Socket服务器代码

public class SocketHost
{
private IDictionary<Socket, byte[]> socketClientSesson = new Dictionary<Socket, byte[]>();

public int Port { get; set; }

public void Start()
{
var socketThread = new Thread(() =>
{
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint iep = new IPEndPoint(IPAddress.Any, this.Port);

//绑定到通道上
socket.Bind(iep);

//侦听
socket.Listen(6);

//通过异步来处理
socket.BeginAccept(new AsyncCallback(Accept), socket);

});

socketThread.Start();

Console.WriteLine("服务器已启动");
}

private void Accept(IAsyncResult ia)
{
Socket socket = ia.AsyncState as Socket;
var client = socket.EndAccept(ia);

socket.BeginAccept(new AsyncCallback(Accept), socket);

byte[] buf = new byte[1024];
this.socketClientSesson.Add(client, buf);

try
{
client.BeginReceive(buf, 0, buf.Length, SocketFlags.None, new AsyncCallback(Receive), client);
string sessionId = client.Handle.ToString();
Console.WriteLine("客户端({0})已连接", sessionId);
}
catch (Exception ex)
{
Console.WriteLine("监听请求时出错：\r\n" + ex.ToString());
}
}

private void Receive(IAsyncResult ia)
{
var client = ia.AsyncState as Socket;

if (client == null || !this.socketClientSesson.ContainsKey(client))
{
return;
}

int count = client.EndReceive(ia);

byte[] buf = this.socketClientSesson[client];

if (count > 0)
{
try
{
client.BeginReceive(buf, 0, buf.Length, SocketFlags.None, new AsyncCallback(Receive), client);
string context = Encoding.UTF8.GetString(buf, 0, count);
Console.WriteLine("接收的数据为:", context);

this.Response(client, context);
}
catch (Exception ex)
{
Console.WriteLine("接收的数据出错:\r\n{0}", ex.ToString());
}
}
else
{
try
{
string sessionId = client.Handle.ToString();
client.Disconnect(true);
this.socketClientSesson.Remove(client);
Console.WriteLine("客户端({0})已断开", sessionId);
}
catch (Exception ex)
{
Console.WriteLine("客户端已断开出错" + ex.ToString());
}
}
}

private void Response(Socket sender, string context)
{
SocketRequest request = null;
JavaScriptSerializer jss = new JavaScriptSerializer();
request = jss.Deserialize(context, typeof(SocketRequest)) as SocketRequest;

if (request == null)
{
return;
}

var typeName = "SocketServer." + request.Method + "ResponseManager, SocketServer";
Console.WriteLine("反射类名为：" + typeName);

Type type = Type.GetType(typeName);
if (type == null)
{
return;
}

var manager = Activator.CreateInstance(type) as IResponseManager;
manager.Write(sender, this.socketClientSesson.Select(s=> s.Key).ToList(),

request.Param as IDictionary<string, object>);
}
}

异步接收Socket数据

#region 异步接收Socket数据
/// <summary>
/// 异步接收Socket数据
/// </summary>
/// <param name="socket"></param>
/// <returns></returns>
public static byte[] ReceiveData(Socket socket)
{
    ReceiveObject state = new ReceiveObject() { Client = socket };
    socket.BeginReceive(state.Buffer, 0, state.Buffer.Length, SocketFlags.None, new AsyncCallback(ReadCallback), state);
    state.ReceiveDone.WaitOne(1000 * 10); // 10秒超时
    byte[] result = state.Stream.ToArray();
    return result;
}
 
/// <summary>
/// 同步接收对象
/// </summary>
private class ReceiveObject
{
    public Socket Client;
    public byte[] Buffer = new byte[4096];
    public System.IO.MemoryStream Stream = new System.IO.MemoryStream();
    public System.Threading.ManualResetEvent ReceiveDone = new System.Threading.ManualResetEvent(false);
}
 
/// <summary>
/// read回调
/// </summary>
/// <param name="ar"></param>
private static void ReadCallback(IAsyncResult ar)
{
    ReceiveObject state = (ReceiveObject)ar.AsyncState;
    int bytesRead = state.Client.EndReceive(ar);
    if (bytesRead > 0)
    {
        try
        {
            state.Stream.Write(state.Buffer, 0, bytesRead);
            state.Client.BeginReceive(state.Buffer, 0, state.Buffer.Length, SocketFlags.None, new AsyncCallback(ReadCallback), state);
        }
        catch (Exception ex)
        {
            Log.Error(ex.Message);
            state.ReceiveDone.Set();
        }
    }
    else
    {
        state.ReceiveDone.Set();
    }
}
#endregion