|
public AddPollInSocket ( [ socket, [ |
||
| socket | [ | the Socket to add |
| callback | [ |
the Action to add |
| return | void | |
static void Main(string[] args)
{
using (var context = NetMQContext.Create())
using (var udpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
using (var poller = new Poller())
{
// Ask OS to let us do broadcasts from socket
udpSocket.SetSocketOption(SocketOptionLevel.Udp, SocketOptionName.Broadcast, 1);
// Bind UDP socket to local port so we can receive pings
udpSocket.Bind(new IPEndPoint(IPAddress.Any, PingPortNumber));
// We use zmq_poll to wait for activity on the UDP socket, because
// this function works on non-0MQ file handles. We send a beacon
// once a second, and we collect and report beacons that come in
// from other nodes:
poller.AddPollInSocket(udpSocket, socket => { });
poller.PollTillCancelledNonBlocking();
//poller.ad
//var poller = new z
//var pollItemsList = new List<ZPollItem>();
//pollItemsList.Add(new ZPollItem(ZPoll.In));
//var pollItem = ZPollItem.CreateReceiver();
//ZMessage message;
//ZError error;
//pollItem.ReceiveMessage(udpSocket, out message, out error);
//pollItem.ReceiveMessage = (ZSocket socket, out ZMessage message, out ZError error) =>
// Send first ping right away
}
}
private void Configure([NotNull] string interfaceName, int port)
{
// In case the beacon was configured twice
if (m_udpSocket != null)
{
m_poller.RemovePollInSocket(m_udpSocket);
m_udpSocket.Close();
}
m_udpPort = port;
m_udpSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
m_poller.AddPollInSocket(m_udpSocket, OnUdpReady);
// Ask operating system for broadcast permissions on socket
m_udpSocket.EnableBroadcast = true;
// Allow multiple owners to bind to socket; incoming
// messages will replicate to each owner
m_udpSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
IPAddress bindTo = null;
IPAddress sendTo = null;
if (interfaceName == "*")
{
bindTo = IPAddress.Any;
sendTo = IPAddress.Broadcast;
}
else
{
var interfaceCollection = new InterfaceCollection();
var interfaceAddress = !string.IsNullOrEmpty(interfaceName)
? IPAddress.Parse(interfaceName)
: null;
foreach (var @interface in interfaceCollection)
{
if (interfaceAddress == null || @interface.Address.Equals(interfaceAddress))
{
sendTo = @interface.BroadcastAddress;
bindTo = @interface.Address;
break;
}
}
}
if (bindTo != null)
{
m_broadcastAddress = new IPEndPoint(sendTo, m_udpPort);
m_udpSocket.Bind(new IPEndPoint(bindTo, m_udpPort));
string hostname = "";
try
{
if (!IPAddress.Any.Equals(bindTo) && !IPAddress.IPv6Any.Equals(bindTo))
{
var host = Dns.GetHostEntry(bindTo);
hostname = host != null ? host.HostName : "";
}
}
catch (Exception)
{}
m_pipe.Send(hostname);
}
}
