/// <summary>
/// 这个方法在异步接收操作完成时调用.
/// 如果远程主机关闭连接Socket将关闭
/// </summary>
private void ProcessReceive(SocketAsyncEventArgs e)
{
AsyncUserToken token = (AsyncUserToken)e.UserToken;
// 检查远程主机是否关闭连接
if (e.BytesTransferred > 0 && e.SocketError == SocketError.Success)
{
// 增加接收到的字节总数
Interlocked.Add(ref m_totalBytesRead, e.BytesTransferred);
Debug.WriteLine(string.Format("服务器读取字节总数:{0}", m_totalBytesRead));
//byte[] destinationArray = new byte[e.BytesTransferred];// 目的字节数组
//Array.Copy(e.Buffer, 0, destinationArray, 0, e.BytesTransferred);
token.SetBytesReceived(e.BytesTransferred);
EventHandler <AsyncUserToken> handler = OnClientRead;
// 如果订户事件将为空(null)
if (handler != null)
{
handler(this, token);// 抛出接收到数据事件
}
try
{
// 继续接收数据
bool willRaiseEvent = token.Socket.ReceiveAsync(e);
if (!willRaiseEvent)
{
ProcessReceive(e);
}
}
catch (ObjectDisposedException)
{
RaiseDisconnectedEvent(token);
}
catch (SocketException socketException)
{
if (socketException.ErrorCode == (int)SocketError.ConnectionReset) //10054一个建立的连接被远程主机强行关闭
{
RaiseDisconnectedEvent(token); //引发断开连接事件
}
else
{
RaiseErrorEvent(token, new AsyncSocketException("在SocketAsyncEventArgs对象上执行异步接收数据操作时发生SocketException异常", socketException));
}
}
catch (Exception exception_debug)
{
Debug.WriteLine("调试：" + exception_debug.Message);
throw exception_debug;
}
}
else
{
RaiseDisconnectedEvent(token);
}
}