Question

求指导!!!!C# socket 同一条数据接收多次 导致其他数据丢失

客户端从数据库里取出数据 转为字符串 向服务器发送，服务器接收。
比如取出18条 每次发送一条 循环 发送，可是服务器有的时候接收是正常，有的时候一条数据接收多次，导致其他数据丢失,但是接收的条数是相同的！(也就是接收的条数和发送的条数是相等的，就是有的时候同一条数据接收多次，其他数据就丢了！)
服务器接收代码：
internal void Listen()
{
Console.WriteLine("启动监听....");
//IPAddress addr = Dns.GetHostAddresses(Dns.GetHostName())[0];
IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Any, 2008);

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

serverSocket.Bind(ipEndPoint);
serverSocket.Listen(15);
serverSocket.BeginAccept(new AsyncCallback(AcceptCallBack), serverSocket);
Console.WriteLine("开始监听：");

}

private void AcceptCallBack(IAsyncResult ar)
{
Socket oldSocket = (Socket)ar.AsyncState;

clientSocket = oldSocket.EndAccept(ar);

clientSocket.BeginReceive(data, 0, data.Length, SocketFlags.None, new AsyncCallback(ReceiveMessage), clientSocket);

serverSocket.BeginAccept(new AsyncCallback(AcceptCallBack), serverSocket);

}

private void ReceiveMessage(IAsyncResult ar)
{
Socket client = (Socket)ar.AsyncState;

IPEndPoint ClientIp = client.RemoteEndPoint as IPEndPoint;
Console.WriteLine("客户端IP：" + ClientIp.Address + "__端口：" + ClientIp.Port);

int receiveDataLength = client.EndReceive(ar);

string str = System.Text.Encoding.UTF8.GetString(data);
}

Answer 1

学习，这产UDP的吧？
还是异步的。

追问

这是TCP，异步的！

追答

private void AcceptCallBack(IAsyncResult ar)
{
Socket oldSocket = (Socket)ar.AsyncState;

clientSocket = oldSocket.EndAccept(ar);

clientSocket.BeginReceive(data, 0, data.Length, SocketFlags.None, new AsyncCallback(ReceiveMessage), clientSocket);

serverSocket.BeginAccept(new AsyncCallback(AcceptCallBack), serverSocket);

}
这里为什么还要再执行一次：
serverSocket.BeginAccept(new AsyncCallback(AcceptCallBack), serverSocket);