[英]Client And Server Socket Connection using C#
我創建了兩個項目,一個與客戶端,另一個與服務器,以在兩個項目之間交換文本;我在同一台計算機上運行這些exe。 我的客戶端連接代碼連接看起來:
using (SocketClient sa = new SocketClient(host, port))
{
sa.Connect();
Console.WriteLine(sa.SendReceive("Message #" + i.ToString()));
}
sa.Disconnect();
而socketclient是我的類,其中包含以下方法和構造函數:
internal SocketClient(String hostName, Int32 port)
{
IPHostEntry host = Dns.GetHostEntry(hostName);
IPAddress[] addressList = host.AddressList;
this.hostEndPoint = new IPEndPoint(addressList[addressList.Length - 1], port);
this.clientSocket = new Socket(this.hostEndPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
}
internal void Connect()
{
SocketAsyncEventArgs connectArgs = new SocketAsyncEventArgs();
connectArgs.UserToken = this.clientSocket;
connectArgs.RemoteEndPoint = this.hostEndPoint;
connectArgs.Completed += new EventHandler<SocketAsyncEventArgs>(OnConnect);
clientSocket.ConnectAsync(connectArgs);
autoConnectEvent.WaitOne();
SocketError errorCode = connectArgs.SocketError;
if (errorCode != SocketError.Success)
{
throw new SocketException((Int32)errorCode);
}
}
internal void Disconnect()
{
clientSocket.Disconnect(false);
}
private void OnConnect(object sender, SocketAsyncEventArgs e)
{
autoConnectEvent.Set();
this.connected = (e.SocketError == SocketError.Success);
}
internal String SendReceive(String message)
{
if (this.connected)
{
Byte[] sendBuffer = Encoding.ASCII.GetBytes(message);
SocketAsyncEventArgs completeArgs = new SocketAsyncEventArgs();
completeArgs.SetBuffer(sendBuffer, 0, sendBuffer.Length);
completeArgs.UserToken = this.clientSocket;
completeArgs.RemoteEndPoint = this.hostEndPoint;
completeArgs.Completed += new EventHandler<SocketAsyncEventArgs>(OnSend);
clientSocket.SendAsync(completeArgs);
AutoResetEvent.WaitAll(autoSendReceiveEvents);
return Encoding.ASCII.GetString(completeArgs.Buffer, completeArgs.Offset,completeArgs.BytesTransferred);
}
else
{
throw new SocketException((Int32)SocketError.NotConnected);
}
}
而在服務器端,代碼如下所示:
SocketListener sl = new SocketListener(numConnections, bufferSize);
sl.Start(port);
Console.WriteLine("Server listening on port {0}.
Press any key to terminate the server process...", port);
Console.Read();
sl.Stop();
套接字偵聽器是我的類,其中包含以下方法和構造函數:
internal SocketListener(Int32 numConnections, Int32 bufferSize)
{
this.numConnectedSockets = 0;
this.numConnections = numConnections;
this.bufferSize = bufferSize;
this.readWritePool = new SocketAsyncEventArgsPool(numConnections);
this.semaphoreAcceptedClients = new Semaphore(numConnections, numConnections);
for (Int32 i = 0; i < this.numConnections; i++)
{
SocketAsyncEventArgs readWriteEventArg = new SocketAsyncEventArgs();
readWriteEventArg.Completed += new EventHandler<SocketAsyncEventArgs> (OnIOCompleted);
readWriteEventArg.SetBuffer(new Byte[this.bufferSize], 0, this.bufferSize);
this.readWritePool.Push(readWriteEventArg);
}
}
internal void Start(Int32 port)
{
IPAddress[] addressList = Dns.GetHostEntry(Environment.MachineName).AddressList;
IPEndPoint localEndPoint = new IPEndPoint(addressList[addressList.Length - 1], port);
this.listenSocket = new Socket(localEndPoint.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
this.listenSocket.ReceiveBufferSize = this.bufferSize;
this.listenSocket.SendBufferSize = this.bufferSize;
if (localEndPoint.AddressFamily == AddressFamily.InterNetworkV6)
{
this.listenSocket.SetSocketOption(SocketOptionLevel.IPv6, (SocketOptionName)27, false);
this.listenSocket.Bind(new IPEndPoint(IPAddress.IPv6Any, localEndPoint.Port));
}
else
{
this.listenSocket.Bind(localEndPoint);
}
this.listenSocket.Listen(this.numConnections);
this.StartAccept(null);
mutex.WaitOne();
}
我已經對路由器進行端口轉發,因為服務器端exe沒有端口轉發就無法監聽。
在家里的同一台PC和同一端口上發送和接收都可以正常工作。
當我嘗試在我的辦公計算機上運行這兩個代碼exe時,它將在以下行引發異常:
任何人都可以指導我什么問題以及如何解決嗎?
謝謝
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