Question about binding sockets with IPEndPoints RRS feed

  • Question

  • User1969772734 posted

    I am hoping to reach out to the community today for some "best practices" guideance.

    I currently have 7 WCF hosts that have been written that are supposed so host the WCF service on any available port within a specified range. We have a function that finds an available port within the OS and returns it to the host having already been reserved using the "bind" method.

    My question with the following code is:

    1) With all services coming through this same "FindAvailablePort" process, do we need a mutex as coded below?

    2) Is there any chance of a race condition?

    Dim portMutex As Mutex = ObtainNamedMutex("MyMutexName" & Guid.NewGuid().Tostring())
    'returns a new mutex with a unique name for all seven services.
       Dim endPoint As New IPEndPoint(IPAddress.Any, 0)
       Using socket As New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
            Dim local As IPEndPoint = DirectCast(socket.LocalEndPoint, IPEndPoint)
            Return local.Port
       End Using
    End Try

    Wednesday, September 18, 2013 4:33 PM