using System;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Runtime.InteropServices;
using System.IO;
namespace Common.TcpLib
{
/// <summary>
/// WIOCP Socket处理服务器端
/// </summary>
public class TcpServerWIOCP : Common.TcpLib.ITcpServer
{
private Socket _listener;
private string _listenerIp = "127.0.0.1";
private int _port;
private int _backlog = 100;
private int _bufferSize = 1024;
private Thread _thread = null;
private bool _disposed;
private bool _debug = false;
private ManualResetEvent allDone = new ManualResetEvent(false);
private ManualResetEvent sendDone = new ManualResetEvent(false);
private object _stopLock = new object();
private bool _sotpMessage = false;
private List<Socket> _cs = new List<Socket>();
#region define delegates
/// <summary>
/// 服务器绑定后处理事件
/// </summary>
public _Bgz_OnBindEventDelegate FOnBindEventDelegate;
/// <summary>
/// Accept后处理事件
/// </summary>
public _Bgz_OnAcceptEventDelegate FOnAcceptEventDelegate;
/// <summary>
/// 接收到客户端数据后处理事件
/// </summary>
public _Bgz_OnReceiveBeginEventDelegate FOnReceiveBeginEventDelegate;
public _Bgz_OnReceiveingEventDelegate FOnReceiveingEventDelegate;
public _Bgz_OnReceiveEndEventDelegate FOnReceiveEndEventDelegate;
/// <summary>
/// 报错信息处理
/// </summary>
public _Bgz_OnErrorEventDelegate FOnErrorEventDelegate;
/// <summary>
/// 断掉与客户机的连接前处理事件
/// </summary>
public _Bgz_OnDropConnectEventDelegate FOnDropConnectEventDelegate;
#endregion
#region Event
private void OnBindEvent(_Bgz_ConnectionState state)
{
if (FOnBindEventDelegate != null) FOnBindEventDelegate(state);
}
private void OnAcceptEvent(_Bgz_ConnectionState state)
{
if (FOnAcceptEventDelegate != null) FOnAcceptEventDelegate(state);
}
private void OnReceiveBeginEvent(_Bgz_ConnectionState state)
{
if (FOnReceiveBeginEventDelegate != null) FOnReceiveBeginEventDelegate(state);
}
private void OnReceiveingEvent(_Bgz_ConnectionState state)
{
if (FOnReceiveingEventDelegate != null) FOnReceiveingEventDelegate(state);
}
private void OnReceiveEndEvent(_Bgz_ConnectionState state)
{
if (FOnReceiveEndEventDelegate != null) FOnReceiveEndEventDelegate(state);
}
private void OnErrorEvent(ErrorType errortype, string msg, _Bgz_ConnectionState state)
{
if (FOnErrorEventDelegate != null) FOnErrorEventDelegate(errortype, msg, state);
}
private void OnDropConnectEvent(_Bgz_ConnectionState state)
{
if (FOnDropConnectEventDelegate != null) FOnDropConnectEventDelegate(state);
}
#endregion
#region Constructor and Destructor
public TcpServerWIOCP(int port)
{
_port = port;
}
public TcpServerWIOCP(int port, int backlog)
{
_port = port;
_backlog = backlog;
}
public TcpServerWIOCP(int port, int backlog, int buffterSize)
{
_port = port;
_backlog = backlog;
_bufferSize = buffterSize;
}
public TcpServerWIOCP(string listenerIp, int port)
{
_listenerIp = listenerIp;
_port = port;
}
public TcpServerWIOCP(string listenerIp, int port, int backlog)
{
_listenerIp = listenerIp;
_port = port;
_backlog = backlog;
}
public TcpServerWIOCP(string listenerIp, int port, int backlog, int buffterSize)
{
_listenerIp = listenerIp;
_port = port;
_backlog = backlog;
_bufferSize = buffterSize;
}
~TcpServerWIOCP()
{
if (!_disposed)
{
Stop();
}
}
#endregion
#region Private Methods
private void Dispose()
{
if (!_disposed)
{
Stop();
GC.Collect();
GC.WaitForPendingFinalizers();
this.FOnAcceptEventDelegate = null;
this.FOnBindEventDelegate = null;
this.FOnDropConnectEventDelegate = null;
this.FOnErrorEventDelegate = null;
this.FOnReceiveBeginEventDelegate = null;
this.FOnReceiveEndEventDelegate = null;
this.FOnReceiveingEventDelegate = null;
_disposed = true;
}
}
private void StartListening(object obj)
{
try
{
bool optionValue = (bool)obj;
_listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
#region 处理Socket端口复用
_listener.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, optionValue);
#endregion
_listener.Bind(new IPEndPoint(IPAddress.Parse(_listenerIp), _port));
_listener.Listen(_backlog);
_Bgz_ConnectionState stx = new _Bgz_ConnectionState(_listener);
OnBindEvent(stx);
_sotpMessage = false;
_stopLock = new object();
while (true)
{
if (_listener == null)
{
lock (_stopLock)
{
if (!_sotpMessage)
{
OnErrorEvent(ErrorType.DisAccept, "服务器关闭了监听！", null);
_sotpMessage = true;
}
}
return;
}
allDone.Reset();
_listener.BeginAccept(new AsyncCallback(AcceptCallback), _listener);
allDone.WaitOne();
}
}
catch (Exception ex)
{
if (Debug)
{
OnErrorEvent(ErrorType.Catch, "Start Error！[Message]:\r\n" + ex.Message + "[StackTrace]:\r\n" + ex.StackTrace + "\r\n", null);
}
}
}
private void AcceptCallback(IAsyncResult ar)
{
Socket handler = null;
_Bgz_ConnectionState stx = new _Bgz_ConnectionState();
try
{
Socket listener = ar.AsyncState as Socket;
if (_listener == null)
{
lock (_stopLock)
{
if (!_sotpMessage)
{
OnErrorEvent(ErrorType.DisAccept, "服务器关闭了监听！", null);
_sotpMessage = true;
}
}
return;
}
handler = listener.EndAccept(ar);
_cs.Add(handler);
stx._conn = handler;
OnAcceptEvent(stx);
#region 处理Socket网络异常断开
uint dummy = 0;
byte[] inOptionValues = new byte[Marshal.SizeOf(dummy) * 3];
BitConverter.GetBytes((uint)1).CopyTo(inOptionValues, 0);
BitConverter.GetBytes((uint)50000).CopyTo(inOptionValues, Marshal.SizeOf(dummy));
BitConverter.GetBytes((uint)50000).CopyTo(inOptionValues, Marshal.SizeOf(dummy) * 2);
_listener.IOControl(IOControlCode.KeepAliveValues, inOptionValues, null);
#endregion
handler.BeginReceive(stx._buffer, 0, 0, 0, new AsyncCallback(ReadCallBack), handler);
}
catch (Exception ex)
{
DropConnection(stx);
if (Debug)
{
OnErrorEvent(ErrorType.Catch, "AcceptCallback Error！[Message]:\r\n" + ex.Message + "[StackTrace]:\r\n" + ex.StackTrace + "\r\n", null);
}
}
finally
{
allDone.Set();
}
}
private void DropConnection(_Bgz_ConnectionState stx)
{
try
{
lock (this)
{
if (_listener == null)
{
lock (_stopLock)
{
if (!_sotpMessage)
{
OnErrorEvent(ErrorType.DisAccept, "服务器关闭了监听！", null);
_sotpMessage = true;
}
}
return;
}
OnDropConnectEvent(stx);
if (_cs.Contains(stx._conn))
_cs.Remove(stx._conn);
if (stx._conn != null)
{
IPEndPoint info = (IPEndPoint)stx._conn.RemoteEndPoint;
string str = info.Address.ToString() + ":" + info.Port.ToString();
OnErrorEvent(ErrorType.DisAccept, "关闭了远程连接[" + str + "]！", null);
if (stx._conn.Connected)
stx._conn.Close();
}
}
}
catch (Exception ex)
{
if (Debug)
{
OnErrorEvent(ErrorType.Catch, "DropConnection Error！[Message]:\r\n" + ex.Message + "[StackTrace]:\r\n" + ex.StackTrace + "\r\n", null);
}
}
}
private void ReadCallBack(IAsyncResult ar)
{
Socket handler = null;
try
{
handler = (Socket)ar.AsyncState;
_Bgz_ConnectionState stx = new _Bgz_ConnectionState(handler);
if (this._listener == null)
{
lock (_stopLock)
{
if (!_sotpMessage)
{
OnErrorEvent(ErrorType.DisAccept, "服务器关闭了监听！", null);
_sotpMessage = true;
}
}
return;
}
if (handler == null) return;
handler.EndReceive(ar);
if (handler.Available == 0)
{
DropConnection(stx);
return;
}
try
{
lock (this)
{
OnReceiveBeginEvent(stx);
#region receive
stx._buffer = new byte[0];
stx._count = 0;
stx._dataStream.SetLength(0);
stx._dataStream.Position = 0;
if (stx._getonceall)
{
stx._buffer = new byte[handler.Available];
int ret = handler.Receive(stx._buffer, 0, stx._buffer.Length, SocketFlags.None);
if (ret > 0)
{
stx._dataStream.Write(stx._buffer, 0, stx._buffer.Length);
stx._count++;
OnReceiveingEvent(stx);
}
}
else
{
while (handler.Available > 0)
{
if (handler.Available > _bufferSize)
stx._buffer = new byte[_bufferSize];
else
stx._buffer = new byte[handler.Available];
int ret = handler.Receive(stx._buffer, 0, stx._buffer.Length, SocketFlags.None);
if (ret > 0)
{
stx._dataStream.Write(stx._buffer, 0, stx._buffer.Length);
stx._count++;
OnReceiveingEvent(stx);
}
}
}
#endregion
OnReceiveEndEvent(stx);
}
}
catch (Exception ex)
{
DropConnection(stx);
if (Debug)
{
OnErrorEvent(ErrorType.Catch, "ReadCallBack.1 Error！[Message]:\r\n" + ex.Message + "[StackTrace]:\r\n" + ex.StackTrace + "\r\n", stx);
}
}
if (handler == null) return;
if (handler.Connected)
handler.BeginReceive(stx._buffer, 0, 0, 0, new AsyncCallback(ReadCallBack), handler);
}
catch (Exception ex)
{
if (this._listener == null)
{
lock (_stopLock)
{
if (!_sotpMessage)
{
OnErrorEvent(ErrorType.DisAccept, "服务器关闭了监听！", null);
_sotpMessage = true;
}
}
return;
}
if (handler != null)
{
_Bgz_ConnectionState stx = new _Bgz_ConnectionState(handler);
DropConnection(stx);
}
if (Debug)
{
OnErrorEvent(ErrorType.Catch, "ReadCallBack.2 Error！[Message]:\r\n" + ex.Message + "[StackTrace]:\r\n" + ex.StackTrace + "\r\n", null);
}
}
}
private void SendCallback(IAsyncResult ar)
{
try
{
Socket client = (Socket)ar.AsyncState;
int bytesSent = client.EndSend(ar);
}
catch (Exception ex)
{
OnErrorEvent(ErrorType.Catch, "出错信息提示:\r\n" + ex.Message, null);
}
finally
{
sendDone.Set();
}
}
#endregion
#region Public Methods
public void Start()
{
Start(false);
}
public void Start(bool optionValue)
{
_thread = new Thread(new ParameterizedThreadStart(StartListening));
_thread.Name = "TcpServerIOCP.Listening";
_thread.Start(optionValue);
}
public void Send(byte[] msg)
{
try
{
foreach (Socket s in ClientSockets)
{
Send(s, msg);
}
}
catch (Exception ex)
{
if (Debug)
{
OnErrorEvent(ErrorType.Catch, "Send Error！[Message]:\r\n" + ex.Message + "[StackTrace]:\r\n" + ex.StackTrace + "\r\n", null);
}
}
}
public void Send(Socket ClientSocket, byte[] msg)
{
try
{
if (ClientSocket != null)
{
if (ClientSocket.Connected)
ClientSocket.Send(msg);
else
{
IPEndPoint info = (IPEndPoint)ClientSocket.RemoteEndPoint;
string str = info.Address.ToString() + ":" + info.Port.ToString();
OnErrorEvent(ErrorType.DisConnect, "客户端[" + str + "]的连接未建立，不能发送信息！", null);
ClientSocket.Close();
}
}
else
{
OnErrorEvent(ErrorType.DisAccept, "客户端的连接未建立，不能发送信息！", null);
}
}
catch (Exception ex)
{
if (Debug)
{
OnErrorEvent(ErrorType.Catch, "Send Error！[Message]:\r\n" + ex.Message + "[StackTrace]:\r\n" + ex.StackTrace + "\r\n", null);
}
}
}
public void SendAsync(Socket ClientSocket , byte[] msg)
{
try
{
if (ClientSocket.Connected == false)
{
throw (new Exception("没有连接客户端不可以发送信息!"));
}
byte[] buffer;
int count = msg.Length;
int cur = 0;
while (count > 0)
{
if (count > this._bufferSize)
buffer = new byte[this._bufferSize];
else
buffer = new byte[count];
for (int i = 0; i < buffer.Length; i++)
{
buffer[i] = msg[cur + i];
}
count -= buffer.Length;
cur += buffer.Length;
ClientSocket.BeginSend(buffer, 0, buffer.Length, 0, new AsyncCallback(SendCallback), ClientSocket);
sendDone.WaitOne();
}
}
catch (Exception ex)
{
if (Debug)
{
OnErrorEvent(ErrorType.Catch, "Send Error！[Message]:\r\n" + ex.Message + "[StackTrace]:\r\n" + ex.StackTrace + "\r\n", null);
}
}
}
public void SendAsync(Socket ClientSocket, Stream Astream)
{
try
{
if (ClientSocket.Connected == false)
{
throw (new Exception("没有连接客户端不可以发送信息!"));
}
byte[] buffer ;
long count = Astream.Length;
while (count > 0)
{
if (count > this._bufferSize)
buffer = new byte[this._bufferSize];
else
buffer = new byte[count];
Astream.Read(buffer, 0, buffer.Length);
count -= buffer.Length;
ClientSocket.BeginSend(buffer, 0, buffer.Length, 0, new AsyncCallback(SendCallback), ClientSocket);
sendDone.WaitOne();
}
}
catch (Exception ex)
{
if (Debug)
{
OnErrorEvent(ErrorType.Catch, "Send Error！[Message]:\r\n" + ex.Message + "[StackTrace]:\r\n" + ex.StackTrace + "\r\n", null);
}
}
}
public void Stop()
{
try
{
if (_listener == null)
{
lock (_stopLock)
{
if (!_sotpMessage)
{
OnErrorEvent(ErrorType.DisAccept, "服务器关闭了监听！", null);
_sotpMessage = true;
}
}
return;
}
if (_thread != null)
{
foreach (Socket s in _cs)
{
if (s != null)
if (s.Connected)
{
IPEndPoint info = (IPEndPoint)s.RemoteEndPoint;
string str = info.Address.ToString() + ":" + info.Port.ToString();
OnErrorEvent(ErrorType.DisAccept, "关闭了远程连接[" + str + "]！", null);
s.Close();
}
}
_cs.Clear();
_listener.Close();
_listener = null;
_thread.Join();
_thread = null;
}
}
catch (Exception ex)
{
OnErrorEvent(ErrorType.Catch, "出错信息提示:\r\n" + ex.Message, null);
}
}
#endregion
#region Property
/// <summary>
/// 获取挂起连接队列的最大长度
/// </summary>
public int BackLog
{
get
{
return _backlog;
}
}
public int BufferSize
{
get
{
return _bufferSize;
}
}
public Socket[] ClientSockets
{
get
{
Socket[] sockets = new Socket[this._cs.Count];
_cs.CopyTo(sockets);
return sockets;
}
}
public bool Debug
{
get
{
return _debug;
}
set
{
_debug = value;
}
}
#endregion
}
}