我有一个TCP服务器,它运行良好,但现在我需要以安全的方式停止它和所有线程。
据我所知,中止(Abort)方法不可取。我进行了调试,并且当服务器启动并且没有连接时,代码似乎在该行上停止:
Server = New TcpListener(IPAddress.Any, Port)
当我调用 StopServer 时,会出现有关 WSACancelBlockingCall 的错误,我无法正确地停止服务器。
以下是完整的代码,除了接收数据的 StartTcpClient。
#Region "TCP Receive variables"
Dim TcpOpen As Boolean = False
Private Server As TcpListener = Nothing
Private ServerThread As Thread = Nothing
Friend AckString As String = ""
#End Region
#Region "TCP"
Public Sub StopServer()
Server.Stop()
ServerThread.Abort()
TcpOpen = False
End Sub
Public Sub InitServer(ByVal Port As Integer)
Server = New TcpListener(IPAddress.Any, Port)
ServerThread = New Thread(AddressOf ConnectionListener)
ServerThread.IsBackground = True
ServerThread.Start()
TcpOpen = True
End Sub
Private Sub ConnectionListener()
Server.Start()
While True
Dim client As TcpClient = Server.AcceptTcpClient()
Dim T As New Thread(AddressOf StartTcpClient)
T.IsBackground = True
T.Start(client)
End While
End Sub
#End Region
编辑:我对代码进行了一些修改,现在似乎可以按照我的需求工作。
Public Sub StopServer()
TcpOpen = False
Server.Stop()
ServerThread = Nothing
End Sub
Private Sub ConnectionListener()
Server.Start()
While True
If TcpOpen Then
If Server.Pending Then
Dim client As TcpClient = Server.AcceptTcpClient()
Dim T As New Thread(AddressOf StartTcpClient)
T.IsBackground = True
T.Start(client)
Else
System.Threading.Thread.Sleep(10)
End If
Else
Exit While
End If
End While
End Sub