TCP异步套接字抛出10057 [英] TCP async sockets throwing 10057

问题描述

我已经写了下面的code：

I've written the following code:

    public static void BeginListen( int port )
    {
        IPAddress address = IPAddress.Any;
        IPEndPoint endPoint = new IPEndPoint( address, port );

        m_Socket = new Socket( AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp );

        m_Socket.Bind( endPoint );
        m_Socket.Listen( 8 );

        m_Socket.BeginAccept( new AsyncCallback( Accept ), null );
    }

    private static void Accept( IAsyncResult result )
    {
        Socket client = m_Socket.EndAccept( result );

        SocketData state = new SocketData( client, 32767 );

        m_Socket.BeginReceive( state.Buffer, 0, state.Buffer.Length, SocketFlags.None,
            new AsyncCallback( Receive ), state );

        m_Socket.BeginAccept( new AsyncCallback( Accept ), null );
    }

当一个客户端试图连接，则会引发错误的BeginReceive调用accept（）方法：

When a client attempts to connect, an error is thrown at the BeginReceive call in Accept():

一个请求发送或接收数据是不允许因为套接字未连接，并且没有提供地址（使用一个sendto调用发送数据报套接字时）

A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied

是什么造成的？我只是似乎无法把它。

What's causing this? I just can't seem to place it.

感谢

推荐答案

您需要调用 BeginReceive 在插槽按 EndAccept （在你的情况客户端），而不是服务器插槽（在你的情况 m_Socket ）：

You need to call BeginReceive on the Socket returned by EndAccept (in your case client), not the server Socket (in your case m_Socket):

Socket client = m_Socket.EndAccept( result );
// ...
client.BeginAccept( new AsyncCallback( Accept ), null );

这里有一个例子，它说明了 MSDN 的正确用法。

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