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POHuge delay in network communication
 

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  1. POHuge delay in network communication
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    <p>I ame writing a wcf like application, a client sends some data to a server with an id and some packet handeling data, and the server sends a message back with the same id, i ame testing the client and server on thesame computer, i ame not using localhost to connect the server and client together but the real ip address so it wil actualy open a socket instead of a loopback(this is wat i have heared). now i get amazing response times , 500(.05ms)-1000(.1ms) ticks for a : <code>client-&gt; server-&gt; client</code> communication, now i want to try it from computer to computer, so i run the client on one and the server on the other, but now the time to communicate increases ALOT, i now get times from 250000(25ms) to 350000(35ms) ticks, why does this happen? i tried using the debugger to find any delays, but i realy only get alot of delay in the socket communication</p> <p>this is the initalisation of the server socket:</p> <pre><code>IPEndPoint localEndPoint = new IPEndPoint(IPAddress.Parse(LocalIpAddress), port); Listener = new Socket(localEndPoint.Address.AddressFamily, SocketType.Stream, ProtocolType.Tcp); Listener.Bind(localEndPoint); Listener.LingerState = new LingerOption(false, 0); Listener.Listen(0); </code></pre> <p>this is the initialisation of the client socket:</p> <pre><code>ClientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); ClientSocket.ReceiveBufferSize = buffer.Length; ClientSocket.LingerState = new LingerOption(false, 0); </code></pre>
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    1. USJeffnl
    1. USJeffnl
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    1. COIs this not just the added latency of having to communicate over a network infrastructure? I am not entirely sure what 250000 ticks translates to in standard time, how many milliseconds in this?
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      1. POHuge delay in network communication
      1. USAdam Houldsworth
    2. CO@AdamHouldsworth i've added the time in ms (1 ms = 10000 ticks). yes that is what i thought too, but 35ms? it maby are 40 bytes that are send, and what i know when testing on the local computer it does communicate via the network.
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      1. POHuge delay in network communication
      1. USJeffnl
    3. COWithout knowing the topology and hardware in between your two computers, I couldn't say whether that many milliseconds are surprising or not. However, the story tends that latency exists. You'd be best off expecting it and working with it than trying to always make it fast enough that your app doesn't need to worry about it (nice to aim for, but unfortunately it can be unrealistic).
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      1. POHuge delay in network communication
      1. USAdam Houldsworth
 

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