I am referencing the downloaded 1.5.3 RabbitMQ.Client and RabbitMQ.ServiceModel...<br><br>&lt;CodeSnip&gt;<br>//subscribe call in winform button click event...<br><br>using (System.ServiceModel.ChannelFactory&lt;IDispatcherService&gt; scf = GetDispatcherCF())<br>
{<br>    IDispatcherService client = scf.CreateChannel();<br>    client.Subscribe(new SubscriberInfo(&quot;amqp:///subscriber&quot;, &quot;c1&quot;, &quot;c2&quot;));<br>}<br><br>//IDispatcherService Interface...<br><br>using Test.Entity;<br>
using System;<br>using System.ServiceModel;<br><br>namespace Test.Base<br>{<br>    [ServiceContract]<br>    public interface IDispatcherService<br>    {<br>        [OperationContract(IsOneWay = true)]<br>        void Publish(Message message);<br>
        [OperationContract(IsOneWay = true)]<br>        void Subscribe(SubscriberInfo subscriber);<br>        [OperationContract(IsOneWay = true)]<br>        void Unsubscribe(SubscriberInfo subscriber, bool removeAllContexts);<br>
    }<br>}<br><br>//GetDispatcherCF() called by winform button click event above...<br><br>private ChannelFactory&lt;IDispatcherService&gt; GetDispatcherCF()<br>{<br>    ChannelFactory&lt;IDispatcherService&gt; scf;<br>        <br>
<b>//the error I  posted previously and below occurs here during the RabbitMQBinding instantiation...    </b><br>        scf = new ChannelFactory&lt;IDispatcherService&gt;(<br>           new RabbitMQBinding(<br>            new Uri(&quot;amqp://localhost:5672/&quot;), <br>
              Protocols.AMQP_0_8),<br>                new EndpointAddress(&quot;amqp:///dispatcher&quot;));<br><br><br>    return scf;<br>}<br><br>&lt;/CodeSnip&gt;<br><br>&lt;ErrorSnip&gt;<br>the following is returned...<br>
<br>The AMQP operation was interrupted:
AMQP close-reason, initiated by Library, code=311, text=&quot;The body of a
message (18446744073709551575 bytes) was too long.&quot;, classId=0,
methodId=0, cause=RabbitMQ.Client.Impl.<div id=":18v" class="ii gt">BodyTooLongException: The body of a message (18446744073709551575 bytes) was too long.<br>
   at RabbitMQ.Client.Impl.ContentHeaderBase.ReadFrom(Int32 channelNumber, NetworkBinaryReader reader) in C:\RabbitMQ.Client\RabbitMQ\Client\Impl\ContentHeaderBase.cs:line 23<br>   at RabbitMQ.Client.Impl.CommandAssembler.HandleFrame(Frame f) in C:\RabbitMQ.Client\RabbitMQ\Client\Impl\CommandAssembler.cs:line 53<br>

   at RabbitMQ.Client.Impl.Session.HandleFrame(Frame frame) in C:\RabbitMQ.Client\RabbitMQ\Client\Impl\Session.cs:line 16<br>   at RabbitMQ.Client.Impl.ConnectionBase.MainLoopIteration() in C:\RabbitMQ.Client\RabbitMQ\Client\Impl\ConnectionBase.cs:line 434<br>

   at RabbitMQ.Client.Impl.ConnectionBase.MainLoop() in C:\RabbitMQ.Client\RabbitMQ\Client\Impl\ConnectionBase.cs:line 388</div><br>&lt;/ErrorSnip&gt;<br><br>