public ServerContext(int port, int maxclients, ref List<string> TextStack, string OwnIP)
{
BeginSendUdpServerCallback = new AsyncCallback(OnBeginSendUdpServerCallbackFinished);
ServerMessage = System.Text.Encoding.ASCII.GetBytes("OK:" + OwnIP);
UdpServer = new UdpClient(new IPEndPoint(IPAddress.Any, 8011)); //da bei xp fehler
UdpServer.JoinMulticastGroup(BroadcastServer.Address);
UdpServer.BeginSend(ServerMessage, ServerMessage.Length, BroadcastServer, BeginSendUdpServerCallback, null);
MaxClients = maxclients;
Ip = IPAddress.Any;
this.Port = port;
listener = new TcpListener(Ip, Port);
Clients = new List<ClientContext>(MaxClients);
listener.Start();
BeginAcceptSocketCallback = new AsyncCallback(OnClientConnected);
this.TextStack = TextStack;
}
/*
// TODO: Асинхронная отправка! Или не нужно?
/// <summary>
/// Отправить единичное сообщение на единичный хост
/// </summary>
/// <param name="text">Текст сообщения</param>
// internal static void SendMessage(string RemoteHost, string text)
{
TcpClient client = null;
NetworkStream networkStream = null;
try
{
IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, 12000);
// TODO : заменить 127.0.0.1 на что-то более верное
// TODO: добавить динамическое выделение портов (из пула свободных портов)
// получатель сообщения при
IPEndPoint remoteEndPoint = new IPEndPoint(IPAddress.Parse(RemoteHost), 11000);
// TODO :забить номера портов в настройки
client = new TcpClient(localEndPoint);
client.Connect(remoteEndPoint);
networkStream = client.GetStream();
byte[] sendBytes = Encoding.UTF8.GetBytes(text);
networkStream.Write(sendBytes, 0, sendBytes.Length);
byte[] bytes = new byte[client.ReceiveBufferSize];
networkStream.Read(bytes, 0, client.ReceiveBufferSize);
string returnData = Encoding.UTF8.GetString(bytes);
//MessageBox.Show(returnData);
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
finally
{
if (networkStream != null) networkStream.Close();
if (client!=null) client.Close();
}
}
*/
// реализаця с UDP
internal static void SendMessage(string RemoteHost, string text)
{
UdpClient client = null;
try
{
IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Any, 12000);
// получатель сообщения при
IPEndPoint remoteEndPoint = new IPEndPoint(IPAddress.Parse(RemoteHost), 11000);
// TODO :забить номера портов в настройки
client = new UdpClient(localEndPoint);
byte[] sendBytes = Encoding.ASCII.GetBytes(text);
networkStream.Write(sendBytes, 0, sendBytes.Length);
byte[] bytes = new byte[client.ReceiveBufferSize];
networkStream.Read(bytes, 0, client.ReceiveBufferSize);
string returnData = Encoding.UTF8.GetString(bytes);
//MessageBox.Show(returnData);
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
finally
{
if (networkStream != null) networkStream.Close();
if (client != null) client.Close();
}
}
// Use this for initialization
void Start()
{
client = new System.Net.Sockets.UdpClient();
ep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8000);
client.Connect(ep);
InvokeRepeating("sendPos", 0.0f, 0.0167f);
}
public override void Send(string serverHostName, string serverIpAddress, int serverPort, string message)
{
var ipAddress = IPAddress.Parse(serverIpAddress);
IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, serverPort);
using(UdpClient udpClient = new UdpClient()){
var gzipMessage = GzipMessage(message);
if (MaxChunkSize < gzipMessage.Length)
{
var chunkCount = gzipMessage.Length / MaxChunkSize + 1;
var messageId = GenerateMessageId(serverHostName);
for (int i = 0; i < chunkCount; i++)
{
var messageChunkPrefix = CreateChunkedMessagePart(messageId, i, chunkCount);
var skip = i * MaxChunkSize;
var messageChunkSuffix = gzipMessage.Skip(skip).Take(MaxChunkSize).ToArray<byte>();
var messageChunkFull = new byte[messageChunkPrefix.Length + messageChunkSuffix.Length];
messageChunkPrefix.CopyTo(messageChunkFull, 0);
messageChunkSuffix.CopyTo(messageChunkFull, messageChunkPrefix.Length);
udpClient.Send(messageChunkFull, messageChunkFull.Length, ipEndPoint);
}
}
else
{
udpClient.Send(gzipMessage, gzipMessage.Length, ipEndPoint);
}
}
}
public void Send(byte[] datagram, int bytes, IPEndPoint ipEndPoint)
{
using (var udpClient = new UdpClient())
{
udpClient.Send(datagram, bytes, ipEndPoint);
}
}
public static void Init(TestContext context)
{
Trace.Listeners.Add(new ConsoleTraceListener());
//Helper.Driver.Profile.DriverPath = "E:\\Workbench\\ZeroHub\\ZeroHub\\SharpNetUnitTest\\bin\\Debug\\Drivers\\";
//Helper.Driver.Uninstall();
//Helper.Driver.Install();
LocalIP = "10.3.0.1";
RemoteIPRange = "10.3.0.0"; // RemoteIPRange & Mask , and filter away local
RemoteIP = "10.3.0.5";
Mask = "255.255.255.0";
net = new SharpNet();
net.Tap.SetMediaStatus(true);
net.Tap.ConfigTun(LocalIP, RemoteIPRange, Mask);
net.Tap.SetIpAddress(LocalIP, Mask, "10.3.0.0");
//net.Tap.ConfigDHCPMASQ("192.168.137.1", "255.255.255.255", "1.1.1.1", 2);
Task.Delay(TimeSpan.FromSeconds(5)).Wait();
ping = new Ping();
localPort = 233;
remotePort = 233;
local = new IPEndPoint(IPAddress.Parse(LocalIP), localPort);
remote = new IPEndPoint(IPAddress.Parse(RemoteIP), remotePort);
//remote = new IPEndPoint(IPAddress.Any, remotePort);
client = new System.Net.Sockets.UdpClient(local);
}
private static void ReceiveMessage()
{
System.Net.Sockets.UdpClient receiver = new System.Net.Sockets.UdpClient(LOCAL_PORT); // UdpClient for receiving incoming data
// IPEndPoint remoteIp = new IPEndPoint(IPAddress.Parse("80.234.45.88"), 8888); // address of the sending server
IPEndPoint remoteIp = null; // address of the sending server (NULL means Any)
try
{
while (true)
{
byte[] data = receiver.Receive(ref remoteIp); // receive data from the server
// string message = Encoding.Unicode.GetString(data);
//Console.WriteLine("server data: {0}", message);
Console.WriteLine($"Received broadcast from {remoteIp}");
Console.WriteLine($" {Encoding.ASCII.GetString(data, 0, data.Length)}");
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
receiver.Close();
}
}
private async void ReceiveData(UdpReceiveResult result, UdpClient client)
{
try
{
System.Net.Sockets.UdpClient listener = client;
byte[] data = result.Buffer;
endpoint = result.RemoteEndPoint;
private bool Connect(string ip, int port)
{
try
{
if (port == 0 || ip == "")
{
return(false);
}
Debug.Log("connect battle udp-server " + ip + ":" + port);
this.TryCloseSocket();
IPAddress ipAddress;
AddressFamily af;
bool ok = Misc.Utils.IPV4ToIPV6(ip, out ipAddress, out af);
_server_endpoint = new IPEndPoint(ipAddress, port);
_inner_socket = new UdpClient();
_inner_socket.Connect(_server_endpoint);
_inner_socket.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.SendBuffer, 1024 * 16);
_inner_socket.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveBuffer, 1024 * 32);
this.isConnected = true;
}
catch (Exception e)
{
this.isConnected = false;
_inner_socket = null;
Debug.Log(e.Message);
return(false);
}
return(true);
}
/// <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);
}
// Connect for receiving messages
public bool Connect(int localPort)
{
Disconnect();
receiveDone.Reset();
// Connect to a local port.
try
{
localEP = new IPEndPoint(IPAddress.Any, localPort);
// Create a UDP Client.
clientReceive = new System.Net.Sockets.UdpClient(localEP);
if (ConnectedStateChanged != null) ConnectedStateChanged(this, new ConnectedStateChangedEventArgs(true));
// Setup the receiver client thread
receiverTask = new Thread(ReceiverLoop);
receiverTask.Start();
// Signal that the connection has been made.
connectDone.Set();
}
catch (Exception e)
{
Disconnect();
//
Console.WriteLine(e.ToString());
}
return IsConnected;
}
private bool startListen()
{
try
{
if (tcpListener == null)
tcpListener = new TcpListener(IPAddress.Any, tcpPort);
if (udpClient == null || udpClosed)
{
udpClient = new UdpClient(udpPort);
//udpClient = new UdpClient(udpPort, AddressFamily.InterNetwork);
udpClosed = false;
}
if (udpListenThread == null || !udpListenThread.IsAlive)
{
udpListenThread = new Thread(new ThreadStart(listenForUdpClients));
udpListenThread.IsBackground = true;
udpListenThread.Start();
}
if (tcpListenThread == null || !tcpListenThread.IsAlive)
{
tcpListenThread = new Thread(new ThreadStart(listenForTcpClients));
tcpListenThread.IsBackground = true;
tcpListenThread.Start();
}
Trace.WriteLine("Server started on TCP-Port: " + tcpPort + " and UDP-Port: " + udpPort);
return true;
}
catch
{
Trace.WriteLine("Couldn't start server on Tcp-Port: " + tcpPort + " and Udp-Port: " + udpPort);
return false;
}
}
/// <summary>
/// Stops the UDP client.
/// </summary>
/// <param name="udpClient">The UDP client.</param>
public static void StopUDPClient(UdpClient udpClient)
{
if (udpClient != null)
{
udpClient.Close();
}
}
//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);
}
//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 WirelessMouse()
{
_mListener = new UdpClient(5051);
_mEndPoint = new IPEndPoint(IPAddress.Any, 5051);
Sensitivity = 10;
}
/// <summary>
/// Does the video job.
/// </summary>
private void DoWorkerJob(System.Net.Sockets.UdpClient socket, int data_port)
{
IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Any, data_port);
try
{
// loop until we get an exception eg the socket closed
while (true)
{
byte[] frame = socket.Receive(ref ipEndPoint);
// We have an RTP frame.
// Fire the DataReceived event with 'frame'
//Console.WriteLine("Received RTP data on port " + data_port);
Rtsp.Messages.RtspChunk currentMessage = new Rtsp.Messages.RtspData();
// aMessage.SourcePort = ??
currentMessage.Data = frame;
((Rtsp.Messages.RtspData)currentMessage).Channel = data_port;
OnDataReceived(new Rtsp.RtspChunkEventArgs(currentMessage));
}
}
catch (ObjectDisposedException)
{
}
catch (SocketException)
{
}
}
/// <summary>
/// Default constructor for <code>UdpSocketClient.</code>
/// </summary>
public UdpSocketClient()
{
_backingUdpClient = new UdpClient
{
EnableBroadcast = true
};
}
private static bool hostname_port_Validate(string hostname, int port)
{
bool no_error = true;
try {
// When hostname is not recognized as an ip address,
// UdpClient take it as an hostname and
// try to resolve it using network.
// So it could take some times.
// So I do not use it.
// System.Net.Sockets.UdpClient udp = new System.Net.Sockets.UdpClient(hostname, port);
// Parse accepts many things as ip address :
// 127.0.0 127.0 127 6543
System.Net.IPAddress ipadd;
no_error = System.Net.IPAddress.TryParse(hostname, out ipadd);
if (no_error)
{
System.Net.Sockets.UdpClient udp = new System.Net.Sockets.UdpClient(hostname, port);
}
}
catch (Exception)
{
no_error = false;
}
return(no_error);
}
private void listen()
{
UdpClient uc = new UdpClient(9527);//udp协议添加端口号
while (true)
{
IPEndPoint ipep = new IPEndPoint(IPAddress.Any,0);//将网络端点转化为ip地址 和端口号
byte[] bmsg = uc.Receive(ref ipep);//返回有远程主机发出的udp数据报
string msg = Encoding.Default.GetString(bmsg);//将字节转化为文本
string[] s = msg.Split('|');//元素分隔
if(s.Length != 4)
{
continue;
}
if(s[0]=="LOGIN")
{
Friend friend=new Friend();
int curIndex = Convert.ToInt32(s[2]);
if (curIndex<0 || curIndex>=this.ilHeadImages.Images.Count)
{
curIndex = 0;
}
friend.HeadImageIndex =curIndex;
friend.NickName = s[1];
friend.Shuoshuo=s[3];
object[] pars=new object[1];
pars[0]=friend;
this.Invoke(new delAddFriend(this.addUcf),pars[0]);
}
}
}
protected override void Loop(CancellationToken token)
{
using (var udpClient = new UdpClient(NavdataPort))
{
udpClient.Connect(_configuration.DroneHostname, NavdataPort);
SendKeepAliveSignal(udpClient);
var droneEp = new IPEndPoint(IPAddress.Any, NavdataPort);
Stopwatch swKeepAlive = Stopwatch.StartNew();
Stopwatch swNavdataTimeout = Stopwatch.StartNew();
while (token.IsCancellationRequested == false &&
swNavdataTimeout.ElapsedMilliseconds < NavdataTimeout)
{
if (udpClient.Available > 0)
{
byte[] data = udpClient.Receive(ref droneEp);
var packet = new NavigationPacket
{
Timestamp = DateTime.UtcNow.Ticks,
Data = data
};
_navigationPacketAcquired(packet);
swNavdataTimeout.Restart();
}
if (swKeepAlive.ElapsedMilliseconds > KeepAliveTimeout)
{
SendKeepAliveSignal(udpClient);
swKeepAlive.Restart();
}
Thread.Sleep(5);
}
}
}
protected void serverLoop()
{
Trace.WriteLine("Waiting for UDP messages.");
listener = new UdpClient(UDP_PORT);
IPEndPoint groupEP = new IPEndPoint(IPAddress.Any, UDP_PORT);
byte[] receive_byte_array;
bool running = true;
while (running)
{
try
{
receive_byte_array = listener.Receive(ref groupEP);
if (receive_byte_array.Length != 2)
{
Trace.WriteLine("Invalid UDP message received. Ignored message!");
continue;
}
Trace.WriteLine("Upp fan speed message received.");
int fan = receive_byte_array[0];
byte speed = receive_byte_array[1];
fanControlDataObject.setPinSpeed(fan, speed, true);
}
catch
{
running = false;
}
}
}
// Start is called before the first frame update
void Start()
{
//UdpClientオブジェクトを作成する
udp = new System.Net.Sockets.UdpClient();
udp.EnableBroadcast = true;
udp.Connect(new IPEndPoint(IPAddress.Broadcast, remotePort));
}
public SoundProxy(string branch, SipTransportBase sipProxy)
{
if (null == sipProxy)
{
throw new ArgumentNullException("settings");
}
if (null == branch)
{
throw new ArgumentNullException("branch");
}
if (0 == branch.Length)
{
throw new ArgumentException("Branch not specified.");
}
if (branch.Length > 250)
{
throw new ArgumentException("Branch is too long.", "branch");
}
m_SipTransport = sipProxy;
m_BranchAscii = SipTransportBase.g_Ascii.GetBytes(branch);
m_udpClient = new System.Net.Sockets.UdpClient(
new NET.IPEndPoint(m_SipTransport.LocalAddress, 0)
);
m_udpReceiveThread = new System.Threading.Thread(UdpReceiveProc);
m_udpReceiveThread.Start();
}
public ReliableUDPListener(UdpClient udp)
{
this.Udp = udp;
this.RecieveThread = new Thread(ProcRecieve);
this.RecieveThread.Start();
}
// Connect for receiving messages
public bool Connect(int localPort)
{
Disconnect();
receiveDone.Reset();
// Connect to a local port.
try
{
localEP = new IPEndPoint(IPAddress.Any, localPort);
// Create a UDP Client.
clientReceive = new System.Net.Sockets.UdpClient(localEP);
if (ConnectedStateChanged != null)
{
ConnectedStateChanged(this, new ConnectedStateChangedEventArgs(true));
}
// Setup the receiver client thread
receiverTask = new Thread(ReceiverLoop);
receiverTask.Start();
// Signal that the connection has been made.
connectDone.Set();
}
catch (Exception e)
{
Disconnect();
//
Console.WriteLine(e.ToString());
}
return(IsConnected);
}
public void ReceiveCallback(System.IAsyncResult ar)
{
System.Net.Sockets.UdpClient u = (System.Net.Sockets.UdpClient)((UdpState)(ar.AsyncState)).u;
System.Net.IPEndPoint e = (System.Net.IPEndPoint)((UdpState)(ar.AsyncState)).e;
var receiveBytes = u.EndReceive(ar, ref e);
Debug.Log(BitConverter.ToString(receiveBytes));
int pos = 16; // 16バイトから開始
int width = 0;
for (int i = 0; i < 4; i++)
{
width = width * 256 + receiveBytes[pos++];
}
int height = 0;
for (int i = 0; i < 4; i++)
{
height = height * 256 + receiveBytes[pos++];
}
ReceiveBytes = receiveBytes;
H = height;
W = width;
received = true;
}
public void Connect()
{
try
{
System.Net.IPHostEntry hostEntry = System.Net.Dns.GetHostEntry(this.TimeServer);
System.Net.IPEndPoint endPoint = new System.Net.IPEndPoint(hostEntry.AddressList[0], 123);
System.Net.Sockets.UdpClient udpClient = new System.Net.Sockets.UdpClient();
udpClient.Client.ReceiveTimeout = 3000;
udpClient.Client.SendTimeout = 3000;
udpClient.Connect(endPoint);
this.Initialize();
udpClient.Send(this.NTPData, this.NTPData.Length);
this.NTPData = udpClient.Receive(ref endPoint);
this.ReceptionTimestamp = System.DateTime.Now;
if (!this.IsResponseValid())
{
throw new System.Exception("Invalid response from " + this.TimeServer);
}
}
catch (System.Net.Sockets.SocketException ex)
{
Log.WriteError("NTPʱ¼ä»ñȡʧ°Ü£º" + ¡¡ex.Message);
throw new System.Exception(ex.Message);
}
}
public GDISendingChannel(GDIDeviceContext dc)
{
fFormatter = new BinaryFormatter();
fMemoryStream = new MemoryStream(2048);
fDeviceContext = dc;
// Create the client
fGDISpeaker = new UdpClient();
// Create the broadcast socket
IPAddress ip = IPAddress.Parse(GDIPortal.Multicast_Pixtour_Group);
fBroadcastSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
fBroadcastSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(ip));
fBroadcastSocket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, 255);
IPEndPoint ipep = new IPEndPoint(IPAddress.Parse(GDIPortal.Multicast_Pixtour_Group), GDIPortal.Multicast_Pixtour_Port);
fBroadcastSocket.Connect(ipep);
// Setup the speaker
fGraphPort = new GCDelegate(fDeviceContext.Resolution);
fGraphPort.CommandPacked += new GCDelegate.DrawCommandProc(CommandPacked);
// Setup the antennae to listen for commands
fReceiver = new GDIReceivingChannel(GDIPortal.Multicast_Pixtour_Group, GDIPortal.Multicast_Pixtour_Port, fDeviceContext);
}
public void Stop()
{
_IsStarted = false;
SockThread.Join();
udpclient = null;
}
public void Listen()
{
using (var udpClient = new UdpClient(_listenPort))
{
_listen = true;
var remoteEp = new IPEndPoint(IPAddress.Any, _listenPort);
while (_listen)
{
var data = udpClient.Receive(ref remoteEp);
if (data.Length <= 0)
{
continue;
}
if (_messageQueue.Count > _messageFloodLimit) //Overflow
{
continue;
}
var rawMessage = new RawMessage()
{
Port = remoteEp.Port,
IpAddress = remoteEp.Address,
Message = System.Text.Encoding.UTF8.GetString(data)
};
_messageQueue.Enqueue(rawMessage);
}
udpClient.Close();
}
}
public XPlaneData(string remoteHost, int remotePort = 49000, string localHost = "127.0.0.1", int localPort = 49010)
{
_remoteEP = new IPEndPoint(IPAddress.Parse(remoteHost), remotePort);
_localEP = new IPEndPoint(IPAddress.Parse(localHost), localPort);
_udpClient = new UdpClient();
_udpClient.Client.Bind(_localEP);
}
private void HardwareReadout()
{
try
{
//Creates a UdpClient for reading incoming data.
UdpClient receivingUdpClient = new UdpClient(_poort);
//Creates an IPEndPoint to record the IP Address and port number of the sender.
// The IPEndPoint will allow you to read datagrams sent from any source.
IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
while (true)
{
byte[] receivedData = receivingUdpClient.Receive(ref RemoteIpEndPoint); // Blocking untill new data
if (NewData != null)
{
// Synchroon
NewData(receivedData);
// Asynchroon
//Task.Factory.StartNew(() => NewData(receivedData));
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "Receiver error");
}
}
private void Connect(IPEndPoint endPoint, int inputDeviceNumber, INetworkChatCodec codec)
{
waveIn = new WaveIn();
waveIn.BufferMilliseconds = 50;
waveIn.DeviceNumber = inputDeviceNumber;
waveIn.WaveFormat = codec.RecordFormat;
waveIn.DataAvailable += waveIn_DataAvailable;
waveIn.StartRecording();
udpSender = new UdpClient();
udpListener = new UdpClient();
// To allow us to talk to ourselves for test purposes:
// http://stackoverflow.com/questions/687868/sending-and-receiving-udp-packets-between-two-programs-on-the-same-computer
udpListener.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
udpListener.Client.Bind(endPoint);
udpSender.Connect(endPoint);
waveOut = new WaveOut();
waveProvider = new BufferedWaveProvider(codec.RecordFormat);
waveOut.Init(waveProvider);
waveOut.Play();
connected = true;
var state = new ListenerThreadState { Codec = codec, EndPoint = endPoint };
ThreadPool.QueueUserWorkItem(ListenerThread, state);
}
public UdpClientAdapter(UdpClient udpClient)
{
if (udpClient == null)
throw new ArgumentNullException("udpClient");
_udpClient = udpClient;
}
private void Find()
{
try
{
Cursor = Cursors.WaitCursor;
byte[] dnsQuery;
byte[] dnsReply;
UdpClient dnsClient = new UdpClient(textBoxDnsServer.Text, 53);
dnsQuery = MakeQuery(DateTime.Now.Millisecond * 60,
textBoxDomain.Text);
dnsClient.Send(dnsQuery, dnsQuery.Length);
IPEndPoint ipEndPoint = null;
dnsReply = dnsClient.Receive(ref ipEndPoint);
richTextBoxMXServers.Text = MakeResponse(dnsReply, textBoxDomain.Text);
}
catch (SocketException ex)
{
MessageBox.Show(ex.Message, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
Cursor = Cursors.Default;
}
}
public static void StartListener(int port)
{
UdpClient client = new UdpClient();
client.ExclusiveAddressUse = false;
IPEndPoint localEp = new IPEndPoint(IPAddress.Any, port);
client.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
client.ExclusiveAddressUse = false;
client.Client.Bind(localEp);
//IPAddress multicastaddress = IPAddress.Parse("239.0.0.222");
//client.JoinMulticastGroup(multicastaddress);
while (true)
{
Byte[] data = client.Receive(ref localEp);
string strData = Encoding.ASCII.GetString(data);
eventH e = JsonConvert.DeserializeObject<eventH>(strData);
e.handle();
}
}
private void BackgroundListener()
{
IPEndPoint bindingEndpoint = new IPEndPoint(IPAddress.Any, _endPoint.Port);
using (UdpClient client = new UdpClient())
{
client.ExclusiveAddressUse = false;
client.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
client.Client.Bind(bindingEndpoint);
client.JoinMulticastGroup(_endPoint.Address);
bool keepRunning = true;
while (keepRunning)
{
try
{
IPEndPoint remote = new IPEndPoint(IPAddress.Any, _endPoint.Port);
byte[] buffer = client.Receive(ref remote);
lock (this)
{
DataReceived(this, new MulticastDataReceivedEventArgs(remote, buffer));
}
}
catch (ThreadAbortException)
{
keepRunning = false;
Thread.ResetAbort();
}
}
client.DropMulticastGroup(_endPoint.Address);
}
}
void UdpEchoClientMethod(string[] args)
{
//Check for correct amount of arguments.
if ((args.Length < 2) || (args.Length > 3))
throw new ArgumentException("Parameters: <Server> <Word> [<Port>]");
//Name/IPAddress
string server = args[0];
//Use port argument if supplied, otherwise default to 7
int servPort = (args.Length == 3) ? Int32.Parse(args[2]) : 7;
//Convert input string to an array of bytes.
byte[] sendPacket = Encoding.ASCII.GetBytes(args[1]);
//Create a UdpClient instance
UdpClient client = new UdpClient();
try
{
//Send the echo string(packet) to the specified host and port
client.Send(sendPacket, sendPacket.Length, server, servPort);
Console.WriteLine("Sent {0} bytes to the server...", sendPacket.Length);
//This IPEndPoint instance will be populated with the remote sender's endpoint information after the Receive() call
IPEndPoint remoteIPEndPoint = new IPEndPoint(IPAddress.Any, 0);
//Attempt echo reply receive
byte[] rcvPacket = client.Receive(ref remoteIPEndPoint);
Console.WriteLine("Received {0} bytes from {1}: {2}", rcvPacket.Length, remoteIPEndPoint, Encoding.ASCII.GetString(rcvPacket, 0, rcvPacket.Length));
}
catch (SocketException se)
{
Console.WriteLine(se.ErrorCode + ": " + se.Message);
}
client.Close();
}
public UdpClient(SysClient sysClient, IPEndPoint endpoint)
{
this.sysClient = sysClient;
this.endpoint = endpoint;
listener = new UdpObservable(sysClient);
instream = listener.SelectMany(SplitMessages);
}
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);
}
public IPhoneSensor(int port)
{
recievingUdpClient = new UdpClient(port);
RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
calibrateGPS(34.1064,-117.7119);
}
public int Send(string sourceIp, string targetIp, int udpPort, TimeSpan delay, TimeSpan duration, List<string> source)
{
var start = DateTime.UtcNow;
var localCounter = 0;
using (var UC = new UdpClient(new IPEndPoint(IPAddress.Parse(sourceIp), 0)))
{
while (DateTime.UtcNow < start.Add(duration))
{
var txtMsg = source[localCounter % source.Count];
var msg = Encoding.ASCII.GetBytes(txtMsg);
var defMatch = SyslogParser.DefaultParser.Match(txtMsg);
var privalMatch = defMatch.Groups["PRIVAL"].Value.Trim();
var prival = int.Parse(privalMatch);
var sent = new SimpleTxSyslog()
{
Sev = (Severity)Enum.ToObject(typeof(Severity), prival & 0x7),
Fac = (Facility)Enum.ToObject(typeof(Facility), prival >> 3),
Message = defMatch.Groups["MESSAGE"].Value.Trim(),
};
this.SentList.Add(sent);
UC.Send(msg, msg.Length, targetIp, udpPort);
localCounter++;
Thread.Sleep(delay);
}
}
return localCounter;
}
public static IObservable<UdpReceiveResult> CreateListener(IPAddress remoteAddress, int port)
{
if (remoteAddress == null) throw new ArgumentNullException(nameof(remoteAddress));
if (port < 0 || port > 65535) throw new ArgumentOutOfRangeException(nameof(port), port, null);
IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName());
var remoteIPBytes = remoteAddress.GetAddressBytes();
var localAddress =
host.AddressList.FirstOrDefault(ip =>
ip.AddressFamily == remoteAddress.AddressFamily
&& ip.GetAddressBytes().Take(3).SequenceEqual(remoteIPBytes.Take(3)));
if (localAddress == null)
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Resources.ExceptionMessages.Net_NoInterfaceInSameNetwork, remoteAddress, port));
var localEndPoint = new IPEndPoint(localAddress, port);
var remoteEndPoint = new IPEndPoint(remoteAddress, port);
return Observable.Using(
() =>
{
var client = new UdpClient { ExclusiveAddressUse = false };
client.Client.Bind(localEndPoint);
client.Connect(remoteEndPoint.Address, 0);
return client;
},
client => Observable.While(() => client.Client.Connected, Observable.FromAsync(client.ReceiveAsync)));
}
public void TestConnectAsync_Success()
{
var endPoint = new IPEndPoint( IPAddress.Loopback, 57319 );
var listener = new UdpClient( endPoint );
try
{
using ( var target = new UdpClientTransportManager( new RpcClientConfiguration() ) )
using ( var result = target.ConnectAsync( endPoint ) )
{
Assert.That( result.Wait( TimeSpan.FromSeconds( 1 ) ) );
try
{
var transport = result.Result;
Assert.That( transport.BoundSocket, Is.Not.Null );
Assert.That( ( transport as UdpClientTransport ).RemoteEndPoint, Is.EqualTo( endPoint ) );
}
finally
{
result.Result.Dispose();
}
}
}
finally
{
listener.Close();
}
}
public UdpSocket(string Hostname, int Port, System.Action <byte[]> OnPacket, System.Action OnConnected, System.Action <string> OnCloseError)
{
// todo: put some "unhandled" debug in these
if (OnPacket == null)
{
OnPacket = (Packet) => { }
}
;
if (OnCloseError == null)
{
OnCloseError = (Error) => { }
}
;
if (OnConnected == null)
{
OnConnected = () => { }
}
;
this.OnPacket = OnPacket;
this.OnCloseError = OnCloseError;
// if constructor doesn't throw, we're connected
//EndPoint = GetEndPoint(Hostname, Port);
//Socket = new UdpClient(EndPoint);
EndPoint = new IPEndPoint(IPAddress.Any, 0);
Socket = new UdpClient(Hostname, Port);
OnConnected.Invoke();
StartRecv();
}
public UDPProtocol(int localPort)
{
this.localPort = localPort;
udpClient = new System.Net.Sockets.UdpClient(localPort);
udpClient.AllowNatTraversal(true);
this.serverIPEndPoint = new IPEndPoint(IPAddress.Parse(serverIP), serverPort);
}
/// <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);
}
private void InitClient()
{
_client = new System.Net.Sockets.UdpClient(11000);
_client.Connect(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 12000));
//_receiveClient = new System.Net.Sockets.UdpClient(11000);
receivingUdpClient = new System.Net.Sockets.UdpClient(12000);
}
public void Close()
{
if (udp != null)
{
udp.Close();
udp = null;
}
}
public UdpClient(int localPort)
{
//_client = new System.Net.Sockets.UdpClient(new IPEndPoint(IPAddress.Any, 48899))
_client = new System.Net.Sockets.UdpClient(localPort);
{
//EnableBroadcast = true,
//DontFragment = true,
};
}
public UDPClient(Int32 port, bool ignoreUnknown)
{
this.ignoreUnknown = ignoreUnknown;
this.rawClient = new System.Net.Sockets.UdpClient(port);
this.output = new BlockingCollection <Packet>();
this.running = true;
this.thread = new Thread(this.ListenThread);
this.thread.Start();
}
private void CreateUdpClient()
{
_udpClient = new UdpClient();
uint IOC_IN = 0x80000000;
uint IOC_VENDOR = 0x18000000;
uint SIO_UDP_CONNRESET = IOC_IN | IOC_VENDOR | 12;
_ = _udpClient.Client.IOControl((int)SIO_UDP_CONNRESET, new byte[] { Convert.ToByte(false) }, null);
}
/// <summary>
/// 初始化
/// </summary>
/// <param name="strLocalIP">本地IP</param>
/// <param name="localPort">本地端口</param>
/// <param name="remoteIP">服务器IP</param>
/// <param name="remotePort">服务器端口</param>
/// <param name="vModForm">接收数据修改显示事件</param>
/// <param name="vServerOnLine">修改服务器在线或否的事件</param>
public UdpClient(string strLocalIP, int localPort,
string remoteIP, int remotePort, int vWorkStation,
Action <IMsg> vModForm,
Action <string, Color> vServerOnLine
)
{
if (Ins != null)
{
throw new Exception("对象已经存在");
}
//g_m = em;
//FrmMain frmMain = g_m as FrmMain;
E_ModForm = vModForm;
E_ServerOnLine = vServerOnLine;
LocMsg = new MsgBase()
{
DaType = "BS",
LocalIP = strLocalIP,
LocalPort = localPort,
RemoteIP = remoteIP,
RemotePort = remotePort,
WorkStation = vWorkStation
};
Frame.Ins.FrmMsg = LocMsg;
this.localPort = localPort;
remoteEP = new IPEndPoint(IPAddress.Parse(remoteIP), remotePort);
lock (this)
{
try
{
udpSend = new System.Net.Sockets.UdpClient(localPort);
}
catch (Exception ex)
{
throw ex;
//MessageBox.Show("本地端口" + localPort.ToString() + "已被占用！", "提示", MessageBoxButtons.OK);
//if (frmMain.IsHandleCreated)
//{
// Environment.Exit(0);
//}
//return;
}
}
udpSendState = new UdpState
{
ipEndPoint = remoteEP,
udpClient = udpSend
};
udpReceiveState = new UdpState
{
ipEndPoint = remoteEP,
udpClient = udpSend
};
readCallback = new AsyncCallback(SendCallback);
receiveCallback = new AsyncCallback(ReceiveCallback);
}
//打开socket通信
private void btnConnect_Click(object sender, EventArgs e)
{
System.Net.IPAddress ipaddr = null;
if (!System.Net.IPAddress.TryParse(this.tbIP.Text, out ipaddr))
{
MessageBox.Show("请正确填写IP地址!");
return;
}
int iPort = 0;
if (!int.TryParse(this.tbPort.Text, out iPort) || iPort <= 0)
{
MessageBox.Show("请正确填写端口!");
return;
}
_ipaddrDes = new System.Net.IPEndPoint(ipaddr, iPort);
if (_udp != null)
{
_udp.Close();
_udp = null;
}
_udp = new UdpClient(_portListen);
try
{
_udp.Connect(_ipaddrDes);
}
catch (System.ObjectDisposedException)
{
MessageBox.Show("System.Net.Sockets.UdpClient 已关闭");
return;
}
catch (System.ArgumentOutOfRangeException)
{
MessageBox.Show("port 不在 System.Net.IPEndPoint.MinPort 和 System.Net.IPEndPoint.MaxPort 之间");
return;
}
catch (System.Net.Sockets.SocketException ex)
{
MessageBox.Show("试图访问套接字时发生错误:" + ex.Message);
return;
}
catch (Exception ex)
{
MessageBox.Show("未知类型错误:" + ex.Message);
return;
}
Program.SetAppSettingValue("DefaultIP", this.tbIP.Text);
Program.SetAppSettingValue("DefaultPortNo", this.tbPort.Text);
this.btnDisconnect.Enabled = true;
this.btnConnect.Enabled = false;
}
/// <summary>
/// broadcast a message to others
/// </summary>
/// <param name="msg"></param>
static public void Broadcast(string msg, int UDPPort)
{
var epGroup = new System.Net.IPEndPoint(System.Net.IPAddress.Parse("224.0.0.2"), UDPPort);
var buffer = System.Text.Encoding.UTF8.GetBytes(msg);
System.Net.Sockets.UdpClient UdpClient = new System.Net.Sockets.UdpClient(1019);
UdpClient.Send(buffer, buffer.Length, epGroup);
UdpClient.Close();
}
/// <summary>
/// broadcast a message to others
/// </summary>
/// <param name="msg"></param>
static public void Broadcast(string msg)
{
var epGroup = new System.Net.IPEndPoint(GroupIP, 1020);
var buffer = System.Text.Encoding.UTF8.GetBytes(msg);
UdpClient = new System.Net.Sockets.UdpClient(1019);
UdpClient.Send(buffer, buffer.Length, epGroup);
UdpClient.Close();
}
public UdpServer(int tcpPort, int updPort, string message)
{
_listenPort = updPort;
_groupAddresses = new IPEndPoint(IPAddress.Any, _listenPort);
_udpServer = new System.Net.Sockets.UdpClient(_listenPort);
_tcpPort = tcpPort;
_broadcastMessage = message;
_mainLoop = new Thread(UdpListen);
}
public async Task<IEnumerable<Server>> GetServers(
MasterServerRegion region = MasterServerRegion.All,
params MasterServerFilter[] masterServerFilters)
{
var servers = new List<Server>();
using (var client = new UdpClient(new IPEndPoint(IPAddress.Any, 0)))
{
client.Connect(_steamSteamIpAddress, _steamSteamPort);
string thisServer = null;
while (thisServer != FIRST_AND_LAST_SERVER)
{
var requestPacket = CreateRequestPacket(thisServer ?? FIRST_AND_LAST_SERVER, region, masterServerFilters);
await client.SendAsync(requestPacket, requestPacket.Length);
var response = await client.ReceiveAsync();
var responseData = response.Buffer.ToList();
for (int i = HEADER_BYTES_LENGTH; i < responseData.Count; i++)
{
var ip = string.Join(".", responseData.GetRange(i, 4).ToArray());
int port = responseData[i + 4] << 8 | responseData[i + 5];
thisServer = string.Format("{0}:{1}", ip, port);
if (thisServer != FIRST_AND_LAST_SERVER)
{
servers.Add(new Server(new IPEndPoint(IPAddress.Parse(ip), port)));
}
i += 5;
}
}
}
return servers;
}
static void Main(string[] args)
{
System.Net.Sockets.UdpClient sock = new System.Net.Sockets.UdpClient();
IPEndPoint iep = new IPEndPoint(IPAddress.Parse("129.241.187.44"), 20004);
Console.WriteLine("Enter message");
string userinput = Console.ReadLine();
byte[] data = Encoding.ASCII.GetBytes(userinput);
sock.Send(data, data.Length, iep);
sock.Close();
Console.WriteLine("Message sent.");
System.Net.Sockets.UdpClient server = new System.Net.Sockets.UdpClient(20004);
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
byte[] recvdata = new byte[1024];
recvdata = server.Receive(ref sender);
server.Close();
string stringData = Encoding.ASCII.GetString(recvdata, 0, recvdata.Length);
Console.WriteLine("Response from " + sender.Address + Environment.NewLine + "Message: " + stringData);
Console.ReadLine();
}