| public BeginReceive ( AsyncCallback requestCallback, object state ) : IAsyncResult | ||
| requestCallback | AsyncCallback | |
| state | object | |
| Результат | IAsyncResult | |
private void thread()
{
UdpClient ucl = new UdpClient(6000);
IAsyncResult iar = ucl.BeginReceive(null, null);
while (!exit)
{
if (!iar.AsyncWaitHandle.WaitOne(1000))
continue;
IPEndPoint ep = new IPEndPoint(0, 0);
byte[] data = ucl.EndReceive(iar, ref ep);
iar = ucl.BeginReceive(null, 0);
using (MemoryStream ms = new MemoryStream(data))
{
BinaryReader br = new BinaryReader(ms);
while (ms.Position < ms.Length)
{
CanMessage m = CanMessage.DeserializeFrom(br);
if (MessageReceived != null)
MessageReceived(this, m);
}
}
}
ucl.Close();
}
private void OnReceived(IAsyncResult ar)
{
if (Client != null)
{
IPEndPoint endpoint = new IPEndPoint((EndPoint as IPEndPoint).Address, 0);
byte[] data;
try
{
data = Client.EndReceive(ar, ref endpoint);
}
catch (SocketException)
{
Dispose();
return;
}
catch (ObjectDisposedException)
{
Dispose();
return;
}
LastActivity = DateTime.UtcNow;
Client.BeginReceive(new AsyncCallback(OnReceived), null);
Reader.ReceivedData(data);
}
}
public UDPListener(int port)
{
Port = port;
queue = new Queue<byte[]>();
ClosingEvent = new ManualResetEvent(false);
callbackLock = new object();
// try to open the port 10 times, else fail
for (int i = 0; i < 10; i++)
{
try
{
receivingUdpClient = new UdpClient(port);
break;
}
catch (Exception)
{
// Failed in ten tries, throw the exception and give up
if (i >= 9)
throw;
Thread.Sleep(5);
}
}
RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
// setup first async event
AsyncCallback callBack = new AsyncCallback(ReceiveCallback);
receivingUdpClient.BeginReceive(callBack, null);
}
/// <summary>
/// Start listening on udp port
/// </summary>
public override void Start()
{
Log.Debug("PortUdp.start");
try
{
Log.Debug("Start waiting for a connection...");
_listen = true;
var ip = GetLocalIp();
var ep = new IPEndPoint(ip, _port);
var u = new UdpClient();
u.EnableBroadcast = true;
u.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
u.Client.Bind(ep);
_state = new UdpState();
_state.e = ep;
_state.u = u;
u.BeginReceive(ReceiveCallback, _state);
base.Start();
}
catch (Exception e)
{
Log.Error("PortUdp.Start error", e);
}
}
/// <summary>
/// Connect to specific remote end point and only send and receive from that endpoint.
/// </summary>
/// <param name="endPoint"></param>
public void Connect(IPEndPoint localEndPoint, IPEndPoint remoteEndPoint)
{
this.remoteEndPoint = remoteEndPoint;
udp = new UdpClient(localEndPoint);
receivingPending = true;
udp.BeginReceive(new AsyncCallback(OnPacketReceived), this);
}
//udp通讯类byLeo
#region
public string[] UdpGetInfoByIPPort(string ipAddress, int ipPort, string cmdstr, int idelay)
{
if (basefun.IsCorrenctIP(ipAddress) == false) return null;
if (idelay == 0) idelay = 100;
int timeout = idelay;
byte[] bytOutBuffer = getByteBy16s(cmdstr);
IPEndPoint RemoteIpEndPoint = SetIPEndPoint(ipAddress, ipPort);
if (RemoteIpEndPoint == null) return null;
byte[] bytReceiveBuffer;
using (UdpClient udpClient = new UdpClient())
{
udpClient.Send(bytOutBuffer, bytOutBuffer.Length, RemoteIpEndPoint);
IPEndPoint from = new IPEndPoint(IPAddress.Any, 0);
IAsyncResult result = udpClient.BeginReceive(null, this);
result.AsyncWaitHandle.WaitOne(timeout, false);
if (!result.IsCompleted)
{
//throw SharpTimeoutException.Create(ipAddress, timeout);
udpClient.Close();
return null;
}
bytReceiveBuffer = udpClient.EndReceive(result, ref from);
string udpInfo = get16sByByte(bytReceiveBuffer);
udpInfo = SpecialRestore(udpInfo, "dddb", "db");
udpInfo = SpecialRestore(udpInfo, "dcdb", "c0");
//取返回值16进制数组,并解析
string[] infos = AnalysisEateryResults(udpInfo);
udpClient.Close();
return infos;
}
}
public ServerUDPTunnel(ServerPlayer player)
{
// enstablish an Connection
this.player = player;
udp = new UdpClient(new IPEndPoint(IPAddress.Any, Server.instance.UDPStartPort + (int)player.id));
udp.BeginReceive(onReceive, null);
}
/// <summary>
/// 构造一个新的消息对象，并绑定到指定的端口和IP上。
/// </summary>
/// <param name="ip">绑定的IP</param>
/// <param name="port">绑定的端口</param>
internal UDPThread(IPMClient ipmClient)
{
IsInitialized = false;
try
{
client = new UdpClient(new IPEndPoint(ipmClient.Config.BindedIP, ipmClient.Config.Port));
}
catch (Exception)
{
OnNetworkError(new EventArgs());
return;
}
SendList = new List<PackedNetworkMessage>();
client.EnableBroadcast = true;
_ipmClient = ipmClient;
CheckQueueTimeInterval = 2000;
MaxResendTimes = 5;
new System.Threading.Thread(new System.Threading.ThreadStart(CheckUnConfirmedQueue)) { IsBackground = true }.Start();
IsInitialized = true;
//开始监听
client.BeginReceive(EndReceiveDataAsync, null);
}
public ConnectionManager(int nPortListen)
{
listenPort = nPortListen;
udpReceiver = new UdpClient(listenPort);
udpReceiver.BeginReceive(new AsyncCallback(OnUdpReceived), udpReceiver);
}
public SearchSniffer()
{
IPAddress[] LocalAddresses = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
ArrayList temp = new ArrayList();
foreach (IPAddress i in LocalAddresses) temp.Add(i);
temp.Add(IPAddress.Loopback);
LocalAddresses = (IPAddress[])temp.ToArray(typeof(IPAddress));
for (int id = 0; id < LocalAddresses.Length; ++id)
{
try
{
var localEndPoint = new IPEndPoint(LocalAddresses[id], 1900);
UdpClient ssdpSession = new UdpClient(localEndPoint);
ssdpSession.MulticastLoopback = false;
ssdpSession.EnableBroadcast = true;
if (localEndPoint.AddressFamily == AddressFamily.InterNetwork)
{
ssdpSession.JoinMulticastGroup(UpnpMulticastV4Addr, LocalAddresses[id]);
}
uint IOC_IN = 0x80000000;
uint IOC_VENDOR = 0x18000000;
uint SIO_UDP_CONNRESET = IOC_IN | IOC_VENDOR | 12;
ssdpSession.Client.IOControl((int)SIO_UDP_CONNRESET, new byte[] { Convert.ToByte(false) }, null);
ssdpSession.BeginReceive(new AsyncCallback(OnReceiveSink), new object[] { ssdpSession, localEndPoint });
SSDPSessions[ssdpSession] = ssdpSession;
}
catch (Exception) { }
}
}
private void ReceiveCallBack(IAsyncResult Asr)
{
if (_udpClient == null)
{
return;
}
byte[] dat = null;
try
{
dat = _udpClient.EndReceive(Asr, ref _receivedEp);
}
catch (SocketException ex)
{
return;
}
catch (ObjectDisposedException ex)
{
return;
}
OnBytesReceived?.Invoke(dat);
if (OnBytesReceived == null)
{
// store the data if callback is not set
_mutex.WaitOne();
_receivedPackets.AddLast(dat);
_mutex.ReleaseMutex();
}
// 今一度非同期受信を開始
_udpClient.BeginReceive(ReceiveCallBack, this);
}
//データを受信した時
private void ReceiveCallback(IAsyncResult ar)
{
System.Net.Sockets.UdpClient udp = (System.Net.Sockets.UdpClient)ar.AsyncState;
//非同期受信を終了する
System.Net.IPEndPoint remoteEP = null;
byte[] rcvBytes;
try
{
rcvBytes = udp.EndReceive(ar, ref remoteEP);
}
catch (System.Net.Sockets.SocketException ex)
{
Console.WriteLine("受信エラー({0}/{1})",
ex.Message, ex.ErrorCode);
return;
}
catch (ObjectDisposedException ex)
{
//すでに閉じている時は終了
Console.WriteLine("Socketは閉じられています。");
return;
}
RecieveData(remoteEP.Address, remoteEP.Port, rcvBytes);
//再びデータ受信を開始する
udp.BeginReceive(ReceiveCallback, udp);
}
public Client()
{
IPEndPoint myEndPoint = new IPEndPoint(IPAddress, 8307);
_udpClient = new UdpClient(myEndPoint);
List<object> state = new List<object> { myEndPoint, _udpClient };
_udpClient.BeginReceive(OnUdpDataReceived, state);
}
//データを受信した時
private void ReceiveCallback(IAsyncResult ar)
{
System.Net.Sockets.UdpClient udp =
(System.Net.Sockets.UdpClient)ar.AsyncState;
//非同期受信を終了する
System.Net.IPEndPoint remoteEP = null;
byte[] rcvBytes;
try
{
rcvBytes = udp.EndReceive(ar, ref remoteEP);
}
catch (System.Net.Sockets.SocketException ex)
{
Console.WriteLine("Error({0}/{1})",
ex.Message, ex.ErrorCode);
return;
}
catch (ObjectDisposedException ex)
{
//すでに閉じている時は終了
Console.WriteLine("Socket closed");
return;
}
//データを文字列に変換する
string rcvMsg = System.Text.Encoding.UTF8.GetString(rcvBytes);
var e = new UDP_ReceiveData(rcvMsg, remoteEP.Address.ToString());
Console.WriteLine("datarecived:{0}", rcvMsg);
packet_receive(this, e);
//再びデータ受信を開始する
udp.BeginReceive(ReceiveCallback, udp);
}
public void Initialize()
{
tcpServer = new TcpListener(IPAddress.Any, 1901);
tcpServer.BeginAcceptTcpClient()
sender = new UdpClient();
sender.DontFragment = true;
sender.JoinMulticastGroup(remoteEndPoint.Address);
listener = new UdpClient();
listener.ExclusiveAddressUse = false;
listener.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
listener.ExclusiveAddressUse = false;
listener.Client.Bind(anyEndPoint);
listener.DontFragment = true;
listener.JoinMulticastGroup(remoteEndPoint.Address);
listener.BeginReceive(ReceiveCallback, null);
}
public void Discover()
{
m_endpoints = new HashSet<IPEndPoint>();
//m_discover = new UdpClient(new IPEndPoint(IPAddress.Broadcast, RemoteRunner.DiscoverPort));
m_discover = new UdpClient();
m_discover.EnableBroadcast = true;
var endpoint = new IPEndPoint(IPAddress.Broadcast, RemoteRunner.DiscoverPort);
for (int i = 0; i < NumBroadcast; i++)
{
m_discover.Send(RemoteRunner.DiscoverPackage, RemoteRunner.DiscoverPackage.Length, endpoint);
m_discover.BeginReceive(DiscoverCallback, null);
Thread.Sleep(BroadcastDelay);
}
m_discover.Close();
m_clients = new List<TcpClient>();
foreach (var addr in m_endpoints)
{
Console.WriteLine(addr);
var cl = new TcpClient();
cl.BeginConnect(addr.Address, RemoteRunner.ConnectionPort, ConnectCallback, cl);
}
}
public void StartServer()
{
//var client = new MiNetClient(new IPEndPoint(Dns.GetHostEntry("pe.mineplex.com").AddressList[0], 19132), "TheGrey");
_serverTargetEndpoint = new IPEndPoint(Dns.GetHostEntry("yodamine.com").AddressList[0], 19135);
//_serverTargetEndpoint = new IPEndPoint(IPAddress.Parse("147.75.194.126"), 19132);
_serverListenerEndPoint = Endpoint = new IPEndPoint(IPAddress.Any, 19134);
_listener = new UdpClient(Endpoint);
_listener.Client.ReceiveBufferSize = int.MaxValue;
_listener.Client.SendBufferSize = int.MaxValue;
_listener.DontFragment = false;
_listener.EnableBroadcast = false;
// SIO_UDP_CONNRESET (opcode setting: I, T==3)
// Windows: Controls whether UDP PORT_UNREACHABLE messages are reported.
// - Set to TRUE to enable reporting.
// - Set to FALSE to disable reporting.
uint IOC_IN = 0x80000000;
uint IOC_VENDOR = 0x18000000;
uint SIO_UDP_CONNRESET = IOC_IN | IOC_VENDOR | 12;
_listener.Client.IOControl((int) SIO_UDP_CONNRESET, new byte[] {Convert.ToByte(false)}, null);
_listener.BeginReceive(ReceiveCallback, _listener);
}
public void beginReceivingUdp(int port)
{
client = new UdpClient(port);
sourceIp = new IPEndPoint(IPAddress.Any, port);
bool isComplete = true;
IAsyncResult udpCallback = null;
try
{
while (true)
{
if (isComplete)
{
udpCallback = client.BeginReceive(new AsyncCallback(callback), null);
isComplete = false;
}
else
{
if (udpCallback.IsCompleted == true) { isComplete = true; }
}
}
}
catch (Exception ex)
{
Console.WriteLine("W10.001.01 Exception during receiving of udp, Exception[" + ex + "]");
}
}
public UPnPSearchSniffer()
{
IPAddress[] LocalAddresses = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
ArrayList temp = new ArrayList();
foreach (IPAddress i in LocalAddresses) temp.Add(i);
temp.Add(IPAddress.Loopback);
LocalAddresses = (IPAddress[])temp.ToArray(typeof(IPAddress));
for (int id = 0; id < LocalAddresses.Length; ++id)
{
try
{
UdpClient ssdpSession = new UdpClient(new IPEndPoint(LocalAddresses[id], 0));
ssdpSession.EnableBroadcast = true;
if (!Utils.IsMono())
{
uint IOC_IN = 0x80000000;
uint IOC_VENDOR = 0x18000000;
uint SIO_UDP_CONNRESET = IOC_IN | IOC_VENDOR | 12;
ssdpSession.Client.IOControl((int)SIO_UDP_CONNRESET, new byte[] { Convert.ToByte(false) }, null);
}
ssdpSession.BeginReceive(new AsyncCallback(OnReceiveSink), ssdpSession);
SSDPSessions[ssdpSession] = ssdpSession;
}
catch (Exception) { }
}
}
private void OnPacketReceived(IAsyncResult ar)
{
if (udp != null)
{
lock (udp)
{
receivingPending = false;
IPEndPoint remoteEP = null;
try
{
byte[] bytes = udp.EndReceive(ar, ref remoteEP);
if (bytes != null && bytes.Length > 0)
{
remoteEndPoint = remoteEP;
lock (packets)
{
bool first = packets.Count == 0;
packets.Add(bytes);
if (first)
{
received.Set();
}
}
// begin another.
if (udp != null)
{
receivingPending = true;
udp.BeginReceive(new AsyncCallback(OnPacketReceived), this);
}
}
}
catch (SocketException ex)
{
// receive is forceably closed on send, so ignore that
if (ex.SocketErrorCode != SocketError.ConnectionReset)
{
//throw;
}
}
catch (Exception)
{
// perhaps it was closed...
}
}
}
}
protected EndPointReflector()
{
log.Debug("Create an EndPointReflector");
keepGoing = true;
udpClient = new UdpClient(endPointReflectorPort, AddressFamily.InterNetwork);
log.DebugFormat("Start listening for an incoming request on port {0}", ((IPEndPoint) udpClient.Client.LocalEndPoint).Port);
udpClient.BeginReceive(ReceiveCallback, null);
}
/// <summary>
/// Connect to any remote machine that wants to send to the given local port.
/// </summary>
public void Connect(IPEndPoint localEndPoint)
{
this.localEndPoint = localEndPoint;
udp = new System.Net.Sockets.UdpClient(localEndPoint);
udp.Client.ReceiveBufferSize = 1000000;
receivingPending = true;
udp.BeginReceive(new AsyncCallback(OnPacketReceived), this);
}
public override void Start()
{
if (Running)
return;
listener = new UdpClient(endpoint.Port);
listener.BeginReceive(new AsyncCallback(ReceiveData), listener);
}
/// <summary>
/// Connect to any remote machine that wants to send to the given local port.
/// </summary>
public void Connect(IPEndPoint localEndPoint)
{
this.localEndPoint = localEndPoint;
udp = new System.Net.Sockets.UdpClient(localEndPoint);
udp.Client.ReceiveBufferSize = 1000000;
receivingPending = true;
udp.BeginReceive(new AsyncCallback(OnPacketReceived), this);
}
/// <summary>
/// Initializes a new instance of the MulticastDnsClient class.
/// </summary>
public MulticastDnsClient()
{
_nextTransId = (ushort)new Random().Next();
_transactions = new Dictionary<ushort, Transaction>();
_udpClient = new UdpClient(new IPEndPoint(IPAddress.Any, 0));
_udpClient.BeginReceive(ReceiveCallback, null);
_cache = new Dictionary<string, Dictionary<RecordType, List<ResourceRecord>>>();
}
public AppLogic()
{
State = AppLogicState.WaitingForDropFile;
m_udpFileReceiver = new UdpClient(UDP_LISTENER_PORT);
m_udpFileReceiverResult = m_udpFileReceiver.BeginReceive(
o => Program.WrapThreadSafeDelegate(this.UDPProtocol_0_1)(), null);
}
private void Init()
{
int udpServerPort = Convert.ToInt32(ConfigurationManager.AppSettings["UdpServerPort"]);
_udpServer = new UdpClient(udpServerPort);
Console.WriteLine(" S E R V E R IS S T A R T E D ");
Console.WriteLine("* Waiting for Clients...");
_udpServer.BeginReceive(DataReceived, _udpServer);
}
public MainWindow()
{
InitializeComponent();
udpclient = new System.Net.Sockets.UdpClient(15000);
udpclient.BeginReceive(receiveCallback, udpclient);
this.receivedData = new System.IO.MemoryStream();
}
public void Start()
{
Port = Program.ServerConfiguration.QueryPort;
Udp = new UdpClient(Port);
UserList = new ConcurrentDictionary<IPEndPoint, QueryUser>();
Timer = new Timer(ResetUserList, null, 0, 30000);
CToken = new CancellationTokenSource();
Udp.BeginReceive(HandleReceive, null);
}
public OscClient(IPEndPoint serverEndpoint)
{
_serverEndpoint = serverEndpoint;
_udp = new UdpClient();
_callback = new System.AsyncCallback(HandleReceive);
_oscParser = new keijiro.Osc.Parser();
_udp.BeginReceive(_callback, null);
}
public UdpClientContext()
{
BeginReceiveUPDserver = new AsyncCallback(OnBeginReceiveUPDserverFinished);
UdpServerSearcher = new UdpClient(BroadcastServer.Port, AddressFamily.InterNetwork);
UdpServerSearcher.JoinMulticastGroup(BroadcastServer.Address, 1); //1 router hops for just local network
UdpServerSearcher.BeginReceive(BeginReceiveUPDserver, null);
}
public static void Connect()
{
UdpClient client = new UdpClient();
ep = new IPEndPoint(IPAddress.Parse(Address), Port);
client.Connect(ep);
Byte[] data = Encoding.ASCII.GetBytes(requestType["Container"]);
client.BeginSend(data, data.Length, new AsyncCallback(SendCallback), client);
client.BeginReceive(new AsyncCallback(ReceiveCallBack), client);
}
public ConnectionManager(WebcamServer s)
{
server = s;
camManager = new CameraManager();
clients = new List<string>();
udpSender = new UdpClient();
udpListener = new UdpClient(1112);
udpListener.BeginReceive(new AsyncCallback(OnReceive), udpListener);
}
private void connectButton_Click(object sender, EventArgs e)
{
connectButton.Enabled = false;
recivePortTextBox.Enabled = false;
int recivePortText = int.Parse(recivePortTextBox.Text);
udpClientReciver = new UdpClient(recivePortText);//8989
// ソケット非同期受信(System.AsyncCallback)
asyncResult = udpClientReciver.BeginReceive(ReceiveCallback, udpClientReciver);
}
public void Listen()
{
m_discoverClient = new UdpClient(DiscoverPort);
m_discoverClient.BeginReceive(DiscoverCallback, null);
m_listener = new TcpListener(IPAddress.Any, ConnectionPort);
m_listener.Start(10);
m_listener.BeginAcceptTcpClient(AcceptCallback, null);
}
static UDPVideoShim()
{
try
{
client = new UdpClient(5600, AddressFamily.InterNetwork);
client.BeginReceive(clientdata, client);
}
catch { }
}
public CommunicationHandler()
{
_client = new UdpClient(3007);
_client.EnableBroadcast = true;
_client.JoinMulticastGroup(IPAddress.Parse("224.109.108.107"));
_client.BeginReceive(HandleClientPacketReceived, _client);
CommsCallback = null;
}
//
// UDP送受信関連
//
// UDP受信
private void buttonStart_Click(object sender, EventArgs e)
{
//
// 実施中→終了
//
if (udpClient_ != null)
{
udpClient_.Close();
udpClient_ = null;
// ボタン等
change_ui(false);
return;
}
//
// 未実施→実施
//
// 送信元、送信先
try
{
sourcePort_ = Int32.Parse(textBoxBindPort.Text);
sendPort_ = Int32.Parse(textBoxSendPort.Text);
sendIPAddress_ = IPAddress.Parse(textBoxSendIPAddress.Text);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return; // 開始せず中断
}
try
{
//UdpClientを作成し、指定したポート番号にバインドする
System.Net.IPEndPoint localEP =
new System.Net.IPEndPoint(
System.Net.IPAddress.Any, //sourceIPAddress_,
Int32.Parse(textBoxBindPort.Text)
);
udpClient_ = new System.Net.Sockets.UdpClient(localEP);
//非同期的なデータ受信を開始する
udpClient_.BeginReceive(ReceiveCallback, udpClient_);
// ボタン等
change_ui(true);
}
catch (Exception ex)
{
if (udpClient_ != null)
{
udpClient_.Close();
}
udpClient_ = null;
MessageBox.Show(ex.Message, "error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void ReceiveData(IAsyncResult ar)
{
try
{
System.Net.Sockets.UdpClient listener = (System.Net.Sockets.UdpClient)ar.AsyncState;
byte[] data = listener.EndReceive(ar, ref endpoint);
#endif
if (data.Length < 16)
{
return;//bad request
}
UdpTrackerMessage request = UdpTrackerMessage.DecodeMessage(data, 0, data.Length, MessageType.Request);
switch (request.Action)
{
case 0:
ReceiveConnect((ConnectMessage)request);
break;
case 1:
ReceiveAnnounce((AnnounceMessage)request);
break;
case 2:
ReceiveScrape((ScrapeMessage)request);
break;
case 3:
ReceiveError((ErrorMessage)request);
break;
default:
throw new ProtocolException(string.Format("Invalid udp message received: {0}", request.Action));
}
}
catch (Exception e)
{
Logger.Log(null, e.ToString());
}
finally
{
if (Running)
{
#if NETSTANDARD1_5
result = await listener.ReceiveAsync();
ReceiveData(result, client);
#else
listener.BeginReceive(new AsyncCallback(ReceiveData), listener);
#endif
}
}
}
/// <summary>
/// Open udpClient and listen for the port from directed host
/// </summary>
/// <param name="remoteHost">Remote host to listen. Use IPAddress.Any if you listen to any host</param>
/// <param name="localPort">listening port</param>
/// <returns></returns>
public int Open(string remoteHost, int localPort)
{
this._localPort = localPort;
// Create UDP client
_remotEndPoint = new IPEndPoint(IPAddress.Parse(remoteHost), localPort);
_udpClient = new System.Net.Sockets.UdpClient(_remotEndPoint);
// 非同期受信を開始
_udpClient.BeginReceive(ReceiveCallBack, this);
return(0);
}
public void ReceiveMessages()
{
lock (this)
{
try
{
udpSend.BeginReceive(receiveCallback, udpReceiveState);
}
catch (SocketException)
{
//string.Format($"SocketException:{exception}");
}
}
}
public Form1()
{
InitializeComponent();
UdpClient udpClient = new System.Net.Sockets.UdpClient(19851);
//UdpClient udpServer = new System.Net.Sockets.UdpClient(19851);
//udpClient.Connect(HOSTADDRESS, 19851);
// udpServer.BeginReceive(requestCallbacServer, udpServer);
udpClient.BeginReceive(requestCallbacClient, udpClient);
Send = new Action <byte[]>(o =>
{
udpClient.SendAsync(o, o.Length, HOSTADDRESS, HOSTPORT);
});
}
/// <summary>
/// Open udpClient and listen for the port from 'any host'
/// </summary>
/// <param name="localPort">listening port</param>
/// <returns></returns>
public int Open(int localPort)
{
_localPort = localPort;
// UDPクライアントを作成
_udpClient = new System.Net.Sockets.UdpClient(_localPort);
// 送信先エンドポイント情報を作成
_receivedEp = new IPEndPoint(IPAddress.Any, 0);
// 非同期受信を開始
_udpClient.BeginReceive(ReceiveCallBack, this);
return(0);
}
private void RecvStart()
{
if (!udp_client_.Client.IsBound)
{
return;
}
/* 受信状態であれば無視 */
if ((recv_task_ar_ != null) && (!recv_task_ar_.IsCompleted))
{
return;
}
/* 受信開始 */
recv_task_ar_ = udp_client_.BeginReceive(RecvTaskComplete, udp_client_);
}
internal UDPNetState(IPEndPoint ep, int readBufferSize)
: base(ep)
{
Reader = new TReader();
Writer = new TWriter();
LastActivity = DateTime.UtcNow;
Client = new UdpClient();
Client.Connect(ep);
Writer.SetClient(Client);
Client.BeginReceive(new AsyncCallback(OnReceived), null);
Reader.OnDisconnect += Dispose;
Reader.OnBufferOverflow += Reader_OnBufferOverflow;
OnConnected();
}
public override void Start()
#endif
{
if (Running)
{
return;
}
//TODO test if it is better to use socket directly
//Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
listener = new System.Net.Sockets.UdpClient(endpoint.Port);
#if NETSTANDARD1_5
var receive = await listener.ReceiveAsync();
ReceiveData(receive, listener);
#else
listener.BeginReceive(new AsyncCallback(ReceiveData), listener);
#endif
}
IEnumerator receive_loop()
{
var e = new System.Net.IPEndPoint(System.Net.IPAddress.Any, listenPort);
var u = new System.Net.Sockets.UdpClient(e);
u.EnableBroadcast = true;
var s = new UdpState();
s.e = e;
s.u = u;
for (;;)
{
received = false;
u.BeginReceive(new System.AsyncCallback(ReceiveCallback), s);
while (!received)
{
yield return(null);
}
}
}
private bool Receive(System.Net.Sockets.UdpClient client)
{
bool success = true;
try
{
// Create the state object.
StateObject state = new StateObject();
state.workSocket = client;
// Begin receiving the data from the remote device.
clientReceive.BeginReceive(new AsyncCallback(ReceiveCallback), state);
}
catch (Exception e)
{
success = false;
Console.WriteLine(e.ToString());
}
return(success);
}
//データを受信した時
private void ReceiveCallback(IAsyncResult ar)
{
System.Net.Sockets.UdpClient udp =
(System.Net.Sockets.UdpClient)ar.AsyncState;
//非同期受信を終了する
System.Net.IPEndPoint remoteEP = null;
byte[] rcvBytes;
try
{
rcvBytes = udp.EndReceive(ar, ref remoteEP);
}
catch (System.Net.Sockets.SocketException ex)
{
Console.WriteLine("受信エラー({0}/{1})",
ex.Message, ex.ErrorCode);
return;
}
catch (ObjectDisposedException ex)
{
//すでに閉じている時は終了
Console.WriteLine("Socketは閉じられています。");
return;
}
// 受信情報を控えておく（送信データに載せるため）
// 受信データ
lastRcvBytes_ = new byte[rcvBytes.Length];
Array.Copy(rcvBytes, 0, lastRcvBytes_, 0, rcvBytes.Length);
// 受信元
lastRemoteEP_ = remoteEP;
// 転送する
SendUDP(sendIPAddress_, sendPort_); // 送信先に転送する場合
//再びデータ受信を開始する
udp.BeginReceive(ReceiveCallback, udp);
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
// Retrieve the state object and the client socket
// from the asynchronous state object.
StateObject state = (StateObject)ar.AsyncState;
System.Net.Sockets.UdpClient client = state.workSocket;
// Read data from the remote device.
byte[] bytesRead = client.EndReceive(ar, ref localEP);
if (bytesRead.Length > 0)
{
byte[] rd = new byte[bytesRead.Length];
Array.Copy(bytesRead, 0, rd, 0, bytesRead.Length);
if (MessageReceived != null)
{
MessageReceived(rd);
}
// Signal that all bytes have been received.
receiveDone.Set();
// Continue receiving data.
client.BeginReceive(new AsyncCallback(ReceiveCallback), state);
}
else
{
Disconnect();
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
private void OnReceiveData(IAsyncResult asyncResult)
{
System.Net.Sockets.UdpClient conn = (System.Net.Sockets.UdpClient)asyncResult.AsyncState;
try
{
System.Net.IPEndPoint ep = new IPEndPoint(System.Net.IPAddress.Any, 0);
byte[] local_buffer;
int rx = 0;
try
{
local_buffer = conn.EndReceive(asyncResult, ref ep);
rx = local_buffer.Length;
}
catch (Exception) // ICMP port unreachable
{
//restart data receive
conn.BeginReceive(OnReceiveData, conn);
return;
}
if (rx < 14) // Sure it's too small
{
//restart data receive
conn.BeginReceive(OnReceiveData, conn);
return;
}
try
{
int Offset = 0;
Encapsulation_Packet Encapacket = new Encapsulation_Packet(local_buffer, ref Offset, rx);
//verify message
if (Encapacket.IsOK)
{
if (EncapMessageReceived != null)
{
EncapMessageReceived(this, local_buffer, Encapacket, Offset, rx, ep);
}
}
else
{
SequencedAddressItem Itempacket = new SequencedAddressItem(local_buffer, ref Offset, rx);
if (Itempacket.IsOK && (ItemMessageReceived != null))
{
ItemMessageReceived(this, local_buffer, Itempacket, Offset, rx, ep);
}
}
}
catch (Exception ex)
{
Trace.TraceError("Exception in udp recieve: " + ex.Message);
}
finally
{
//restart data receive
conn.BeginReceive(OnReceiveData, conn);
}
}
catch (Exception ex)
{
//restart data receive
if (conn.Client != null)
{
Trace.TraceError("Exception in Ip OnRecieveData: " + ex.Message);
conn.BeginReceive(OnReceiveData, conn);
}
}
}
public static void Start()
{
Socket.Client.Bind(new IPEndPoint(IPAddress.Any, 1337));
Socket.BeginReceive(ReceiveUDP, null);
}
//データを受信した時
private void ReceiveCallback(IAsyncResult ar)
{
System.Net.Sockets.UdpClient udp =
(System.Net.Sockets.UdpClient)ar.AsyncState;
//非同期受信を終了する
System.Net.IPEndPoint remoteEP = null;
byte[] rcvBytes;
try
{
rcvBytes = udp.EndReceive(ar, ref remoteEP);
}
catch (System.Net.Sockets.SocketException ex)
{
Console.WriteLine("受信エラー({0}/{1})",
ex.Message, ex.ErrorCode);
return;
}
catch (ObjectDisposedException ex)
{
//すでに閉じている時は終了
Console.WriteLine("Socketは閉じられています。");
return;
}
// 処理対象？
DhcpPacket rcv_packet = new DhcpPacket(rcvBytes);
Boolean reply = this.dhcplease_.AutoReply(rcv_packet.chaddr_);
Boolean match = this.dhcplease_.Matches(rcv_packet.chaddr_);
{
// 受信情報を控えておく（送信データに載せるため）
// 受信データ
lastRcvBytes_ = new byte[rcvBytes.Length];
Array.Copy(rcvBytes, 0, lastRcvBytes_, 0, rcvBytes.Length);
// 受信元
lastRemoteEP_ = remoteEP;
}
//データを文字列に変換する
string rcvMsg = "0x" + rcv_packet.xid_.ToString("X4") + ", " + rcv_packet.message_type_;
//受信したデータと送信者の情報をRichTextBoxに表示する
string displayMsg = string.Format("{0} [{1} ({2})] < {3}",
DateTime.Now.ToString("HH:mm:ss.fff"), remoteEP.Address, remoteEP.Port, rcvMsg);
textBoxRcvData.BeginInvoke(
new Action <string>(ShowReceivedString), displayMsg);
// 応答する
if (match && (!reply))
{
// 当該MACアドレスが登録されていて、
// かつ、「自動応答」が明示的にOFFされている場合は応答しない
}
else
{
// それ以外は応答する
// 送信先のIPアドレスは remoteEP.Address ではなく、ブロードキャスト
SendUDP(sourceIPAddress_, sourcePort_, IPAddress.Broadcast, remoteEP.Port);
}
//再びデータ受信を開始する
udp.BeginReceive(ReceiveCallback, udp);
}
void StartRecv()
{
// gr: does this throw if socket unreachable/closed?
var RecvAsync = Socket.BeginReceive(new System.AsyncCallback(Recv), null);
}
/// <summary>
/// Begins the receive.
/// </summary>
internal void BeginReceive()
{
mUdpClient.BeginReceive(new AsyncCallback(Callback), null);
}
