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<pollingDuplex> (Silverlight)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

This element configures polling duplex communication between a service and a client.

Syntax

  <customBinding>
    <binding> 
       <pollingDuplex           duplexMode=”SingleMessagesPerPoll/MultipleMessagesPerPoll”            inactivityTimeout=”TimeSpan”            clientPollTimeout=”TimeSpan”            maxPendingMessagesPerSession=”Integer”/> 
    </binding>
  </customBinding>

Attributes and Elements

The following sections describe attributes, child elements, and parent elements.

Attributes

Attribute Description

duplexMode

An optional value that indicates how the server behaves in response to client polling.

inactivityTimeout

An optional value that indicates the maximum interval of time that can pass without activity on a channel before the client or server channel enters a faulted state. The default value is 10 minutes.

clientPollTimeout

An optional value that indicated the interval of time that a client polling request has to complete before timing out.

maxPendingMessagesPerSession

An optional value that indicates the maximum number of pending messages per session.

Child Elements

Element Description

(None)

Parent Elements

Element Description

<binding> of <customBinding> (Silverlight)

Defines the binding capabilities of the custom binding.

Text Value

Remarks

Example

Create the polling duplex binding element for a custom binding that uses a MultipleMessagesPerPoll value for the mode of duplex communication.

<system.serviceModel>
   <bindings>
       <!-- configure a custom binding -->
       <customBinding>
          <binding name="CustomBinding1">
            <pollingDuplex duplexMode="MultipleMessagesPerPoll" />
            <httpTransport />
        </binding>
       </customBinding>
   </bindings>
</system.serviceModel>