wcfDualHTTPBinding配置的服务器与客户端部署于不同机器的问题

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

<startup>

<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />

</startup>

<appSettings>

<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />

</appSettings>

<system.web>

<compilation debug="true" />

</system.web>

<system.serviceModel>

<behaviors>

<serviceBehaviors>

<behavior name="MyServiceBehavior">

<serviceMetadata httpGetEnabled="True" httpsGetEnabled="True" />

</behavior>

</serviceBehaviors>

</behaviors>

<bindings>

<wsDualHttpBinding>

<binding name="dualHttpBinding" transactionFlow="true" maxReceivedMessageSize="100000"

messageEncoding="Text" >

<security mode="None">

<message clientCredentialType="None" negotiateServiceCredential="false" />

</security>

</binding>

</wsDualHttpBinding>

</bindings>

<services>

<service behaviorConfiguration="MyServiceBehavior" name="service.MyPublisher" >

<endpoint address="" binding="wsDualHttpBinding" contract="service.IMyContract" bindingConfiguration="dualHttpBinding">

<!--<identity>

<dns value="localhost"/>

</identity>-->

</endpoint>

<!--<endpoint address="mex" binding="mexTcpBinding" contract="IMetadataExchange" />-->

<endpoint address="mex" binding="mexHttpBinding"  contract="IMetadataExchange" />

<host>

<baseAddresses>

<add baseAddress="http://192.168.0.139:8899/" />

</baseAddresses>

</host>

</service>

</services>

</system.serviceModel>

</configuration>

以上是wsDualHTTPBinding的配置文件，wsDualHTTPBinding用于实现双向通信。红色部分加入之后，可以将服务器与客户端软件部署于不同的机器上（蓝色部分去除）。

如果没有下面这段红色部分：

<security mode="None">

<message clientCredentialType="None" negotiateServiceCredential="false" />

</security>

客户端会出现如下异常报错:

The caller was not authenticated by the service.

部署于不同机器的另外一个需要注意的地方是：关闭防火墙。