/**
* @param e Edge to close
* @param cm message to send to other node
* This method is used if we want to use a particular CloseMessage
* If not, we can use the method with the same name with one fewer
* parameters
*/
public void GracefullyClose(Edge e, string message)
{
/**
* Close any connection on this edge, and
* put the edge into the list of unconnected edges
*/
_connection_table.Disconnect(e);
ListDictionary close_info = new ListDictionary();
string reason = message;
if (reason != String.Empty)
{
close_info["reason"] = reason;
}
ProtocolLog.WriteIf(ProtocolLog.EdgeClose, String.Format(
"GracefulCLose - " + e + ": " + reason));
var results = new BCon.Channel(1);
EventHandler close_eh = delegate(object o, EventArgs args) {
e.Close();
};
results.CloseEvent += close_eh;
try {
_rpc.Invoke(e, results, "sys:link.Close", close_info);
}
catch { Close(e); }
}
/**
* Handle the notification that the other side is going to close the edge
*/
public IDictionary Close(IDictionary close_message, ISender edge)
{
Edge from = GetEdge(edge);
ConnectionTable tab = _node.ConnectionTable;
/**
* In order to make sure that we close gracefully, we simply
* move this edge to the unconnected list. The node will
* close edges that have been there for some time
*/
Connection c = tab.GetConnection(from);
if (ProtocolLog.LinkDebug.Enabled)
{
ProtocolLog.Write(ProtocolLog.LinkDebug, String.Format(
"sys:link.Close on {0} connection: {1}", from, c));
}
tab.Disconnect(from);
/**
* Release locks when the close message arrives; do not wait
* until the edge actually closes.
*/
CloseHandler(from, null);
if (ProtocolLog.EdgeClose.Enabled)
{
String reason = String.Empty;
if (close_message.Contains(reason))
{
reason = (String)close_message["reason"];
}
ProtocolLog.Write(ProtocolLog.EdgeClose, String.Format(
"sys:link.Close - " + from + ": " + reason));
}
/**
* Try to close the edge after a small time span:
*/
Brunet.Util.FuzzyTimer.Instance.DoAfter(delegate(DateTime now) {
_node.EnqueueAction(new Node.GracefulCloseAction(_node, from, "CPH, delayed close"));
}, 5000, 1000);
return(new ListDictionary());
}
