private void StartRecMsg()
{
try
{
_udpClient.BeginReceive(asyncCallback =>
{
try
{
IPEndPoint iPEndPoint = null;
byte[] bytes = _udpClient.EndReceive(asyncCallback, ref iPEndPoint);
StartRecMsg();
HandleRecMsg?.BeginInvoke(this, iPEndPoint, bytes, null, null);
}
catch (Exception ex)
{
HandleException?.BeginInvoke(ex, null, null);
}
}, null);
}
catch (Exception ex)
{
HandleException?.BeginInvoke(ex, null, null);
}
}
/// <summary>
/// 开始接受客户端消息
/// </summary>
public void StartRecMsg()
{
try
{
byte[] container = new byte[1024 * 1024 * 4];
_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);
try
{
//处理消息
HandleRecMsg?.BeginInvoke(recBytes, this, _server, null, null);
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
}
}
else
{
Close();
}
}
catch (Exception ex)
{
HandleException?.BeginInvoke(ex, null, null);
Close();
}
}, null);
}
catch (Exception ex)
{
HandleException?.BeginInvoke(ex, null, null);
Close();
}
}
/// <summary>
/// 读取消息内容
/// </summary>
/// <param name="ar"></param>
public void ReadBodyCallback(IAsyncResult ar)
{
try
{
String content = String.Empty;
// Retrieve the state object and the handler socket
// from the asynchronous state object.
StateObject state = (StateObject)ar.AsyncState;
Socket handler = state.workSocket;
// Read data from the client socket.
int bytesRead = handler.EndReceive(ar);
if (bytesRead > 0)
{
// There might be more data, so store the data received so far.
var bytes = new byte[bytesRead];
Array.Copy(state.buffer, 0, state.data, state.dataRecviedLen, bytesRead);
state.dataRecviedLen += bytesRead;
if (state.dataRecviedLen < state.dataLen)
{
_socket.BeginReceive(state.buffer, 0, StateObject.BufferSize, SocketFlags.None, new AsyncCallback(ReadBodyCallback), state);
}
else
{
try
{
HandleRecMsg?.BeginInvoke(state.data, this, _server, null, null);
}
catch (Exception ex)
{
HandleException?.Invoke(ex);
}
if (_isRec && IsSocketConnected())
{
StartRecMsg();
}
}
}
}
catch (Exception ex)
{
HandleException?.BeginInvoke(ex, null, null);
Close();
}
}
