/// <summary>
/// 释放SOCKET资源与关闭
/// </summary>
private void ShutdownAndDisposeSocket()
{
if (SrvSocket != null)
{
SrvSocket.Shutdown(SocketShutdown.Both);
SrvSocket.Close();
SrvSocket = null;
}
}
/// <summary>
/// 同步连接
/// </summary>
/// <param name="strIP"></param>
/// <param name="iPort"></param>
public void BuildServerSocket(string strIP, int iPort)
{
try
{
if (SrvSocket == null)
{
SrvSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
}
if (SrvSocket.Connected)
{
if (SrvSocket.RemoteEndPoint.ToString() != strIP + ":" + iPort.ToString())
{
SrvSocket.Disconnect(true);
}
}
if (!SrvSocket.Connected)
{
//从配置文件获取ip地址和端口号
IPEndPoint _ipep = BuildIPEndPoint(strIP, iPort);
if (_ipep != null)
{
//AsyncCallback callback = new AsyncCallback(ConnectCallback);
SrvSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//SrvSocket.BeginConnect(_ipep, callback, SrvSocket);
//尝试连接
try
{
SrvSocket.Connect(_ipep);
}
//异常处理
catch (SocketException e)
{
OnSocketException(new SyncTCPClientEventArgs("连接失败", SrvSocket), "connect err");
return;
}
if (SrvSocket.Connected)
{
OnClientConnected(new SyncTCPClientEventArgs("已经成功连接到服务器", SrvSocket), "server cnonnect");
}
SyncReceiveData();
}
}
}
catch
{
OnOtherException(new SyncTCPClientEventArgs("创建连接失败", SrvSocket), "connect err");
return;
}
}
//发送数据回调
private void SendCallback(IAsyncResult ar)
{
try
{
int sendNum = SrvSocket.EndSend(ar); //结束挂起的异步发送
//System.Diagnostics.Debug.WriteLine("向Socket发送字节数：" + sendNum.ToString());
}
catch
{
ShutdownAndDisposeSocket();
//System.Diagnostics.Debug.WriteLine("服务器断开了TCP连接！");
}
}
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);
}
}
}
