public override bool SendData(byte[] bytes, int size, Topic t)
{
bool result = true;
if (this.topicSinkMap.ContainsKey(t.GetName()))
{
Entry_T dict = this.topicSinkMap[t.GetName()];
List <string> sinksToDelete = new List <string>();
// Loop over all sinks and send data, remove items that isn't "alive".
foreach (KeyValuePair <string, IpPortPair> kvp in dict.portMap)
{
// Check if this sink is alive
if (kvp.Value.IsAlive())
{
result &= SendData(bytes, size, InetAddress.GetByName(kvp.Value.Ip), kvp.Value.Port);
}
else //Remove it.
{
sinksToDelete.Add(kvp.Key);
}
}
foreach (string key in sinksToDelete)
{
dict.portMap.Remove(key);
}
}
return(result);
}
public bool SendTo(byte[] bytes, int offset, int size, string ip, int port)
{
try
{
return(this.SendTo(bytes, offset, size, InetAddress.GetByName(ip), port));
}
catch (Exception)
{
return(false);
}
}
public bool SendTo(byte[] bytes, int offset, int size, string ip, int port)
{
try
{
return(SendTo(bytes, offset, size, InetAddress.GetByName(ip), port));
} catch (Exception ex)
{
Logger.ExceptionLogger.LogException(ex);
return(false);
}
}
/// Protection is not needed since all calls go through the participant which is synched
public ReceiveDataHandler GetReceiveDataHandler(Topic top, Participant participant)
{
// In the case that we use the same port for several topics, we need to find the receiver for the transport::address::port used
string key = MakeKey(top);
if (ReceiveDataHandlers.ContainsKey(key))
{
ReceiveDataHandler rdh = ReceiveDataHandlers[key];
// Check if any of the topics have a sample size larger than MAX_SEGMENT_SIZE
// This will lead to a problem when using the same port, if samples becomes > MAX_SEGMENT_SIZE
if ((rdh.GetSampleMaxSize() > Globals.MAX_SEGMENT_SIZE) || (top.GetSampleMaxSize() > Globals.MAX_SEGMENT_SIZE))
{
if (top.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
Logger.ExceptionLogger.LogMessage("Warning: UDP transport is used with Topics with 'sampleMaxSize' > " + Globals.MAX_SEGMENT_SIZE);
}
else
{
Logger.ExceptionLogger.LogMessage("Warning: Same port (" + top.GetPort() + ") is used with Topics with 'sampleMaxSize' > " + Globals.MAX_SEGMENT_SIZE);
}
}
return(rdh);
}
// Get the local interface, doing a translation from subnet if necessary
string localIF = InetAddress.DoSubnetTranslation(top.GetLocalInterface());
// Didn't exist, create one if transport is known
if ((top.GetTransport().Equals(Topic.TRANSPORT_MC)) || (top.GetTransport().Equals(Topic.TRANSPORT_TCP)))
{
ReceiveDataHandlers.Add(key,
new ReceiveDataHandler(top, participant, ReceiverFactory.CreateReceiver(top, localIF)));
return(ReceiveDataHandlers[key]);
}
else if (top.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
IReceiver rec = ReceiverFactory.CreateReceiver(top, localIF);
ReceiveDataHandlers.Add(key, new ReceiveDataHandler(top, participant, rec));
if (key.Equals(Topic.TRANSPORT_UDP))
{
participant.SetUdpTransportInfo(((UdpReceiver)rec).IP, ((UdpReceiver)rec).Port);
}
return(ReceiveDataHandlers[key]);
}
return(null);
}
///LA TODO Protection ?? What if several subscribers at the same time
/// Not needed since all calls go through the participant which is synched
public ISendDataHandler GetSendDataHandler(Topic t, Participant participant)
{
// Get the local interface, doing a translation from subnet if necessary
string localIF = InetAddress.DoSubnetTranslation(t.GetLocalInterface());
string key = MakeKey(t, localIF);
if (SendDataHandlers.ContainsKey(key))
{
ISendDataHandler sender = SendDataHandlers[key];
if (t.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
PostSetup(t, participant, (McUdpSendDataHandler)sender);
}
return(sender);
}
try
{
ISendDataHandler sender = null;
if (t.GetTransport().Equals(Topic.TRANSPORT_MC))
{
sender = new McSendDataHandler(t, localIF, t.GetTimeToLive());
}
else if (t.GetTransport().Equals(Topic.TRANSPORT_TCP))
{
sender = new TcpSendDataHandler(t, localIF);
}
else if (t.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
// We have only one sender for all topics on an interface, so use the domain value for buffer size
sender = new McUdpSendDataHandler(participant.getDomain().GetOutSocketBufferSize(), localIF);
PostSetup(t, participant, (McUdpSendDataHandler)sender);
}
if (sender != null)
{
SendDataHandlers.Add(key, sender);
return(sender);
}
throw new CommException("No such Transport " + t.GetTransport());
}
catch (System.IO.IOException ex)
{
throw new CommException("Error creating SendDataHandler. IOException -->" + ex.Message);
}
}
public bool SendTo(byte[] bytes, int offset, int size, InetAddress ipAddress, int port)
{
try
{
IPEndPoint ipep = new IPEndPoint(ipAddress.GetIPAddress(), port);
// "UdpClient" do not include a send method with an offset.
// Hence we must use the underlaying socket "Client" to be able to
// send a byte buffer starting with an offset
multicastSocket.Client.SendTo(bytes, offset, size, SocketFlags.None, (EndPoint)ipep);
return(true);
}
catch (Exception)
{
return(false);
}
}
// Return true if a valid node address
public static bool IsValidNodeAddress(string addr)
{
try
{
InetAddress ad = new InetAddress(addr);
ulong Ip = ad.ToNum();
if (Ip == 0)
{
return(false);
}
if (Ip >= 0xE0000000)
{
return(false); // Skip multicast and above
}
return(true);
} catch {
return(false);
}
}
protected bool SendData(byte[] bytes, int size, InetAddress ip, int port)
{
int nrSegmentsNeeded = (int)(size / Globals.MAX_SEGMENT_SIZE);
if (size % Globals.MAX_SEGMENT_SIZE != 0)
{
nrSegmentsNeeded++;
}
for (int i = 0; i < nrSegmentsNeeded; i++)
{
//If this is the last element, only send the bytes that remains, otherwise send a full package.
int sizeToSend = (i == nrSegmentsNeeded - 1) ? size - (nrSegmentsNeeded - 1) * Globals.MAX_SEGMENT_SIZE : Globals.MAX_SEGMENT_SIZE;
if (!sender.SendTo(bytes, i * Globals.MAX_SEGMENT_SIZE, sizeToSend, ip, port))
{
return(false);
}
}
return(true);
}
public static bool IsMyNodeAddress(String addr)
{
try
{
InetAddress nodeaddr = new InetAddress(addr);
if (nodeaddr.IsAnyLocalAddress())
{
return(true);
}
System.Net.NetworkInformation.NetworkInterface[] nics = System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces();
if (nics != null && nics.Length > 0)
{
foreach (System.Net.NetworkInformation.NetworkInterface adapter in nics)
{
System.Net.NetworkInformation.IPInterfaceProperties properties = adapter.GetIPProperties();
System.Net.NetworkInformation.UnicastIPAddressInformationCollection uniCast = properties.UnicastAddresses;
if (uniCast == null)
{
continue;
}
foreach (System.Net.NetworkInformation.UnicastIPAddressInformation uni in uniCast)
{
if (uni.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) //IPV4
{
if (nodeaddr.Equals(uni.Address))
{
return(true);
}
}
}
}
}
return(false);
}
catch
{
return(false);
}
}
public McSendDataHandler(Topic t, string localInterface)
{
sender = new MulticastSender(0, localInterface, 1, t.GetOutSocketBufferSize()); // Make ttl configurable
sinkIP = InetAddress.GetByName(t.GetDomainAddress());
}
public bool Equals(InetAddress addr)
{
return(this.addr.ToString().Equals(addr.ToString()));
}
public TcpSendDataHandler(Topic t, string localInterface)
{
sender = new TcpServerSender(t.GetDomainAddress(), t.GetPort(), t.GetOutSocketBufferSize());
sinkIP = InetAddress.GetByName(t.GetDomainAddress());
}
public bool SendTo(byte[] bytes, int offset, int size, InetAddress ipAddress, int port)
{
return(tcpSenderList.SendTo(bytes, offset, size, ipAddress, port));
}
public McSendDataHandler(Topic t, string localInterface, int ttl)
{
sender = new MulticastSender(0, localInterface, ttl, t.GetOutSocketBufferSize());
sinkIP = InetAddress.GetByName(t.GetDomainAddress());
}
// Synchronization is unnecessary since the code only calls a synchronized method
public bool SendTo(byte[] bytes, int offset, int size, InetAddress ipAddress, int port)
{
return(this.SendTo(bytes, offset, size, ipAddress.GetHostAddress(), port));
}