C＃或VB.NET中的任何示例设计代码？
在.NET中寻找UDP管道示例
我下载了 简单的UDP代理/管道0.4.1 作者Luigi Auriemma
哪个是C ++ ..
它工作得很完美..但我想在.NET中实现自己的实现..所以我可以直接嗅探数据包。
答案 0 :(得分：3)
修正了这里的解决方案，如果有人想了解我是如何修复它的..请注意这可能是所有谷歌上唯一的UDP代理，如果你偶然发现这个...用C＃编码..很容易移植到VB.NET与在线.NET转换器
很高兴这段代码有效;）
当然它效率不高，因为它不使用事件..比如ReceiveAsync / EndReceive。
只有不使用Aysnchronize事件才会失败..是你在工作代码下面看到的......将不得不陷入无限循环..它会烧掉你的CPU周期......很容易用Thread.Sleep修复（ 10）..（不要设置为高或你会有udp滞后）
using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Sockets;
using System.Net;
namespace UdpProxy
{
class Program
{
public static IPEndPoint m_listenEp = null;
public static EndPoint m_connectedClientEp = null;
public static IPEndPoint m_sendEp = null;
public static Socket m_UdpListenSocket = null;
public static Socket m_UdpSendSocket = null;
static void Main(string[] args)
{
// Creates Listener UDP Server
m_listenEp = new IPEndPoint(IPAddress.Any, 7900);
m_UdpListenSocket = new Socket(m_listenEp.Address.AddressFamily, SocketType.Dgram, ProtocolType.Udp);
m_UdpListenSocket.Bind(m_listenEp);
//Connect to zone IP EndPoint
m_sendEp = new System.Net.IPEndPoint(IPAddress.Parse("REMOTE_IP_GOES_HERE"), 7900);
m_connectedClientEp = new System.Net.IPEndPoint(IPAddress.Any, 7900);
byte[] data = new byte[1024];
while (true)
{
if (m_UdpListenSocket.Available > 0)
{
int size = m_UdpListenSocket.ReceiveFrom(data, ref m_connectedClientEp); //client to listener
if (m_UdpSendSocket == null)
{
// Connect to UDP Game Server.
m_UdpSendSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
}
m_UdpSendSocket.SendTo(data, size, SocketFlags.None, m_sendEp); //listener to server.
}
if (m_UdpSendSocket != null && m_UdpSendSocket.Available > 0)
{
int size = m_UdpSendSocket.Receive(data); //server to client.
m_UdpListenSocket.SendTo(data, size, SocketFlags.None, m_connectedClientEp); //listner
}
}
// Wait for any key to terminate application
Console.ReadKey();
}
}
}
当我启动一个新的UDP代理项目时，我总是回头看这个答案，上面的代码与某些UDP服务器失去连接有问题，（在无连接协议上）我不知道它是怎么回事但我使用UDPClient而不是套接字来修复它
这是一个不同的变体 TCP或UDP重定向器/ UDP代理/ UDP管道/ TCP代理/ TCP管道
我创建了许多不同型号的UDP代理连接保镖，它们似乎都使用标准套接字类松散连接，但是使用UDPClient类这个问题完全消失了。
UDP代理只有25行代码，但功耗和稳定性不在图表中
下面是如何在TCP和UDP中执行此操作的示例
C＃以下代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Diagnostics;
using System.Net;
using System.Threading;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
string Address= "*PUT IP ADDRESS HERE WHERE UDP SERVER IS*";
int UDPPort = *PUT UDP SERVER PORT HERE*;
UdpRedirect _UdpRedirect = new UdpRedirect() { _address = Address, _Port = UDPPort};
Thread _Thread = new Thread(_UdpRedirect.Connect);
_Thread.Name = "UDP";
_Thread.Start();
int TCPPort = *PUT TCP PORT HERE FOR TCP PROXY*;
TcpRedirect _TcpRedirect = new TcpRedirect(Address, TCPPort);
}
}
class UdpRedirect
{
public string _address;
public int _Port;
public UdpRedirect()
{
}
public void Connect()
{
UdpClient _UdpClient = new UdpClient(_Port);
int? LocalPort = null;
while (true)
{
IPEndPoint _IPEndPoint = null;
byte[] _bytes = _UdpClient.Receive(ref _IPEndPoint);
if (LocalPort == null) LocalPort = _IPEndPoint.Port;
bool Local = IPAddress.IsLoopback(_IPEndPoint.Address);
string AddressToSend = null;
int PortToSend = 0;
if (Local)
{
AddressToSend = _address;
PortToSend = _Port;
}
else
{
AddressToSend = "127.0.0.1";
PortToSend = LocalPort.Value;
}
_UdpClient.Send(_bytes, _bytes.Length, AddressToSend, PortToSend);
}
}
}
class TcpRedirect
{
public TcpRedirect(string _address, int _Port)
{
TcpListener _TcpListener = new TcpListener(IPAddress.Any, _Port);
_TcpListener.Start();
int i = 0;
while (true)
{
i++;
TcpClient _LocalSocket = _TcpListener.AcceptTcpClient();
NetworkStream _NetworkStreamLocal = _LocalSocket.GetStream();
TcpClient _RemoteSocket = new TcpClient(_address, _Port);
NetworkStream _NetworkStreamRemote = _RemoteSocket.GetStream();
Console.WriteLine("\n<<<<<<<<<connected>>>>>>>>>>>>>");
Client _RemoteClient = new Client("remote" + i)
{
_SendingNetworkStream = _NetworkStreamLocal,
_ListenNetworkStream = _NetworkStreamRemote,
_ListenSocket = _RemoteSocket
};
Client _LocalClient = new Client("local" + i)
{
_SendingNetworkStream = _NetworkStreamRemote,
_ListenNetworkStream = _NetworkStreamLocal,
_ListenSocket = _LocalSocket
};
}
}
public class Client
{
public TcpClient _ListenSocket;
public NetworkStream _SendingNetworkStream;
public NetworkStream _ListenNetworkStream;
Thread _Thread;
public Client(string Name)
{
_Thread = new Thread(new ThreadStart(ThreadStartHander));
_Thread.Name = Name;
_Thread.Start();
}
public void ThreadStartHander()
{
Byte[] data = new byte[99999];
while (true)
{
if (_ListenSocket.Available > 0)
{
int _bytesReaded = _ListenNetworkStream.Read(data, 0, _ListenSocket.Available);
_SendingNetworkStream.Write(data, 0, _bytesReaded);
Console.WriteLine("(((((((" + _bytesReaded + "))))))))))" + _Thread.Name + "\n" + ASCIIEncoding.ASCII.GetString(data, 0, _bytesReaded).Replace((char)7, '?'));
}
Thread.Sleep(10);
}
}
}
}
}
VB.NET 以下代码
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.Net.Sockets
Imports System.Diagnostics
Imports System.Net
Imports System.Threading
Namespace ConsoleApplication1
Class Program
Private Shared Sub Main(args As String())
Dim Address As String = "*PUT IP ADDRESS HERE WHERE UDP SERVER IS*"
Dim UDPPort As Integer = *PUT UDP SERVER PORT HERE*
Dim _UdpRedirect As New UdpRedirect() With { _
Key ._address = Address, _
Key ._Port = UDPPort _
}
Dim _Thread As New Thread(AddressOf _UdpRedirect.Connect)
_Thread.Name = "UDP"
_Thread.Start()
Dim TCPPort As Integer = *PUT TCP SERVER PORT HERE*
Dim _TcpRedirect As New TcpRedirect(Address, TCPPort)
End Sub
End Class
Class UdpRedirect
Public _address As String
Public _Port As Integer
Public Sub New()
End Sub
Public Sub Connect()
Dim _UdpClient As New UdpClient(_Port)
Dim LocalPort As System.Nullable(Of Integer) = Nothing
While True
Dim _IPEndPoint As IPEndPoint = Nothing
Dim _bytes As Byte() = _UdpClient.Receive(_IPEndPoint)
If LocalPort Is Nothing Then
LocalPort = _IPEndPoint.Port
End If
Dim Local As Boolean = IPAddress.IsLoopback(_IPEndPoint.Address)
Dim AddressToSend As String = Nothing
Dim PortToSend As Integer = 0
If Local Then
AddressToSend = _address
PortToSend = _Port
Else
AddressToSend = "127.0.0.1"
PortToSend = LocalPort.Value
End If
_UdpClient.Send(_bytes, _bytes.Length, AddressToSend, PortToSend)
End While
End Sub
End Class
Class TcpRedirect
Public Sub New(_address As String, _Port As Integer)
Dim _TcpListener As New TcpListener(IPAddress.Any, _Port)
_TcpListener.Start()
Dim i As Integer = 0
While True
i += 1
Dim _LocalSocket As TcpClient = _TcpListener.AcceptTcpClient()
Dim _NetworkStreamLocal As NetworkStream = _LocalSocket.GetStream()
Dim _RemoteSocket As New TcpClient(_address, _Port)
Dim _NetworkStreamRemote As NetworkStream = _RemoteSocket.GetStream()
Console.WriteLine(vbLf & "<<<<<<<<<connected>>>>>>>>>>>>>")
Dim _RemoteClient As New Client("remote" + i) With { _
Key ._SendingNetworkStream = _NetworkStreamLocal, _
Key ._ListenNetworkStream = _NetworkStreamRemote, _
Key ._ListenSocket = _RemoteSocket _
}
Dim _LocalClient As New Client("local" + i) With { _
Key ._SendingNetworkStream = _NetworkStreamRemote, _
Key ._ListenNetworkStream = _NetworkStreamLocal, _
Key ._ListenSocket = _LocalSocket _
}
End While
End Sub
Public Class Client
Public _ListenSocket As TcpClient
Public _SendingNetworkStream As NetworkStream
Public _ListenNetworkStream As NetworkStream
Private _Thread As Thread
Public Sub New(Name As String)
_Thread = New Thread(New ThreadStart(AddressOf ThreadStartHander))
_Thread.Name = Name
_Thread.Start()
End Sub
Public Sub ThreadStartHander()
Dim data As [Byte]() = New Byte(99998) {}
While True
If _ListenSocket.Available > 0 Then
Dim _bytesReaded As Integer = _ListenNetworkStream.Read(data, 0, _ListenSocket.Available)
_SendingNetworkStream.Write(data, 0, _bytesReaded)
Console.WriteLine("(((((((" + _bytesReaded + "))))))))))" + _Thread.Name + vbLf + ASCIIEncoding.ASCII.GetString(data, 0, _bytesReaded).Replace(CChar(7), "?"C))
End If
Thread.Sleep(10)
End While
End Sub
End Class
End Class
End Namespace