//连接回调
private void ConnectCallback(IAsyncResult ar)
{
try
{
SrvSocket.EndConnect(ar); //结束挂起
//myConnEvent.Set(); //设置有效信号表示已经收到数据
OnClientConnected(new AsyncTCPClientEventArgs("已经成功连接到服务器", SrvSocket), "server cnonnect");
//System.Diagnostics.Debug.WriteLine(String.Format("已经成功连接到服务器{0}！", _srvSocket.RemoteEndPoint.ToString()));
//System.Diagnostics.Debug.WriteLine(String.Format("本地端接点为{0}！", _srvSocket.LocalEndPoint.ToString()));
Rcvbuffer = new byte[MaxBufLen]; //创建一个接收缓冲区,用于存储所返回的数据
///每秒检测一次Socket是否正常连接
if (IsAutoKeepAlive)
{
SrvSocket.IOControl(IOControlCode.KeepAliveValues, KeepAlive(1, 60000, 1000), null);
}
AsyncCallback callback = new AsyncCallback(ReceiveCallback);
SrvSocket.BeginReceive(Rcvbuffer, 0, Rcvbuffer.Length, SocketFlags.None, callback, SrvSocket);
}
catch (Exception ex)
{
//System.Diagnostics.Debug.WriteLine(ex.ToString());
}
}
//=========================================================
/// <summary>
/// 继续回调监听数据
/// </summary>
protected void ContinueReceiveCallback()
{
//重新创建一个接收缓冲区
Rcvbuffer = new byte[SrvSocket.SendBufferSize];
AsyncCallback callback = new AsyncCallback(ReceiveCallback);
SrvSocket.BeginReceive(Rcvbuffer, 0, Rcvbuffer.Length, SocketFlags.None, callback, SrvSocket);
}
private void ReceiveCallback(IAsyncResult ar)
{
try
{
int iDataLen = SrvSocket.EndReceive(ar); //这是接收回来的数据长度
if (iDataLen > 0)
{
_bReceiveData = new byte[iDataLen]; //存放已经接收返回的数据
Array.Copy(Rcvbuffer, 0, _bReceiveData, 0, _bReceiveData.Length);
//重新创建一个接收缓冲区
//DataProcess(_bReceiveData);
//ReceiveData = _bReceiveData;
//ReceiveEvent.Set();
OnDataReceived(new AsyncTCPClientEventArgs("data receive", SrvSocket), _bReceiveData);
//AsyncCallback callback = new AsyncCallback(ReceiveCallback);
//_srvSocket.BeginReceive(Rcvbuffer, 0, Rcvbuffer.Length, SocketFlags.None, callback, _srvSocket);
}
else
{
ShutdownAndDisposeSocket();
OnSocketException(new AsyncTCPClientEventArgs("服务器已断开连接", SrvSocket), "server err");
}
}
catch (SocketException ex)
{
ShutdownAndDisposeSocket();
OnSocketException(new AsyncTCPClientEventArgs("服务器已断开连接", SrvSocket), "server err");
LogHelpr.Error("服务器已断开连接：" + ex.ToString());
}
catch (Exception ex)
{
OnOtherException(new AsyncTCPClientEventArgs("服务器已断开连接", SrvSocket), "other err");
LogHelpr.Error("服务器已断开连接：" + ex.ToString());
}
finally
{
if (SrvSocket != null && SrvSocket.Connected == true)
{
Rcvbuffer = new byte[MaxBufLen];
AsyncCallback callback = new AsyncCallback(ReceiveCallback);
SrvSocket.BeginReceive(Rcvbuffer, 0, Rcvbuffer.Length, SocketFlags.None, callback, SrvSocket);
}
}
}