How to set keep alive interval for HTTP connection in WCF

Http transport channel in WCF 开发者_开发百科uses persistent HTTP connections by default. How to control keep alive timeout for those connections? Default value is 100s. I found that value by monitoring application in Procmon. I haven't found any setting in http transport binding element which configures this timeout. Is there any .NET class which can control that timeout?

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Take a look here:

http://web.archive.org/web/20080721055556/http://blog.magenic.com/blogs/jons/archive/2007/05/04/The-Tao-of-Microsoft-WCF-CustomBinding-Configuration-Elements.aspx

There is a detailed discussion of manipulating the keep alive property during an http connection.

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I found the solution for this. The problem is that the underlying kernel http.sys has it's own timeout and it will break the connection.

http://mmmreddy.wordpress.com/2013/07/11/wcf-use-of-http-transport-sharing-persistent-tcp-sessions/

netsh http add timeout timeouttype=idleconnectiontimeout value=120

Also, this question is similar to this What 130 second timeout is killig my WCF streaming service call?

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It sounds to me like you're wanting to adjust the Keep-Alive HTTP header. You should read this article on HTTP keep-alive and first determine if this is really something worth your time.

If it is, try creating a Message Inspector. This should allow you to modify the HTTP headers for each message that gets sent out:

public class KeepAliveMessageInspector : IClientMessageInspector
{
    // ...

    public object BeforeSendRequest(
        ref System.ServiceModel.Channels.Message request,
        System.ServiceModel.IClientChannel channel)
    {
        // Add/modify the Keep-Alive header
        var httpRequestMessage = new HttpRequestMessageProperty();
        httpRequestMessage.Headers.Add("Keep-Alive", "9000");
        request.Properties.Add(
            HttpRequestMessageProperty.Name, httpRequestMessage);
        return null;
    }

    // ...
}

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Setting ServicePoint.MaxIdleTime should let you change the default 100 second idle timeout on the persistent HTTP connections.

https://www.visualbasicplanet.info/windows-communication/configuring-http-connections.html

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From this answer, and what I can read here, it looks like you want to create a custom http binding, and set the inactivityTimeout attribute.

From the MSDN article:

<bindings>
  <customBinding>
    <binding name="Binding1">
      <reliableSession acknowledgementInterval="00:00:00.2000000" enableFlowControl="true"
                        maxTransferWindowSize="32" inactivityTimeout="00:10:00" maxPendingChannels="128"
                        maxRetryCount="8" ordered="true" />
      <security mode="None"/>
      <httpTransport authenticationScheme="Anonymous" bypassProxyOnLocal="false"
                    hostNameComparisonMode="StrongWildcard" 
                    proxyAuthenticationScheme="Anonymous" realm="" 
                    useDefaultWebProxy="true" />
    </binding>
  </customBinding>
</bindings>

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How about this? Seems it may be a function of your IIS Server and nothing to do with the WCF service? I know this link applies to IIS6, but maybe it serves as a foundation to something similar in IIS7? http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/73566f83-c257-4941-8ed8-7ae45b2e7985.mspx?mfr=true