protected void DoBeat()
{
while (true)
{
Thread.Sleep(HEARTBEAT_PERIOD);
HashSet <string> nodes = new HashSet <string>(View.Nodes);
foreach (var node in nodes)
{
try
{
RemotingEndpoint remotingEndpoint = GetRemoteEndpoint(node);
BeatDelegate beatDelegate = remotingEndpoint.Beat;
beatDelegate.BeginInvoke(EndpointURL, asyncResult =>
{
AsyncResult ar = (AsyncResult)asyncResult;
BeatDelegate remoteDel = (BeatDelegate)ar.AsyncDelegate;
remoteDel.EndInvoke(asyncResult);
}, null);
} catch (RemotingException)
{
// do nothing
}
}
}
}
public static RemotingEndpoint GetRemoteEndpoint(string url)
{
RemotingEndpoint remote = (RemotingEndpoint)Activator.GetObject(
typeof(RemotingEndpoint), url);
return(remote);
}
private View DoGetView(string remotingEndpointUrl)
{
RemotingEndpoint remotingEndpoint = GetRemoteEndpoint(remotingEndpointUrl);
GetViewDelegate getViewDelegate = remotingEndpoint.GetView;
var asyncResult = getViewDelegate.BeginInvoke(null, null);
return(getViewDelegate.EndInvoke(asyncResult));
}
private HashSet <string> DoJoinView(string remotingEndpointUrl, HashSet <string> view)
{
RemotingEndpoint remotingEndpoint = GetRemoteEndpoint(remotingEndpointUrl);
JoinViewDelegate joinViewDelegate = remotingEndpoint.JoinView;
var asyncResult = joinViewDelegate.BeginInvoke(view, null, null);
return(joinViewDelegate.EndInvoke(asyncResult));
}
public Message SendMessageToRemote(RemotingEndpoint remotingEndpoint, Message message)
{
try {
RemoteAsyncDelegate remoteDel = new RemoteAsyncDelegate(remotingEndpoint.OnReceiveMessage);
IAsyncResult ar = remoteDel.BeginInvoke(message, null, null);
//ar.AsyncWaitHandle.WaitOne();
// This should not be necessary, since EndInvoke already waits for completion
// unless we want to provide a timeout a do something with it
return(remoteDel.EndInvoke(ar));
}
catch (Exception e) {
Log("Server at " + remotingEndpoint.EndpointURL + " is unreachable. (For more detail: " + e.Message + ")");
throw new SocketException();
}
}
public Message SendMessageToRemoteURL(string remoteURL, Message message)
{
RemotingEndpoint remotingEndpoint = GetRemoteEndpoint(remoteURL);
return(SendMessageToRemote(remotingEndpoint, message));
}
