///
/// Socket连接,双向通信
///
public class SocketConnection
{
#region 构造函数
public SocketConnection(Socket socket, SocketServer server)
{
_socket = socket;
_server = server;
}
#endregion
public Socket ClientSocket { get { return _socket; } }
public bool IsCheck { get; set; }//该客户是否通过首次验证 否则无法进行后续操作
#region 私有成员
private readonly Socket _socket;
private bool _isRec = true;
private SocketServer _server = null;
private byte[] Tmp_byteArr = new byte[0];//缓存 多余 或者 不完整 的封包数据
private bool IsSocketConnected()
{
bool part1 = _socket.Poll(1000, SelectMode.SelectRead);
bool part2 = (_socket.Available == 0);
if (part1 && part2)
return false;
else
return true;
}
#endregion
#region 外部接口
///
/// 开始接受客户端消息
///
public void StartRecMsg()
{
try
{
byte[] container = new byte[1024 * 1024 * 2];
_socket.BeginReceive(container, 0, container.Length, SocketFlags.None, asyncResult =>
{
try
{
int length = _socket.EndReceive(asyncResult);
//马上进行下一轮接受，增加吞吐量
if (length > 0 && _isRec && IsSocketConnected())
StartRecMsg();
if (length > 0)
{
byte[] recBytes = new byte[length];
Array.Copy(container, 0, recBytes, 0, length);
ParMsg(recBytes);
////处理消息 这里我把他取消了 放到了下面消息解析里面触发 当解析出完整数据时再触发 这样订阅事件的地方不用在做处理
//HandleRecMsg?.Invoke(recBytes, this, _server);
}
else
Close();
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
Close();
}
}, null);
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
Close();
}
}
void ParMsg(byte[] arr)
{
List result = new List();//之后所有的操作数据都保存在这 list方便点
if (Tmp_byteArr.Length > 0)//判断之前是否有保存多余数据
{
result.AddRange(Tmp_byteArr);
}
result.AddRange(arr);
if (result.Count <= 4)//前4个字节代表包长 如果不够则表示包不完整 保存起来
{
Tmp_byteArr = result.ToArray();
return;
}
int DataLength = BitConverter.ToInt32(Common.SubByte(result.ToArray(), 0, 4), 0);//包长 但不含这个包长本身
if (DataLength == result.Count - 4)//如果相等 则刚好是一个完整的包
{
MsgBody msg = new MsgBody(result.ToArray());
//处理消息
HandleRecMsg?.Invoke(msg, this, _server);
return;
}
if (DataLength > result.Count - 4)//如果包长 大于实际消息长度 说明包不完整 则保存至下次使用
{
Tmp_byteArr = result.ToArray();
return;
}
if (DataLength < result.Count - 4)//如果包长 小于实际消息长度 说明存在了粘包 要把多余的内容递归使用
{
MsgBody msg = new MsgBody(result.Take(DataLength).ToArray());
//处理消息
HandleRecMsg?.Invoke(msg, this, _server);
ParMsg(result.Skip(DataLength).ToArray());
}
}
///
/// 发送数据
///
/// 数据字节
public void Send(byte[] bytes)
{
try
{
_socket.BeginSend(bytes, 0, bytes.Length, SocketFlags.None, asyncResult =>
{
try
{
int length = _socket.EndSend(asyncResult);
HandleSendMsg?.Invoke(bytes, this, _server);
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
}
}, null);
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
}
}
///
/// 发送字符串（默认使用UTF-8编码）
///
/// 字符串
public void Send(string msgStr)
{
Send(Encoding.UTF8.GetBytes(msgStr));
}
///
/// 发送字符串（使用自定义编码）
///
/// 字符串消息
/// 使用的编码
public void Send(string msgStr, Encoding encoding)
{
Send(encoding.GetBytes(msgStr));
}
///
/// 传入自定义属性
///
public object Property { get; set; }
///
/// 关闭当前连接
///
public void Close()
{
try
{
_isRec = false;
_socket.Disconnect(false);
_server.ClientList.Remove(this);
HandleClientClose?.Invoke(this, _server);
_socket.Close();
_socket.Dispose();
GC.Collect();
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
}
}
#endregion
#region 事件处理
///
/// 客户端连接接受新的消息后调用
///
public Action HandleRecMsg { get; set; }
///
/// 客户端连接发送消息后回调
///
public Action HandleSendMsg { get; set; }
///
/// 客户端连接关闭后回调
///
public Action HandleClientClose { get; set; }
///
/// 异常处理程序
///
public Action HandleException { get; set; }
#endregion
}
///
/// Socket服务端
///
public class SocketServer
{
#region 构造函数
///
/// 构造函数
///
/// 监听的IP地址
/// 监听的端口
public SocketServer(string ip, int port)
{
_ip = ip;
_port = port;
}
///
/// 构造函数,监听IP地址默认为本机0.0.0.0
///
/// 监听的端口
public SocketServer(int port)
{
_ip = "0.0.0.0";
_port = port;
}
#endregion
#region 内部成员
private Socket _socket = null;
private string _ip = "";
private int _port = 0;
private bool _isListen = true;
private void StartListen()
{
try
{
_socket.BeginAccept(asyncResult =>
{
try
{
Socket newSocket = _socket.EndAccept(asyncResult);
//马上进行下一轮监听,增加吞吐量
if (_isListen)
StartListen();
SocketConnection newClient = new SocketConnection(newSocket, this)
{
HandleRecMsg = HandleRecMsg == null ? null : new Action(HandleRecMsg),
HandleClientClose = HandleClientClose == null ? null : new Action(HandleClientClose),
HandleSendMsg = HandleSendMsg == null ? null : new Action(HandleSendMsg),
HandleException = HandleException == null ? null : new Action(HandleException)
};
newClient.StartRecMsg();
ClientList.AddLast(newClient);
HandleNewClientConnected?.Invoke(this, newClient);
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
}
}, null);
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
}
}
#endregion
#region 外部接口
///
/// 开始服务，监听客户端
///
public void StartServer()
{
try
{
//实例化套接字（ip4寻址协议，流式传输，TCP协议）
_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//创建ip对象
IPAddress address = IPAddress.Parse(_ip);
//创建网络节点对象包含ip和port
IPEndPoint endpoint = new IPEndPoint(address, _port);
//将 监听套接字绑定到 对应的IP和端口
_socket.Bind(endpoint);
//设置监听队列长度为Int32最大值(同时能够处理连接请求数量)
_socket.Listen(int.MaxValue);
//开始监听客户端
StartListen();
HandleServerStarted?.Invoke(this);
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
}
}
///
/// 所有连接的客户端列表
///
public LinkedList ClientList { get; set; } = new LinkedList();
///
/// 关闭指定客户端连接
///
/// 指定的客户端连接
public void CloseClient(SocketConnection theClient)
{
theClient.Close();
}
#endregion
#region 公共事件
///
/// 异常处理程序
///
public Action HandleException { get; set; }
#endregion
#region 服务端事件
///
/// 服务启动后执行
///
public Action HandleServerStarted { get; set; }
///
/// 当新客户端连接后执行
///
public Action HandleNewClientConnected { get; set; }
///
/// 服务端关闭客户端后执行
///
public Action HandleCloseClient { get; set; }
#endregion
#region 客户端连接事件
///
/// 客户端连接接受新的消息后调用
///
public Action HandleRecMsg { get; set; }
///
/// 客户端连接发送消息后回调
///
public Action HandleSendMsg { get; set; }
///
/// 客户端连接关闭后回调
///
public Action HandleClientClose { get; set; }
#endregion
}
public class MsgBody
{
public MsgBody()
{
}
public MsgBody(string str)
{
this.BodyData = str;
}
public MsgBody(byte[] b)
{
this.Source = b;
SetValues();
}
///
/// 包长
///
public int DataLength;
public byte[] DataLength_Byte;
///
/// 包长
///
public int DataLength_2;
public byte[] DataLength_2_Byte;
///
/// 命令字 用来标记消息类型
///
public int Cmd;
public byte[] Cmd_Byte;
///
/// 发生的文本内容
///
public string BodyData;
public byte[] BodyData_Byte;
public byte End = 0;
public byte[] Source;
///
/// 数据组合为byte数组
///
///
/// 数据解析
///
public void SetValues()
{
try
{
DataLength_Byte = Common.SubByte(Source, 0, 4);
DataLength_2_Byte = Common.SubByte(Source, 4, 4);
Cmd_Byte = Common.SubByte(Source, 8, 4);
BodyData_Byte = Common.SubByte(Source, 12, Source.Length - 13);
End = Common.SubByte(Source, Source.Length - 2, 1)[0];
DataLength = BitConverter.ToInt32(DataLength_Byte, 0);
DataLength_2 = BitConverter.ToInt32(DataLength_2_Byte, 0);
Cmd = BitConverter.ToInt32(Cmd_Byte, 0);
BodyData = Encoding.UTF8.GetString(BodyData_Byte);
}
catch (Exception ex)
{
throw;
}
}
}