/// <summary>
/// Sends the query message to the named service instance and waits for
/// a reply.
/// </summary>
/// <param name="serviceName">The service name.</param>
/// <param name="query">The query message.</param>
/// <returns>The reply message.</returns>
/// <remarks>
/// Throws a TimeoutException if the service doesn't respond by MaxWaitTime.
/// </remarks>
private ServiceMsg Query(string serviceName, ServiceMsg query)
{
using (TimedLock.Lock(this))
{
refID = Helper.NewGuid();
query.RefID = refID;
}
query["Reply-To"] = ControlMemPrefix + id.ToString();
outbox.Send(ServiceMemPrefix + serviceName, query.ToBytes());
if (!onReply.WaitOne(MaxWaitTime, false))
{
throw new System.TimeoutException();
}
if (reply.Command != "Ack")
{
throw new InvalidOperationException("Invalid Service response.");
}
return(reply);
}
/// <summary>
/// Sends a reply to the query passed.
/// </summary>
/// <param name="query">The query message received.</param>
/// <param name="ack">The reply.</param>
private void ReplyTo(ServiceMsg query, ServiceMsg ack)
{
ack.RefID = query.RefID;
outbox.Send(query["Reply-To"], ack.ToBytes());
}
