public static void Main()
{
var ctx = new Aeron.Context()
.AvailableImageHandler(SamplesUtil.PrintAvailableImage)
.UnavailableImageHandler(SamplesUtil.PrintUnavailableImage);
IIdleStrategy idleStrategy = new BusySpinIdleStrategy();
Console.WriteLine("Subscribing Ping at " + PingChannel + " on stream Id " + PingStreamID);
Console.WriteLine("Publishing Pong at " + PongChannel + " on stream Id " + PongStreamID);
var running = new AtomicBoolean(true);
Console.CancelKeyPress += (_, e) => running.Set(false);
using (var aeron = Aeron.Connect(ctx))
using (var pongPublication = aeron.AddPublication(PongChannel, PongStreamID))
using (var pingSubscription = aeron.AddSubscription(PingChannel, PingStreamID))
{
FragmentHandler dataHandler = (buffer, offset, length, header) => PingHandler(pongPublication, buffer, offset, length);
while (running.Get())
{
idleStrategy.Idle(pingSubscription.Poll(dataHandler, FrameCountLimit));
}
Console.WriteLine("Shutting down...");
}
}
public static async Task Main(string[] args)
{
var listenPort = ushort.Parse(args[0]);
var servicePort = ushort.Parse(args[1]);
var seeds = args.Skip(2).Select(Utils.IPEndPointFromString).ToArray();
var logger = Utils.CreateLogger <Program>();
var gossiper = await StartGossiper(listenPort, servicePort, seeds, logger);
const int fragmentLimitCount = 10;
string channel = "aeron:udp?endpoint=localhost:" + servicePort;
// A unique identifier for a stream within a channel. Stream ID 0 is reserved
// for internal use and should not be used by applications.
const int streamId = 10;
Console.WriteLine("Subscribing to " + channel + " on stream Id " + streamId);
// dataHandler method is called for every new datagram received
var fragmentHandler = HandlerHelper.ToFragmentHandler((buffer, offset, length, header) =>
{
var data = new byte[length];
buffer.GetBytes(offset, data);
Console.WriteLine($"Received message ({Encoding.UTF8.GetString(data)}) to stream {streamId:D} from session {header.SessionId:x} term id {header.TermId:x} term offset {header.TermOffset:D} ({length:D}@{offset:D})");
});
// Create a context, needed for client connection to media driver
// A separate media driver process need to run prior to running this application
var ctx = new Aeron.Context();
// Create an Aeron instance with client-provided context configuration, connect to the
// media driver, and add a subscription for the given channel and stream using the supplied
// dataHandler method, which will be called with new messages as they are received.
// The Aeron and Subscription classes implement AutoCloseable, and will automatically
// clean up resources when this try block is finished.
using (var aeron = Aeron.Connect(ctx))
using (var subscription = aeron.AddSubscription(channel, streamId))
{
IIdleStrategy idleStrategy = new BusySpinIdleStrategy();
// Try to read the data from subscriber
while (true)
{
// poll delivers messages to the dataHandler as they arrive
// and returns number of fragments read, or 0
// if no data is available.
var fragmentsRead = subscription.Poll(fragmentHandler, fragmentLimitCount);
// Give the IdleStrategy a chance to spin/yield/sleep to reduce CPU
// use if no messages were received.
idleStrategy.Idle(fragmentsRead);
}
}
}
public static void Main()
{
ComputerSpecifications.Dump();
var reporter = new RateReporter(1000, PrintRate);
var rateReporterHandler = SamplesUtil.RateReporterHandler(reporter);
var context = new Aeron.Context();
var running = new AtomicBoolean(true);
var reportThread = new Thread(reporter.Run);
var subscribeThread = new Thread(subscription => SamplesUtil.SubscriberLoop(rateReporterHandler, FragmentCountLimit, running)((Subscription)subscription));
using (var aeron = Aeron.Connect(context))
using (var publication = aeron.AddPublication(Channel, StreamID))
using (var subscription = aeron.AddSubscription(Channel, StreamID))
using (var byteBuffer = BufferUtil.AllocateDirectAligned(MessageLength, BitUtil.CACHE_LINE_LENGTH))
using (var buffer = new UnsafeBuffer(byteBuffer))
{
reportThread.Start();
subscribeThread.Start(subscription);
do
{
Console.WriteLine("Streaming {0:G} messages of size {1:G} bytes to {2} on stream Id {3}", NumberOfMessages, MessageLength, Channel, StreamID);
_printingActive = true;
long backPressureCount = 0;
for (long i = 0; i < NumberOfMessages; i++)
{
buffer.PutLong(0, i);
OfferIdleStrategy.Reset();
while (publication.Offer(buffer, 0, buffer.Capacity) < 0)
{
OfferIdleStrategy.Idle();
backPressureCount++;
}
}
Console.WriteLine("Done streaming. backPressureRatio=" + (double)backPressureCount / NumberOfMessages);
if (0 < LingerTimeoutMs)
{
Console.WriteLine("Lingering for " + LingerTimeoutMs + " milliseconds...");
Thread.Sleep((int)LingerTimeoutMs);
}
_printingActive = false;
} while (Console.ReadLine() != "x");
reporter.Halt();
running.Set(false);
if (!subscribeThread.Join(5000))
{
Console.WriteLine("Warning: not all tasks completed promptly");
}
}
}
public static void Main()
{
// Maximum number of message fragments to receive during a single 'poll' operation
const int fragmentLimitCount = 10;
// The channel (an endpoint identifier) to receive messages from
const string channel = "aeron:udp?endpoint=localhost:40123";
// A unique identifier for a stream within a channel. Stream ID 0 is reserved
// for internal use and should not be used by applications.
const int streamId = 10;
Console.WriteLine("Subscribing to " + channel + " on stream Id " + streamId);
var running = new AtomicBoolean(true);
// Register a SIGINT handler for graceful shutdown.
Console.CancelKeyPress += (s, e) => running.Set(false);
// dataHandler method is called for every new datagram received
FragmentHandler fragmentHandler = (buffer, offset, length, header) =>
{
var data = new byte[length];
buffer.GetBytes(offset, data);
Console.WriteLine($"Received message ({Encoding.UTF8.GetString(data)}) to stream {streamId:D} from session {header.SessionId:x} term id {header.TermId:x} term offset {header.TermOffset:D} ({length:D}@{offset:D})");
// Received the intended message, time to exit the program
running.Set(false);
};
// Create a context, needed for client connection to media driver
// A separate media driver process need to run prior to running this application
var ctx = new Aeron.Context();
// Create an Aeron instance with client-provided context configuration, connect to the
// media driver, and add a subscription for the given channel and stream using the supplied
// dataHandler method, which will be called with new messages as they are received.
// The Aeron and Subscription classes implement AutoCloseable, and will automatically
// clean up resources when this try block is finished.
using (var aeron = Aeron.Connect(ctx))
using (var subscription = aeron.AddSubscription(channel, streamId))
{
IIdleStrategy idleStrategy = new BusySpinIdleStrategy();
// Try to read the data from subscriber
while (running.Get())
{
// poll delivers messages to the dataHandler as they arrive
// and returns number of fragments read, or 0
// if no data is available.
var fragmentsRead = subscription.Poll(fragmentHandler, fragmentLimitCount);
// Give the IdleStrategy a chance to spin/yield/sleep to reduce CPU
// use if no messages were received.
idleStrategy.Idle(fragmentsRead);
}
Console.WriteLine("Press any key...");
Console.ReadLine();
}
}