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I have two independent application, how to transfer data?

Posted on 2005-04-19
Medium Priority
Last Modified: 2010-04-16
I have two independent application:-

Application A:- Currently under development and hence use VS debug operation, sometime I quit the test via VS rather than exiting the application which close particular session (this is rather a bad habit, I admit) with the equipment at the network. This equipment is left with open session and will crash if the application A run again and attempt to open the session. I'm using Tektronix VISA protocol to open and close session to the network and comminicate with equipment remotely.

Application B:- This is fully independent program that sit on background and recieves the session information from the Application A, it also recieves watchdog signal (every 1-10 second say) from the Application A so that it know it running. When Application A discontinue without proper exit, the watchdog signal to Application B discontinue and hence the timeout event, which close the session on behalf of the Application A.

What is the best way to send string, int data to to the Application B and send watchdog signal to Application B?.

One possible solution is to transfer file into HD and update them with timestamp and session details, I looking for smarter way to transfer data real time.

Any suggestion how, please send working example if possible.

Question by:riscy
1 Comment

Accepted Solution

solublefish earned 2000 total points
ID: 13820033
Use network calls. The socket libraries are robust and reliable, and they'll let you put the watchdog on another machine, potentially handle multiple clients, etc.

You can do something really simple with UDP. The code below should be a decent starting point. It's only a little bit modified from MSFT's sample code.

//server side----------------------------
            static void Main()

            public static void ReceiveFrom(int portNum)
                  IPHostEntry hostEntry = Dns.Resolve(Dns.GetHostName());
                  IPEndPoint endPoint = new IPEndPoint(hostEntry.AddressList[0], portNum);

                  Socket s = new Socket(endPoint.Address.AddressFamily,
                  // Creates an IpEndPoint to capture the identity of the sending host.
                  IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
                  EndPoint senderRemote = (EndPoint)sender;
                  // Binding is required with ReceiveFrom calls.
                  byte[] msg = new Byte[256];
                  Console.WriteLine ("Waiting to receive datagrams from client...");
                  // This call blocks.  
                  s.ReceiveFrom(msg, 0, msg.Length, SocketFlags.None, ref senderRemote);

//client side--------------------------------------
public static void SendTo(int portNum, string str)
                  IPHostEntry hostEntry = Dns.Resolve(Dns.GetHostName());
                  IPEndPoint endPoint = new IPEndPoint(hostEntry.AddressList[0], portNum);

                  Socket s = new Socket(endPoint.Address.AddressFamily,
                  byte[] msg = System.Text.Encoding.ASCII.GetBytes(str);
                  Console.WriteLine("Sending data: " + str);
                  // This call blocks.
                  s.SendTo(msg, 0, msg.Length, SocketFlags.None, endPoint);

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