public async Task StartAsync(CancellationToken cancellationToken)
{
var discoverer = new Discoverer();
if (cancellationToken.IsCancellationRequested)
{
return;
}
try
{
while (!cancellationToken.IsCancellationRequested)
{
var agents = new List <string>();
void OnAgentFound(object sender, AgentFoundEventArgs args)
{
agents.Add(args.Agent.Address.ToString());
};
discoverer.AgentFound += OnAgentFound;
discoverer.AgentFound += OnAgentFound;
await discoverer.DiscoverAsync(VersionCode.V3, new IPEndPoint(IPAddress.Broadcast, 161), new OctetString("public"), 5000);
var discoveredAgents = agents.Select(x =>
new AgentDeviceInfo(x, VersionCode.V3.ToString())).ToArray();
var currentAgents = _activeAgentsCache.GetActiveDevices();
var newAgents = discoveredAgents.Except(currentAgents);
var inactiveAgents = currentAgents.Except(discoveredAgents);
foreach (var newAgent in newAgents)
{
await _agentsHubContext.Clients.All.SendAsync("NEW-AGENT-DISCOVERED", newAgent, cancellationToken);
_activeAgentsCache.AddOrUpdateDevice(newAgent);
Console.WriteLine($"New agent discovered: {newAgent}");
}
foreach (var inactiveAgent in inactiveAgents)
{
await _agentsHubContext.Clients.All.SendAsync("AGENT-DISCONNECTED", inactiveAgent, cancellationToken);
_activeAgentsCache.DeleteDevice(inactiveAgent);
Console.WriteLine($"Agent ({inactiveAgent}) became inactive");
}
await Task.Delay(5000, cancellationToken);
}
}
catch (TaskCanceledException)
{
}
finally
{
_activeAgentsCache.Clear();
}
}
public IActionResult Get()
{
var devices = _activeAgentsCache.GetActiveDevices();
return(Ok(devices));
}
