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| using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using com.latencybusters.lbm;
public class late_join_receiver {
static void Main(String[] args) {
LBMContext ctx = null; /* Context object: container for UM "instance". */
LBMReceiver lateRcv = null; /* Receiver object: for sending messages. */
LBMReceiverCallback cb = new LBMReceiverCallback(onReceive); /* Wrapping the onReceive functor in a callback */
LBMSource early_src = null; /* Source object: for sending messages. */
ctx = new LBMContext();
try
{
LBMTopic srcTopic = null;
LBMSourceAttributes srcAttr = null;
srcAttr = new LBMSourceAttributes();
srcAttr.setValue("late_join", "1");
srcAttr.setValue("retransmit_retention_size_threshold", "1");
srcTopic = ctx.allocTopic("test.topic", srcAttr);
early_src = new LBMSource(ctx, srcTopic);
early_src.send(Encoding.ASCII.GetBytes("test"), 4, LBM.MSG_FLUSH | LBM.SRC_NONBLOCK);
}
catch (LBMException ex)
{
System.Console.Error.WriteLine("Error initializing LBM objects: " + ex.Message);
System.Environment.Exit(1);
}
{
LBMTopic topic = null;
topic = ctx.lookupTopic("test.topic");
lateRcv = new LBMReceiver(ctx, topic, onReceive, null, null);
}
Thread.Sleep(100);
try {
early_src.close();
lateRcv.close();
ctx.close();
}
catch(LBMException ex)
{
System.Console.Error.WriteLine("Error closing LBM objects: " + ex.Message);
System.Environment.Exit(1);
}
}
static int onReceive(Object cbArg, LBMMessage msg)
{
switch (msg.type())
{
case LBM.MSG_DATA:
if((msg.flags() & LBM.MSG_FLAG_OTR)==LBM.MSG_FLAG_OTR)
System.Console.Out.WriteLine("Processing OTR Message. SQN: " + msg.sequenceNumber());
else if((msg.flags() & LBM.MSG_FLAG_RETRANSMIT)==LBM.MSG_FLAG_RETRANSMIT)
System.Console.Out.WriteLine("Processing Late Join Message. SQN: " + msg.sequenceNumber());
else
System.Console.Out.WriteLine("Processing Normal Message. SQN: " + msg.sequenceNumber());
System.Console.Out.WriteLine("Msg Received: " + msg.dataString());
break;
case LBM.MSG_BOS:
System.Console.Out.WriteLine("[" + msg.topicName() + "][" + msg.source() + "], Beginning of Transport Session");
break;
case LBM.MSG_EOS:
System.Console.Out.WriteLine("[" + msg.topicName() + "][" + msg.source() + "], End of Transport Session");
break;
default:
System.Console.Out.WriteLine("Unknown lbm_msg_t type " + msg.type() + " [" + msg.topicName() + "][" + msg.source() + "]");
break;
}
System.Console.Out.Flush();
msg.dispose();
return 0;
}
}
|