public async Task <ICollection <KnownPeer> > DiscoverPeers()
{
_logger.LogInformation("Discovering peers");
var result = new HashSet <KnownPeer>();
try
{
var udpClient = new UdpClient(_port);
var ownAddress = _ownAddressResolver.ResolvePreferredLocalAddress();
udpClient.JoinMulticastGroup(IPAddress.Parse(_multicastAddress), ownAddress);
udpClient.Client.ReceiveTimeout = Convert.ToInt32(_interval.TotalMilliseconds + 1000);
DateTime pollUntil = DateTime.Now.Add(_interval);
while (pollUntil > DateTime.Now)
{
byte[] b = new byte[1024];
try
{
//var ipEndPoint = new IPEndPoint(IPAddress.Any, 0);
var data = await udpClient.ReceiveAsync(); //(ref ipEndPoint);
string message = Encoding.ASCII.GetString(data.Buffer);
_logger.LogDebug($"rx message {message}");
if (message.StartsWith(_serviceId))
{
var connStr = message.Remove(0, _serviceId.Length);
result.Add(new KnownPeer()
{
ConnectionString = connStr,
LastContact = DateTime.Now
});
}
}
catch (SocketException ex)
{
_logger.LogError($"SocketException polling for peers - {ex.Message}");
}
catch (Exception ex)
{
_logger.LogError($"Exception polling for peers - {ex.Message}");
}
}
}
catch (Exception ex)
{
_logger.LogError($"Error joining multicast - {ex.Message}");
}
return(result);
}
private void DiscoverOwnConnectionStrings()
{
var ownAddress = _ownAddressResolver.ResolvePreferredLocalAddress();
if (ownAddress != null)
{
_internalConnsctionString = $"tcp://{ownAddress}:{_port}";
}
//TODO: external addresses
}
private void DiscoverOwnConnectionStrings()
{
var ownAddress = _ownAddressResolver.ResolvePreferredLocalAddress();
if (ownAddress != null)
{
_internalConnectionString = $"tcp://{ownAddress}:{_port}";
}
var externalConnectionString = _natTraversal.ConfigureNatTraversal(ownAddress, (int)_port);
if (externalConnectionString != null)
{
_externalConnectionString = $"tcp://{externalConnectionString}";
}
}
