private async Task PruneZombieConnectionsAsync(IRealm realm)
{
var clientIds = realm.GetClientIds();
var now = DateTime.UtcNow;
var aliveTimeout = TimeSpan.FromSeconds(60);
var count = 0;
foreach (var clientId in clientIds)
{
var client = realm.GetClient(clientId);
var timeSinceLastHeartbeat = now - client.GetLastHeartbeat();
if (timeSinceLastHeartbeat < aliveTimeout)
{
continue;
}
var socket = client.GetSocket();
try
{
await socket?.CloseAsync($"Zombie connection, time since last heartbeat: {timeSinceLastHeartbeat.TotalSeconds}s");
}
finally
{
realm.ClearMessageQueue(clientId);
realm.RemoveClientById(clientId);
socket?.Dispose();
}
count++;
}
_logger.LogInformation($"Pruned zombie connections for {count} peers.");
}