Question

我在msdn上看到了我需要创建我的TCP服务器，但代码中缺少部分。

>Here's<文章和这里是代码：

// This server waits for a connection and then uses asynchronous operations to
// accept the connection with initial data sent from the client.

// Establish the local endpoint for the socket.

IPHostEntry ipHostInfo = Dns.GetHostEntry(Dns.GetHostName());
IPAddress ipAddress = ipHostInfo.AddressList[0];
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 11000);

// Create a TCP/IP socket.
Socket listener = new Socket(AddressFamily.InterNetwork,
    SocketType.Stream, ProtocolType.Tcp );

// Bind the socket to the local endpoint, and listen for incoming connections.
listener.Bind(localEndPoint);
listener.Listen(100);

while (true) 
{
    // Set the event to nonsignaled state.
    allDone.Reset();

    // Start an asynchronous socket to listen for connections and receive data from the client.
    Console.WriteLine("Waiting for a connection...");

    // Accept the connection and receive the first 10 bytes of data. 
    // BeginAccept() creates the accepted socket.
    int receivedDataSize = 10;
    listener.BeginAccept(null, receivedDataSize, new AsyncCallback(AcceptReceiveDataCallback), listener);

    // Wait until a connection is made and processed before continuing.
    allDone.WaitOne();
}
}



public static void AcceptReceiveDataCallback(IAsyncResult ar) 
{
// Get the socket that handles the client request.
Socket listener = (Socket) ar.AsyncState;

// End the operation and display the received data on the console.
byte[] Buffer;
int bytesTransferred;
Socket handler = listener.EndAccept(out Buffer, out bytesTransferred, ar);
string stringTransferred = Encoding.ASCII.GetString(Buffer, 0, bytesTransferred);

Console.WriteLine(stringTransferred);
Console.WriteLine("Size of data transferred is {0}", bytesTransferred);

// Create the state object for the asynchronous receive.
StateObject state = new StateObject();
state.workSocket = handler;
handler.BeginReceive( state.buffer, 0, StateObject.BufferSize, 0,
new AsyncCallback(ReadCallback), state);
}

“event allDone”缺失，如何制作一个类似的等待连接？

Answer 1

allDone是一个ManualResetEvent。

请参阅http://msdn.microsoft.com/en-us/library/system.threading.manualresetevent.aspx

-Oisin

Answer 2

ManualResetEvent类型与事件无关（例如控件上的Click事件）。他们碰巧在名字中都有“事件”这个词。

请参阅Asynchronous Server Socket Example。

异步服务器端TCP / IP

2 个答案: