>
<p>
<a href="gnet-conn.html#GNET-CONN-READ:CAPS"><code class="literal">GNET_CONN_READ</code></a>: Data has been read. This event occurs as a result
of calling <a href="gnet-conn.html#gnet-conn-read"><code class="function">gnet_conn_read()</code></a>, <a href="gnet-conn.html#gnet-conn-readn"><code class="function">gnet_conn_readn()</code></a>, or
<a href="gnet-conn.html#gnet-conn-readline"><code class="function">gnet_conn_readline()</code></a>. buffer and length are set in the event
object. The buffer is caller owned.
</p>
<p>
<a href="gnet-conn.html#GNET-CONN-WRITE:CAPS"><code class="literal">GNET_CONN_WRITE</code></a>: Data has been written. This event occurs as a
result of calling <a href="gnet-conn.html#gnet-conn-write"><code class="function">gnet_conn_write()</code></a> or <a href="gnet-conn.html#gnet-conn-write-direct"><code class="function">gnet_conn_write_direct()</code></a>.
</p>
<p>
<a href="gnet-conn.html#GNET-CONN-READABLE:CAPS"><code class="literal">GNET_CONN_READABLE</code></a>: The connection is readable.
</p>
<p>
<a href="gnet-conn.html#GNET-CONN-WRITABLE:CAPS"><code class="literal">GNET_CONN_WRITABLE</code></a>: The connection is writable.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>event</code></em> :</span></td>
<td> event (caller owned)
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>user_data</code></em> :</span></td>
<td> user data specified in <a href="gnet-conn.html#gnet-conn-new"><code class="function">gnet_conn_new()</code></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id370385"></a><h3>
<a name="gnet-conn-new"></a>gnet_conn_new ()</h3>
<a class="indexterm" name="id370398"></a><pre class="programlisting"><a href="gnet-conn.html#GConn">GConn</a>* gnet_conn_new (const gchar *hostname,
gint port,
<a href="gnet-conn.html#GConnFunc">GConnFunc</a> func,
gpointer user_data);</pre>
<p>
Creates a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>. A connection is not made until
<a href="gnet-conn.html#gnet-conn-connect"><code class="function">gnet_conn_connect()</code></a> is called. The callback <em class="parameter"><code>func</code></em> is called when
events occur.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>hostname</code></em> :</span></td>
<td> name of host to connect to
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>port</code></em> :</span></td>
<td> port to connect to
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>func</code></em> :</span></td>
<td> function to call on <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> events
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>user_data</code></em> :</span></td>
<td> data to pass to <em class="parameter"><code>func</code></em> on callbacks
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id370567"></a><h3>
<a name="gnet-conn-new-inetaddr"></a>gnet_conn_new_inetaddr ()</h3>
<a class="indexterm" name="id370579"></a><pre class="programlisting"><a href="gnet-conn.html#GConn">GConn</a>* gnet_conn_new_inetaddr (const <a href="gnet-inetaddr.html#GInetAddr">GInetAddr</a> *inetaddr,
<a href="gnet-conn.html#GConnFunc">GConnFunc</a> func,
gpointer user_data);</pre>
<p>
Creates a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>. A connection is not made until
<a href="gnet-conn.html#gnet-conn-connect"><code class="function">gnet_conn_connect()</code></a> is called. The callback <em class="parameter"><code>func</code></em> is called when
events occur.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>inetaddr</code></em> :</span></td>
<td> address of host to connect to
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>func</code></em> :</span></td>
<td> function to call on <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> events
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>user_data</code></em> :</span></td>
<td> data to pass to <em class="parameter"><code>func</code></em> on callbacks
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id370727"></a><h3>
<a name="gnet-conn-new-socket"></a>gnet_conn_new_socket ()</h3>
<a class="indexterm" name="id370739"></a><pre class="programlisting"><a href="gnet-conn.html#GConn">GConn</a>* gnet_conn_new_socket (<a href="gnet-tcp.html#GTcpSocket">GTcpSocket</a> *socket,
<a href="gnet-conn.html#GConnFunc">GConnFunc</a> func,
gpointer user_data);</pre>
<p>
Creates a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>. The <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> is created from the <em class="parameter"><code>socket</code></em>. The
socket is callee owned - do not delete it (meaning: <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> will take
ownership of the socket). The callback is called when events occur.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>socket</code></em> :</span></td>
<td> TCP Socket (callee owned)
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>func</code></em> :</span></td>
<td> function to call on <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> events
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>user_data</code></em> :</span></td>
<td> data to pass to <em class="parameter"><code>func</code></em> on callbacks
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id370893"></a><h3>
<a name="gnet-conn-delete"></a>gnet_conn_delete ()</h3>
<a class="indexterm" name="id370908"></a><pre class="programlisting">void gnet_conn_delete (<a href="gnet-conn.html#GConn">GConn</a> *conn);</pre>
<div class="warning" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Warning</h3>
<p><code class="literal">gnet_conn_delete</code> is deprecated and should not be used in newly-written code. Use <code class="function">g_conn_unref()</code>, which does the same.</p>
</div>
<p>
Deletes a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id370996"></a><h3>
<a name="gnet-conn-ref"></a>gnet_conn_ref ()</h3>
<a class="indexterm" name="id371008"></a><pre class="programlisting">void gnet_conn_ref (<a href="gnet-conn.html#GConn">GConn</a> *conn);</pre>
<p>
Adds a reference to a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371072"></a><h3>
<a name="gnet-conn-unref"></a>gnet_conn_unref ()</h3>
<a class="indexterm" name="id371085"></a><pre class="programlisting">void gnet_conn_unref (<a href="gnet-conn.html#GConn">GConn</a> *conn);</pre>
<p>
Removes a reference from a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>. A <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> is deleted when the
reference count reaches 0.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371158"></a><h3>
<a name="gnet-conn-set-callback"></a>gnet_conn_set_callback ()</h3>
<a class="indexterm" name="id371170"></a><pre class="programlisting">void gnet_conn_set_callback (<a href="gnet-conn.html#GConn">GConn</a> *conn,
<a href="gnet-conn.html#GConnFunc">GConnFunc</a> func,
gpointer user_data);</pre>
<p>
Sets the <a href="gnet-conn.html#GConnEvent"><span class="type">GConnEvent</span></a> callback for a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>. The callback <em class="parameter"><code>func</code></em> is
called when events occur.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>func</code></em> :</span></td>
<td> function to call on <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a> events
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>user_data</code></em> :</span></td>
<td> data to pass to <em class="parameter"><code>func</code></em> on callbacks
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371305"></a><h3>
<a name="gnet-conn-set-main-context"></a>gnet_conn_set_main_context ()</h3>
<a class="indexterm" name="id371320"></a><pre class="programlisting">gboolean gnet_conn_set_main_context (<a href="gnet-conn.html#GConn">GConn</a> *conn,
GMainContext *context);</pre>
<p>
Sets the GLib <span class="type">GMainContext</span> to use for asynchronous operations. You should
call this function right after you create <em class="parameter"><code>conn</code></em>. You must not call this
function after the actual connection process has started or watches have
been set up (e.g. for reading, writing or errors).
</p>
<p>
You are very unlikely to ever need this function.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>context</code></em> :</span></td>
<td> a <span class="type">GMainContext</span>, or NULL to use the default GLib main context
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE on success, FALSE on failure.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.0.8
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371442"></a><h3>
<a name="gnet-conn-connect"></a>gnet_conn_connect ()</h3>
<a class="indexterm" name="id371455"></a><pre class="programlisting">void gnet_conn_connect (<a href="gnet-conn.html#GConn">GConn</a> *conn);</pre>
<p>
Establishes a connection. If the connection is pending or already
established, this function does nothing. The callback is called
when the connection is established or an error occurs.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371513"></a><h3>
<a name="gnet-conn-disconnect"></a>gnet_conn_disconnect ()</h3>
<a class="indexterm" name="id371525"></a><pre class="programlisting">void gnet_conn_disconnect (<a href="gnet-conn.html#GConn">GConn</a> *conn);</pre>
<p>
Closes the connection. The connection can later be reestablished
by calling <a href="gnet-conn.html#gnet-conn-connect"><code class="function">gnet_conn_connect()</code></a> again. If the connection was not
established, this function does nothing.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371593"></a><h3>
<a name="gnet-conn-is-connected"></a>gnet_conn_is_connected ()</h3>
<a class="indexterm" name="id371605"></a><pre class="programlisting">gboolean gnet_conn_is_connected (const <a href="gnet-conn.html#GConn">GConn</a> *conn);</pre>
<p>
Checks if the connection is established.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE if the connection is established, FALSE otherwise.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371673"></a><h3>
<a name="gnet-conn-read"></a>gnet_conn_read ()</h3>
<a class="indexterm" name="id371685"></a><pre class="programlisting">void gnet_conn_read (<a href="gnet-conn.html#GConn">GConn</a> *conn);</pre>
<p>
Begins an asynchronous read. The connection callback is called
when any data has been read. This function may be called again
before the asynchronous read completes.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371743"></a><h3>
<a name="gnet-conn-readn"></a>gnet_conn_readn ()</h3>
<a class="indexterm" name="id371756"></a><pre class="programlisting">void gnet_conn_readn (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gint length);</pre>
<p>
Begins an asynchronous read of exactly <em class="parameter"><code>length</code></em> bytes. The
connection callback is called when the data has been read. This
function may be called again before the asynchronous read
completes.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>length</code></em> :</span></td>
<td> Number of bytes to read
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371841"></a><h3>
<a name="gnet-conn-readline"></a>gnet_conn_readline ()</h3>
<a class="indexterm" name="id371853"></a><pre class="programlisting">void gnet_conn_readline (<a href="gnet-conn.html#GConn">GConn</a> *conn);</pre>
<p>
Begins an asynchronous line read. The connection callback is
called when a line has been read. Lines are terminated with \n,
\r, \r\n, or \0. The terminator is \0'ed out in the buffer. The
terminating \0 is accounted for in the buffer length. This
function may be called again before the asynchronous read
completes.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id371912"></a><h3>
<a name="gnet-conn-write"></a>gnet_conn_write ()</h3>
<a class="indexterm" name="id371924"></a><pre class="programlisting">void gnet_conn_write (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gchar *buffer,
gint length);</pre>
<p>
Sets up an asynchronous write to <em class="parameter"><code>conn</code></em> from <em class="parameter"><code>buffer</code></em>. The buffer is
copied, so it may be deleted by the caller. This function can be
called again before the asynchronous write completes.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> buffer to write from
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>length</code></em> :</span></td>
<td> length of <em class="parameter"><code>buffer</code></em>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id372042"></a><h3>
<a name="gnet-conn-write-direct"></a>gnet_conn_write_direct ()</h3>
<a class="indexterm" name="id372054"></a><pre class="programlisting">void gnet_conn_write_direct (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gchar *buffer,
gint length,
GDestroyNotify buffer_destroy_cb);</pre>
<p>
Sets up an asynchronous write to <em class="parameter"><code>conn</code></em> from <em class="parameter"><code>buffer</code></em>. The buffer is
created by the caller and will not be copied. The caller needs to
make sure the buffer stays valid until <em class="parameter"><code>buffer_destroy_cb</code></em> is called.
This function can be called again before the asynchronous write
completes. <em class="parameter"><code>buffer_destroy_cb</code></em> may be <code class="literal">NULL</code>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> buffer to write from
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>length</code></em> :</span></td>
<td> length of <em class="parameter"><code>buffer</code></em>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>buffer_destroy_cb</code></em> :</span></td>
<td> function to call when buffer is no longer needed
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id372217"></a><h3>
<a name="gnet-conn-set-watch-error"></a>gnet_conn_set_watch_error ()</h3>
<a class="indexterm" name="id372229"></a><pre class="programlisting">void gnet_conn_set_watch_error (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gboolean enable);</pre>
<p>
Enables (or disables) the <a href="gnet-conn.html#GNET-CONN-ERROR:CAPS"><code class="literal">GNET_CONN_ERROR</code></a> event for a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>. If
enabled, the <a href="gnet-conn.html#GNET-CONN-ERROR:CAPS"><code class="literal">GNET_CONN_ERROR</code></a> event occurs when an error occurs.
The <em class="parameter"><code>conn</code></em> is disconnected before the callback is made.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>enable</code></em> :</span></td>
<td> enable the <a href="gnet-conn.html#GNET-CONN-READABLE:CAPS"><code class="literal">GNET_CONN_READABLE</code></a> event?
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id372353"></a><h3>
<a name="gnet-conn-set-watch-readable"></a>gnet_conn_set_watch_readable ()</h3>
<a class="indexterm" name="id372365"></a><pre class="programlisting">void gnet_conn_set_watch_readable (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gboolean enable);</pre>
<p>
Enables (or disables) the <a href="gnet-conn.html#GNET-CONN-READABLE:CAPS"><code class="literal">GNET_CONN_READABLE</code></a> event for a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>.
If enabled, the <a href="gnet-conn.html#GNET-CONN-READABLE:CAPS"><code class="literal">GNET_CONN_READABLE</code></a> event occurs when data can be
read from the socket. Read from the iochannel member of the <em class="parameter"><code>conn</code></em>.
Do not enable this while using <a href="gnet-conn.html#gnet-conn-read"><code class="function">gnet_conn_read()</code></a>, <a href="gnet-conn.html#gnet-conn-readn"><code class="function">gnet_conn_readn()</code></a>,
or <a href="gnet-conn.html#gnet-conn-readline"><code class="function">gnet_conn_readline()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>enable</code></em> :</span></td>
<td> enable the <a href="gnet-conn.html#GNET-CONN-READABLE:CAPS"><code class="literal">GNET_CONN_READABLE</code></a> event?
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id372519"></a><h3>
<a name="gnet-conn-set-watch-writable"></a>gnet_conn_set_watch_writable ()</h3>
<a class="indexterm" name="id372531"></a><pre class="programlisting">void gnet_conn_set_watch_writable (<a href="gnet-conn.html#GConn">GConn</a> *conn,
gboolean enable);</pre>
<p>
Enables (or disables) the <a href="gnet-conn.html#GNET-CONN-WRITABLE:CAPS"><code class="literal">GNET_CONN_WRITABLE</code></a> event for a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>.
If enabled, the <a href="gnet-conn.html#GNET-CONN-WRITABLE:CAPS"><span class="type">GNET_CONN_WRITABLE</span></a> event occurs when data can be
written to the socket. Write to the iochannel member of the <em class="parameter"><code>conn</code></em>.
Do not enable this while using <a href="gnet-conn.html#gnet-conn-write"><code class="function">gnet_conn_write()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>enable</code></em> :</span></td>
<td> enable the <a href="gnet-conn.html#GNET-CONN-WRITABLE:CAPS"><span class="type">GNET_CONN_WRITABLE</span></a> event?
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id372660"></a><h3>
<a name="gnet-conn-timeout"></a>gnet_conn_timeout ()</h3>
<a class="indexterm" name="id372673"></a><pre class="programlisting">void gnet_conn_timeout (<a href="gnet-conn.html#GConn">GConn</a> *conn,
guint timeout);</pre>
<p>
Sets a timeout on a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>. When the timer expires, the
<code class="literal">GNET_CONN_STATUS_TIMEOUT</code> event occurs. If there already is a
timeout set on <em class="parameter"><code>conn</code></em>, the old timeout is canceled. Set <em class="parameter"><code>timeout</code></em>
to 0 to cancel the current timeout.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>conn</code></em> :</span></td>
<td> a <a href="gnet-conn.html#GConn"><span class="type">GConn</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>timeout</code></em> :</span></td>
<td> Timeout (in milliseconds)
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1" lang="en">
<a name="id372784"></a><h2>See Also</h2>
<p>
See also GServer and the echoclient-gconn example.
</p>
</div>
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