/// <summary>
/// 发送一个异步的数据信息，该方式在NET35里是不可用的。
/// </summary>
/// <param name="socket">网络的套接字</param>
/// <param name="data">数据内容</param>
/// <returns>是否发送成功</returns>
protected OperateResult SendAsync(Socket socket, byte[] data)
{
if (data == null)
{
return(OperateResult.CreateSuccessResult( ));
}
StateObjectAsync <bool> state = null;
try
{
state = new StateObjectAsync <bool>(data.Length);
state.Tcs = new TaskCompletionSource <bool>( );
}
catch (Exception ex)
{
return(new OperateResult(ex.Message));
}
state.WorkSocket = socket;
state.Buffer = data;
try
{
socket.BeginSend(state.Buffer, state.AlreadyDealLength, state.DataLength - state.AlreadyDealLength,
SocketFlags.None, new AsyncCallback(SendAsyncCallBack), state);
bool boolResult = state.Tcs.Task.Result;
return(OperateResult.CreateSuccessResult( ));
}
catch (Exception ex)
{
return(new OperateResult(ex.Message));
}
}
/// <summary>
/// 接收固定长度的字节数组
/// </summary>
/// <remarks>
/// Receive Special Length Bytes
/// </remarks>
/// <param name="socket">网络通讯的套接字</param>
/// <param name="length">准备接收的数据长度</param>
/// <returns>包含了字节数据的结果类</returns>
protected OperateResult <byte[]> ReceiveAsync(Socket socket, int length)
{
if (length <= 0)
{
return(OperateResult.CreateSuccessResult(new byte[0]));
}
var state = new StateObjectAsync <byte[]>(length);
state.Tcs = new TaskCompletionSource <byte[]>( );
state.WorkSocket = socket;
try
{
socket.BeginReceive(state.Buffer, state.AlreadyDealLength, state.DataLength - state.AlreadyDealLength,
SocketFlags.None, new AsyncCallback(ReceiveAsyncCallback), state);
byte[] byteResult = state.Tcs.Task.Result;
if (byteResult == null)
{
socket?.Close( );
return(new OperateResult <byte[]>(StringResources.Language.RemoteClosedConnection));
}
state.Clear( );
state = null;
return(OperateResult.CreateSuccessResult(byteResult));
}
catch (Exception ex)
{
return(new OperateResult <byte[]>(ex.Message));
}
}
private OperateResult <Socket> ConnectAsync(IPEndPoint endPoint, int timeOut)
{
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
var state = new StateObjectAsync <Socket>( );
state.Tcs = new TaskCompletionSource <Socket>( );
state.WorkSocket = socket;
// timeout check
HslTimeOut connectTimeout = new HslTimeOut( )
{
WorkSocket = socket,
DelayTime = timeOut
};
ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadPoolCheckTimeOut), connectTimeout);
try
{
socket.BeginConnect(endPoint, new AsyncCallback(ConnectAsyncCallBack), state);
socket = state.Tcs.Task.Result;
return(OperateResult.CreateSuccessResult(socket));
}
catch (Exception ex)
{
return(new OperateResult <Socket>(ex.Message));
}
}
/// <summary>
/// 创建一个新的socket对象并连接到远程的地址
/// </summary>
/// <param name="endPoint">连接的目标终结点</param>
/// <param name="timeOut">连接的超时时间</param>
/// <returns>返回套接字的封装结果对象</returns>
/// <example>
/// <code lang="cs" source="HslCommunication_Net45.Test\Documentation\Samples\Core\NetworkBase.cs" region="CreateSocketAndConnectExample" title="创建连接示例" />
/// </example>
protected OperateResult <Socket> CreateSocketAndConnect(IPEndPoint endPoint, int timeOut)
{
if (UseSynchronousNet)
{
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
HslTimeOut connectTimeout = new HslTimeOut( )
{
WorkSocket = socket,
DelayTime = timeOut
};
ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadPoolCheckTimeOut), connectTimeout);
socket.Connect(endPoint);
connectTimeout.IsSuccessful = true;
return(OperateResult.CreateSuccessResult(socket));
}
catch (Exception ex)
{
socket?.Close( );
LogNet?.WriteException("CreateSocketAndConnect", ex);
return(new OperateResult <Socket>(ex.Message));
}
}
else
{
#if NET35
OperateResult <Socket> result = new OperateResult <Socket>( );
ManualResetEvent connectDone = null;
StateObject state = null;
try
{
connectDone = new ManualResetEvent(false);
state = new StateObject( );
}
catch (Exception ex)
{
return(new OperateResult <Socket>(ex.Message));
}
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// 超时验证的信息
HslTimeOut connectTimeout = new HslTimeOut( )
{
WorkSocket = socket,
DelayTime = timeOut
};
ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadPoolCheckTimeOut), connectTimeout);
try
{
state.WaitDone = connectDone;
state.WorkSocket = socket;
socket.BeginConnect(endPoint, new AsyncCallback(ConnectCallBack), state);
}
catch (Exception ex)
{
// 直接失败
connectTimeout.IsSuccessful = true; // 退出线程池的超时检查
LogNet?.WriteException(ToString( ), ex); // 记录错误日志
socket.Close( ); // 关闭网络信息
connectDone.Close( ); // 释放等待资源
result.Message = StringResources.Language.ConnectedFailed + ex.Message; // 传递错误消息
return(result);
}
// 等待连接完成
connectDone.WaitOne( );
connectDone.Close( );
connectTimeout.IsSuccessful = true;
if (state.IsError)
{
// 连接失败
result.Message = StringResources.Language.ConnectedFailed + state.ErrerMsg;
socket?.Close( );
return(result);
}
result.Content = socket;
result.IsSuccess = true;
state.Clear( );
state = null;
return(result);
#else
var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
var state = new StateObjectAsync <Socket>( );
state.Tcs = new TaskCompletionSource <Socket>( );
state.WorkSocket = socket;
// timeout check
HslTimeOut connectTimeout = new HslTimeOut( )
{
WorkSocket = socket,
DelayTime = timeOut
};
ThreadPool.QueueUserWorkItem(new WaitCallback(ThreadPoolCheckTimeOut), connectTimeout);
try
{
socket.BeginConnect(endPoint, new AsyncCallback(ConnectAsyncCallBack), state);
socket = state.Tcs.Task.Result;
return(OperateResult.CreateSuccessResult(socket));
}
catch (Exception ex)
{
return(new OperateResult <Socket>(ex.Message));
}
#endif
}
}
