Server stops responding after 65536 requests in simple test app #95
Description
I'm running into an issue where the CoAP server seemingly stops responding to the client after 2**16 requests in one of my applications.
I have separated the issue into a simple test server+client as outlined below which replicates the issue.
Even though the client sends 100k requests, only 65k of them are received by the server.
Adding a sleep when sending requests, waiting for ACK etc does not seem to make a difference.
Any ideas on how to resolve the issue?
Server code:
namespace CoapTestServer
{
internal class Program
{
static void Main(string[] args)
{
CoapServer server = new CoapServer();
server.Add(new TestResource());
server.Start();
Console.WriteLine("Running...");
Console.ReadKey();
}
}
class TestResource : Resource
{
static long connectionCount = 0;
public TestResource() : base("test-resource")
{
}
protected override void DoGet(CoapExchange exchange)
{
long newCount = Interlocked.Increment(ref connectionCount);
Console.WriteLine($"Server received {newCount} requests");
exchange.Respond("This is a response");
}
}
}
Client code:
Uri hostUri = new Uri("coap://localhost/test-resource");
for (int i = 0; i < 100 * 1000; i++)
{
try
{
Request request = new(Method.GET, false)
{
URI = hostUri,
};
request.Send();
request.WaitForResponse();
Console.WriteLine($"Client sent {i} requests");
}
catch (Exception ex)
{
Console.WriteLine($"{ex.Message}");
}
}
Console.WriteLine("Finished, press enter to exit");
Console.ReadLine();
Output:
I am using NuGet package 1.10.0 of "Com.AugustCellars.CoAP" with .NET 7.0 and Visual Studio 2022 on Windows 10.