private void FrameSentHandler(IRadio sender, byte[] packet)
{
var senderPosition = radios[sender];
var currentEmulation = EmulationManager.Instance.CurrentEmulation;
currentEmulation.TryGetEmulationElementName(sender, out var senderName);
FrameProcessed?.Invoke(this, sender, packet);
if (!mediumFunction.CanTransmit(senderPosition))
{
this.NoisyLog("Packet from {0} can't be transmitted, size {1}.", senderName, packet.Length);
return;
}
foreach (var radioAndPosition in radios.Where(x => x.Key != sender))
{
var receiver = radioAndPosition.Key;
currentEmulation.TryGetEmulationElementName(receiver, out var receiverName);
if (!mediumFunction.CanReach(senderPosition, radioAndPosition.Value) || receiver.Channel != sender.Channel)
{
this.NoisyLog("Packet {0} -> {1} NOT delivered, size {2}.", senderName, receiverName, packet.Length);
return;
}
receiver.GetMachine().HandleTimeDomainEvent(receiver.ReceiveFrame, packet.ToArray(), TimeDomainsManager.Instance.VirtualTimeStamp, () =>
{
this.NoisyLog("Packet {0} -> {1} delivered, size {2}.", senderName, receiverName, packet.Length);
FrameTransmitted?.Invoke(this, sender, receiver, packet);
});
}
}
private void ForwardToReceiver(EthernetFrame frame, IMACInterface sender)
{
this.Log(LogLevel.Noisy, "Received frame from interface {0}", sender.MAC);
if (!frame.DestinationMAC.HasValue)
{
this.Log(LogLevel.Warning, "Destination MAC not set, the frame has unsupported format.");
return;
}
FrameProcessed?.Invoke(this, sender, frame.Bytes);
if (!started)
{
return;
}
lock (innerLock)
{
var interestingIfaces = macMapping.TryGetValue(frame.DestinationMAC.Value, out var destIface)
? ifaces.Where(x => (x.PromiscuousMode && x.Interface != sender) || x.Interface == destIface)
: ifaces.Where(x => x.Interface != sender);
if (!TimeDomainsManager.Instance.TryGetVirtualTimeStamp(out var vts))
{
// it happens when sending from tap interface
vts = new TimeStamp(default(TimeInterval), EmulationManager.ExternalWorld);
}
foreach (var iface in interestingIfaces)
{
this.Log(LogLevel.Noisy, "Forwarding frame to interface {0}", iface.Interface.MAC);
if (iface.AsTap != null)
{
iface.AsTap.ReceiveFrame(frame.Clone());
continue;
}
iface.Machine.HandleTimeDomainEvent(iface.Interface.ReceiveFrame, frame.Clone(), vts, () =>
{
FrameTransmitted?.Invoke(this, sender, iface.Interface, frame.Bytes);
});
}
}
// at the same we will potentially add current MAC address assigned to the source
if (!frame.SourceMAC.HasValue)
{
this.Log(LogLevel.Warning, "Source MAC not set, cannot update switch cache.");
return;
}
lock (innerLock)
{
macMapping[frame.SourceMAC.Value] = sender;
}
}
private void FrameSentHandler(IRadio sender, byte[] packet)
{
var senderPosition = radios[sender];
var currentEmulation = EmulationManager.Instance.CurrentEmulation;
currentEmulation.TryGetEmulationElementName(sender, out var senderName);
FrameProcessed?.Invoke(this, sender, packet);
if (!mediumFunction.CanTransmit(senderPosition))
{
this.NoisyLog("Packet from {0} can't be transmitted, size {1}.", senderName, packet.Length);
return;
}
foreach (var radioAndPosition in radios.Where(x => x.Key != sender))
{
var receiver = radioAndPosition.Key;
currentEmulation.TryGetEmulationElementName(receiver, out var receiverName);
if (!mediumFunction.CanReach(senderPosition, radioAndPosition.Value) || receiver.Channel != sender.Channel)
{
this.NoisyLog("Packet {0}:chan{1} -> {2}:chan{3} NOT delivered, size {4}.",
senderName, sender.Channel, receiverName, receiver.Channel, packet.Length);
continue;
}
if (!TimeDomainsManager.Instance.TryGetVirtualTimeStamp(out var vts))
{
// e.g. when the sender is a SLIP radio
vts = new TimeStamp(default(TimeInterval), EmulationManager.ExternalWorld);
}
var packetCopy = packet.ToArray();
if (radioHooks.TryGetValue(receiver, out var hook))
{
hook(packetCopy);
}
if (receiver is ISlipRadio)
{
// send immediately
receiver.ReceiveFrame(packetCopy);
continue;
}
receiver.GetMachine().HandleTimeDomainEvent(receiver.ReceiveFrame, packetCopy, vts, () =>
{
this.NoisyLog("Packet {0}:chan{1} -> {2}:chan{3} delivered, size {4}.",
senderName, sender.Channel, receiverName, receiver.Channel, packet.Length);
FrameTransmitted?.Invoke(this, sender, receiver, packetCopy);
});
}
}