void StartListen()
{
// multicast receive setup
remote_end = new IPEndPoint (IPAddress.Any, port);
udp_client = new UdpClient (remote_end);
udp_client.JoinMulticastGroup (group_address);
// async callback for multicast
udp_client.BeginReceive (new AsyncCallback (ReceiveAnnounceCallback), null);
}
public void Start()
{
Open();
_sharedConn?.BeginReceive(OnReceiveData, _sharedConn);
_exclusiveConn?.BeginReceive(OnReceiveData, _exclusiveConn);
}
/// <summary>
/// Handle Receive event for an UADP channel
/// </summary>
/// <param name="result"></param>
private void OnReceive(IAsyncResult result)
{
try
{
// this is what had been passed into BeginReceive as the second parameter:
UdpClient socket = result.AsyncState as UdpClient;
// points towards whoever had sent the message:
IPEndPoint source = new IPEndPoint(0, 0);
// get the actual message and fill out the source:
socket?.EndReceive(result, ref source);
if (IsHostAddress(source.Address.ToString()))
{
//signal that uadp message was received from local ip
m_shutdownEvent.Set();
return;
}
// schedule the next receive operation once reading is done:
socket?.BeginReceive(new AsyncCallback(OnReceive), socket);
}
catch (Exception ex)
{
Assert.Warn(string.Format("OnReceive() failed due to the following reason: {0}", ex.Message));
}
}
private void OnReceive(IAsyncResult result)
{
byte[] receivedData = {};
try {
receivedData = UdpClient.EndReceive(result, ref _endPoint);
} catch (Exception e) {
Logger.Get().Warn(this, $"UDP Receive exception: {e.Message}");
}
// Immediately start listening for new data
// Only do this when the client exists, we might have closed the client
UdpClient?.BeginReceive(OnReceive, null);
// If we did not receive at least an int of bytes, something went wrong
if (receivedData.Length < 4)
{
Logger.Get().Error(this, $"Received incorrect data length: {receivedData.Length}");
return;
}
List <Packet.Packet> packets;
// Lock the leftover data array for synchronous data handling
// This makes sure that from another asynchronous receive callback we don't
// read/write to it in different places
lock (_lock) {
packets = PacketManager.HandleReceivedData(receivedData, ref _leftoverData);
}
_onReceive?.Invoke(packets);
}
public void ReceiveCallback(IAsyncResult ar)
{
var endpoint = new IPEndPoint(MulticastAddress, Port);
try
{
var receiveBytes = Client?.EndReceive(ar, ref endpoint);
PacketReceived?.Invoke(this, receiveBytes);
}
catch (ObjectDisposedException)
{
if (isQuitting)
{
return;
}
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
Console.WriteLine($"Endpoint: {endpoint}");
Client?.BeginReceive(ReceiveCallback, null);
}
static AbletonConnector()
{
try {
connection = new UdpClient(1548);
} catch {}
connection?.BeginReceive(new AsyncCallback(Receive), connection);
}
public void Start()
{
_disposing = false;
Open();
_sharedConn?.BeginReceive(OnReceiveData, _sharedConn);
_exclusiveConn?.BeginReceive(OnReceiveData, _exclusiveConn);
}
public Backend(string ipAddress, int port)
{
// endpoint = new IPEndPoint(IPAddress.Parse(ipAddress), port);
// this.EnableTimedTriggers();
endpoint = new IPEndPoint(IPAddress.Parse(ipAddress), port);
client = new UdpClient();
client.Connect(endpoint);
client.BeginReceive(new AsyncCallback(OnMessageRecieved), null);
}
public DiscoveryManager()
{
ActivityServices = new List<ServiceInfo>();
DiscoveryType = DiscoveryType.WsDiscovery;
#if ANDROID
_messageId = Guid.NewGuid().ToString();
_udpClient = new UdpClient(WsDiscoveryPort);
_udpClient.JoinMulticastGroup(IPAddress.Parse(WsDiscoveryIPAddress));
_udpClient.BeginReceive(HandleRequest, _udpClient);
#endif
}
static void Main(string[] args)
{
int receiverPort = 2000;
UdpClient receiver = new UdpClient(receiverPort);
Console.WriteLine("port: " + receiverPort);
receiver.BeginReceive(alinandata, receiver);
Console.ReadKey();
}
public void Init(string nothing)
{
remoteEndPoint = new IPEndPoint(IPAddress.Parse(remoteAddress), remotePort);
timestamps = new Dictionary<string, Timestamp>();
receivedMsgBuffer = new StringBuilder();
completeMsgBuffer = new List<string>();
try
{
TCPBuffer = new byte[1024];
sendingUDPClient = new UdpClient();
sendingUDPClient.ExclusiveAddressUse = false;
sendingUDPClient.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
sendingUDPClient.Connect(remoteAddress, remotePort);
receivingUDPClient = new UdpClient();
receivingUDPClient.ExclusiveAddressUse = false;
receivingUDPClient.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
receivingUDPClient.Client.Bind((IPEndPoint)sendingUDPClient.Client.LocalEndPoint);
receivingUDPClient.Connect(remoteAddress, remotePort);
receivingUDPClient.BeginReceive(new AsyncCallback(OnMessageUDP), null);
// Send initial message to register the address and port at the server
string hello = "Hello Server";
byte[] bytes = Encoding.UTF8.GetBytes(hello);
try
{
sendingUDPClient.Send(bytes, bytes.Length);
}
catch (Exception err)
{
#if !UNITY_EDITOR
Application.ExternalCall(onErrorCallback, "An error occurred while sending the initial message to the server: " + err.Message);
#else
UnityEngine.Debug.LogError("An error occurred while sending the initial message to the server: " + err.Message);
#endif
}
TCPClient = new TcpClient();
TCPClient.NoDelay = true;
TCPClient.Connect(remoteEndPoint);
TCPClient.GetStream().BeginRead(TCPBuffer, 0, 1024, new AsyncCallback(OnMessageTCP), null);
}
catch (Exception err)
{
#if !UNITY_EDITOR
Application.ExternalCall(onErrorCallback, err.ToString());
#else
UnityEngine.Debug.LogError("Init(): " + err.ToString());
#endif
}
}
void RecieveCandidates()
{
IPEndPoint remote_end = new IPEndPoint (IPAddress.Any, startup_port);
UdpClient udp_client = new UdpClient (remote_end);
udp_client.JoinMulticastGroup (group_address);
UdpState s = new UdpState();
s.e = remote_end;
s.u = udp_client;
// async callback for multicast
udp_client.BeginReceive (new AsyncCallback (ServerLookup), s);
}
public static void ReceiveMessages()
{
// Receive a message and write it to the console.
e = new IPEndPoint(IPAddress.Any, 19000);
u = new UdpClient(e);
Console.WriteLine("listening for messages");
u.BeginReceive(new AsyncCallback(ReceiveCallback), null);
// Do some work while we wait for a message. For this example,
// we'll just sleep
while (true)
{
Thread.Sleep(100);
}
}
static int Main (string [] args)
{
int port = 8001;
UdpClient udpClient = new UdpClient (port);
IPAddress ip = IPAddress.Parse ("224.0.0.2");
udpClient.JoinMulticastGroup (ip, IPAddress.Any);
udpClient.MulticastLoopback = true;
udpClient.Ttl = 1;
udpClient.BeginReceive (ReceiveNotification, udpClient);
udpClient.Send (new byte [1] { 255 }, 1, new IPEndPoint (ip, port));
System.Threading.Thread.Sleep (1000);
udpClient.DropMulticastGroup (ip);
if (!_receivedNotification)
return 1;
return 0;
}
public void udpRestart()
{
if (_udpClient != null)
{
_udpClient.Close();
}
_stringsToParse = new List<byte[]>();
_anyIP = new IPEndPoint(IPAddress.Any, TrackerProperties.Instance.listenPort);
_udpClient = new UdpClient(_anyIP);
_udpClient.BeginReceive(new AsyncCallback(this.ReceiveCallback), null);
Debug.Log("[UDPListener] Receiving in port: " + TrackerProperties.Instance.listenPort);
}
void Start()
{
foreach (PositionUpdateBehavior pub in GameObject.FindObjectsOfType<PositionUpdateBehavior>())
{
updateBehaviors.Add(pub);
}
client = new UdpClient(port);
try
{
client.BeginReceive(new AsyncCallback(AcceptCallback), null);
}
catch (Exception e)
{
Console.WriteLine(e.StackTrace);
}
}
private void UdpReceivedCallback(IAsyncResult result)
{
IPEndPoint endpoint = new IPEndPoint(0, 0);
ITFtpCommand command = null;
try
{
byte[] data;
lock (this)
{
if (m_client == null)
{
return;
}
data = m_client.EndReceive(result, ref endpoint);
}
command = m_parser.Parse(data);
}
catch (SocketException e)
{
// Handle receive error
RaiseOnError(new NetworkError(e));
}
catch (TFtpParserException e2)
{
// Handle parser error
RaiseOnError(new NetworkError(e2));
}
if (command != null)
{
RaiseOnCommand(command, endpoint);
}
lock (this)
{
m_client?.BeginReceive(UdpReceivedCallback, null);
}
}
void ReceiveCallback(IAsyncResult ar)
{
try
{
UdpClient u = ((UdpState)ar.AsyncState).udpClient;
IPEndPoint e = ((UdpState)ar.AsyncState).ipEndPoint;
IAsyncResult r = ((UdpState)ar.AsyncState).result;
byte[] receiveBytes = u?.EndReceive(ar, ref e);
if (receiveBytes?.Length > 1)
{
RaiseDataReceived(DeCompress(receiveBytes));
}
r = u?.BeginReceive(new AsyncCallback(ReceiveCallback), state);
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine($"ReceiveCallback: {e.Message}");
}
}
static void Receive(IAsyncResult result)
{
lock (locker) {
if (connection == null || result == null)
{
return;
}
IPEndPoint source = null;
byte[] message = connection?.EndReceive(result, ref source);
connection?.BeginReceive(new AsyncCallback(Receive), connection);
if (source.Address.Equals(localhost))
{
if (!portMap.ContainsKey(source))
{
if (message[0] >= 242 && message[0] <= 244)
{
connection?.SendAsync(new byte[] { 244, Convert.ToByte((portMap[source] = MIDI.ConnectAbleton(244 - message[0])).Name.Substring(18)) }, 2, source);
}
}
else if (message[0] < 128)
{
NoteOnMessage msg = new NoteOnMessage(Channel.Channel1, (Key)message[0], message[1]);
portMap[source].NoteOn(null, in msg);
}
else if (message[0] == 245)
{
MIDI.Disconnect(portMap[source]);
portMap.Remove(source);
}
else if (message[0] == 246 && Program.Project != null)
{
Program.Project.BPM = BitConverter.ToUInt16(message, 1);
}
}
}
}
private void OnReceiveCallBack(IAsyncResult ar)
{
UdpClient u = (UdpClient)ar.AsyncState;
IPEndPoint e = new IPEndPoint(IPAddress.Any, 0);
try
{
byte[] receiveBytes = u.EndReceive(ar, ref e);
string receiveString = Encoding.ASCII.GetString(receiveBytes);
Regex exp = new Regex("BT-SEARCH \\* HTTP/1.1\\r\\nHost: 239.192.152.143:6771\\r\\nPort: (?<port>[^@]+)\\r\\nInfohash: (?<hash>[^@]+)\\r\\n\\r\\n\\r\\n");
Match match = exp.Match(receiveString);
if (!match.Success)
{
return;
}
int portcheck = Convert.ToInt32(match.Groups["port"].Value);
if (portcheck < 0 || portcheck > 65535)
{
return;
}
TorrentManager manager = null;
InfoHash matchHash = InfoHash.FromHex(match.Groups["hash"].Value);
for (int i = 0; manager == null && i < engine.Torrents.Count; i++)
{
if (engine.Torrents [i].InfoHash == matchHash)
{
manager = engine.Torrents [i];
}
}
if (manager == null)
{
return;
}
Uri uri = new Uri("tcp://" + e.Address.ToString() + ':' + match.Groups["port"].Value);
Peer peer = new Peer("", uri, EncryptionTypes.All);
// Add new peer to matched Torrent
if (!manager.HasMetadata || !manager.Torrent.IsPrivate)
{
ClientEngine.MainLoop.Queue(delegate {
int count = manager.AddPeersCore(peer);
manager.RaisePeersFound(new LocalPeersAdded(manager, count, 1));
});
}
}
catch
{
// Failed to receive data, ignore
}
finally
{
try
{
u.BeginReceive(OnReceiveCallBack, ar.AsyncState);
}
catch
{
// It's closed
}
}
}
void DiscoveryCallback(IAsyncResult ar)
{
UdpClient udpClient = (UdpClient)((ShepherdUdpState)(ar.AsyncState)).Client;
IPEndPoint ip = (IPEndPoint)((ShepherdUdpState)(ar.AsyncState)).Ip;
XMLStream inputXMLStream = new XMLStream();
XElement xmlDescription;
string herdAgentXMLDescription;
try
{
Byte[] receiveBytes = udpClient.EndReceive(ar, ref ip);
{
herdAgentXMLDescription = Encoding.ASCII.GetString(receiveBytes);
if (herdAgentXMLDescription.IndexOf('<') == 0)
{
xmlDescription = XElement.Parse(herdAgentXMLDescription);
HerdAgentInfo herdAgentInfo = new HerdAgentInfo();
herdAgentInfo.Parse(xmlDescription);
//we copy the ip address into the properties
herdAgentInfo.ipAddress = ip;
//we update the ack time
DateTime now = DateTime.Now;
herdAgentInfo.lastACK = now;
bool agentAddedToList = false;
lock (m_listLock)
{
if (!m_herdAgentList.ContainsKey(herdAgentInfo.ProcessorId))
{
m_herdAgentList[herdAgentInfo.IpAddressString] = herdAgentInfo; //We have to use the ip address until ProcessorId is a GUID on all deployed agents
agentAddedToList = true;
}
}
if (agentAddedToList)
{
//check how much time ago the agent list was updated
double lastUpdateElapsedTime = (now - m_lastHerdAgentListUpdate).TotalSeconds;
//notify, if we have to, that the agent list has probably changed
if (lastUpdateElapsedTime > m_herdAgentListUpdateTime)
{
m_lastHerdAgentListUpdate = now;
}
m_notifyAgentListChanged?.Invoke(herdAgentInfo);
}
}
}
udpClient.BeginReceive(new AsyncCallback(DiscoveryCallback), ar.AsyncState);
}
catch (TaskCanceledException ex)
{
LogMessage("Task canceled exception in Shepherd");
LogMessage(ex.ToString());
}
catch (Exception ex)
{
LogMessage("Exception in discovery callback function");
LogMessage(ex.StackTrace);
}
}
// Wiresharkの表示を参考にした
public static XmlDocument Query(IPEndPoint ip, int millisecs)
{
using (UdpClient client = new UdpClient(ip.AddressFamily)) {
client.Connect(ip);
Random rand = new Random();
ushort seed = (ushort)rand.Next();
{
MemoryStream os = new MemoryStream();
BEW wr = new BEW(os);
wr.Write(seed);
wr.Write((ushort)0); //Flags: 0x0000 (Name query)
wr.Write((ushort)1); //Questions: 1
wr.Write((ushort)0); //Answer RRs: 0
wr.Write((ushort)0); //Authority RRs: 0
wr.Write((ushort)0); //Additional RRs: 0
wr.Write((byte)32);
wr.Write(Encoding.ASCII.GetBytes("CKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"));
wr.Write((byte)0);
wr.Write((ushort)0x21); //Type: NBSTAT
wr.Write((ushort)0x01); //Class: IN
byte[] bin = os.ToArray();
if (client.Send(bin, bin.Length) != bin.Length)
{
throw new EndOfStreamException();
}
}
{
XmlDocument xmlo = new XmlDocument();
XmlElement elroot = xmlo.CreateElement("wins");
xmlo.AppendChild(elroot);
XmlElement elres = xmlo.CreateElement("response");
elroot.AppendChild(elres);
byte[] bin;
{
IPEndPoint ipr = new IPEndPoint(0, 0);
IAsyncResult ar = client.BeginReceive(CbReceived, null);
if (false == ar.AsyncWaitHandle.WaitOne(millisecs, false))
{
client.Close();
}
bin = client.EndReceive(ar, ref ipr);
}
MemoryStream si = new MemoryStream(bin, false);
BER br = new BER(si);
ushort rseed = br.ReadUInt16();
if (rseed != seed)
{
throw new InvalidDataException();
}
ushort fl = br.ReadUInt16();
if (0 == (fl & 0x8000) || 0 != (fl & 15))
{
throw new InvalidDataException();
}
{
int cnt = br.ReadUInt16();
for (int x = 0; x < cnt;)
{
throw new NotSupportedException();
}
}
int[] acnt = new int[3];
acnt[0] = br.ReadUInt16();
acnt[1] = br.ReadUInt16();
acnt[2] = br.ReadUInt16();
for (int t = 0; t < 3; t++)
{
XmlElement elrrs = null;
if (t == 0)
{
elrrs = xmlo.CreateElement("answer-rrs");
}
if (t == 1)
{
elrrs = xmlo.CreateElement("authority-rrs");
}
if (t == 2)
{
elrrs = xmlo.CreateElement("additional-rrs");
}
elres.AppendChild(elrrs);
for (int x = 0; x < acnt[t]; x++)
{
XmlElement ela = xmlo.CreateElement("answer");
elrrs.AppendChild(ela);
byte cb = br.ReadByte();
byte[] name = br.ReadBytes(cb);
ela.SetAttribute("raw-name", Encoding.ASCII.GetString(name));
byte nodeType = br.ReadByte();
ela.SetAttribute("node-type", nodeType.ToString("x2"));
int atype = br.ReadUInt16();
if (atype != 0x21)
{
throw new NotSupportedException();
}
int aclass = br.ReadUInt16();
if (aclass != 1)
{
throw new NotSupportedException();
}
uint attl = br.ReadUInt32();
ela.SetAttribute("ttl", attl.ToString());
br.ReadUInt16();
byte aNamecnt = br.ReadByte();
for (int a = 0; a < aNamecnt; a++)
{
String aname = Encoding.Default.GetString(br.ReadBytes(15));
byte anty = br.ReadByte();
int afl = br.ReadUInt16();
XmlElement elan = xmlo.CreateElement("name");
ela.AppendChild(elan);
elan.SetAttribute("name", aname);
elan.SetAttribute("name-type", anty.ToString("x2"));
elan.SetAttribute("flags", afl.ToString("x4"));
}
byte[] mac = br.ReadBytes(6);
ela.SetAttribute("unit-id", String.Format("{0:x2}:{1:x2}:{2:x2}:{3:x3}:{4:x2}:{5:x2}"
, mac[0]
, mac[1]
, mac[2]
, mac[3]
, mac[4]
, mac[5]
));
}
}
return(xmlo);
}
}
}
/********************/
/****** CLIENT ******/
/********************/
public void ListenServer()
{
// open a listening port on a random port
// to receive a response back from server
// using 0 doesn't seem to work reliably
// so we'll just do it ourselves
int myPort = UnityEngine.Random.Range(15001,16000);
IPEndPoint ep1 = new IPEndPoint(IPAddress.Any, myPort);
UdpClient uc1 = new UdpClient(ep1);
UdpState us1 = new UdpState();
us1.e = ep1;
us1.u = uc1;
uc1.BeginReceive(new AsyncCallback(ListenServerCallback), us1);
broadcastClient = uc1;
broadcastEndPoint = ep1;
Debug.Log("Broadcast listener opened on port " + broadcastEndPoint.Port.ToString());
}
public void Start()
{
connection.BeginReceive(ReceiveDatagram, null);
}
private void receiveData()
{
udpClient.BeginReceive(new AsyncCallback(dataReady), udp_ep);
}
//specific to LAN
private void ListenForClients(int _ListenPort)
{
System.Diagnostics.Debug.Assert(m_BroadcastListeningClientLAN == null);
// open a listening port on known port
// to listen for any clients
IPEndPoint ep1 = new IPEndPoint(IPAddress.Any, _ListenPort);
UdpClient uc1 = new UdpClient(ep1);
UdpClientState ucs1 = new UdpClientState(ep1, uc1);
uc1.BeginReceive(new System.AsyncCallback(ListenForClientsCallback), ucs1);
m_BroadcastListeningClientLAN = ucs1;
Debug.Log("Server listening for clients on port: " + _ListenPort);
}
private static void listenerThreadProc()
{
staticLogMessage(new MessageEvent("Network Clock listener thread is alive", 1, MessageEvent.MessageTypes.Log, MessageEvent.MessageCategories.Networking));
while (true)
{
// Wait for a datagram from the udpClient.
// This makes use of a temporary local reference to udpClient so that we can be sure
// that even if the static udpClient member is changed when we don't hold the static lock
// we will at least run the callback on the correct instance of udpClient.
// (I didn't want to lock the receive callback on staticLockObj, because the callback may
// take arbitrarily long to return, and I don't want to be locked out of other static activities like
// shutting down the listener.
System.Net.IPEndPoint remoteEnd = null;
IAsyncResult result;
byte[] received;
UdpClient udpClientNonstatic;
lock (staticLockObj)
{
udpClientNonstatic = udpClient;
result = udpClient.BeginReceive(null, null);
}
received = udpClientNonstatic.EndReceive(result, ref remoteEnd);
if (received.Length != NetworkClockDatagram.datagramByteLength)
{
staticLogMessage(new MessageEvent("Received wrong sized (" + received.Length + ") datagram. Dropping.", 1, MessageEvent.MessageTypes.Error, MessageEvent.MessageCategories.Networking));
continue;
}
NetworkClockDatagram ndgram = new NetworkClockDatagram(received);
#if DEBUG
staticLogMessage(new MessageEvent("Received network clock datagram " + ndgram.ToString(), 2, MessageEvent.MessageTypes.Debug, MessageEvent.MessageCategories.Networking));
#endif
if (ndgram.DatagramCount != lastNGramID + 1)
{
staticLogMessage(new MessageEvent("Warning! Received network clock datagram #" + ndgram.DatagramCount + ", expected #" + (lastNGramID + 1) + ".", 0, MessageEvent.MessageTypes.Warning, MessageEvent.MessageCategories.Networking));
}
lastNGramID = ndgram.DatagramCount;
NetworkClockProvider pr = null;
// Pull designated provider out of provider's dictionary (locked on staticLockObj since
// we are accessing static providers dictionary)
// Will leave pr as null if no such ClockID listener exists.
// Will throw an exception if clockID does exist, but listener is null.
lock (staticLockObj)
{
if (providers.ContainsKey(ndgram.ClockID))
{
pr = providers[ndgram.ClockID];
if (pr == null)
{
throw new SoftwareClockProviderException("Unexpected null network clock provider.");
}
}
}
// If provider does exist, (is not null), relay to it the latest
// clock message
if (pr != null)
{
// Thread lock on pr object
lock (pr.instanceLockObj)
{
if (pr.isRunning)
{
if (!pr.receivedFirstClock)
{
staticLogMessage(new MessageEvent("Received first clock datagram for clockID " + Shared.clockIDToString(pr.clockID),
0, MessageEvent.MessageTypes.Routine, MessageEvent.MessageCategories.SoftwareClock));
pr.receivedFirstClock = true;
}
pr.reachTime(ndgram.ElaspedTime);
}
}
}
}
}
// Actually builds, sends, sets the received bytes and returns the whole packet
private EDNSPacket SendUdpNetworkPacket(string sDNSIP, string sIPToResolve, int nPort, byte bType, bool bEDNS, byte[] bMachine_ID)
{
// Create empty EDNS packet
EDNSPacket Packet = new EDNSPacket();
try
{
IPEndPoint Endpoint = new IPEndPoint(IPAddress.Parse(sDNSIP), nPort);
// Send the current machine_id host
if (bEDNS)
Packet.CreateEDNSPacketMachineID(sIPToResolve, bType, bMachine_ID);
else
Packet.CreateDNSPacket(sIPToResolve, bType);
if (Packet.GetPacketLen() > 0)
{
// Create a udp client to send the packet
UdpClient udpGo = new UdpClient();
udpGo.Client.SendTimeout = 2000;
udpGo.Client.ReceiveTimeout = 2000;
udpGo.Send(Packet.GetPacket(), Packet.GetPacket().Length, Endpoint);
//IPEndPoint object will allow us to read datagrams sent from any source.
IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
// Launch Asynchronous
IAsyncResult iarResult = udpGo.BeginReceive(null, null);
// Wait until complete
bool bKill = false;
DateTime dtTimeStart = DateTime.Now;
while (iarResult.IsCompleted == false)
{
// Sleep instead of cycling
System.Threading.Thread.Sleep(100);
// Watchdog, if doesn't return in 5 seconds get out
if (dtTimeStart.AddSeconds(5) < DateTime.Now)
{
bKill = true;
break;
}
}
// This can hang when not happy about a broken connection
if (bKill)
udpGo.Close();
else
Packet.SetReceivePacket(udpGo.EndReceive(iarResult, ref RemoteIpEndPoint));
}
}
catch (Exception Ex)
{
// TODO: Log an exception?
}
// Always just return packet
return Packet;
}
public override void Start()
{
udpClient.BeginReceive(EndReceive, null);
running = true;
}
public static IPAddress GetPublicIPAddress(string stunServer)
{
try
{
logger.LogDebug("STUNClient attempting to determine public IP from " + stunServer + ".");
using (UdpClient udpClient = new UdpClient(stunServer, DEFAULT_STUN_PORT))
{
STUNMessage initMessage = new STUNMessage(STUNMessageTypesEnum.BindingRequest);
byte[] stunMessageBytes = initMessage.ToByteBuffer();
udpClient.Send(stunMessageBytes, stunMessageBytes.Length);
IPAddress publicIPAddress = null;
ManualResetEvent gotResponseMRE = new ManualResetEvent(false);
udpClient.BeginReceive((ar) =>
{
try
{
IPEndPoint stunResponseEndPoint = null;
byte[] stunResponseBuffer = udpClient.EndReceive(ar, ref stunResponseEndPoint);
if (stunResponseBuffer != null && stunResponseBuffer.Length > 0)
{
logger.LogDebug("STUNClient Response to initial STUN message received from " + stunResponseEndPoint + ".");
STUNMessage stunResponse = STUNMessage.ParseSTUNMessage(stunResponseBuffer, stunResponseBuffer.Length);
if (stunResponse.Attributes.Count > 0)
{
foreach (STUNAttribute stunAttribute in stunResponse.Attributes)
{
if (stunAttribute.AttributeType == STUNAttributeTypesEnum.MappedAddress)
{
publicIPAddress = ((STUNAddressAttribute)stunAttribute).Address;
logger.LogDebug("STUNClient Public IP=" + publicIPAddress.ToString() + ".");
}
}
}
}
gotResponseMRE.Set();
}
catch (Exception recvExcp)
{
logger.LogWarning("Exception STUNClient Receive. " + recvExcp.Message);
}
}, null);
if (gotResponseMRE.WaitOne(STUN_SERVER_RESPONSE_TIMEOUT * 1000))
{
return(publicIPAddress);
}
else
{
logger.LogWarning("STUNClient server response timedout after " + STUN_SERVER_RESPONSE_TIMEOUT + "s.");
return(null);
}
}
}
catch (Exception excp)
{
logger.LogError("Exception STUNClient GetPublicIPAddress. " + excp.Message);
return(null);
//throw;
}
}
private void ListenForServer(int _ListenPort)
{
System.Diagnostics.Debug.Assert(m_AdvertisingListeningClientLAN == null);
// open a listening port on a random port
// to receive a response back from server
// using 0 doesn't seem to work reliably
// so we'll just do it ourselves
IPEndPoint ep1 = new IPEndPoint(IPAddress.Any, _ListenPort);
UdpClient uc1 = new UdpClient(ep1);
UdpClientState ucs1 = new UdpClientState(ep1, uc1);
uc1.BeginReceive(new System.AsyncCallback(ListenForServerCallback), ucs1);
m_AdvertisingListeningClientLAN = ucs1;
Debug.Log("Finder advertising listener opened on port " + _ListenPort);
}
/// <summary>
/// Begins the UDP MITM. RemotePort must be set before calling this
/// </summary>
/// <returns></returns>
public async Task StartAsync()
{
// Client to send data to the server
UdpClient sender = new UdpClient();
// Endpoint representing the local port
var endpoint = new IPEndPoint(IPAddress.Any, LocalPort);
try
{
// Local function called when data is received
void requestCallback(IAsyncResult ar)
{
try
{
// Complete the receive and get the bytes
var bytes = m_listener.EndReceive(ar, ref endpoint);
// Send the bytes to the server
if (RemotePort != 0)
{
InstanceAdded = true;
Application.Current.Dispatcher.Invoke(() =>
{
ProxyUiWindow.SendBytesToUi(m_connectionInstance, new CommPacket
{
Data = bytes,
Direction = CommPacketDirection.ClientToServer,
Id = Guid.NewGuid(),
Instance = m_connectionInstance,
ParentPacket = null,
Header = "UDP data",
});
});
if (sender.Send(bytes, bytes.Length, RemoteHost, RemotePort) != bytes.Length)
{
throw new Exception("UDP send failed");
}
}
// Listen for more bytes
m_listener.BeginReceive(requestCallback, null);
}
catch (Exception ex)
{
// Terminate the port on failure
m_failureSource.TrySetException(ex);
}
}
// Perform the first listen
m_listener.BeginReceive(requestCallback, null);
}
catch (Exception ex)
{
// Terminate the port on failure
m_failureSource.TrySetException(ex);
}
try
{
// Wait until failure or termination
await m_failureSource.Task;
}
catch { }
}
void StartGameClient()
{
// multicast receive setup
IPEndPoint remote_end = new IPEndPoint (IPAddress.Any, startup_port);
udp_client = new UdpClient (remote_end);
udp_client.JoinMulticastGroup (group_address);
// async callback for multicast
udp_client.BeginReceive (new AsyncCallback (ServerLookup), null);
StartCoroutine(MakeConnection ());
}
// async callback for reading packets sent using udp
private void RecievingDatagramCallback(IAsyncResult asyncResult)
{
//queue the async results
// if so, start listen for new data
if (_recievingUdpDatagrams)
{
_UdpListener.BeginReceive(new AsyncCallback(RecievingDatagramCallback),
_UdpListener);
}
// retriving the client
UdpClient client = (UdpClient)asyncResult.AsyncState;
// creating the endPoint
IPEndPoint endPoint = new IPEndPoint(IPAddress.Any, _playerUdpListenPort);
// save the data
byte[] recievedData = client.EndReceive(asyncResult, ref endPoint);
//decoding the byte to a string
string recievedJsonString = Encoding.ASCII.GetString(recievedData);
//save the data as a packet
Packet recievedUdpPacket = JsonConvert.DeserializeObject <Packet>(recievedJsonString);
// treat the reaceved data
// if is a packet for player position
if (recievedUdpPacket.PacketType == PacketType.PlayerPosition)
{
// if is a packet of movement
// check if the packet is to this player
// on udp connection player can only recieve packets for the mov of the other player
// this check for all the players connected because the udp packet can reatch the client before the tcp one
if (recievedUdpPacket.PlayerGUID == _opponentPlayer.Id &&
_spawnedPlayers.ContainsKey(_opponentPlayer.Id))
{
// check if this is the newer packet
if (recievedUdpPacket.GetSendStamp > _player.LastPacketStamp)
{
// add to queue
_asyncActions.Enqueue(() =>
{
// if soo, add this packet to list
_player.PlayerPackets.Add(recievedUdpPacket);
// add the stamp
_player.LastPacketStamp = recievedUdpPacket.GetSendStamp;
// call method to player the player at the recieved pos
// set transform recieves xand y , and rotation y
_spawnedPlayers[_opponentPlayer.Id].
SetTransform(recievedUdpPacket.PlayerPosition.X,
recievedUdpPacket.PlayerPosition.Y,
recievedUdpPacket.ObjRotation.Y);
});
}
}
}
// if is a packet for obj Update
else if (recievedUdpPacket.PacketType == PacketType.SetObjPosition)
{
// check if the obj is spawned
if (_inGameCutlery != null)
{
// confirm if is the latest packet recieved
if (recievedUdpPacket.GetSendStamp > _player.LastPacketStamp)
{
// add to async queue
_asyncActions.Enqueue(() =>
{
// add this packet to the player packets
_player.PlayerPackets.Add(recievedUdpPacket);
// update the last packet stamp
_player.LastPacketStamp = recievedUdpPacket.GetSendStamp;
// update the transform of the obj
_inGameCutlery.transform.position =
new Vector3(recievedUdpPacket.ObjPosition.X,
recievedUdpPacket.ObjPosition.Y, 0f);
// update the position
_inGameCutlery.transform.rotation =
Quaternion.Euler(0f, 0f, recievedUdpPacket.ObjRotation.Y);
});
}
}
}
}
/// <summary>
/// This method begins the process of listening to all messages sent on the router.
/// </summary>
public void StartReceivingIP()
{
SetInstruction (searchInstructions);
try {
if (receiver == null) {
receiver = new UdpClient (NaviMobileManager.RemotePort);
receiver.BeginReceive (new AsyncCallback (ReceiveData), null);
}
} catch (SocketException e) {
Debug.Log (e.Message);
}
}
public static bool IsPortOpen(string host, int port, int timeout = 20000, int retry = 1, bool isUdp = false)
{
var retryCount = 0;
while (retryCount < retry)
{
// Logical delay without blocking the current thread.
if (retryCount > 0)
{
Task.Delay(timeout).Wait();
}
if (isUdp)
{
// UDP is connectionless by design, therefore method below is not 100 % reliable.
// Firewall and network setups might influence the result.
var udp = new UdpClient();
try
{
var result = udp.BeginSend(new byte[1], 1, host, port, null, null);
var success = result.AsyncWaitHandle.WaitOne(timeout);
if (success)
{
udp.BeginReceive(null, null);
udp.EndSend(result);
var result2 = udp.BeginReceive(null, null);
var success2 = result.AsyncWaitHandle.WaitOne(timeout);
if (success2)
{
IPEndPoint remoteEP = null;
udp.EndReceive(result2, ref remoteEP);
return(true);
}
}
}
catch (SocketException udpEx)
{
// If port was forcibly closed (WSAECONNRESET) then...
if (udpEx.ErrorCode == 10054)
{
return(false);
}
}
finally
{
udp.Close();
retryCount++;
}
// Answer or timeout means that port is open.
return(true);
}
else
{
var tcp = new TcpClient();
try
{
var result = tcp.BeginConnect(host, port, null, null);
var success = result.AsyncWaitHandle.WaitOne(timeout);
if (success)
{
tcp.EndConnect(result);
return(true);
}
}
catch { }
finally
{
tcp.Close();
retryCount++;
}
}
}
return(false);
}
/// <summary>
/// 构建KCP客户端
/// </summary>
/// <param name="conv">会话id</param>
/// <param name="port">本地端口</param>
public KClient(UInt32 conv, int port) : base()
{
this.conv = conv;
client = new UdpClient(new IPEndPoint(IPAddress.Any, port));
client.BeginReceive(OnRecive, null);
}
public XyzUdpClient(IPAddress address, int port)
{
client = new UdpClient();
this.Bind(address, port);
client.BeginReceive(DataReceived, client);
}
private void ReceiveMessages()
{
receiveUdpClient = new UdpClient(clientObj.ClientPort);
receiveUdpClient.BeginReceive(new AsyncCallback(asyncCallbackReply), null);
}
/// <summary>
/// Start slave listening for requests.
/// </summary>
public override void Listen()
{
_log.Debug("Start Modbus Udp Server.");
_client.BeginReceive(ReceiveRequestCompleted, this);
}
/// <summary>
/// Asynchronously listens on the given client for a single packet.
/// </summary>
public static void Receive(UdpClient Client, ReceiveRawPacketHandler OnReceive)
{
// Good job Microsoft, for making this so easy O_O
while (true)
{
try
{
Client.BeginReceive(delegate(IAsyncResult ar)
{
lock (Client)
{
IPEndPoint end = new IPEndPoint(IPAddress.Any, 0);
byte[] data;
try
{
data = Client.EndReceive(ar, ref end);
OnReceive(end, data);
}
catch (SocketException se)
{
if (se.SocketErrorCode == SocketError.Shutdown)
{
return;
}
if (_CanIgnore(se))
{
Receive(Client, OnReceive);
}
else
{
throw se;
}
}
catch (ObjectDisposedException)
{
return;
}
}
}, null);
return;
}
catch (SocketException se)
{
if (!_CanIgnore(se))
{
throw se;
}
}
catch (ObjectDisposedException)
{
return;
}
}
}
/********************/
/****** SERVER ******/
/********************/
public void ListenForClients(string g)
{
// open a listening port on known port 15000
// to listen for any clients
IPEndPoint ep1 = new IPEndPoint(IPAddress.Any, 15000);
UdpClient uc1 = new UdpClient(ep1);
UdpState us1 = new UdpState();
us1.e = ep1;
us1.u = uc1;
uc1.BeginReceive(new AsyncCallback(ListenForClientsCallback), us1);
multiGameName = g;
waitingResponse = true;
Debug.Log("Server listening port opened");
}
/// <summary>
/// 启动服务
/// </summary>
/// <param name="endpoint"></param>
/// <returns></returns>
public async Task Start(IPEndPoint endpoint)
{
await Task.Yield();
TaskCompletionSource <object> tcs = new TaskCompletionSource <object>();
if (_run)
{
try
{
_udp = new UdpClient(endpoint);
//判断如果关闭不重试
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
_udp.Client.IOControl(SIO_UDP_CONNRESET, new byte[4], new byte[4]);
}
}
catch (SocketException e)
{
OnError(e);
return;
}
}
AsyncCallback receiveCallback = null;
receiveCallback = result =>
{
byte[] data;
try
{
IPEndPoint remote = new IPEndPoint(0, 0);
data = _udp.EndReceive(result, ref remote);
HandleRequest(data, remote);
}
catch (ObjectDisposedException)
{
_run = false;
}
catch (SocketException e)
{
OnError(e);
}
if (_run)
{
_udp.BeginReceive(receiveCallback, null);
}
else
{
tcs.SetResult(null);
}
};
_udp.BeginReceive(receiveCallback, null);
OnEvent(OnListening, EventArgs.Empty);
await tcs.Task;
}
static void Receive(IAsyncResult result)
{
lock (locker) {
if (connection == null || result == null)
{
return;
}
IPEndPoint source = null;
byte[] message = connection?.EndReceive(result, ref source);
connection?.BeginReceive(new AsyncCallback(Receive), connection);
if (!source.Address.Equals(localhost))
{
return;
}
if (!portMap.ContainsKey(source))
{
if (message[0] == 247)
{
App.Args = new string[] { Encoding.UTF8.GetString(message.Skip(1).ToArray()) };
if (handlingFileOpen)
{
return;
}
handlingFileOpen = true;
Dispatcher.UIThread.InvokeAsync(async() => {
if (Program.Project == null)
{
App.Windows.OfType <SplashWindow>().First().ReadFile(App.Args[0]);
}
else
{
await Program.Project.AskClose();
}
App.Args = null;
handlingFileOpen = false;
});
}
else if (message[0] >= 242 && message[0] <= 244)
{
connection?.SendAsync(new byte[] { 244, Convert.ToByte((portMap[source] = MIDI.ConnectAbleton(244 - message[0])).Name.Substring(18)) }, 2, source);
}
}
else if (message[0] < 128)
{
portMap[source].HandleNote(message[0], message[1]);
}
else if (message[0] == 245)
{
MIDI.Disconnect(portMap[source]);
portMap.Remove(source);
}
else if (message[0] == 246 && Program.Project != null)
{
Program.Project.BPM = BitConverter.ToUInt16(message, 1);
}
}
}
private void ProcessDgram(IAsyncResult res)
{
try
{
byte[] recieved = _client.EndReceive(res, ref _hostEndPoint);
if (DebugEnabled)
{
Debug.Log("[SocketManager] recieved: " + Encoding.UTF8.GetString(recieved));
}
string packet = Encoding.UTF8.GetString(recieved);
string packetType = packet.Substring(0, 4);
string packetData = packet.Remove(0, 4);
switch (packetType)
{
case "EVNT":
lock (_socketEventQueue) {
ISocketEvent socketEvent = new StringUnitySocketEvent(onEventReceived, packetData);
_socketEventQueue.Enqueue(socketEvent);
}
break;
case "UDAT":
lock (_socketEventQueue) {
SessionDataUpdateEventInfo info = JsonUtility.FromJson <SessionDataUpdateEventInfo>(packetData);
ISocketEvent socketEvent = new SessionDataUpdateUnitySocketEvent(onSessionDataUpdateReceived, info);
_socketEventQueue.Enqueue(socketEvent);
}
break;
case "GDAT":
lock (_socketEventQueue) {
ISocketEvent socketEvent = new StringUnitySocketEvent(onSessionDataGetReceived, packetData);
_socketEventQueue.Enqueue(socketEvent);
}
break;
case "JRES":
lock (_socketEventQueue) {
ISocketEvent socketEvent = new ActionSocketEvent(OnConnected);
_socketEventQueue.Enqueue(socketEvent);
}
break;
case "QUIT":
lock (_socketEventQueue) {
ISocketEvent socketEvent = new ActionSocketEvent(OnDisconnected);
_socketEventQueue.Enqueue(socketEvent);
}
break;
default:
Debug.Log("[SocketManager] Recieved Unknown Message: /n" + packet);
break;
}
_client.BeginReceive(new AsyncCallback(ProcessDgram), _client);
}
catch (Exception ex)
{
lock (_socketEventQueue) {
ISocketEvent socketEvent = new ExceptionUnitySocketEvent(onSocketException, ex);
_socketEventQueue.Enqueue(socketEvent);
}
}
}
private void Listen()
{
_ar = _udpClient.BeginReceive(OnReceive, new object());
}
public void startRecv()
{
_listener = new UdpClient(Cmd.broadcast_port);
_listener.BeginReceive(new AsyncCallback(recvMsg), null);
}
//通讯连接
public bool Init(string ip, int port, string localIp)
{
try
{
//ping PLC，看硬件是否能连上
var ping = new Ping();
var iep = new IPEndPoint(IPAddress.Parse(ip), port);
var pr = ping.Send(ip, 1000);
if (pr.Status != IPStatus.Success)
{
IsConnected = false;
return(false);
}
if (udpClient == null)
{
udpClient = new UdpClient();
_struIP = new StructIP();
dataSend = new CmdData();
}
ipInfo = new IPEndPoint(IPAddress.Parse(ip), port);
_udpState = new UdpState(udpClient, ipInfo);
_struIP.ipPLC = ip;
_struIP.port = port;
_struIP.ipLocal = localIp;
udpClient.Connect(ipInfo);
var length = ip.Length;
var index = 0;
for (var i = 0; i < length; i++)
{
if ("." == ip.Substring(i, 1))
{
index++;
if (3 == index)
{
var ipLast = ip.Substring(i + 1, length - i - 1);
dataSend.DA1 = Convert.ToByte(ipLast);
break;
}
}
}
length = localIp.Length;
index = 0;
for (var i = 0; i < length; i++)
{
if ("." == localIp.Substring(i, 1))
{
index++;
if (3 == index)
{
var ipLast = localIp.Substring(i + 1, length - i - 1);
dataSend.SA1 = Convert.ToByte(ipLast);
break;
}
}
}
if (isInited == false)
{
udpClient.BeginReceive(EndReceive, _udpState);
Thread.Sleep(500);
_boolTaskStart = true;
_taskCheckConnect = new Task(CheckHeartThrob);
_taskCheckConnect.Start();
}
isInited = true;
return(true);
}
catch
{
return(false);
}
}
void Start()
{
X = new Queue<float> ();
Y = new Queue<float> ();
Z = new Queue<float> ();
client = new UdpClient (port);
ReceiveOperationInfo msgInfo = new ReceiveOperationInfo ();
msgInfo.msgUDPClient = client;
msgInfo.msgIPEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"),port);
client.BeginReceive (new AsyncCallback (ReceiveDataAsync), msgInfo);
}