/// <summary>
/// Defines the entry point of the application.
/// </summary>
/// <param name="args">Command line arguments</param>
public static void Main(string[] args)
{
Trace.Listeners.Add(new TextWriterTraceListener(Console.Out));
if (args == null || args.Length < 1)
{
Trace.TraceError("USAGE: SecureTransportClientTool.exe <connection string> [<request length>]");
return;
}
string connectionString = args[0];
int requestLength = 128;
int waitTimeoutMs = 30000;
if (args.Length > 1)
{
requestLength = int.Parse(args[1]);
}
var path = System.Reflection.Assembly.GetExecutingAssembly().Location;
var builder = new ConfigurationBuilder().SetBasePath(Path.GetDirectoryName(path)).AddJsonFile("appSettings.json");
var appSettings = builder.Build();
var configuration = new SecureTransport.Configuration();
int maxConcurrentRequests = int.Parse(appSettings["MaxConcurrentRequests"]);
configuration.SendBufferSize = int.Parse(appSettings["SendBufferSize"]);
configuration.ReceiveBufferSize = int.Parse(appSettings["ReceiveBufferSize"]);
configuration.UseSecureConnection = bool.Parse(appSettings["SSL.UseSSL"]);
if (configuration.UseSecureConnection)
{
string[] clientThumbprints = appSettings["SSL.ClientCerts"].Split(new char[] { ';', ',' });
string[] serviceThumbprints = appSettings["SSL.ServerCerts"].Split(new char[] { ';', ',' });
configuration.ClientCertificates = SecureTransport.GetCertificatesFromThumbPrintOrFileName(clientThumbprints);
configuration.ServerCertificates = SecureTransport.GetCertificatesFromThumbPrintOrFileName(serviceThumbprints);
}
Trace.TraceInformation(
"Connecting to {0}. Using SSL={1} RequestLength={2} MaxConcurrentRequests={3}, SendBufferSize={4}, ReceiveBufferSize={5}",
connectionString,
configuration.UseSecureConnection,
requestLength,
maxConcurrentRequests,
configuration.SendBufferSize,
configuration.ReceiveBufferSize);
var connectionAvailable = new ManualResetEvent(false);
IPEndPoint[] endpoints = SecureTransport.ParseConnectionString(connectionString);
using (var transport = new SecureTransport(configuration))
{
transport.StartClient(endpoints);
Console.CancelKeyPress += (sender, eventArgs) =>
{
Trace.TraceInformation("Attempting to close client transport");
transport.Close();
};
IConnection currentConnection = null;
transport.OnNewConnection = connection =>
{
currentConnection = connection;
connectionAvailable.Set();
};
transport.OnConnectionLost = () =>
{
connectionAvailable.Reset();
};
var random = new Random();
var timer = new Stopwatch();
timer.Start();
long requestsSent = 0;
byte[] request = new byte[requestLength];
random.NextBytes(request);
var sendSemaphore = new SemaphoreSlim(maxConcurrentRequests, maxConcurrentRequests);
while (true)
{
if (!connectionAvailable.WaitOne(waitTimeoutMs))
{
Trace.TraceWarning("Connection is not available. retrying...");
continue;
}
currentConnection.OnPacketReceived = packet =>
{
};
try
{
if (!sendSemaphore.Wait(waitTimeoutMs))
{
Trace.TraceError("Timedout waiting for send semaphore...");
continue;
}
currentConnection.SendAsync(request).ContinueWith(_ => sendSemaphore.Release());
}
catch (IOException ex)
{
Trace.TraceError("IO Exception: {0}", ex.Message);
}
Interlocked.Increment(ref requestsSent);
if (timer.ElapsedMilliseconds > 5000)
{
long rate = (requestsSent * 1000) / timer.ElapsedMilliseconds;
int inflightCount = maxConcurrentRequests - sendSemaphore.CurrentCount;
Trace.TraceInformation($"Send rate={rate} InFlight={inflightCount}");
requestsSent = 0;
timer.Restart();
}
}
}
}
private static void SecureTransportInternal(Action <string> log, string testCaseName, int numberOfClients)
{
var packetCount = 0;
log($"Starting {testCaseName} ...");
SecureTransport server = null;
SecureTransport[] clients = new SecureTransport[0];
try
{
// Start the service
server = new SecureTransport(new SecureTransport.Configuration
{
UseSecureConnection = false,
IsClientCertificateRequired = false,
CommunicationProtocolVersion = RingMasterCommunicationProtocol.MaximumSupportedVersion,
});
var serverSendTask = Task.CompletedTask;
server.OnNewConnection = connection =>
{
connection.OnPacketReceived = packet =>
{
Interlocked.Increment(ref packetCount);
serverSendTask.GetAwaiter().GetResult();
serverSendTask = connection.SendAsync(packet);
};
Trace.TraceInformation("Server accepted a new connection: {0}", connection.RemoteIdentity);
};
server.StartServer(Port);
// Start the client
clients = Enumerable.Range(0, numberOfClients).Select(
_ => new SecureTransport(new SecureTransport.Configuration
{
UseSecureConnection = false,
IsClientCertificateRequired = false,
CommunicationProtocolVersion = RingMasterCommunicationProtocol.MaximumSupportedVersion,
}))
.ToArray();
Parallel.ForEach(
clients,
client => client.OnNewConnection = connection =>
{
var clientSendTask = Task.CompletedTask;
connection.OnPacketReceived = packet =>
{
clientSendTask.GetAwaiter().GetResult();
clientSendTask = connection.SendAsync(packet);
};
clientSendTask = connection.SendAsync(new byte[PacketLength]);
});
Parallel.ForEach(
clients,
client => client.StartClient(new IPEndPoint(IPAddress.Loopback, Port)));
log($" Warming up for {WarmupMilliSeconds / 1000} seconds");
Thread.Sleep(WarmupMilliSeconds);
log($" Start measuring for {MeasureMilliSeconds} seconds");
var sw = new Stopwatch();
int gen0 = GC.CollectionCount(0), gen1 = GC.CollectionCount(1), gen2 = GC.CollectionCount(2);
sw.Start();
Interlocked.Exchange(ref packetCount, 0);
for (int i = 0; i < MeasureMilliSeconds / PrintStatusInterval; i++)
{
Thread.Sleep(PrintStatusInterval);
log($" {DateTime.Now.ToString()} count={packetCount}");
}
sw.Stop();
var totalCount = packetCount;
var rate = totalCount / sw.Elapsed.TotalSeconds;
Parallel.ForEach(clients, client => client.Close());
server.Close();
log($"{testCaseName}: {totalCount} in {sw.Elapsed} with {numberOfClients} clients. QPS={rate}");
log($" Gen0={GC.CollectionCount(0) - gen0} Gen1={GC.CollectionCount(1) - gen1} Gen2={GC.CollectionCount(2) - gen2}\n");
log(string.Empty);
}
finally
{
server?.Dispose();
Parallel.ForEach(clients, client => client.Dispose());
}
}
/// <summary>
/// Defines the entry point of the application.
/// </summary>
/// <param name="args">Command line arguments</param>
public static void Main(string[] args)
{
Trace.Listeners.Add(new TextWriterTraceListener(Console.Out));
if (args == null || args.Length < 1)
{
Trace.TraceError("USAGE: SecureTransportServiceTool.exe <port>");
return;
}
int port = int.Parse(args[0]);
var configuration = new SecureTransport.Configuration();
var path = System.Reflection.Assembly.GetExecutingAssembly().Location;
var builder = new ConfigurationBuilder().SetBasePath(Path.GetDirectoryName(path)).AddJsonFile("appSettings.json");
IConfiguration appSettings = builder.Build();
int maxConcurrentRequests = int.Parse(appSettings["MaxConcurrentRequests"]);
configuration.UseSecureConnection = bool.Parse(appSettings["SSL.UseSSL"]);
configuration.SendBufferSize = int.Parse(appSettings["SendBufferSize"]);
configuration.ReceiveBufferSize = int.Parse(appSettings["ReceiveBufferSize"]);
if (configuration.UseSecureConnection)
{
string[] clientThumbprints = appSettings["SSL.ClientCerts"].Split(new char[] { ';', ',' });
string[] serviceThumbprints = appSettings["SSL.ServerCerts"].Split(new char[] { ';', ',' });
configuration.ClientCertificates = SecureTransport.GetCertificatesFromThumbPrintOrFileName(clientThumbprints);
configuration.ServerCertificates = SecureTransport.GetCertificatesFromThumbPrintOrFileName(serviceThumbprints);
}
Trace.TraceInformation(
"Listening on port {0}. Using SSL={1}, MaxConcurentRequests={2}, SendBufferSize={3}, ReceiveBufferSize={4}",
port,
configuration.UseSecureConnection,
maxConcurrentRequests,
configuration.SendBufferSize,
configuration.ReceiveBufferSize);
using (var transport = new SecureTransport(configuration))
{
var timer = Stopwatch.StartNew();
long activeConnections = 0;
long packetsReceived = 0;
Task serverTask = transport.StartServer(port);
Console.CancelKeyPress += (sender, eventArgs) =>
{
Trace.TraceInformation("Attempting to close server transport");
transport.Close();
};
var semaphore = new SemaphoreSlim(maxConcurrentRequests, maxConcurrentRequests);
transport.OnNewConnection = connection =>
{
Trace.TraceInformation("Connection Established with {0}", connection.RemoteEndPoint);
Interlocked.Increment(ref activeConnections);
connection.OnPacketReceived = packet =>
{
semaphore.Wait();
Interlocked.Increment(ref packetsReceived);
connection.SendAsync(packet).ContinueWith(_ => semaphore.Release());
};
connection.OnConnectionLost = () =>
{
Trace.TraceInformation("Connection with {0} was lost", connection.RemoteEndPoint);
Interlocked.Decrement(ref activeConnections);
};
};
while (!serverTask.Wait(5000))
{
timer.Stop();
long rate = (long)(packetsReceived * 1000) / timer.ElapsedMilliseconds;
int inflightCount = maxConcurrentRequests - semaphore.CurrentCount;
Trace.TraceInformation($"ActiveConnections={activeConnections}, RequestRate {rate} InFlight count={inflightCount}");
packetsReceived = 0;
timer.Restart();
}
}
}