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POWCF: StreamedResponse throws Timeout after a few processed calls
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  1. POWCF: StreamedResponse throws Timeout after a few processed calls
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    copied!<p>i'm trying to set up an WCF-Web that returns data from the database as Streamed Response to the Client. The method returns 45.000 Items currently. </p> <p>My problem is, that when i try to call this method a couple of times, some requests will succeed, while the next call dies with an TimeoutException - seems like the client is not able to establish a new connecton to the host. If i change the TransferMode to "Buffered" it will work like intended.</p> <p>The amount of successfully processed calls can be increased by increasing the System.Net.ServicePointManager.DefaultConnectionLimit to a larger Number. </p> <p>It seems to me, that the client does not close the connection? But why only in StreamedResponse mode? Where's the mistake? Any idea? </p> <p>Source:</p> <pre><code>public static void DoCall() { var factory = new ChannelFactory&lt;ICacheService&gt;("ICacheService", new EndpointAddress(...)); ICacheService service = factory.CreateChannel(); try { var itemsMessage = service.DoStreaming( Message.CreateMessage(MessageVersion.Soap11, "DoStreaming", "SomeArgumnt") ); foreach (Item item in GetAllItems(itemsMessage)) { ... } var serviceChannel = ((IServiceChannel) service); if (serviceChannel.State != System.ServiceModel.CommunicationState.Faulted) serviceChannel.Close(); itemsMessage.Close(); ((IServiceChannel)service).Close(); } catch (Exception ex) { ((IServiceChannel) service).Abort(); } factory.Close(); } private static IEnumerable&lt;Item&gt; GetAllItems(System.ServiceModel.Channels.Message message) { XmlReader reader = message.GetReaderAtBodyContents(); if (reader.LocalName != "results") { throw new Exception("The service returned an invalid message"); } XmlSerializer serializer = new XmlSerializer(typeof(Item)); reader.ReadStartElement("results"); while (!reader.EOF &amp;&amp; reader.LocalName == "Item") { yield return (Item)serializer.Deserialize(reader); } reader.ReadEndElement(); } </code></pre> <p>Client-Binding:</p> <pre><code>&lt;binding name="BasicHttpBinding_ICacheService" openTimeout="00:01:00" receiveTimeout="00:01:00" sendTimeout="00:10:00" maxReceivedMessageSize="1000000000" transferMode="Buffered" &gt; &lt;readerQuotas maxDepth="2147483647" maxStringContentLength="2147483646" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647" /&gt; &lt;security mode="None"&gt; &lt;transport clientCredentialType="None" proxyCredentialType="None" realm="" /&gt; &lt;message clientCredentialType="UserName" algorithmSuite="Default" /&gt; &lt;/security&gt; &lt;/binding&gt; </code></pre>
 

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