//关闭连接进来的Socket
public void CloseClientSocket(UserTokenEventArgs userToken)
{
if (userToken != null)
{
if (userToken.Socket == null)
{
return;
}
try
{
if (this.customizeHander != null && !userToken.CurrentUserID.IsNullEmpty())
{
customizeHander.ClientClose(userToken, userToken.CurrentUserID);
}
EventHandler <UserTokenEventArgs> handler = OnClientDisconnect; // 如果订户事件将为空(null)
if ((handler != null) && userToken.Socket != null)
{
handler(this, userToken);//抛出连接断开事件
}
if (userToken.Socket.Connected)
{
userToken.Socket.Shutdown(SocketShutdown.Both);
}
userToken.Socket.Close();
userToken.Socket = null;
userToken.SetInit();
this.maxNumberAcceptedClients.Release();
lock (recvStackPool)
{
recvStackPool.Push(userToken.ReceiveSocketAsyncEventArgs); // 释放以使它们可以被其他客户端重新利用,总数不变
}
}
// 抛出客户处理已经被关闭
catch (ObjectDisposedException)
{
Console.WriteLine("关闭对象已经被释放");
}
catch (SocketException)
{
}
catch (Exception exception_debug)
{
Console.WriteLine("关闭Socket调试:" + exception_debug.ToString());
//throw exception_debug;
}
finally
{
if (connectedSocketsCount > 0) //减少连接到服务器的socket计数器
{
Interlocked.Decrement(ref connectedSocketsCount);
}
//this.UserDic.RemoveByValue(userToken);
if (!userToken.CurrentUserID.IsNullEmpty())
{
this.UserDic.Remove(userToken.CurrentUserID);
}
}
}
}
private void ProcessAcceptConnect(SocketAsyncEventArgs e) //真正处理连接进来的socket
{
if (e.LastOperation != SocketAsyncOperation.Accept) //检查上一次操作是否是Accept，不是就返回
{
return;
}
if (e.SocketError == SocketError.Success)
{
Socket sock = e.AcceptSocket;
if (sock != null && sock.Connected)
{
Interlocked.Increment(ref this.connectedSocketsCount);
SocketAsyncEventArgs tempAgrs = this.recvStackPool.Pop();
UserTokenEventArgs userToken = tempAgrs.UserToken as UserTokenEventArgs;
try
{
userToken.ConnectTime = DateTime.Now;
userToken.ActiveTime = DateTime.Now;
userToken.Socket = sock;
if (!userToken.Socket.ReceiveAsync(userToken.ReceiveSocketAsyncEventArgs))
{
this.ProcessReceive(userToken.ReceiveSocketAsyncEventArgs);
}
}
catch (Exception ex)
{
this.RaiseErrorEvent(userToken, ex);
}
this.StartAcceptRequset(e);
}
}
}
//抛出错误事件
private void RaiseErrorEvent(UserTokenEventArgs token, Exception exception)
{
if (OnClientError != null)
{
if (null != token)
{
OnClientError(token, new SocketServerErrorEventArgs(exception));//抛出客户端错误事件
}
else
{
OnClientError(null, new SocketServerErrorEventArgs(exception));//抛出服务器错误事件
}
}
}
/// <summary>
/// 这个方法当一个异步发送操作完成时被调用.
/// </summary>
private void ProcessSend(SocketAsyncEventArgs e)
{
UserTokenEventArgs userToken = (UserTokenEventArgs)e.UserToken;
// 回收SocketAsyncEventArgs以备再次被利用
//Interlocked.Add(ref sendTotalBytes, e.BytesTransferred); // 增加发送的字节总数
lock (sendStackPool)
{
sendStackPool.Push(userToken.SendSocketAsyncEventArgs);
}
// 清除UserToken对象引用
e.UserToken = null;
if (e.SocketError == SocketError.Success)
{
//发送完成后做清除，抛出事件等操作 这里暂时什么都不做
}
else
{
CloseClientSocket(userToken);
}
}
public event EventHandler <SocketServerErrorEventArgs> OnClientError; // 客户端错误事件
// public event EventHandler<AsyncSocketUserToken> OnDataSendCompleted; // 数据发送完成
#endregion
public SocketServer(int maxConnectionCount)
{
this.MaxConnectionCount = maxConnectionCount;
this.recvStackPool = new SocketAsyncEventArgsStackPool(maxConnectionCount);//初始化对象池
this.sendStackPool = new SocketAsyncEventArgsStackPool(maxConnectionCount);
this.UserDic = new ObjectManager <string, UserTokenEventArgs>();
UserTokenEventArgs userToken;
for (int i = 0; i <= maxConnectionCount; i++) //按照连接数建立读写对象
{
userToken = new UserTokenEventArgs(this.receiveBufferSize);
userToken.ReceiveSocketAsyncEventArgs.Completed += new EventHandler <SocketAsyncEventArgs>(IO_Completed);
userToken.SendSocketAsyncEventArgs.Completed += new EventHandler <SocketAsyncEventArgs>(IO_Completed);
recvStackPool.Push(userToken.ReceiveSocketAsyncEventArgs);//把userToken的SocketAsyncEventArgs装入对象池
sendStackPool.Push(userToken.SendSocketAsyncEventArgs);
}
maxNumberAcceptedClients = new Semaphore(maxConnectionCount, maxConnectionCount); // 初始信号量
tCheckClientHeartbeat = new Thread(CheckClientHeartbeat); //开启新线程检查心跳
tCheckClientHeartbeat.IsBackground = true;
tCheckClientHeartbeat.Start();
}
public void Send(string connectionId, byte[] buffer)
{
UserTokenEventArgs userToken = UserDic.Get(connectionId);
if (userToken == null || userToken.Socket == null)
{
return;
}
if (userToken.ClientType == ClientType.WebSocket)
{
buffer = WebSocketUtils.PackServerData(buffer);//或者使用DataFram
}
SocketAsyncEventArgs sendEventArgs = null;
lock (sendStackPool)
{
sendEventArgs = sendStackPool.Pop();
}
if (sendEventArgs != null && sendEventArgs.SocketError == SocketError.Success)
{
sendEventArgs.UserToken = userToken;
sendEventArgs.SetBuffer(buffer, 0, buffer.Length);//最后设置发送数据
try
{
//异步发送数据
//Array.Copy(buffer, 0, sendEventArgs.Buffer, 0, buffer.Length);//设置发送数据
bool willRaiseEvent = userToken.Socket.SendAsync(sendEventArgs);//采用异步发送才能处理sendStackPool
if (!willRaiseEvent)
{
ProcessSend(sendEventArgs);
}
}
catch (Exception ex)
{
RaiseErrorEvent(userToken, ex);
Console.WriteLine("Send调试" + ex.ToString());
}
}
}
private bool ProcessPacket(UserTokenEventArgs userToken)
{
if (userToken.ClientType != ClientType.WebSocket)//第一次进来握手操作
{
byte[] info = userToken.bufferManager.GetCopyBuffer();
WebSocketHandshake handshake = new WebSocketHandshake(info);
if (handshake.IsWebSocket)
{
userToken.Socket.Send(Encoding.UTF8.GetBytes(handshake.Response));
userToken.bufferManager.Reset();
userToken.ClientType = ClientType.WebSocket;
handshake = null;
return(true);
}
}
if (userToken.ClientType == ClientType.WebSocket)
{
int bodyLen = 0;
int informationType = -1;
#region 处理WebSocket
while (userToken.ResvBufferManager.Length > 6)
{
if (userToken.ResvBufferManager.Length % this.receiveBufferSize == 0) //客户端一次发送的数据大于服务端缓冲区
{
return(true);
}
if (userToken.ResvBufferManager.Length >= 1024 * 120)
{
this.RaiseErrorEvent(userToken, new Exception("单个包发送不能大于120K"));
return(false);
}
int clearCount = 0;
DataFrame dr = new DataFrame(userToken.ResvBufferManager.Buffer, ref clearCount);
if (dr.Header.OpCode == OpCode.Close)
{
this.RaiseErrorEvent(userToken, new Exception("用户主动断开"));
return(false);
}
if (dr.Header.OpCode == OpCode.Binary)
{
#region 正常解析为二进制
byte[] hasAnalyzeData = dr.BinaryContent;
bodyLen = BitConverter.ToInt32(hasAnalyzeData, 0); //包长
if (userToken.ResvBufferManager.Length >= bodyLen + clearCount) //包足够的情况
{
informationType = BitConverter.ToInt16(hasAnalyzeData, 4); //消息类型
if (informationType > Int16.MaxValue || informationType < 0 || bodyLen > this.maxPacketLength | userToken.ResvBufferManager.Length > this.maxPacketLength)
{
this.RaiseErrorEvent(userToken, new Exception("解析消息类型错误|包长度超过最大长度"));
return(false);
}
if (informationType == 998)
{
int userIdLen = hasAnalyzeData[6];
if (userIdLen > this.maxUserIdlength)
{
this.RaiseErrorEvent(userToken, new Exception("UserId长度过长"));
return(false);
}
string userId = Encoding.UTF8.GetString(BytesHelper.CopyArrayData(hasAnalyzeData, 7, this.maxUserIdlength)).Replace("\0", "");
string failCause = string.Empty;
if (this.customizeHander != null && !customizeHander.CheckLoginUser("ABC", userId, "", out failCause))
{
this.RaiseErrorEvent(userToken, new Exception(failCause));
return(false);
}
this.UserDic.Add(userId, userToken);//添加登录用户才可以发送
userToken.ConnectedId = userId;
userToken.SendBufferManager.WriteInt16((short)informationType);
userToken.SendBufferManager.WriteString0(failCause);
this.Send(userId, userToken.SendBufferManager.GetCopyBuffer());
Console.WriteLine(string.Format("用户{0}登录成功---" + DateTime.Now, userId));
userToken.ResvBufferManager.Reset();
userToken.SendBufferManager.Reset();
}
else
{
if (string.IsNullOrEmpty(userToken.ConnectedId))
{
this.RaiseErrorEvent(userToken, new Exception(string.Format("用户{0}未登录;InfomationType:{1}", userToken.UserSocket.RemoteEndPoint, informationType)));
return(false);
}
if (hasAnalyzeData.Length < bodyLen)
{
Console.WriteLine("***********************" + bodyLen);
userToken.ResvBufferManager.Clear(clearCount);
//return true;
}
byte[] content = BytesHelper.CopyArrayData(hasAnalyzeData, 6, hasAnalyzeData.Length - 6);
if (this.customizeHander != null)
{
customizeHander.HandleInformation(userToken, userToken.ConnectedId, informationType, content);
}
// Console.WriteLine(" FBL:" + userToken.bufferManager.Length + " BOdyLen:" + bodyLen + " HL:" + hasAnalyzeData.Length + " clearCount:" + clearCount);
userToken.ResvBufferManager.Clear(bodyLen + clearCount);
}
}
else
{
return(true);
}
#endregion
}
else
{
Console.WriteLine("OP:" + dr.Header.OpCode + "____出现此错误可能包长度不对");
userToken.ResvBufferManager.Reset(true);
return(true);
}
}
#endregion
}
if (userToken.ClientType == ClientType.DotNET)//继续处理其他平台
{
}
return(true);
}
/// <summary>
/// 异步接收操作完成时调用. 如果远程主机关闭连接Socket将关闭
/// </summary>
private void ProcessReceive(SocketAsyncEventArgs e)
{
UserTokenEventArgs userToken = e.UserToken as UserTokenEventArgs;
if (userToken == null || userToken.Socket == null)
{
return;
}
if (e.BytesTransferred > 0 && e.SocketError == SocketError.Success && userToken.Socket.Connected) // 检查远程主机是否关闭连接
{
Interlocked.Add(ref receiveTotalBytes, e.BytesTransferred); // 增加接收到的字节总数
userToken.ActiveTime = DateTime.Now; //重置活动时间
if (userToken.Socket.Available == 0) //判断所有需接收的数据是否已经完成
{
//从侦听者获取接收到的消息。
byte[] data = new byte[e.BytesTransferred];
Array.Copy(e.Buffer, e.Offset, data, 0, data.Length);//从e.Buffer块中复制数据出来，保证它可重用
userToken.bufferManager.WriteBuffer(data);
}
try
{
if (!this.ProcessPacket(userToken))//如果处理数据返回失败，则断开连接
{
CloseClientSocket(userToken);
}
else
{
EventHandler <UserTokenEventArgs> handler = OnClientRead;// 抛出接收到数据事件
if (handler != null)
{
handler(this, userToken);
}
// 继续接收数据
bool willRaiseEvent = userToken.Socket.ReceiveAsync(userToken.ReceiveSocketAsyncEventArgs); //投递接收请求
if (!willRaiseEvent)
{
ProcessReceive(userToken.ReceiveSocketAsyncEventArgs);
}
}
}
catch (ObjectDisposedException)
{
CloseClientSocket(userToken);
}
catch (SocketException socketException)
{
if (socketException.ErrorCode == (int)SocketError.ConnectionReset) //10054一个建立的连接被远程主机强行关闭
{
CloseClientSocket(userToken); //引发断开连接事件
}
else
{
RaiseErrorEvent(userToken, new Exception("在SocketAsyncEventArgs对象上执行异步接收数据操作时发生SocketException异常", socketException));
}
}
catch (Exception ex)
{
Console.WriteLine("ProcessReceive调试" + ex.ToString());
}
}
else
{
CloseClientSocket(userToken);
}
Console.WriteLine("已连接数：" + this.connectedSocketsCount + "__LoginUserDic数：" + UserDic.Count + "--接收Stack数：" + this.recvStackPool.Count + "--发送Stack数：" + this.sendStackPool.Count);
}