/// <summary>
/// 触发异常事件
/// </summary>
/// <param name="state"></param>
private void RaiseOtherException(TcpClientState state, string descrip)
{
if (OtherException != null)
{
OtherException(this, new AsyncEventArgs(descrip, state));
}
}
/// <summary>
/// 触发数据发送完毕的事件
/// </summary>
/// <param name="state"></param>
private void RaiseCompletedSend(TcpClientState state)
{
if (CompletedSend != null)
{
CompletedSend(this, new AsyncEventArgs(state));
}
}
/// <summary>
/// 触发网络错误事件
/// </summary>
/// <param name="state"></param>
private void RaiseNetError(TcpClientState state)
{
if (NetError != null)
{
NetError(this, new AsyncEventArgs(state));
}
}
/// <summary>
/// 触发发送数据前的事件
/// </summary>
/// <param name="state"></param>
private void RaisePrepareSend(TcpClientState state)
{
if (PrepareSend != null)
{
PrepareSend(this, new AsyncEventArgs(state));
}
}
private void RaiseDataReceived(TcpClientState state)
{
if (DataReceived != null)
{
DataReceived(this, new AsyncEventArgs(state));
}
}
/// <summary>
/// 触发客户端连接断开事件
/// </summary>
/// <param name="client"></param>
private void RaiseClientDisconnected(TcpClientState state)
{
if (ClientDisconnected != null)
{
ClientDisconnected(this, new AsyncEventArgs("连接断开"));
}
}
/// <summary>
/// 关闭一个与客户端之间的会话
/// </summary>
/// <param name="state">需要关闭的客户端会话对象</param>
public void Close(TcpClientState state)
{
if (state != null)
{
clients.Remove(state);
clientCount--;
//TODO 触发关闭事件
}
}
/// <summary>
/// 处理客户端连接的函数
/// </summary>
/// <param name="ar"></param>
private void HandleTcpClientAccepted(IAsyncResult ar)
{
if (IsRunning)
{
var client = listener.EndAcceptTcpClient(ar);
byte[] buffer = new byte[client.ReceiveBufferSize];
var state = new TcpClientState(client, buffer);
lock (clients)
{
clients.Add(state);
RaiseClientConnected(state);
}
var stream = state.NetworkStream;
//开始异步读取数据
stream.BeginRead(state.Buffer, 0, state.Buffer.Length, HandleDataReceived, state);
listener.BeginAcceptTcpClient(
new AsyncCallback(HandleTcpClientAccepted), ar.AsyncState);
}
}
public AsyncEventArgs(string msg, TcpClientState state)
{
this.msg = msg;
this.state = state;
IsHandled = false;
}
public AsyncEventArgs(TcpClientState state)
{
this.state = state;
IsHandled = false;
}
private void RaiseOtherException(TcpClientState state)
{
RaiseOtherException(state, "");
}
/// <summary>
/// 发送数据
/// </summary>
/// <param name="state">接收数据的客户端会话</param>
/// <param name="data">数据报文</param>
public void Send(TcpClientState state, byte[] data)
{
RaisePrepareSend(state);
Send(state.TcpClient, data);
}
