* Eventually, some TCP-specific socket stuff will be added.
*
* Since: 2.22
- **/
+ */
#include "config.h"
#include "gtcpconnection.h"
+#include "gasyncresult.h"
+#include "gsimpleasyncresult.h"
+#include "giostream.h"
#include "glibintl.h"
#include "gioalias.h"
g_socket_connection_factory_register_type (g_define_type_id,
G_SOCKET_FAMILY_IPV4,
G_SOCKET_TYPE_STREAM,
- 0);
+ G_SOCKET_PROTOCOL_DEFAULT);
g_socket_connection_factory_register_type (g_define_type_id,
G_SOCKET_FAMILY_IPV6,
G_SOCKET_TYPE_STREAM,
- 0);
+ G_SOCKET_PROTOCOL_DEFAULT);
g_socket_connection_factory_register_type (g_define_type_id,
G_SOCKET_FAMILY_IPV4,
G_SOCKET_TYPE_STREAM,
- g_socket_protocol_id_lookup_by_name ("tcp"));
+ G_SOCKET_PROTOCOL_TCP);
g_socket_connection_factory_register_type (g_define_type_id,
G_SOCKET_FAMILY_IPV6,
G_SOCKET_TYPE_STREAM,
- g_socket_protocol_id_lookup_by_name ("tcp"));
+ G_SOCKET_PROTOCOL_TCP);
);
+static gboolean g_tcp_connection_close (GIOStream *stream,
+ GCancellable *cancellable,
+ GError **error);
+static void g_tcp_connection_close_async (GIOStream *stream,
+ int io_priority,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+
+struct _GTcpConnectionPrivate
+{
+ guint graceful_disconnect : 1;
+};
+
+
+enum
+{
+ PROP_0,
+ PROP_GRACEFUL_DISCONNECT
+};
+
static void
g_tcp_connection_init (GTcpConnection *connection)
{
+ connection->priv = G_TYPE_INSTANCE_GET_PRIVATE (connection,
+ G_TYPE_TCP_CONNECTION,
+ GTcpConnectionPrivate);
+ connection->priv->graceful_disconnect = FALSE;
+}
+
+static void
+g_tcp_connection_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GTcpConnection *connection = G_TCP_CONNECTION (object);
+
+ switch (prop_id)
+ {
+ case PROP_GRACEFUL_DISCONNECT:
+ g_value_set_boolean (value, connection->priv->graceful_disconnect);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static void
+g_tcp_connection_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GTcpConnection *connection = G_TCP_CONNECTION (object);
+
+ switch (prop_id)
+ {
+ case PROP_GRACEFUL_DISCONNECT:
+ g_tcp_connection_set_graceful_disconnect (connection,
+ g_value_get_boolean (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
}
static void
g_tcp_connection_class_init (GTcpConnectionClass *class)
{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (class);
+ GIOStreamClass *stream_class = G_IO_STREAM_CLASS (class);
+
+ g_type_class_add_private (class, sizeof (GTcpConnectionPrivate));
+
+ gobject_class->set_property = g_tcp_connection_set_property;
+ gobject_class->get_property = g_tcp_connection_get_property;
+
+ stream_class->close_fn = g_tcp_connection_close;
+ stream_class->close_async = g_tcp_connection_close_async;
+
+ g_object_class_install_property (gobject_class, PROP_GRACEFUL_DISCONNECT,
+ g_param_spec_boolean ("graceful-disconnect",
+ P_("Graceful Disconnect"),
+ P_("Whether or not close does a graceful disconnect"),
+ FALSE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+}
+
+static gboolean
+g_tcp_connection_close (GIOStream *stream,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GTcpConnection *connection = G_TCP_CONNECTION (stream);
+ GSocket *socket;
+ char buffer[1024];
+ gssize ret;
+ GError *my_error;
+ gboolean had_error;
+
+ socket = g_socket_connection_get_socket (G_SOCKET_CONNECTION (stream));
+ had_error = FALSE;
+
+ if (connection->priv->graceful_disconnect &&
+ !g_cancellable_is_cancelled (cancellable) /* Cancelled -> close fast */)
+ {
+ if (!g_socket_shutdown (socket, FALSE, TRUE, error))
+ {
+ error = NULL; /* Ignore further errors */
+ had_error = TRUE;
+ }
+ else
+ {
+ while (TRUE)
+ {
+ my_error = NULL;
+ ret = g_socket_receive (socket, buffer, sizeof (buffer),
+ cancellable, &my_error);
+ if (ret < 0)
+ {
+ if (g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK))
+ g_error_free (my_error);
+ else
+ {
+ had_error = TRUE;
+ g_propagate_error (error, my_error);
+ error = NULL;
+ break;
+ }
+ }
+ if (ret == 0)
+ break;
+ }
+ }
+ }
+
+ return G_IO_STREAM_CLASS (g_tcp_connection_parent_class)
+ ->close_fn (stream, cancellable, error) && !had_error;
+}
+
+typedef struct {
+ GSimpleAsyncResult *res;
+ GCancellable *cancellable;
+} CloseAsyncData;
+
+static void
+close_async_data_free (CloseAsyncData *data)
+{
+ g_object_unref (data->res);
+ if (data->cancellable)
+ g_object_unref (data->cancellable);
+ g_free (data);
+}
+
+static void
+async_close_finish (CloseAsyncData *data,
+ GError *error,
+ gboolean in_mainloop)
+{
+ GIOStreamClass *parent = G_IO_STREAM_CLASS (g_tcp_connection_parent_class);
+ GIOStream *stream;
+ GError *my_error;
+
+ stream = G_IO_STREAM (g_async_result_get_source_object (G_ASYNC_RESULT (data->res)));
+
+ /* Doesn't block, ignore error */
+ if (error)
+ {
+ parent->close_fn (stream, data->cancellable, NULL);
+ g_simple_async_result_set_from_error (data->res, error);
+ }
+ else
+ {
+ my_error = NULL;
+ parent->close_fn (stream, data->cancellable, &my_error);
+ if (my_error)
+ {
+ g_simple_async_result_set_from_error (data->res, my_error);
+ g_error_free (my_error);
+ }
+ }
+
+ if (in_mainloop)
+ g_simple_async_result_complete (data->res);
+ else
+ g_simple_async_result_complete_in_idle (data->res);
+}
+
+static gboolean
+close_read_ready (GSocket *socket,
+ GIOCondition condition,
+ CloseAsyncData *data)
+{
+ GError *error = NULL;
+ char buffer[1024];
+ gssize ret;
+
+ ret = g_socket_receive (socket, buffer, sizeof (buffer),
+ data->cancellable, &error);
+ if (ret < 0)
+ {
+ if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_WOULD_BLOCK))
+ g_error_free (error);
+ else
+ {
+ async_close_finish (data, error, TRUE);
+ g_error_free (error);
+ return FALSE;
+ }
+ }
+
+ if (ret == 0)
+ {
+ async_close_finish (data, NULL, TRUE);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+static void
+g_tcp_connection_close_async (GIOStream *stream,
+ int io_priority,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GTcpConnection *connection = G_TCP_CONNECTION (stream);
+ CloseAsyncData *data;
+ GSocket *socket;
+ GSource *source;
+ GError *error;
+
+ if (connection->priv->graceful_disconnect &&
+ !g_cancellable_is_cancelled (cancellable) /* Cancelled -> close fast */)
+ {
+ data = g_new (CloseAsyncData, 1);
+ data->res =
+ g_simple_async_result_new (G_OBJECT (stream), callback, user_data,
+ g_tcp_connection_close_async);
+ if (cancellable)
+ data->cancellable = g_object_ref (cancellable);
+ else
+ data->cancellable = NULL;
+
+ socket = g_socket_connection_get_socket (G_SOCKET_CONNECTION (stream));
+
+ error = NULL;
+ if (!g_socket_shutdown (socket, FALSE, TRUE, &error))
+ {
+ async_close_finish (data, error, FALSE);
+ g_error_free (error);
+ close_async_data_free (data);
+ return;
+ }
+
+ source = g_socket_create_source (socket, G_IO_IN, cancellable);
+ g_source_set_callback (source,
+ (GSourceFunc) close_read_ready,
+ data, (GDestroyNotify)close_async_data_free);
+ g_source_attach (source, g_main_context_get_thread_default ());
+ g_source_unref (source);
+
+ return;
+ }
+
+ G_IO_STREAM_CLASS (g_tcp_connection_parent_class)
+ ->close_async (stream, io_priority, cancellable, callback, user_data);
}
+/**
+ * g_tcp_connection_set_graceful_disconnect:
+ * @connection: a #GTcpConnection
+ * @graceful_disconnect: Whether to do graceful disconnects or not
+ *
+ * This enabled graceful disconnects on close. A graceful disconnect
+ * means that we signal the recieving end that the connection is terminated
+ * and wait for it to close the connection before closing the connection.
+ *
+ * A graceful disconnect means that we can be sure that we successfully sent
+ * all the outstanding data to the other end, or get an error reported.
+ * However, it also means we have to wait for all the data to reach the
+ * other side and for it to acknowledge this by closing the socket, which may
+ * take a while. For this reason it is disabled by default.
+ *
+ * Since: 2.22
+ */
+void
+g_tcp_connection_set_graceful_disconnect (GTcpConnection *connection,
+ gboolean graceful_disconnect)
+{
+ graceful_disconnect = !!graceful_disconnect;
+ if (graceful_disconnect != connection->priv->graceful_disconnect)
+ {
+ connection->priv->graceful_disconnect = graceful_disconnect;
+ g_object_notify (G_OBJECT (connection), "graceful-disconnect");
+ }
+}
+
+/**
+ * g_tcp_connection_get_graceful_disconnect:
+ * @connection: a #GTcpConnection
+ *
+ * Checks if graceful disconnects are used. See
+ * g_tcp_connection_set_graceful_disconnect().
+ *
+ * Returns: %TRUE if graceful disconnect is used on close, %FALSE otherwise
+ *
+ * Since: 2.22
+ */
+gboolean
+g_tcp_connection_get_graceful_disconnect (GTcpConnection *connection)
+{
+ return connection->priv->graceful_disconnect;
+}
+
+
#define __G_TCP_CONNECTION_C__
#include "gioaliasdef.c"
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