.NET Service Bus 调试

如果先关service再关client

那么client的channel.Close()会报异常：

“The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.”

 

如果还未启动service就打开client

则client的channel.Open()会报异常：

“The endpoint was not found. Please ensure that you can connect to the internet using HTTP port 80 and TCP port 808.”

 

Client与Service两边的属性的Namespace不一致

例如：

Client端：

    [ServiceContract(Name = "IEchoContract", Namespace = "http://samples.microsoft.com/ServiceModel/Relay/")]
    public interface IEchoContract
    {
        [OperationContract]
        String Echo(string text);
    }

Server端：

     // 注意，最后多了一个Echo
    [ServiceContract(Name = "IEchoContract", Namespace = "http://samples.microsoft.com/ServiceModel/Relay/Echo")]
    public interface IEchoContract
    {
        [OperationContract]
        String Echo(string text);
    }

在Client执行方法channel.Echo(input)的时候会报异常：

"The message with Action 'http://samples.microsoft.com/ServiceModel/Relay/IEchoContract/Echo' cannot be processed at the receiver, due to a ContractFilter mismatch at the EndpointDispatcher. This may be because of either a contract mismatch (mismatched Actions between sender and receiver) or a binding/security mismatch between the sender and the receiver.  Check that sender and receiver have the same contract and the same binding (including security requirements, e.g. Message, Transport, None)."

 

避免Contract和Behavior的paste&copy error

如果一个该用ServiceBehavior的地方用了ServiceContract，例如：

 

//should be [ServiceBehavior(Name = "EchoService", Namespace = http://samples.microsoft.com/ServiceModel/Relay/)]
[ServiceContract(Name = "IEchoContract", Namespace = http://samples.microsoft.com/ServiceModel/Relay/)]
public class EchoService : IEchoContract
{
    public string Echo(string text)
    {
        Console.WriteLine("Echoing: {0}", text);
        return text;
    }
}

则在new一个host的时候，ServiceHost host = new ServiceHost(typeof(EchoService), address); // 会抛出异常
异常信息：

"The service class of type Microsoft.ServiceBus.Samples.EchoService both defines a ServiceContract and inherits a ServiceContract from type Microsoft.ServiceBus.Samples.IEchoContract. Contract inheritance can only be used among interface types.  If a class is marked with ServiceContractAttribute, it must be the only type in the hierarchy with ServiceContractAttribute.  Consider moving the ServiceContractAttribute on type Microsoft.ServiceBus.Samples.IEchoContract to a separate interface that type Microsoft.ServiceBus.Samples.IEchoContract implements."